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50results about How to "Avoid regrouping" patented technology

Superfine ground calcium carbonate powder production method

The invention belongs to the field of nonmetallic mineral processing and specifically relates to a superfine ground calcium carbonate powder production method. The method comprises the following steps: crushing the marble raw material into coarse calcium carbonate having the diameter of less than or equal to 1cm; grinding the coarse calcium carbonate by use of a dry grinding mill to obtain a calcium carbonate powder mixture; performing grading treatment on the calcium carbonate powder mixture to obtain a first-stage powder having the granularity greater than j, a second-stage powder having the granularity within the range of j-k, and the third-stage powder having the granularity less than k, next, returning the first-stage powder to the dry grinding mill for grinding, performing wet grinding on the second-stage powder, directly feeding the third-stage powder to a product homogenization silo for homogenization or wet grinding, wherein k is smaller than j; and after the all wet-ground calcium carbonate slurry is dried and crushed, homogenizing and packaging. The superfine ground calcium carbonate powder production method is capable of effectively saving the energy under the premise of guaranteeing the product quality and the production efficiency.
Owner:SICHUAN SHIMIAN JUFENG POWDER

Raw material mixing and grinding device for ceramic dry granulation

A raw material mixing and grinding device for ceramic dry granulation comprises a mixing box, a first stirring shaft, a second stirring shaft, and a driving device; the first stirring shaft and the second stirring shaft both penetrate the mixing box, the parts of the first stirring shaft and the second stirring shaft in the mixing box are both provided with blades at intervals; the output terminal of the driving device is connected to the first stirring shaft, the second stirring shaft is connected to the first stirring shaft through a transmission device; and the mixing box is provided with a material outlet. The raw materials are sheared and grinded by two oppositely-arranged rollers, and the blades, which are arranged on the stirring shafts at intervals, can grind the raw materials. Furthermore, the provided raw material mixing and grinding device can guarantee the mixing effect by avoiding the adherence of sticky raw materials; thus the sticky raw materials and poor materials can be fully mixed, the re-conglomeration after grinding is avoided, the mud can be further grinded into fine powder in the post steps of baking and grinding, and the fine powder can be applied to the final dry powder wetting and granulating technology.
Owner:FOSHAN RONGZHOU NO 2 BUILDING CERAMICS FACTORY

Novel oil soluble viscosity breaking agent for thickened oil recovery

The invention relates to a novel oil soluble viscosity breaking agent for thickened oil recovery. The novel oil soluble viscosity breaking agent for thickened oil recovery consists of the following raw materials in part by weight: 60 to 80 parts of maleic anhydride, 10 to 20 parts of para-hydroxyl anisole, 130 to 170 parts of methylbenzene, 2 to 4 parts of crylic acid, 3 to 5 parts of para-toluenesulfonic acid, 0.2 to 0.6 part of azodiisobutyronitrile and 260 to 300 parts of dichloroethane. The novel oil soluble viscosity breaking agent for thickened oil recovery is prepared by the following steps of: adding the maleic anhydride, the para-hydroxyl anisole and the methylbenzene into a reaction kettle; stirring and heating to 80 DEG C; after dissolution, adding the crylic acid and the para-toluenesulfonic acid; performing reflux reaction for 3 to 4 hours; cooling to room temperature; filtering to obtain a maleic anhydride solvent; placing the maleic anhydride solvent into the dichloroethane; heating to 60 DEG C; stirring for 2 to 3 hours; adding the azodiisobutyronitrile under the condition of introducing nitrogen; heating to 90 to 100 DEG C; after 4 hours, stopping heating; washing by using a 10 percent sodium hydroxide solution until the material is alkalescent; washing by using distilled water until the material is neutral; drying at the temperature of 40 DEG C for 6 hours, wherein the vacuum degree is -0.02 to -0.03 mpa; filtering; drying at the temperature of 60 DEG C for 4 to 6 hours, wherein the vacuum degree is -0.05 to -0.06 mpa; and cooling to room temperature to obtain the novel oil soluble viscosity breaking agent. The novel oil soluble viscosity breaking agent is needed to be used together with thin oil, wherein the ratio of the viscosity breaking agent to the thin oil is 1:4; and the adding amount of the pure agent is 1,300 to 5,000 ppm.
Owner:XINJIANG DELAND

Environment-friendly wax removal agent and preparation method thereof

The invention relates to an environment-friendly wax removal agent and a preparation method thereof, and belongs to the technical field of surface treatment. According to the environment-friendly waxremoval agent and the preparation method thereof, hexamethyldisilazane is adopted to conduct surface modification on diatomaceous earth, the oleophylic property of the diatomaceous earth is improved,a methyl group successfully replaces a hydroxyl group, the numbers of hydrophilic silicon hydroxyl groups are decreased, the density of electron clouds around silicon atoms is increased, the shieldingeffect is enhanced, and binding energy of the silicon atoms and oxygen atoms is reduced; and the property of particle adsorption wax is enhanced by the modified methyl group, meanwhile, the diatomaceous earth can serve as inorganic cleaning particles, in the wiping process with the surface of workpieces, the wax is removed through friction and the adsorption effect, paraffin thirsty bacteria cultured and clustered on the surface of the diatomaceous earth can effectively decompose the wax and synergistically cooperates with oleinic acid to adsorb and dissolve an alcohol amine compound of stearic acid and the oleinic acid in polishing wax, wax scale is stripped out from a substrate, and the wax removal efficiency of materials is improved.
Owner:石磊

Method for rapidly separating immunomagnetic beads

The invention discloses a method for rapidly separating immunomagnetic beads. The method can be applied to chemiluminescence instruments and nucleic acid extractors. The method is characterized by comprising the steps of: incubating immunomagnetic beads enveloping antibodies/antigens, the antibodies/antigens marked by markers and a to-be-detected object in a reaction cup; after the reaction is finished, a small permanent magnet is added into the reaction cup to adsorb the immunomagnetic beads, so that an antigen-antibody-magnetic bead immune complex is separated from the reaction liquid; and cleaning the antigen-antibody-magnetic bead immune complex with a cleaning liquid, then adding a luminescent substrate/excitation system into the reaction cup to drive a luminescent substance in the reaction cup to release photons, and detecting luminescent intensity by means of photon counting. According to the method, the small permanent magnet is placed in the reaction liquid, so that the smallpermanent magnet is in direct contact with the immunomagnetic beads in the reaction liquid, rapid separation is realized within an extremely short time (3-15s), the separation speed is high, the efficiency is high, the loss rate of the immunomagnetic beads is significantly reduced, the structure of the magnetic separation module in the instrument design process is greatly simplified, and the timefor separating and cleaning the immunomagnetic beads from the reaction liquid is shortened.
Owner:姜宇腾

A device for unclogging municipal drainage pipes and its implementation method

The invention discloses a device for dredging blockage of municipal drainage pipes and an implementation method thereof, belonging to the technical field of dredging blockage of municipal drainage pipes, including electronic control equipment, a Z-axis adjustment mechanism, an X-axis adjustment mechanism and a dredging mechanism, and an X-axis adjustment mechanism The output end of the pump is fixedly connected with the dredging mechanism, and the X-axis jacking cylinder drives the dredging mechanism to push into the drainage pipe, and the outer wall of the outer cover scratches the inner pipe wall of the drainage pipe to realize the cleaning of the blockage adhered to the inner wall of the drainage pipe During the process, the outer cover has a certain degree of elasticity, which scrapes off the easily scratched blockages and prevents the device from getting stuck inside the drainage pipe. When the outer cover is pushed up, the speed of the sewage in the pipeline passing through the outer cover is accelerated. Cooperate with the hook rod and connecting rod The cleaning of blockages improves the dredging efficiency, and the blockages mixed in the sewage are hooked by the hook rod and connecting rod to realize the preliminary cleaning of the blockages inside the drainage pipes, avoiding the re-accumulation of blockages inside the drainage pipes, and effectively avoiding rework.
Owner:朱士红
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