82results about How to "Reduce particle content" patented technology

This invention discovers a special pigment groom hectograph paper and its preparation. It utilizes the advantages of high yields machine pulp (PRC-APMP) and deink pulp (DIP) which is well thickness and green environment. That is optimizing pigment spreading formulation, optimizing pulp to materials ratio and its wet end chemical and copy making technique to reach the white value of all bleaching chemical pulp proportioning copy paper. The advantages of the products are: better printing adaptability, better relaxation thickness, better printing effect features compared with all chemical pulp hectograph paper. It's capable of producing top grade office and printing culture special pigment groom hectograph paper which is made according to different clients' requirement and selecting different optimized features' technique for different application such as laser printing, xerography and hectograph etc. So, it's capable of decreasing all chemical pulp quantity, saving wood, protecting forest, protecting environment from pollution.

A cleaning processing apparatus comprises a spin chuck for holding a wafer W, an under plate being positioned to face the back surface of the wafer W with a prescribed gap provided therebetween, a support member for supporting the under plate, and a nozzle hole formed to extended through the plate member and the support member. A chemical liquid, a pure water and a gas can be supplied into a nozzle hole through opening-closing valves, and the chemical liquid and the pure water remaining inside the nozzle hole can be sucked by a sucking device. A pure water remaining inside the nozzle hole is sucked and removed by using the sucking device after the processing of the wafer W with a pure water and, then, a gas is spurted onto the back surface of the wafer W.

This invention provides a photoresist coating liquid supplying apparatus and a photoresist coating liquid supplying method, for supplying a photoresist coating liquid having a low particle content to a photoresist coating apparatus, and a photoresist coating apparatus using such a photoresist coating liquid supplying apparatus, which can realize coating without causing significant defects in a cost-effective manner. The photoresist coating liquid supplying apparatus comprises a buffer vessel for a photoresist coating liquid, a circulation filtering apparatus for drawing a part of the coating liquid from the buffer vessel, filtering the coating liquid, and then returning the filtered coating liquid to the buffer vessel, and a pipe for supplying the coating liquid from the buffer vessel or the circulation apparatus to a coating apparatus. The photoresist coating liquid supplying method uses the photoresist coating liquid supplying apparatus. The photoresist coating apparatus comprises a combination of the coating liquid supplying apparatus with a slit coating apparatus.

The invention provides a high-quality rice fine processing process, which comprises the processing flow processes of primary magnetic separation, primary cleaning, metering, sieving, stone removing, secondary magnetic separation, husking, husked rice separation, tertiary magnetic separation, ultrasonic atomization tempering, rice milling, primary polishing, polished rice primary grading, spotted rice color separation, secondary color separation, fourth magnetic separation, secondary polishing, polished rice secondary grading and metering and packaging. According to the ultrasonic atomization tempering, an ultrasonic atomization humidification mode is used for humidifying the rice, the tempering time is 10 to 20 minutes, the tempering temperature is controlled to be between 30 DEG C and 40 DEG C, the unit humidification quantity is 0.5 to 5 percent, the actual seeping quantity is 2 to 3 percent, and the moisture content of the polished rice finally obtained through processing is not greater than 14 percent; tempering agents adopt ultrasonic atomization water; during the spotted rice color section, a photoelectric color separation device is used for automatically picking out different-color rice, the full-process temperature reduction is carried out in the whole processing flow process, and the temperature rice in the processing process is controlled not to exceed 5 DEG C. The high-quality rice fine processing process has the advantages that the high-quality rice can be subjected to integrated utilization and deep processing, and the final product quality is improved.

The invention discloses a four-step method for processing and recycling tin ore floatation wastewater, which comprises a new floatation technique, chemical treatment, physical treatment and biological treatment. The four-step method is characterized in that the principle of putting prevention first and providing prevention and control is adopted. The method is as follows: the new floatation technique and process are utilized to reduce the floatation wastewater and the microgranular particles from the headstream and reduce the usage amount of floatation reagents; because the chemical treatment method is used, the concentration of polyacrylamide in the tin ore floatation wastewater is increased from 0.5 percent to 0.9-1.1 percent, and the settling rate of part of the wastewater is improved; the physical treatment method is adopted to increase the settling distance and the settling time, the settling distance is extended for another 600 to 800m on the basis of 200m, and the settling time is increased for another 25 to 27 hours on the basis of 10 hours; aquatic organisms or plants, such as fish, frogs, aquatic weeds and the like are adopted to process the wastewater, the ecological reconstruction is realized, the agricultural irrigation standards are met, the utilization ratio of floatation return water is improved from 86 percent to above 97 percent, and peaceful and friendly coexistence of human and environment is realized.

The invention relates to the field of production methods of liquid milk, in particular to a method for producing liquid milk product containing grains, comprising the following steps of: (1) preparing grain solution, adding grains into a grain dosing tank, adding water, preparing the required concentration and then slowly stirring to evenly distributing the grains in the solution; (2) preparing a base material: mixing a stabilizing agent and/or an acidity regulating agent with milk, evenly stirring and homogenizing; (3) sterilizing grain liquid and the prepared grain liquid by using a tubular sterilizing machine; (4) filling: filling the sterilized grain liquid to a packaging unit and then filling the sterilized base material; and (5) overturning the packaging unit to evenly mixing the grains and the base material. By the method, dependent preparation, dependent sterilization and dependent filling of the base material and the grain liquid can be realized and the addition of the grains can be better controlled in the production process, thereby reducing the inevitable waste caused by errors in the production process.

The invention provides a method for reducing surface roughness of a heating plate subjected to shot blasting. The method comprises the steps of selecting a shot blasting medium, specifically, steel shots are selected as the shot blasting medium; optimizing the granularity of the steel shots, specifically, the total quantity of the steel shots with the granularity being 0.5 mm or above is smaller than 2%, and the total quantity of the steel shots with the granularity being 0.3-0.425 mm is about 90%; and controlling the stock bin granularity mixing ratio of the steel shots in the stock bin of ashot blaster, specifically, the steel shots with the granularity being 0.3 mm-0.355 mm account for 50% or above, and the steel shots with the granularity being 0.5 mm or above account for less than 5%. By means of the method for reducing surface roughness of the heating plate subjected to shot blasting, the problems that the surface of the heating plate is deeply polished, not ideal in shape, highin roughness and the like can be effectively solved, the maximum cleaning efficiency can be obtained, and the surface roughness of a cooling plate subjected to shot blasting can also be remarkably reduced.

The invention relates to a multistage sloping plate water treatment device which comprises a precipitating pool, a sloping plate group, a mud precipitating hopper, a mud discharge pipe, a water distributing device and a plurality of water collecting grooves, wherein the sloping plate group is arranged on the mud precipitating hopper of the precipitating pool; the water collecting grooves are arranged on the sloping plate group; the mud discharge pipe is arranged at the bottom of the mud precipitating hopper; the water distributing device is arranged on the side wall of the precipitating pool below the sloping plate group; and the sloping plate group comprises a plurality of sloping plates and a steel bar for fixing the sloping plates and is fixed between the left side wall and the right side wall of the precipitating pool by the steel bar. The multistage sloping plate water treatment device is characterized in that the sloping plates for forming the sloping plate group are one or more of long sloping plates, middle-length sloping plates and short sloping plates. The invention has the advantages of good discharge water effect and obvious reduction of particle content of discharge clear liquid; aiming at raw water of surface water, the treatment effect can reach 1NTU; and the surface load is about two times of that of conventional equipment and reaches more than 15m<3>/m<2>.

The invention relates to a mineral admixture for crack self-healing of a steam-cured cement-based material and preparation of the mineral admixture. The mineral admixture is prepared from the following components in percentage by weight: 35%-50% of an expanding mineral component, 40%-55% of a crystalline mineral component and 5%-10% of a calcium ion source mineral component. The mineral components are weighed in proportion and uniformly mixed, and the mineral admixture is prepared. The mineral admixture has the advantages that the self-healing effect is remarkable, the cost is low, the durability of the steam-cured cement-based material is effectively improved and the like.

The invention relates to a low-grade gold ore heap leaching method based on high voltage electropulse crushing. The method comprises the following steps: firstly, carrying out open circuit coarse crushing and closed circuit intermediate crushing on raw ores until appropriate particle size is reached, and then feeding the raw ores into a high voltage electropulse crushing machine to be treated; secondly, carrying out open circuit fine crushing on the raw ores by adopting the high voltage electropulse crushing machine, and carrying out combined classification on a product by adopting a wet type vibrating screen and classifying equipment; thirdly, feeding a finer overflow product into an all-slime cyanidation leaching system, mixing settled sand, coarse grain materials and appropriate amount of soda lime, then forming an ore heap, and carrying out heap leaching; and fourthly, obtaining golden liquid and tailings after leaching is finished, and adsorbing, desorbing and smelting the golden liquid, so that a gold product is obtained. Compared with the prior art, the method provided by the invention has the advantages that the high voltage electropulse crushing is adopted for treating low-grade gold ores, gold exposure rate of the product is high, fine particle content is low, heap leaching period can be obviously shortened, consumption of a leaching agent is reduced, and gold leaching rate is improved; and a fine-fraction graded product is also recycled while the heap leaching is carried out.

The invention relates to the technical field of transportation pump equipment, and discloses a stainless steel magnetic centrifugal pump which comprises a support. According to the stainless steel magnetic centrifugal pump, a separation flow channel communicates with gaps of wheel blades and obliquely extends upwards, water under the action of rotary centrifugation passes through the separation flow channel, solid-liquid separation can be conducted, solid particles are layered to the outer ring, liquid and scraping blades are matched to scrape layers and the liquid enter a water inlet channel, and under the action of reverse rotation blades, the liquid can overcome centrifugal force to enter a pump shaft and be conveyed to an inner cavity of an isolation sleeve, an inner magnetic rotor is cooled, the particle content is reduced, the service life of the isolation sleeve is prolonged, rotation failure caused by blockage is prevented, meanwhile, the liquid is injected from the pump shaft, tooth holes are formed in the left side of the support in a axial direction, the liquid entering the isolation sleeve is discharged from the tooth holes arranged in the circumferential direction, so that the pressure of the liquid entering the isolation sleeve is uniform, and the problems that the pressure of the liquid entering an existing structure is not uniform easily, axial force and radial force are exerted on the pump shaft, and damage is caused easily are solved.

The invention discloses aeolian sand cement stabilized graded broken stone. The aeolian sand cement stabilized graded broken stone comprises the following raw materials by mass percent: 4.2-5.2% of cement, 4.6-6.6% of water, and the balance of aeolian sand graded broken stone; the aeolian sand graded broken stone comprises the following raw materials by mass ratio, and the ratio of the aeolian sand to the stone chips to the broken stone is equal to (8-13):(17-26):(66-70). According to the aeolian sand cement stabilized graded broken stone, the capital input of the highway projects is relatively low, the cost of the raw materials for building the road is low, and the flexural-tensile strength and the crack resistant property of the cement stabilized graded broken stone are improved.