40 results about "Mineralogy" patented technology

The aqueous clay waste formed during a phosphate or other mineral recovery processes is flocculated in a well which is generally formed in a sedimentation lagoon, the supernatant is taken from the top of well and is recycled to the main flotation or other separation process (generally after running across sediment in the lagoon) and the thickened sediment which is formed in the well is pumped from the base of the well to one or more final lagoons where it is converted to a solid sediment by sedimentation and evaporation.

The invention discloses a method for constructing horizontal salt rock dissolving cavity reservoirs, and belongs to categories of salt deposit water dissolving mining and salt rock dissolving cavity controlling, dissolving, constructing and utilizing. The method for constructing the horizontal salt rock dissolving cavity reservoirs has the advantages that the quick horizontal salt rock dissolving cavity reservoirs which are high in efficiency and capacity and have shapes easy to control can be constructed by means of directional drilling and cyclic retreating type single-well convection dissolving; merits of a single-well convection process and merits of double-well directional butting communication convection process are combined with one another, fresh water is injected into salt rock deposits by patterned hole jet flow sections 3 on the side walls of blind ends of center pipes, brine which is generated after salt rock is dissolved is drained out of earth surfaces from annular spaces between the center pipes and middle pipes, cavities are constructed by means of periodic sectioned retreating type dissolving, and large horizontal dissolving cavities can be constructed by means of single-well convection; the lengths of horizontal wells can reach 800-1000m, the constructed horizontal salt rock dissolving cavity reservoirs are high in capacity, and the method is a perfect method for quickly constructing the large horizontal salt rock dissolving cavity reservoirs by means of dissolving.

The invention discloses a preparation method of a special-infiltration functional fabric surface with self-cleaning and oil-water separation functions. The preparation method comprises the following steps: dissolving titanium potassium oxalate into deionized water, slowly dropwise adding an H2O2 solution under the stirring action of a magnetic rotor, adjusting the pH value of the solution by virtue of HCl to obtain a prepared solution, transferring the prepared solution into a blue-cap reagent bottle, adding clean cotton cloth into the blue-cap reagent bottle, and preparing the cotton cloth with a nano-TiO2 surface by virtue of a one-step water bath process; soaking the cotton cloth with the nano-TiO2 surface into a fluorosilane solution, taking out the cotton cloth after reacting for a certain time, and drying so as to obtain the cotton cloth with the special-infiltration functional fabric surface with the self-cleaning and oil-water separation functions. The preparation method has the advantages that the process is simple and convenient and is easy to operate, the reaction conditions are mild, the special-infiltration functional fabric surface has durable and stable super-hydrophobic self-cleaning performance and a good oil-water separation function, and fabrics have excellent comfort levels and mechanical properties.

The invention relates to a high-temperature iron-based zeolite molecular sieve honeycomb type denitration catalyst and a preparation method thereof, and belongs to the technical field of atmospheric pollution treatment technologies and environmentally friendly catalyzing materials. The preparation method comprises the following steps: mixing ferrous salts with ferrite; synthesizing a zeolite molecular sieve, natural zeolite molecular sieve powder, attapulgite clay or kaolin, glass fibers, an organic binding agent, wood pulp or sesbania cannabina powder, stearic acid and glycerinum; and carrying out mixing, ageing, extrusion forming, drying and roasting to obtain the iron-based zeolite molecular sieve honeycomb type denitration catalyst. According to the catalyst, the zeolite molecular sieve and natural raw mineral materials which have excellent thermal stability are used as carriers, and the running stability, the sintering resistance and the mechanical strength of the catalyst in a high-temperature environment are improved. The obtained honeycomb type denitration catalyst has good water resistance and sulfur poisoning resistance, and the conversion ratio of oxynitride is greater than 90% under the conditions that the temperature is in the high-temperature range of 400-600 DEG C and the air speed is 10,000 h<-1>.

The invention provides a slow-release compound fertilizer, which is a spherical or near-spherical granular compound fertilizer having a layered structure, wherein the innermost layer is a nitrogenous fertilizer layer; the intermediate layer is a potassic fertilizer layer; the outer layer is a mineral layer containing phosphorus; proportions of nitrogen, phosphorus and potassium are determined according to thicknesses of the fertilizer layers. The invention further provides a production method of the slow-release compound fertilizer. Tailing pulp is generated after heavy metals, manganese and iron are recycled from leached residues of production enterprises for electrolyzing manganese metal and manganese dioxide. The production method comprises the following steps of: adding flocculating agent, the weight of which is 0.01-0.02% of that of tailing mud, into the obtained tailing pulp, carrying out filter pressing by using a belt filter press, wherein the moisture content of filtered mud is 40-50%; and then, adding phosphatic fertilizer into the filtered mud, uniformly mixing, and carrying out calendering forming three times and roller-crushing calendaring granulating once by adopting a fertilizer granulator and drying to obtain the slow-release compound fertilizer.

The invention provides an inhibitor-combined natural gas hydrate replacement mining method, and belongs to the technical field of marine natural gas hydrate mining. Firstly, a plurality of mining wells are drilled in a mining area to the interior of a natural gas hydrate mineral deposit, and each mining well comprises a vertical well section and a horizontal well section; during exploitation, an inhibitor is injected into a reservoir through an injection well, a pore channel is opened, the stratum permeability is improved, and then carbon dioxide is injected for replacement exploitation. Diffusion of the inhibitor and carbon dioxide between two mining wells is facilitated by controlling the pressure difference between the injection well and a collection well. In a replacement mining process, the inhibitor can prolong the generation time of carbon dioxide hydrate injected into the periphery of a shaft, so that the carbon dioxide diffusion distance is increased, the contact area of replacement reaction is increased, and the mining depth and efficiency are improved. The method is easy to implement, the replacement depth and speed can be greatly increased, and the method can be used for large-scale exploitation of natural gas hydrates.

The invention discloses a coating material for sealing the coal wall of a gob-side coal roadway. The coating material comprises 100 parts of cement, 3-6 parts of an environmentally-friendly interfacepolymer solid material and 10-15 parts of a mineral mixture and other additives, the environmentally-friendly interface polymer solid material comprises, by mass, 100 parts of an acrylate polymer solid and 8-9 parts of polyethylene synthetic resin, and the mineral mixture and other additives comprise, by mass, 5-10 parts of silica fume, 10-15 parts of common fly ash or slag, 1-2 parts of a superplasticizer and trace parts of basalt chopped fibers. The coating material is a novel composite material for guniting, and meets the requirements for plugging the coal wall of the gob-side coal roadway.

The invention relates to a gravity separation-flotation combined beneficiation process for phosphate ores. The gravity separation-flotation combined beneficiation process for phosphate ores comprisesthe following steps: feeding phosphate ore pulp into a three-segment spiral chute gravity separation process to obtain reselected concentrate and reselected tailings; feeding the reselected concentrate into a desilicication reverse flotation process to obtain desilicicated concentrate and desilicicated tailings; feeding the desilicicated concentrate into a magnesium removal reverse flotation process to obtain double reverse concentrate and magnesium removal tailings; feeding the reselected tailings into a thickener to be concentrated to obtain a thick bottom flow; feeding the thick bottom flowinto a direct flotation process to obtain direct flotation concentrate and direct flotation tailings; feeding the direct flotation concentrate into a reverse flotation process to obtain direct and reverse concentrate and reverse flotation tailings; combining the desilicicated tailings, the direct flotation tailings and the reverse flotation tailings to obtain final phosphate tailings; and combining the double reverse concentrate with the direct and reverse concentrate to obtain the final phosphate concentrate. The process has the advantages that the desilicication reverse flotation is free ofslurry interference, the silicate removal efficiency is high, direct flotation is free of coarse grain level interference, the consumption of a reagent is low, the yield of a foamed product floatingin the beneficiation process is low, and a flowage structure is good in stability and high in controllability.

The invention discloses damp-proof light plastering gypsum capable of releasing negative oxygen ions, and a preparation method of the plastering gypsum. The plastering gypsum comprises the following components in parts by weight: 60-85 parts of a beta semi-hydrated gypsum component, 8-15 parts of a light aggregate component, 0-5 parts of a pH regulator component, 0.1-0.5 part of a water-retainingagent component, 0.01-0.1 part of a modifier component, 0.05-0.5 part of a waterproof agent component, 0.1-0.4 part of a retarder component, and 1-10 parts of a negative oxygen ion powder component. The plastering gypsum provided by the invention not only has all the properties of flame retardance, environmental protection, heat insulation, sound absorption, impact resistance and the like of traditional plastering gypsum, but also has the functions of moisture prevention and negative oxygen ion release.

The invention provides a fireproof mineral silicone rubber composition, a fireproof mineral silicone rubber material, a preparation method thereof and a power line containing the fireproof mineral silicone rubber material. The fireproof mineral silicone rubber composition comprises, by weight, 50-100 parts of methyl vinyl silicone rubber, 30-50 parts of montmorillonite, 5-10 parts of quaternary ammonium salt surface modifier, 10-20 parts of low-melting-point glass powder, 30-50 parts of aluminum hydroxide and 5-10 parts of polyol. A ceramic layer structure formed by the fireproof mineral silicone rubber composition is stable and even in mechanical performance distribution, and the toughness and fireproof performance of the power line is further increased when the ceramic layer structure is used as the sheath of the power line.

The invention discloses a method for up-down replacement collaborative mining of close distance coal seams. The method is suitable for use of underground coal mines. The method includes three stages of coal seam mining sequence design, mining roadway and working face excavating and mining replacement design and stoping interval design, according to the coal quality conditions and market requirements, a main coal mining seam and a cooperating coal mining seam are determined, a first mining face haulage way and a tail gate are drifted along a bottom plate of the main coal mining seam, and meanwhile, a cooperating mining face mining roadway is arranged in the stress decreasing area of the cooperating coal mining seam; and when the main mining face is stoped at a certain distance, the cooperating mining face is then stoped, the mining sequence is repeated until the close distance coal seams are stoped. The technical problem of close distance coal seam mining at the single-wing mining areais effectively solved, the mine replacement tension and working face mining effect are relieved, and safe, high-efficiency and high recovery mining of the close distance coal seams is realized.

The invention relates to a stirring device for an asphalt mixture. The stirring device for the asphalt mixture comprises a primary stirring bin and a secondary stirring bin, wherein a blast type mineral powder spraying device and an air pressure type asphalt spraying device are arranged in the primary stirring bin, and a half bin type rotating stirring device is positioned at the lower part of theprimary stirring bin; a double horizontal shaft paddle stirring device is arranged in the secondary stirring bin, and a discharge port is formed on the lower end of the secondary stirring bin; the primary stirring bin is supported above the secondary stirring bin by a frustum-shaped sliding vertical support device. For the engineering problems in the prior art, the stirring device for the asphaltmixture aims at realizing efficient mixing of aggregate, asphalt and mineral powder. Through changing the mixing form of the asphalt mixture, the free movement state and effective spraying area of the mineral powder are increased, the spraying uniformity of the asphalt and the mineral powder is increased, the full range coverage of a discrete mineral powder region is realized, and the mixing quality and the mixing efficiency of the asphalt mixture are improved.

The invention relates to a mineral substance crystal for regulating uric acid, which is prepared from the following components in parts by weight: 25-45 parts of red marble, 30-50 parts of Longjiang stone and 15-35 parts of celestite. Compared with the prior art, the equilibrium liquid formed by soaking the mineral substance crystal provided by the invention has the advantages of good effect, no toxic side effect and the like, is convenient and simple in use, and can not injure the kidney, intestine and stomach.

The invention provides a separation and recovery method for waste mineral oil. The separation and recovery method comprises the following steps: a, mixing the waste mineral oil with an extraction agent and an alkaline agent and carrying out solid-liquid separation to obtain filtrate; b, subsequently carrying out liquid-liquid separation and rectification on the filtrate obtained in the step a to obtain mineral oil. Compared with the prior art, the separation and recovery method provided by the invention has the advantages that by matching the extraction agent with the alkaline agent for use,charge interference of charged iron carbon chips can be eliminated, so that rapid precipitation of solid impurities is realized and further the mineral oil is separated and recovered. By using the separation and recovery method for the waste mineral oil, provided by the invention, a waste mineral oil water system which is not obvious in sediment and layering at high temperature for a long time canbe separated and recovered; in addition, the mineral oil obtained by separating and recovering has good quality and high yield. The experimental result shows that the separation and recovery method for the waste mineral oil, provided by the invention, can be used for recovering mineral oil of waste cutting fluid and waste steel sheet washing liquid in a steel plate factory; all properties of an oil product can meet national requirements and the yield can reach 40 percent.

The invention discloses a low-smoke flame-retardant HIPS (high-impact polystyrene) formula. The formula is characterized in that 15 parts of DBDPO, 4 parts of Sb2O3, 35 parts of magnesium hydrate, 18parts of zinc borate and 15 parts of an SBS toughening agent are added into every 100 parts of HIPS. For further improvement, 15 parts of DBDPO, 4 parts of Sb2O3, 35 parts of magnesium hydrate, 18 parts of zinc borate, 15 parts of the SBS toughening agent and 6 parts of CaCO3 are added into every 100 parts of HIPS. Great flame retardation and comprehensive performances and low manufacturing cost are realized.

A method for concentrating platinum and palladium from platinum-palladium flotation concentrates is composed of the following steps of adding sulfur of which the mass accounts for 0.2%-10% of the platinum-palladium flotation concentrates according to the mass ratio (1:3-9) of the platinum-palladium flotation concentrate to sulfuric acid solutions with the concentration of 150-250 g/L; leaching for1-5h under the oxygen partial pressure of 0.5-1.0 MPa, at the leaching temperature of 120-160 DEG C, pH of less than 0.5, and the stirring speed of 400-600 r/min; after leaching, maintaining the original stirring speed, cooling to 108-114 DEG C at the rate of 0.2-0.5 DEG C/min, and holding for 1-3h; continuously cooling to room temperature at the rate of 0.4-1.0 DEG C/min and the stirring speed of 150-300 r/min; and filtering to obtain leachate and leaching residues, and screening the leaching residues with a 100-mesh screen to obtain platinum-palladium concentrates and tailings. The method is simple in operation, and the purposes of concentrating precious metal including platinum and palladium as well as three-phase separation of base metal including copper, nickel, zinc, iron and silicate tailings are achieved synchronously; and the content and enrichment ratio of the precious metal in the platinum-palladium concentrates are high, and the subsequent separation cost is reduced obviously.

The invention relates to the technical field of geotechnical engineering, and particularly discloses a high-stability roadbed filler and a preparation method thereof. The roadbed filler comprises the following raw materials by weight: 20 to 30 parts of gravelly soil, 10 to 20 parts of limestone, 40 to 55 parts of fly ash, 10 to 20 parts of yellow stone powder, 4 to 6 parts of an anti-freezing agent, 2 to 4 parts of a reinforcing agent, 0.8 to 1.5 parts of calcium carbonate, 1 to 2 parts of potassium carbonate, and 1 to 2 parts of phosphogypsum, wherein the anti-freezing agent comprises at least one selected from fish collagen powder and glucose. The preparation method of the roadbed filler comprises the following steps: uniformly mixing the gravelly soil, the limestone and the fly ash, adding the yellow stone powder and the phosphogypsum, and conducting uniform mixing to obtain a first mixture; uniformly mixing the first mixture with calcium carbonate and potassium carbonate, then jointly mixing the obtained mixture with the anti-freezing agent and the reinforcing agent; and conducting uniform mixing to obtain the roadbed filler. The roadbed filler disclosed by the invention has the advantage of good anti-freezing property.

The invention discloses a preparation method of paper sheets with gypsum whiskers. The preparation method comprises the steps: taking semi-hydrated gypsum whiskers and/or dihydrate gypsum whiskers, performing calcination so as to obtain anhydrous gypsum whiskers, adding water for dispersion, adding a precipitant, performing mixing and stirring for precipitation, adding the mixture to paper pulp, performing mixing, adding water for dilution, adding a retention aid, performing stirring dispersion and dehydration forming, pressing the obtained wet paper sheets, pulling up the paper, and performing drying so as to obtain the finished paper sheets. Double modification which includes calcination and co-precipitation is performed on the gypsum whiskers so that the gypsum whiskers have a compact structure, and a water-insoluble precipitation film layer is formed on the surface of the gypsum whiskers in a covering mode, so that the solubility of the gypsum whiskers is improved, and the retention rate of the gypsum whiskers during paper filling is improved.

The invention relates to the technical field of mine air measurement, in particular to a tungsten ore underground air quality measurement device. The tungsten ore underground air quality measurement device comprises a shell body, a dust-proof mechanism is fixedly connected to the shell body, a reinforcing plate is fixedly connected to the outer side of a sealing plate, fixing frames are correspondingly connected to the two sides of the outer part of the reinforcing plate, a supporting plate is fixedly connected to the reinforcing plate, a telescopic air cylinder is fixedly connected to the upper end of the supporting plate, a bracket plate is connected to the telescopic end of the telescopic air cylinder through a connecting block, a fixing box is fixedly connected to the upper end of thebracket plate, a fixing mechanism is connected into a first through hole, the fixing mechanism is connected with a detector, and an oxygen concentration sensor and a gas concentration sensor are connected to the upper end of the detector. The invention further provides a tungsten ore underground air quality measurement method. According to the tungsten ore underground air quality measurement method and device, the oxygen concentration sensor and the gas concentration sensor are pushed to move upwards through the telescopic air cylinder, the oxygen and the gas concentration content of differentheights can be detected, and thus the detection accuracy of the underground air is higher.

The invention discloses a method for recovering powdery calcium fluoride products from calcium fluoride sludge resources, which aims to solve the problem that calcium fluoride sludge cannot be reasonably and effectively utilized. According to the technical scheme, the method is characterized by comprising the following steps of (1) collecting and storing calcium fluoride wet sludge, (2) performing steam drying to obtain granular calcium fluoride, (3) carrying out micronization by flash evaporation equipment to obtain powdery calcium fluoride, and (4) collecting and storing the powdery calcium fluoride product. According to the method, the calcium fluoride wet sludge is dried to form granular calcium fluoride, the moisture content of the granular calcium fluoride is reduced to 1-3% through the flash evaporation equipment, the granular calcium fluoride is micronized to obtain powdery calcium fluoride, the effective content of the calcium fluoride can reach 70-90%, the use standard of fluorite mineral powder is met, and the calcium fluoride can be used for replacing the fluorite mineral powder.

The invention discloses an automatic ore feeding device for magnetic separators and an automatic ore feeding control method. A plurality of ore feeding openings in one-to-one correspondence with the parallel magnetic separators are formed in an ore distribution box, and the ore feeding openings are used for ore feeding of the magnetic separators correspondingly. A control unit is electrically connected with an ore feeding pump. The working current value of the ore feeding pump can be obtained, and the working current value of the ore feeding pump reflects the circulation amount of the ore dressing process. The control unit is electrically connected with a lifting driving mechanism and used for controlling the lifting displacement of the lifting driving mechanism. The lifting driving mechanism drives material plugs to move up and down in the ore distribution box, and therefore the opening and closing state and the opening size of each ore feeding opening are changed. According to the automatic ore feeding device for the magnetic separators and the automatic ore feeding control method, the on-site flow quantity change condition can be automatically detected, the automatic adjustmentof the ore feeding quantity of the magnetic separators, the start and stop of the magnetic separators and other operations are realized according to the flow quantity change condition, the convenienceof reasonably operating the number of the magnetic separators is improved, the frequency of climbing an ore distribution box platform of the magnetic separators by on-site operators is reduced, the labor intensity of the operators is reduced, and operation safety is ensured.