45results about How to "Good economic benefits" patented technology

The invention provides a wellhead foam content detection sensor, which belongs to the field of natural gas extraction equipment, and consists of a column body, a lower sealing gasket, a toughened glass sheet, an upper sealing gasket, an internal and external thread bushing, an infrared emitting head, a silicon photocell, a silicon photocell seat, a battery pack, a processing circuit, a wireless transmission module, a box body, a box bottom, a box cover, a sealing ring, a bolt and a flange plate, the foam content is measured according to infrared signals with different intensities received by the silicon photocells installed on the inner and outer wire bushing, the box body is welded to the column body, and the battery pack, the processing circuit and the wireless transmitting module are installed at the box bottom and connected with the silicon photocells and the infrared transmitting head through wires to form a loop. The foam content detection sensor is connected to the gas production pipeline through a flange plate and transmits data to the display unit in a wireless mode. The detection data has the advantages of real-time performance, high precision and good stability, the resource cost is saved, the economic benefit is improved, the gas production process is analyzed in real time, and the production stability is improved.

The invention provides a method for preparing low-zinc lanthanum chloride by utilizing a multi-stage wash-extraction method. The method comprises a saponification stage step, an extraction stage step,a washing stage III step, a washing stage II step, a washing stage I step and a reverse extraction stage step; in the saponification stage, the saponification degree is 0.5 to 0.54, the flow rate is75 L/min, and the material liquid is a high-zinc high-calcium lanthanum chloride water solution produced in a La/Ce separation line by utilizing a P507-kerosene-hydrochloric acid system extraction method; in the washing stage I step, high-zinc lanthanum chloride is taken as washing liquid of which the flow rate is 0.5 L/min to 0.8 L/min; and the concentration of lanthanum chloride in the high-zinclanthanum chloride is 2.14 mol/L to 2.15 mol/L, the content of CaO is smaller than 0.01 g/L, and the content of ZnO is 2.3 g/L to 2.45 g/L. According to the method provided by the invention, calciumis removed and zinc is reduced by using a multi-stage wash-fractional-extraction system; and a calcium-removed low-zinc lanthanum chloride product, a calcium-removed lanthanum chloride product and a high-zinc lanthanum chloride product can be produced. The method provided by the invention has the advantages of short technological process, flexible product regulation, low production cost, good economic efficiency and the like.

The invention discloses a preparation method of nickel-based alloy powder for laser cladding. The method comprises steps that 1, a nickel-based alloy bar is put into a vacuum induction furnace to be smelted, and nickel-based alloy melt is obtained; 2, a smelting chamber, an atomizing chamber and a primary cyclone separator in the vacuum atomization smelting furnace are pumped to be in a vacuum state, and argon is filled for protection; 3, the nickel-based alloy melt is heated into nickel-based alloy melt liquid and then atomized, and nickel-based alloy powder is obtained under the impact effect of ultra-high-speed inert gas flow; 4, the nickel-based alloy powder prepared in the step 3 is subjected to screening and airflow treatment according to the requirement of the laser cladding technology or a selective laser melting technology for the particle size of the powder; and 5, the nickel-based alloy powder obtained through screening and airflow in the step 4 is loaded into a boat and placed in a vacuum degassing furnace to be subjected to vacuum degassing, and finally the nickel-based alloy powder with the high sphericity degree is obtained. The method is advantaged in that the prepared nickel-based alloy powder is high in sphericity degree, and the powder yield is high.

The invention discloses a quasi-large-diameter pile formed by bunching a plurality of small-diameter piles and a construction method of the quasi-large-diameter pile. The structure of the quasi-large-diameter pile comprises a plurality of foundation pile units with the same structures, wherein a group A of foundation pile units and a group B of foundation pile units are uniformly arranged at intervals to form the foundation pile unit, both the group A of foundation pile units and the group B of foundation pile units comprise concrete main bodies and steel bar cages, occluding grooves are formed in the outer sides of the steel bar cages, and the occluding grooves in the group A of foundation pile units and the group B of foundation pipe units adjacent to the group A of foundation pile units coincide. The quasi-large-diameter pile is formed by the plurality of small-diameter piles defining a bunch with a theoretical pile center as the circle center and mutually meshing with each other to form a whole. According to the construction method of the quasi-large-diameter pile, a conventional small-diameter pile construction process is completely adopted, high-power construction machinery investment is not needed, and therefore the advantages of the large-diameter pile are achieved, the construction difficulty is reduced, and the application range is enlarged; multiple pile foundations can be constructed at the same time without the restriction of the large construction machinery, and therefore the construction period of the pile foundations is greatly shortened, the engineering cost is saved, and the economic benefits are obvious.

The invention relates to a production method for making a high-grade cardboard using brush wood sheet hot grinding pulp to replace OCC (obsolescence corrugated cardboard) pulp. The production method comprises the following steps of pulp preparation: using waste box cardboards to prepare OCC pulp; using ONP (old news paper) to prepare ONP pulp; using brush wood sheets to prepare wood chip pulp, mixing the wood chip pulp, saccharomyces chevalieri and a binder, and culturing; pulp blending: using the ONP pulp as a grey board topcoat layer; mixing the OCC pulp and the wood chip pulp to form a grey board liner layer; mixing the OCC pulp and the wood chip pulp to form a grey board core layer; mixing the OCC pulp and the wood chip pulp to form a grey board bottom layer; paper making: using the approaching pulp to make the paper. Compared with the prior art, the production method has the advantages that the wood chip pulp is cultured by microorganisms, so that the thickness, compactness and stiffness of grey board are improved; the raw material structure of the grey board is optimized, the usage amount of OCC waste paper is reduced, the problem of raw material cost of the grey board is reduced, and the economic benefit is obviously improved.

The invention provides a rapid mold filling feeding and gating system for a large high-temperature alloy casing casting part and a pouring method. The rapid mold filling feeding and gating system comprises a pouring cup, a sprue, a ceramic slag blocking net, a plurality of feeding modules and a cross gate, wherein the pouring cup is used for receiving pouring liquid; an inlet of the sprue is communicated with the bottom of the pouring cup; the ceramic slag blocking net is arranged between the sprue and the pouring cup; the plurality of feeding modules are arranged on the upper side of the casing casting part and used for feeding the casing casting part in a solidification process; and the cross gate is positioned among the plurality of feeding modules and is communicated with the plurality of feeding modules. According to the feeding and gating system and the pouring method, the upper and lower double-annular cross gate design and the bottom pouring type mold filling mode of a traditional large high-temperature alloy casing casting part are abandoned, molten metal for filling a complex feeding and gating system is reduced, the process yield is increased, it can be ensured that metal melt rapidly fills the whole die cavity of the casing casting part, heat loss is reduced, the front edge of the melt only has one intersection opportunity, the oxide film defect generated by intersection and hedging of a plurality of heads of the melt can be greatly reduced, and the metallurgical quality of the casting part is remarkably improved.

The invention discloses a serpentine pipe hanging device for a narrow-gap coal economizer. A traditional hanging structure is difficult to manufacture, easy to crack in a bending position, difficult to meet a tolerance standard, high in manual technical requirements and high in physical and metal energy consumption; and when a boiler works, a pipe easily breaks away from the hanging structure, is easily frayed by a hanging plate, and easily explodes and stops accidentally. The serpentine pipe hanging device for the narrow-gap coal economizer comprises a group of transversely staggered serpentine pipes (3) and a group of hanging plates (4), wherein the hanging plates comprise wide hanging plates (5); the wide hanging plates are connected with narrow hanging plates (6); the wide hanging plates are connected with the narrow hanging plates in a welding way; and the hanging plates comprise a first hanging plate, a second hanging plate, a third hanging plate till an Nth hanging plate. The serpentine pipe hanging device for the narrow-gap coal economizer is applied to the serpentine pipe hanging device for a coal economizer of a narrow-gap boiler flue.

The invention discloses a swinging power generation device. The swinging power generation device comprises a left rotary shaft, a right rotary shaft, a middle rotary shaft, a left one-way bearing, a right one-way bearing, a left inertia wheel, a right inertia wheel, a speed increaser, a power generator and a swinging device. The swinging power generation device is characterized in that the left rotary shaft and the right rotary shaft are fixedly connected with the swinging device correspondingly; the left one-way bearing and the right one-way bearing are fixedly nested on the left rotary shaft and the right rotary shaft correspondingly; the left inertia wheel and the right inertia wheel are fixedly nested on the left one-way bearing and the right one-way bearing correspondingly; the middle rotary shaft is fixedly connected with the right inertia wheel, rotates and is sped up through the speed increaser to drive a power generator rotor; a power generator stator (shell) is fixedly connected with the left inertia wheel and a speed increaser shell, high-speed stable reverse rotation of the power generator stator and the power generator rotor is realized, and then electricity is generated. The swinging power generation device is high in performance ratio, simple in structure, low in manufacturing cost, high in reliability and free of pollution.

The invention discloses a slide block elastic locking type position-adjustable chamfering device. The slide block elastic locking type position-adjustable chamfering device comprises an installing sleeve, a slide block type cutter carrier, a tail end locking screw and a front end fixing threaded ring, wherein the installing sleeve is provided with a cutter carrier chute and tail portion threads, an elastic avoidance groove and front end fastening connection threads, the cutter carrier chute is connected with the slide block type cutter carrier, the tail portion threads are connected with the tail end locking screw, the front end fastening connection threads are connected with the front end fixing threaded ring, the installing sleeve is in clearance fit with a machine tool cutter, and a chamfering cutter is arranged at the front end of the slide block type cutter carrier. The slide block elastic locking type position-adjustable chamfering device is arranged on various types of machine tool cutters in a sleeving mode, is connected with the machine tool cutter to form a whole and is convenient to use and reliable in structure, cutter replacement and working standard change are not needed during machining including drilling milling, turning, boring, grinding and the like, main body machining and chamfering are synchronously completed at a time without additional operation, machining efficiency is remarkably improved, and economical benefit is remarkable.

The invention relates to an open-pore polyurethane rigid foam prepared from a polyurethane rigid foam degradation liquid. The open-pore polyurethane rigid foam is prepared by reacting the polyurethane rigid foam degradation liquid, a polyhydric alcohol formula composition, a foaming agent and polyisocyanate, wherein the polyurethane rigid foam degradation liquid accounts for 0.1%-15% of the total weight of a material, the polyhydric alcohol formula composition accounts for 20%-52% of the total weight of the material, the foaming agent accounts for 0.3%-15% of the total weight of the material, and an isocyanate index is 70-140. According to the open-pore polyurethane rigid foam, the waste polyurethane rigid foam degradation liquid is firstly used for synthesizing the open-pore polyurethane foam with high aperture ratio and lower density, one the one hand, the problem of environmental pollution brought by a waste polyurethane rigid foam is solved, and on the other hand, the cost of raw materials is reduced, and considerable economic benefit is achieved. The prepared open-pore polyurethane rigid foam achieves the aperture ratio more than 70% and is low in density, thereby being a very good sound absorbing material used in building. The prepared open-pore polyurethane rigid foam is capable of providing an effective technical support for recycling the waste polyurethane rigid foam.

The invention provides a device and method for detecting the instability of a steel-structure pressing rod. The device comprises a magnetic shielding outer bracket ring, an inner bracket ring, a retractable magnetic memory detection pen and a power walking mechanism; the inner bracket ring is mounted in the magnetic shielding outer bracket ring; the power walking mechanism is mounted on an outer wall of a rear retaining ring at the rear end of the magnetic shielding outer bracket ring; the retractable magnetic memory detection pen is mounted in the inner bracket ring; the steel-structure pressing rod penetrates through the inner bracket ring; the power walking mechanism can walk on the steel-structure pressing rod; the retractable magnetic memory detection pen is used for detecting the steel-structure pressing rod. The retractable magnetic memory detection pen provided by the invention is provided with two three-dimensional magnetic memory sensors and a distance sensor in total and can realize complete and accurate acquisition of normal and tangential magnetic signals through annular free movement of the device; the detection of rod pieces with various types of sections can be realized, and accurate judgment on the stability of various types of members to be detected is guaranteed.

The invention discloses a cordyceps militaris culture medium which comprises, by weight, 32-38 parts of bean cake, 0.5-1.5 parts of corn flour, 1.5-5 parts of fish meal, 1-3 parts of isomaltulose, 2-5 parts of medical stone, 0.5-2.5 parts of carrot juice, 5-15 parts of silkworm chrysalis powder, 3-6 parts of peptone, 1.6-2.5 parts of triamine citrate, 1.5-2.6 parts of potassium dihydrogen phosphate, 0.5-1.6 parts of magnesium sulfate, 0.5-1.5 parts of sodium dihydrogen phosphate, 3-8 parts of beef extract, 0.5-0.8 part of wheat bran, 0.1-0.5 part of edible salt, 10-15 parts of stone powder and 45-55 parts of water. The cordyceps militaris culture medium is low in preparation ingredient cost and simple and convenient in preparation process, high-quality cordyceps militaris fruiting bodies can be prepared, and cost content and economic benefit are high.

The invention discloses a hybrid power synthetic system based on a magnetic gear brushless direct current motor and belongs to the technical field of automobiles. The hybrid power synthetic system based on the magnetic gear brushless direct current motor comprises a permanent magnet motor body, an electronic steering gear, a position sensor, a control system and a main control board; the electronic steering gear and the position sensor are correspondingly arranged on the permanent magnet motor body; the permanent magnet motor body, the position sensor and the main control board are electrically connected with the control system; a plurality of motor grooves are formed in the main control board; the permanent magnet motor body is embedded into the motor grooves; the permanent magnet motor body comprises a stator, a rotor and a motor housing; the stator is positioned at the center of the permanent magnet motor body; the rotor is positioned between the stator and the motor housing; the electronic steering gear is connected with a power source; and the control mode of the main control board is determined according to the power source. According to the hybrid power synthetic system based on the magnetic gear brushless direct current motor, the magnetic gear brushless direct current motor for an automobile and a control system thereof are improved so that the structure is simplifiedand a better control system is achieved; and therefore, the cost is reduced.

The invention particularly relates to an integrated system for utilization of waste heat of a tunnel kiln. By means of the integrated system, the problem that a large amount of waste heat of tunnel kilns is wasted at present is solved. The integrated system comprises a fan arranged at an air outlet of the tunnel kiln, the fan is connected with an air pipe, the air pipe is communicated with a heating pipeline and a drying pipe respectively, the heating pipeline is arranged below a stirring apparatus capable of being heated, the drying pipeline is disposed on the bottom surface of a drying tank, and both the heating pipeline and the drying pipeline are connected to a purifying device. According to the integrated system, the structure is reasonable, energy is saved, the cost is low, economic benefits are good, and the integrated system is quite suitable for the field of refractory materials sintered at the high temperature.

The invention discloses a prawn industrial culture system combining circulating water and biofloc, and relates to the technical field of prawn culture. The system comprises a culture subsystem, a water treatment subsystem, and an intelligent control subsystem; the culture subsystem comprises a culture pond, an inflating device, a heating device, a dirt collecting area and a water inlet and outletpipeline; the water treatment subsystem comprises a solid-liquid separation device, a biological filter, a protein separator, a disinfection tank, a reservoir, a water pump and a pipeline; and the intelligent control subsystem comprises a water quality monitoring and automatic control unit, a base central control unit, a central management unit, a big data platform and a mobile terminal. The biofloc breeding, water treatment and monitoring parts involved in the system are integrated to form a set of facility-based ecological culture system with self-purification capability for prawns, the water space can be effectively utilized, the facility utilization degree is improved, the breeding controllability is improved, pollutant discharge and disease propagation are reduced, and good ecologicalbenefits are obtained; and the influence on factors such as regions and seasons can be avoided, multi-season annual output is achieved, the yield per unit area is high, and the quality is good.

The invention relates to the field of building materials, particularly to a cement clinker and a preparation method thereof. The preparation method comprises: mixing industrial waste residue for producing high carbon ferrochrome and cement raw material powder to obtain a mixed cement raw material; and calcining the mixed cement raw material to obtain the cement clinker, wherein a weight part ratioof the industrial waste residue to the cement raw material powder is (3-5):(95-97). According to the present invention, the cement clinker is produced by effectively utilizing the high-carbon ferrochrome waste residue, such that the consumption of resources by cement enterprises can be reduced, the production cost can be reduced, the environmental pollution can be reduced, the utilization rate ofhigh-carbon ferrochrome waste residue can be increased, the environmental protection hidden danger caused by the burying of high-carbon ferrochrome waste residue can be reduced, the development of building material industry can be greatly promoted, and the considerable economic and social benefits can be brought to enterprises and society.

The invention discloses recovery process for crosslinked polyethylene wastes. The process comprises the following steps: crushing the crosslinked polyethylene wastes and then adding the crushed wastes into an extruder, subjecting a molecular chain of the crosslinked polyethylene to depolymerization under the actions of high temperature and alternating shear so as to realize recycling, wherein an extrudision temperature of the extruder is 240 to 300 DEG C, and die pressure is 3 to 20 MPa; a screw of the extruder has a length-diameter ratio of 56 to 80 and a rotating speed of 400 to 1200 rpm, so shear line speed exerted on a material is more than 4 m/s; the alternation cycle of maintaining shear force of a screw combination of the extruder is 2 to 10 cycles; processing time of the material is more than 30s; and the extruder is a single-screw extruder or a double-screw extruder. The recovery process provided by the invention can depolymerize the crosslinked polyethylene with environmental protection and high efficiency and enables the depolymerized crosslinked polyethylene to have high mobility and machinability.

The invention relates to a water-based lubricant for titanium tube rolling, which is prepared by taking water as a solvent and not more than 10% molybdenum disulfide as a primary lubricant and adding a saponifying agent, an adhesive, a thickening agent and a flame-retardant lubricant into the solvent and the primary lubricant. The invention solves the problem that the use of molybdenum disulfide as a water-based lubricant is expansive, inconvenient and causes pollution to the environment.

The invention discloses a low-density ceramsite proppant using industrial wastes as a raw material. The low-density ceramsite proppant has the advantages that the waste is changed into the valuable, and the problem of comprehensive utilization of coal chemical industry and tailing wastes is solved. The low-density ceramsite proppant using the industrial wastes as the raw material is prepared fromthe following raw materials in parts by weight: 20 to 30 parts of copper tailings, 15 to 20 parts of manganese ore, 30 to 40 parts of flint clay clinker, 10 to 15 parts of fly ash, 5 to 15 parts of sludge, and 2 to 6 parts of dolomite. A preparation method of the low-density ceramsite proppant comprises the following steps of preparing the flint clay clinker, and grinding into fine powder with size of 200 to 300 meshes; weighing the copper tailings, the flint clay clinker, the sludge and the dolomite in parts by weight according to a proportional ratio, uniformly mixing, and adding water, so as to prepare inner particles; uniformly mixing the manganese ore and the fly ash, placing the inner particles in the manganese ore and the fly ash, further preparing into circular spheres with diameter of 0.6 to 0.7 cm, screening, drying, firing, and cooling to room temperature, so as to obtain the low-density ceramsite proppant.

The invention discloses a meat rabbit culture automated rabbit cage, comprising two cage net supports. The upper end and the lower end on one side of the cage net support are provided with moveable hooks, and the hooks on the upper end and on the lower end are respectively connected with hooks on the other cage net support through an upper layer bottom net and a lower layer bottom net. One side of the lower layer bottom net is connected with a lower layer vertical net through a nail removing gun. A lower layer material box fixing plate on one side of the lower layer vertical net is fixedly connected with a lower layer material box through an M6 screw spike. The top of the lower layer material box is fixedly connected with a lower layer feed opening through an M6 screw spike. At present, the rabbit cages are popularized and applied in Qingdao Kangda rabbit warren, Lvzhou rabbit warren, and Yangguang rabbit warren which are largest meat rabbit cultural bases. The meat rabbit culture large-scale, intensive, and factory-like automated culture device is a novel full-automatic rabbit culture device, and can breed and produce in factory-like, large-scale, and automated manner. The full-automatic culture device and a novel factory-like breeding mode bring about innovation-type revolution for meat rabbit production, and makes a great difference, and is wide in development prospect.

The invention discloses a construction method for an inclined tensioning reinforcing bar type and overhanging section steel scaffold. The construction method comprises the following steps that a load is borne in an inclined tension manner, one end of an inclined tensioning reinforcing bar is fixedly arranged on welded angle steel on the end part of overhanging section steel through a sleeve, the other end of the inclined tensioning reinforcing bar is connected onto a reinforcing bar pre-embedded in an upper structure through a sleeve, and the inclined tensioning reinforcing bar is used for bearing the load. According to the construction method, the most common materials are utilized, a scaffold can be erected in a short period, according to a series of structural measures, the requirement on bearing force and stability is met, and by fully utilizing the performance of current materials and greatly saving cost, an excellent construction effect and economic benefits are achieved.

The invention discloses olive fine dried noodles and a preparation method thereof. The olive fine dried noodles are mainly prepared from 16-22 parts by weight of olive, 42-46 parts by weight of flour, 4-6 parts by weight of glutinous rice flour, 3-6 parts by weight of wheat gluten, 0.2-0.25 parts by weight of table salt, and 0.1-0.15 parts by weight of dietary alkali. The olive fine dried noodles retain nutrients and an original taste of olive, and has functions of clearing heat and removing toxins, relieving sore throat and reducing phlegm, promoting the production of body fluid to quench thirst, eliminating vexation and dispelling the effects of alcohol, and decomposing fishbone. The preparation method has the advantages of simple processes, low cost and obvious economic benefits.

The invention discloses a formula of a photosynthetic bacteria culture medium. The basal culture medium of photosynthetic bacteria comprises an amino acid concentrate and a Chinese medicinal herb extract, wherein the amino acid concentrate accounts for 0.2-0.3% of the total mass, and the Chinese medicinal herb extract accounts for 0.5-0.8% of the total mass. The formula has the beneficial effects that 1, the added amino acid concentrate containing rich nutrients such as amino acid, trace elements, multiple polysaccharides and vitamin B is incomparable for any single organic matter; meanwhile, the amino acid concentrate depends on buffer pairs constituted by various groups, so that acid and alkali can be effectively resisted, the pH value does not have an obvious change, the buffer capacity is large, and the pH value of the photosynthetic bacteria culture medium can be stabilized; 2, the Chinese medicinal herb extract of mistletoe, dried orange peel and honeysuckle is added, and the Chinese medicinal herbs have the effect of inhibiting sundry bacteria in the photosynthetic bacteria, so that the bacteria inhibiting effect of the photosynthetic bacteria is improved; meanwhile, the mistletoe, the dried orange peel and the honeysuckle which contain organic acids can provide a carbon source for the growth of the photosynthetic bacteria, so that considerable economic benefits can be brought.

The invention discloses a rapid propagation method for cyclobalanopsis glauca tissue culture. The rapid propagation method comprises the work procedures of selecting explant, processing the explant, inducing and culturing initial buds, multiplication culturing, culturing strong buds and rooting culturing and comprises the steps of collecting underyearling twigs of cyclobalanopsis glauca which is in half lignifications and grows robustly as the explant, pruning and sterilizing the explant, inoculating the explant into an initial bud inducing and culturing medium to obtain the initial buds, then inoculating the initial buds into a multiplication culturing medium, forming cluster buds after 3 to 4 periods of multiplication culture, inoculating the cluster buds into a strong bud culture medium to be cultured and finally inserting single buds with the height larger than or equal to 2cm into a rooting culture medium to be induced and rooted. The rapid propagation method disclosed by the invention shortens a seedling culture period of the cyclobalanopsis glauca, saves seedling culture materials, overcomes the problems that a traditional seedling culture method needs a lot of seedling culture materials and has a long period, greatly reduces production cost, improves production efficiency and has better economical benefit, social benefit and ecological benefit.

The invention discloses a method for producing aluminum oxide from high-carbonate bauxite, and the method comprises the following steps: mixing the high-carbonate bauxite, lime and a sodium aluminatesolution, grinding, activating ore pulp with carbonate, and carrying out solid-liquid separation; sending the separated carbonate-rich sodium aluminate solution to an evaporation process to precipitate sodium carbonate and discharge salt, supplementing alkali to the separated solid phase by the mother liquor obtained by evaporation, then entering a dissolution process, and causticizing the sodiumcarbonate obtained by evaporation to recover alkali; and settling, separating and washing the dissolved ore pulp to enter a decomposition process to obtain aluminum hydroxide, and roasting to obtain the aluminum oxide. The problem that production cannot be normally carried out due to unsmooth material passing of a dissolution flash evaporator can be avoided, meanwhile, the viscosity of a liquid-phase material in the whole production system can be reduced, the power consumption in the solution or slurry material conveying process can be reduced, in addition, the decomposition rate can be increased due to the fact that the carbon alkali of the solution is reduced, and the production cost is reduced. And finally, the alumina yield of the whole production system is improved.

The invention belongs to the technical field of building materials, and particularly relates to a non-calcined desulfurized gypsum hydraulic composite gel system. The non-calcined desulfurized gypsum hydraulic composite gel system is prepared from desulfurized gypsum, ore slag powder, metakaolin, calcined gangue, calcined clay, diatomite, cement, sodium silicate, magnesium fluosilicate and nanometer ettringite. The non-calcined desulfurized gypsum hydraulic composite gel system has the advantages that the problem of resourceful and high-efficiency utilization of the desulfurized gypsum is solved, and the large-absorption amount, low-energy consumption and high-efficiency resourceful utilization goals of the desulfurized gypsum are realized; the problems of low hydration crystallizing speed, low strength, poor water-resistant property and the like of the desulfurized gypsum are effectively solved; the non-calcined desulfurized gypsum hydraulic composite gel system can be used for replacing silicate cement to be widely applied into the building materials, and especially being suitable for building systems with relatively low strength requirements.

The invention discloses a low-cost beet mechanical precision spaced sowing cultivation method, relates to a beet cultivation method, and aims at solving the problems of low beet output, low benefits and high production cost in the existing beet cultivation. The beet cultivation method comprises the following steps of: I, performing subsoiling farming on a land parcel with flat terrain and good water drainage property and not used for growing beet for more than 4 years; II, performing formula deep fertilization; III, early sowing: performing mechanical precision spaced sowing of the beet seeds by a mechanical precision sowing machine; IV, disposing weeds in the field for the stem leaves of the seedling; V, prevention and control of diseases and insect pests: preventing and controlling the soil insects, cabbage moths and cercospora beticola; and VI, performing mechanical harvesting after the beet is ripe. With the adoption of the low-cost beet mechanical precision spaced sowing cultivation method, the average output of the beet roots reaches 45.2t/hm<2>, the sugar content of the beet roots is increased by 0.6 degrees over the beet roots obtained by common artificial cultivation, and the production cost is effectively reduced; and the method disclosed by the invention is mainly applied to the beet cultivation of the main production area of beet.

The invention relates to the technical field of graphite preparation, in particular relates to a binary graphitization furnace which is combined by adopting a parallel connection way. The binary graphitization furnace comprises a first furnace body (1) and a second furnace body (2), wherein a middle combination part of the first furnace body (1) and the second furnace body (2) forms waste heat flue space (3); a circulating tube is arranged in the waste heat flue space; the circulating pipe enters the waste heat flue space (3) from an inlet (4) formed in the front surface of the middle combination part and stretches out of the waste heat flue space (3) from an outlet (5) formed in the front surface of the middle combination part; an axial flow fan is arranged at the position of the outlet of the waste heat flue space (3). The binary graphitization furnace disclosed by the invention is reasonable in design; compared with an existing graphitization furnace kiln, the actual effects of high heat efficiency, good safety, capability of implementing forced cooling and the like are obtained; meanwhile, the binary graphitization furnace is clear in structure and energy-saving purpose, has very good practical performances of safety, easiness in operation and the like and has very obvious economic benefit after implementation.

The invention discloses a production method of heavy alkyl benzene sulfonic acid for producing an oil-displacing agent. The production method comprises the following steps: by taking heavy alkyl benzene as a raw material, rectifying and cutting the raw material in a distillation tower; selecting fractions of which the distillation range is 310 to 410 DEG C; adding the obtained fractions into alkyl benzene of C12 and C16, wherein the mass percentage of C12 is 24% to 26%, the mass percentage of C16 is 14% to 16%, and the mass percentage of the cut alkyl benzene is 58% to 62%; and sulfonating the mixed fractions to finally obtain the heavy alkyl benzene sulfonic acid. The oil-displacing agent produced by taking the heavy alkyl benzene sulfonic acid QC-801 as a main raw material is relatively good in oil solubility and water solubility during actual use, greatly improved in oil displacement effect, higher than 30% in oil displacement rate, and higher than 1.0*10<-3>mN/m in interfacial tension.

The invention relates to the technical field of PVC films, in particular to an electromagnetic wave radiation prevention PVC environment-friendly composite film material. Thecomposite film material comprises a mesh cloth layer, a gold foil layer and an electromagnetic wave radiation prevention material layer which are sequentially connected from top to bottom. The electromagnetic wave radiation prevention material, the gold foil and the mesh cloth are combined, so that the composite film material not only has better anti-electromagnetic wave and anti-radiation effects, but also has better tensile and tear-resistant properties. In addition, the product also has the advantages of lightness, thinness and the like, is low in cost, and has very high market competitiveness and remarkable economic benefits.