35results about How to "Has a grinding effect" patented technology

The invention provides a chromium-reducing cement grinding aid and a preparation method thereof, which solves the problems of ferrous sulfate and chromium-reducing cement grinding aids in the prior art. Cement grinding aids will be gradually oxidized, which will affect the chromium reduction effect, and there is a technical problem of strict requirements on the use temperature. Its preparation comprises the following components by weight: 10-20 parts of alcohol amine; 5-15 parts of inorganic salt; 2-20 parts of organic acid; 45-83 parts of water. The chromium-reducing cement grinding aid prepared by the present invention not only has the grinding-aiding effect of the grinding aid itself, but also has strong oxidation resistance, is suitable for long-term storage, and can avoid storage being oxidized and affecting the chromium-reducing effect; the finished product is a uniform solution , can avoid the phenomenon of sediment accumulation that is easy to cause pump blockage; and has excellent high temperature resistance, and can well adapt to changes in the temperature of cement working conditions; the production process is simple, easy to operate and quality control, with obvious technical advantages and broad market prospects .

The invention provides a preparation method of an activated grinding aid for concrete composite admixture, comprising: pretreating polyacrylamide to obtain 3 + cationic polyacrylamide solution; add the K12 solution with a mass concentration of 8~12% to the cationic polyacrylamide solution at a constant speed, and at the same time, use an ultrasonic generator with a power of 200~500W and a frequency of 40~120kHz , heated to 60°C and stirred at a constant temperature for 1-2 hours; after the dropwise addition was completed, turn off the ultrasonic generator, stop stirring, and lower the temperature to 50°C for 1-2 hours; put the solution obtained after ultrasonication in a vacuum drying oven, without The activated grinding aid for the concrete composite admixture is obtained by evaporating, drying and concentrating at a temperature exceeding 50°C. The grinding aid prepared by the method of the invention can slowly release K12 molecules during the grinding process to continuously produce the grinding aiding effect, thereby greatly improving the grinding efficiency.

The invention relates to the technical field of glass, in particular to a preparation method of ultra-thin glass, comprising the following steps: (1) taking glass, soaking the glass in a thinning etchant, and performing the first thinning treatment on the glass; (2) The thinned glass is double-sided grinding and polishing; (3) The double-sided grinding and polishing glass is attached to the carrier glass, and then soaked in the thinning etchant, and the glass is subjected to the second thinning treatment to make Get ultra-thin glass. The ultra-thin glass preparation method of the present invention can prepare ultra-thin glass with thin thickness, strong light transmission, good softness, and high touch sensitivity. It is used to prepare ultra-thin glass with a thickness of 0.03mm.

The invention discloses a method for producing green ecological cement resistant to seawater corrosion by using wastes from lime factories. The cement comprises the following raw materials in parts by weight: 45-55 parts of wastes from lime factories, 40-50 parts of sulphoaluminate cement clinkers, 0.04-0.07 part of compound activating agent, 1-3 parts of early strength agent, 0.5-0.7 part of water reducing agent, 0.004-0.006 part of air entraining agent and 0.4-0.6 part of retarder. The production method is characterized by breaking, grinding and homogenizing the wastes from lime factories, the sulphoaluminate cement clinkers, the compound activating agent and the early strength agent respectively, then preparing the materials in proportion, mixing the materials, homogenizing the mixture, then adding the water reducing agent, the air entraining agent and the retarder, mixing the materials and homogenizing the mixture, thus preparing the product. The green ecological cement resistant to seawater corrosion has the excellent characteristics of high strength, resistance to seawater corrosion and seawater scouring, and the like besides the properties of ordinary cement, and is especially suitable for underground engineering, ports, wharfs and other engineering suffering corrosion of erosion media.

The invention discloses a collecting agent for copper converter slag flotation and a use method thereof. The collecting agent is a mixture prepared from butyl xanthate, butyl amine black powder and xanthate type collecting agent Y89-4 in a mass ratio of (1:1:1)-(3:2:2). When the collecting agent is used, 500-1000g / t of sodium carbonate is added in the first section of copper converter slag grinding process; after the grinding is finished, 300-500g / t of lime is added; the ore pulp pH is adjusted to 10-11; 75-125g / t of the mixed collecting agent and 30-40g / t of foaming agent terpenic oil are further added and stirred and subjected to rough selection; after the rough selection, flotation tailings are subjected to further grinding and screening; screened products are subjected to three times of scavenging; 15-30g / t of mixed collecting agent and 10-20g / t of foaming agent terpenic oil are added for each scavenging. By adopting the technical scheme provided by the invention to process copper converter slag of which cooper content is 5.54 percent, copper concentrate of which the copper grade is 36.26 percent and the recovery rate is 94.82 percent can be obtained through a small-sized closed circuit test, and the copper grade of the floatation tailing is 0.35 percent, so that the recovery index is effectively improved; and meanwhile compared with an ordinary agent, the combined agent has the advantages of low dosage, good index, less pollution and the like.

The invention provides a composite dechrome cement grinding aid and a preparation method thereof, which solves the problem of ferrous sulfate and chromium depleting cement grinding aids in the prior art. Type cement grinding aids will be gradually oxidized, which will affect the chromium reduction effect, and there is a technical problem of strict requirements on the use temperature. Its preparation comprises the following components by weight: 10-20 parts of alkanolamine; 5-30 parts of chromium-reducing additive; 0.5-8 parts of organic acid; 42-84.5 parts of water. The composite chromium-reducing cement grinding aid prepared by the present invention not only has the grinding aid effect of the grinding aid itself, but also has strong oxidation resistance, is suitable for long-term storage, and can avoid storage being oxidized and affecting the chromium-reducing effect; the finished product is uniform solution, which can avoid the phenomenon of sediment accumulation and easy pump blockage; and has excellent high temperature resistance, which can well adapt to the temperature change of cement working conditions; the production process is simple, easy to operate and quality control, and has obvious technical advantages and a broad market prospect.

The invention discloses a spherical dog chew and a preparation method thereof, and belongs to the field of pet foods. The spherical dog chew comprises a hollow ball body, the ball body comprises two hemispheres, the outer side walls of the two hemispheres are wrapped with an elastic coating layer, and the two hemispheres are sealed in the coating layer. The dog chew has the advantages that the ball body of a hollow spherical structure enables the dog chew to have better elasticity, the hollow structure of the ball body is achieved by the splicing of the two hemispheres, which can effectively reduce the processing difficulty and cost, and the elastic coating layer further enhances the flexibility of the dog chew and improves playability. The spherical dog chew has higher attraction to dogs,and has a better interaction function of human and pets, and the dog chew itself has a teeth grinding effect on the dogs.