58results about How to "Reduce dosage" patented technology

The invention relates to a recycled aggregate mixture which is composed of ordinary Portland cement, recycled aggregate, primary aggregate, primary stone powder and recycled stone powder, and the content of the primary aggregate is 35-43%; the content of the recycled aggregate is 18%-25%, the content of the raw stone powder is 25%-27%, and the content of the regenerated stone powder is 12%-15%. The particle size of the primary aggregate is 5-37.5 mm, the apparent density of the primary aggregate is 2.615-2.627 g/cm < 3 >, and the mud content of the primary aggregate is 0.5-1.5%; the particle size of the recycled aggregate is 5-37.5 mm, the apparent density of the recycled aggregate is 2.590-2.611 g/cm < 3 >, and the mud content of the recycled aggregate is 0.7-1.8%; the particle size of the raw stone powder is 0-5 mm, the apparent density is 2.596-2.597 g/cm < 3 >, the mud content is 3.2-3.4%, the particle size of the regenerated stone powder is 0-5 mm, the apparent density is 2.532-2.531 g/cm < 3 >, and the mud content is 4.7-4.9%. By adopting the mixture and using the recycled aggregate mixture as a road material, various indexes of the road material can meet the standard requirements under the coupling action of long-term bearing load and environmental media, and meanwhile, the recycled aggregate mixture has good use performance and durability.

The invention discloses a method for reducing COD content in discharged wastewater of a cyclohexanone device, wherein on the premise of ensuring a water seal function of a condensate recovery tank, the condensate in the condensate recovery tank is continuously or discontinuously pumped into a decomposition reaction kettle by arranging a booster pump. According to the invention, a condensate recovery tank and decomposition reaction kettle series production process is designed, the condensate in a condensate recovery tank is continuously or discontinuously pumped into a decomposition reaction kettle by arranging a booster pump, the condensate as the supplemented water of the decomposition reaction kettle can replace process water to supplement the decomposition reaction kettle while the condensate is extracted and separated through a large amount of cyclohexane in the decomposition liquid, so that the content of the organic matter in the condensate is reduced.

The invention discloses an adsorbent for removing carbon monoxide in gas as well as a preparation method and application of the adsorbent. The adsorbent comprises the following components based on the weight of the adsorbent: 1) 10-80% of hydrotalcite-like compound; 2) 2-40% of basic cupric carbonate; 3) 2-40% of an iron-containing compound; 4) 2-30% of a magnesium-containing compound; wherein the hydrotalcite-like compound is [Cu<x>Mg<(1-x-y)> Fe<y> (OH) <2>] (CO<3>)< y/2>.mH<2>O, and in the formula, x is 0.1-0.6, y is 0.18-0.30, and m is 0.12-0.75. The adsorbent has the characteristics of high efficiency of removing carbon monoxide in gas, simple and convenient preparation method, environment-friendly and pollution-free production process, simple and convenient operation and the like.

The invention discloses a method and system for treatment of kiln slag including lead and zinc. The method includes the steps that (1) the kiln slag including lead and zinc is dried, so that a kiln slag dried material is obtained; (2) the kiln slag dried material, pulverized coal and binder are mixed, so that a mixed material is obtained; (3) the mixed material is subjected to pelletizing treatment, so that mixed pellets are obtained; (4) the mixed pellets are fed to a feeding zone of a rotary hearth furnace, the mixed pellets are reduced through a preheating zone and a high-temperature zone of the rotary hearth furnace in sequence, smoke dust containing silver, zinc oxide and lead oxide is exhausted from the preheating zone, and the obtained metallized pellets are discharged from a discharging zone; and (5) the metallized pellets are subjected to ore grinding magnetic separation treatment, and metal iron powder and tailings are obtained. By the adoption of the method, carbon, iron, lead, zinc and silver in the lead and zinc kiln slag can be recycled comprehensively; and moreover, the recovery rate of the iron can reach 80%, the volatilization rate of the zinc can reach 96%, the volatilization rate of the lead can reach 95%, and the volatilization rate of the silver can reach 90%.

The invention relates to the field of stainless steel smelting, particularly to a stainless steel smelting method capable of recycling chromium from smelting slag. Through the method, chromium in oxidizing slag of an electric furnace can be recycled, and the utilization effect of steel slag is improved. According to the method, pre-reduction operation is no longer performed in the electric furnace technology, and the slag discharge amount of the electric furnace is increased. Liquid stainless steel is decarburized by using the electric furnace slag under the high vacuum conditions in the VOD refining process, and the purposes of decarburization and reduction of the furnace slag are achieved through high-content oxides, such as Fe<2>O<3> and Cr<2>O<3>, in the electric furnace slag. The electric furnace slag is used as a decarburization oxygen source in the decarburization stage during VOD smelting, and chromium and nickel oxides in the electric furnace slag are reduced and enter steel through decarburization and deoxidizing agent reaction; and the amount of ferrochromium added in the VOD procedure is reduced, and chromium and nickel resources in the furnace slag are reduced and recycled.

The invention discloses a semiconductor processing device which comprises a semiconductor processing module and a fluid transfer module. The fluid transfer module comprises a support frame, a plurality of base plates, various valves, a pump, a meter, a transducer, connectors and pipelines, wherein the base plates are assembled on the support frame and form a fluid space, the various valves, the pump, the meter, the transducer, the connectors and the pipelines are used for transferring fluid, at least one base plate is provided with mounting holes, and each valve is provided with an end portion which is communicated with an end port, penetrates through the base plates and extends into the fluid space. The fluid transfer module has the advantages of being simple in structure, convenient to flexible to assemble and easy to maintain. Further, assemblies can be changed conveniently and the like.

The invention relates to bactericide for kidney beans. The form of the bactericide is a microcapsule suspension-suspension agent, and the bactericide is prepared from lentinan, plant activator protein, flusilazole, polyvinyl alcohol, silkworm excrement, urea, polyethylene glycol, methylbenzene, phenemyl phenol-formaldehyde resin polyoxy ethylether, silicone oil, sodium hydroxide, hydrochloric acid and deionized water. The bactericide is a compound farm chemical used for preventing and treating powdery mildew of the kidney beans, after the lentinan, the plant activator protein and the flusilazole are compounded, obvious synergism is achieved, usage amount and the use number of effective constituents are remarkably lowered, by means of the bactericide, the effects of preventing and treating powdery mildew of the kidney beans are effectively enhanced, effectiveness is achieved fast, the persistent period is long, and no influence is produced on non-target crops.

The invention discloses an ozone catalytic oxidation and biochemical compound treatment device of reverse osmosis concentrated water and an application method of the ozone catalytic oxidation and biochemical compound treatment device. The ozone catalytic oxidation and biochemical compound treatment device is characterized by comprising a fixed bed catalytic oxidation tower, an empty exposure degassing tower, a fluidized bed biological membrane reactor, a blower, an ozone generator and a pipeline mixer, wherein a reverse osmosis concentrated water storage tank is connected with the fixed bed catalytic oxidation tower through a first pipe line, the pipeline mixer is arranged on the first pipeline and is connected with the ozone generator, the fixed bed catalytic oxidation tower is connected with the empty exposure degassing tower through a second pipeline, the empty exposure degassing tower is connected with the fluidized bed biological membrane reactor through a third pipeline, an outlet of the fluidized bed biological membrane reactor is connected with a secondary sedimentation tank, and aeration pipes connected with the blower are respectively arranged in the fixed bed catalytic oxidation tower, the empty exposure degassing tower and the fluidized bed biological membrane reactor. According to the invention, the pH value regulation of the reverse osmosis concentrated water is not needed; because catalysts participate in the oxidation reaction, and the oxidation reaction is only controlled at the organic pollutant molecular structure destroy stage, the ozone addition quantity is small, only about 40mg/L is needed, the treatment cost is low, and the treatment cost of sewage is about 0.6Yuan/m<3>; and the method has the advantages that the secondary pollution is avoided, and the green and environment-friendly effects are realized.

The invention relates to a preparation method of low-temperature-resistant binary fluorine rubber, belonging to the technical field of fluorine chemical industry. The preparation method is characterized by comprising the following steps of: 1) mixing 1,1-difluoroethylene, hexafluoropropylene and perfluoro methyl vinyl ether in a molar ratio of (60-80):(15-30):(2-8) to obtain a monomer mixture forlater use; and 2) reacting the monomer mixture in an aqueous dispersion form under the action of an initiator, an emulsifier and a chain transfer agent in a reaction kettle, adjusting the temperatureto 60-95 DEG C, pressure to 1.0-3.0MPa and stirring rate to 400-700 r/min, and carrying out copolymerization reaction for 3-7 hours to obtain a finished product. The preparation method of the low-temperature-resistant binary fluorine rubber has the advantages that the preparation process is simple, the use amount of expensive perfluoro methyl vinyl ether in the reaction is low, and the productioncost is greatly lowered; and the glass transition temperature of the prepared fluorine rubber can be effectively reduced by 2-7 DEG C and the brittleness temperature is reduced by 10-18 DEG C, thereby being suitable for low-temperature sealing requirements.

The invention discloses a method for preparing double metal cyanide catalyst, so as to obtain the double metal cyanide catalyst with the structure of Aa Bb Cc Dd (H2O) e. The method comprises: halide water solution which has a certain concentration and contains one or more divalent metal(s) is gradually dripped with cyanide water solution containing one or more variable valency metal(s) B; after being filtered and fully washed for reaction, precipitate can be formed; then, chelating agent is added for reaction; after being separated and dried, the double metal cyanide catalyst can be obtained. The preparation method is simple and does not produce a great deal of waste water which is harmful to the environment; the unreacted chelating agent can be recycled, so that the production cost is low, and the method is beneficial to environmental protection. When being applied to the copolymerization of carbon dioxide/epoxide, the catalyst has good application effect.