103results about How to "Improve grinding fineness" patented technology

The invention relates to a magnetite high-pressure roller mill-wet type preconcentration-stage grinding-tower mill magnetic separation technology. The magnetite high-pressure roller mill-wet type preconcentration-stage grinding-tower mill magnetic separation technology comprises rough breaking operation and intermediate breaking operation and is characterized in that products obtained by the intermediate breaking operation are subjected to the following operations in sequence: closed-loop high-pressure roller mill-sieving operation formed by a high-pressure roller mill and sieving equipment, wet type preconcentration magnetic separation operation, one-stage closed-loop ore grinding operation, second-stage closed-loop ore grinding operation formed by secondary cyclone grading and a second-stage tower mill and continuous three-stage magnetic separation operation, so that final concentrate with the grade being 67%-67.8% and the yield being 38%-41% and integrated tailings with the grade being 8.5%-9.5% and the yield being 62%-59% are obtained. The magnetite high-pressure roller mill-wet type preconcentration-stage grinding-tower mill magnetic separation technology has the advantages that a high-pressure roller mill is used for preconcentration, so that the size of particles fed into the mill is reduced, and the grade of crude ore and the fineness of grinding are improved; the second-stage closed-loop ore grinding operation formed by the cyclone and the tower mill is adopted; the fine screening-regrinding operation is omitted; the fifth-stage magnetic operation is reduced; the technology process is simplified; and the beneficiation cost is reduced.

The invention provides a cement grinding aid. The cement grinding aid comprises raw materials as follows: triethanolamine, polyether polyol, sodium hydroxide, sodium thiosulfate and a biochemical waste liquid, wherein the biochemical waste liquid is one of or a mixture of a waste liquid produced during production of industrial sodium gluconate and a waste liquid produced during production of an industrial itaconic acid product. The cement grinding aid can optimize the cement grain composition, activate the early strength of cement, improve the powder grinding efficiency of the cement and reduce energy consumption.

The invention provides a chlorine-free high-efficiency composite reinforcing type solid cement grinding aid and production method, the grinding aid is composed of inorganic substrate material, organic material and water, strong antifreeze and antirust; the inorganic substrate material is composed of powder coal ash, sodium carbonate and sodium silicate, the mixing solution of any three or four among triethanolamine, glycol, propanediol, glycerolor paper pulp waste liquid is selected as the organic material, the inorganic strong antifreeze is composed of aluminum sulfate, calces or sodium hydrogen, sodium acetate or carbamide, and the antirust is sodium dihydrogen phosphate. The production method is the following: first the inorganic strong antifreeze is utilized to perform the complexation and modification of the organic material solution, and then the obtained mixing solution and the inorganic substrate material are furthermore compounded, reacted, blended and crushed. The invention has simple process, low cost, wide application range, good anti-freezing anti-rusting functions, and can improve later strength of cement obviously without disadvantage influence, and also obviously reduce the using amount of cement clinker by 20 percent, thereby having outstanding economical benefit.

The invention relates to the technical fields of a transfer film and a printing ink formulation, and particularly relates to sun-proof printing ink as well as a preparation method and an application thereof in a sun-proof transfer film. The sun-proof printing ink is prepared from the following components in parts by mass: 18-20 parts of inorganic paint, 1-1.5 parts of a wetting agent, 45-50 parts of acrylic resin liquid, 12-18 parts of cellulose acetate resin liquid, 1-1.5 parts of a dispersing agent, 1-1.5 parts of fumed silica, 5-6 parts of isopropanol and 12-15 parts of n-propyl acetate. The inorganic paint and the wetting agent are mixed and ground, so as to obtain paint powder with high fineness; the printing ink is uniformly mixed. The sun-proof printing ink is applied to the sun-proof transfer film, has a sun-proof level up to an 8 level, and is particularly suitable for printing outdoor products.

The invention provides a preparation method of silver solder paste, which comprises the following steps: 1, preparing raw materials and pretreating the raw material; 2, stirring the raw materials; 3, roasting the raw materials; and 4 grinding the raw materials. The invention also provides silver solder paste prepared by the method. The silver solder paste is prepared from the following raw materials in percentage by weight: boric acid 33-38, potassium fluoborate 28-32, potassium fluoride 20-25, monomer boron 2.0-2.5 and distilled water 10-20. Compared with the prior art, the method has the advantages of stable product quality and high material utilization rate. The product has the characteristics of long soldering high-temperature life, long activity retention time, high solder wettability and high soldered joint quality.

The invention discloses a preparation method of a composite straw sheet. The method includes: increasing the content of sulphate aluminium cement clinker into common sulphate aluminium cement, adding hydraulic calcium oxide as an exciting agent, and conducting blending to form compound sulphoaluminate cement, and bonding the cement with crop straw to obtain the sheet. And the side effects of straw on cement setting and hardening can be overcome. In the method, the straw is not soaked by alkaline water, a chlorine-containing material is unnecessary for modification treatment on straw, wastewater discharge does not exist, heating is not needed, smoke dust and exhaust emission are absent. The advantages of light weight and abundant fiber of crop straw are utilized for low energy consumption and pollution-free preparation of the composite straw sheet.

The invention relates to the technical field of cement production, and particularly relates to a preparation process of a polyglycerol cement grinding aid. The polyglycerol cement grinding aid is prepared by mixing 90-95% of polyglycerol and 5-10% of inorganic reinforcer. The polymerization process of the polyglycerol comprises the following steps: adding 15-30% of recovered glycerol, 1-3% of NaOH and 69-84% of kerosene into a reactor, heating to 120-180 DEG C under the condition of introducing N2 for protection, and reacting for 4-8 hours while keeping the temperature, wherein the average polymerization degree n is calculated by determining the refractive index of the reactant, and the average polymerization degree n of the polyglycerol is controlled to be 3-5. According to the invention, the prepared cement grinding aid can change the dispersity of a material in a mill, effectively eliminate electrostatic adsorption and mill bonding phenomena of fine cement particles and optimize the gradation of the cement particles under the condition of not changing the status of the cement grinding mill. The original yield of the grinding mill is kept unchanged, the cement grinding rate and specific area are increased, the 3d strength of the cement is increased by 15%, and the 28d strength is increased by more than 8%. Alternatively, the existing cement grinding rate and specific area are kept, and the yield of the cement grinding mill can be increased by more than 10%.

The invention discloses a regular dodecahedron-shaped grinding body of a ball grinder. The outer surface of the grinding body is a sealed regular dodecahedron including 12 regular pentagons; and the seamed edges of each regular pentagon are superposed with seamed edges of five regular pentagons adjacent to the regular pentagon, and are 10 mm. The grinding body related to the invention is a regular dodecahedron-shaped spherical grinding body. When two grinding bodies conduct grinding, comprehensive contact friction between points, lines and surfaces can be generated, so as to improve the yield and the grinding fineness of the ball grinder, and further improve the grinding efficiency. Moreover, the area-weight ratio of the grinding body is high, so as to improve economic benefits, and reduce mineral resource consumption.

The invention discloses a polisher capable of adjusting the polishing height of lipping of rail head, and belongs to the technical field of railway maintenance equipment. The polisher comprises a rack. The polisher is characterized by further comprising a vertically moving device and a travelling device; the vertically moving device comprises a hanging bracket, ball bearing bases, ball screws and ball nuts, stepper motors and vertically sliding blocks are arranged on the rack, and the hanging bracket is connected with the rack in a sliding mode through the vertically sliding blocks; the travelling device comprises a driving gear, a driven gear, a travelling wheel, a rolling wheel and a motor, wherein the driving gear is connected with the motor shaft of the motor, the driven gear is driven by the driving gear through gear meshing, and the travelling wheel is connected with the driven gear. According to the polisher capable of adjusting the polishing height of the lipping of the rail head, when polishing is conducted on the lipping of the rail head, the polisher can uniformly move at a low speed, and a grinding wheel is driven to automatically feed in the vertical direction, so that polishing in the vertical direction is conducted on the lipping of the rail head, and the polishing speed is uniform; moreover, the grinding wheel can vertically move, and polishing is conducted on any position of the height of the lipping of the rail head, so that the overall effect of polishing of the lipping of the rail head is improved.

The invention discloses a biopharmaceutical grinding device with multi-layer separation and purification functions. The biopharmaceutical grinding device comprises an outer shell, a limiting ring anda motor, a supporting base is connected to the outer side of the lower end of the outer shell in a welded mode, an inner shell is arranged on the inner side of the outer shell, the limiting ring is fixedly installed on the outer side of the lower portion of the inner shell and is located on the inner side of a limiting groove, and the limiting groove is formed in the inner side of the outer shell.According to the biopharmaceutical grinding device with the multi-layer separation and purification functions, an outer grinding roller, an inner grinding roller and a middle grinding roller correspond to a third grinding groove, a second grinding groove and a first grinding groove in position one to one, and the wall thicknesses of the outer grinding roller, the inner grinding roller and the middle grinding roller are sequentially reduced; medicine is sequentially filtered into the second grinding groove and the third grinding groove from the first grinding groove through centrifugal force,the medicine can be subjected to multi-stage grinding through cooperation of the outer grinding roller and the inner grinding roller, and the grinding fineness of the medicine is improved.

The invention relates to the technical field of ceramic production, and discloses a ceramic production waste recovery device. The device solves the problems of incomplete crushing of ceramic waste and larger labor input, and comprises a recovery box body and a recovery box cover, the recovery box cover is mounted at the top end of the recovery box body, and a feed inlet is formed in the middle of the top end of the recovery box cover. A discharging box is arranged in the recovery box body, supporting columns located at the bottom end in the recovery box body are arranged at the periphery of the bottom end of the discharging box, and a discharging pipe penetrating through the side wall of the recovery box body and extending to the outside of the recovery box body is arranged at one side of the discharging box; and by arranging a smashing box, a rotating shaft, a smashing roller, a second motor and a second gear, smashing operation on ceramic waste chips is conveniently achieved, meanwhile, through the action of a grinding plate, a grinding base, a first motor, a first belt wheel, a conveyor and a first gear, secondary smashing on the waste chips is facilitated, manual smashing can be avoided, and then the smashing efficiency is effectively improved.

The invention relates to a ceramic grinding device for manufacturing Lei Cha (specialty food). The ceramic grinding device comprises a grinding bar which comprises a handheld part and a grinding partwhich are connected, a grinding face is arranged at the front end of the grinding part and comprises a grinding side face and a grinding bottom face which are connected, a plurality of grinding grooves are formed in the grinding face, grinding balls are arranged in the grinding grooves, the grinding balls cannot penetrate out of groove openings of the grinding grooves, and each grinding groove comprises a grinding section arranged at the top of the grinding groove, a feeding section and a discharging section, wherein the feeding section and the discharging section are arranged on the two sidesof the corresponding groove opening. The grinding device has the beneficial effects of being simple in structure and convenient to use; in addition, the grinding grooves are additionally arranged, the requirements are improved, and therefore the grinding efficiency, the grinding fineness and the grinding uniformity can be obviously improved; and the grinding bar made of a ceramic material is small in abrasion, and the grinding capacity is higher.

The invention discloses a food waste disposer and a grinding mechanism thereof. The grinding mechanism comprises grinding combination units formed by grinding discs and grinding rings. The two or more grinding combination units are arranged in the direction from an inlet of the grinding mechanism to an outlet of the grinding mechanism. The sizes of grinding clearances of the multiple grinding combination units are sequentially decreased in the direction from the inlet to the outlet. The sizes of the grinding clearances are equal to the sizes of clearances between the grinding discs and the grinding rings. According to the grinding mechanism, it is ensured that fibers and other structures in food waste are fully cut and ground, the grinding fineness of the ground food waste is effectively improved, and the problem that fibrous matter is wound around a motor shaft or blocks a discharging opening and a sewer is avoided.

The invention discloses a high-activity ore slag powder and a preparation technology thereof, and relates to the technical field of concrete, which can solve the technical problem of lower activity index of ore slag powder. The high-activity ore slag powder is technically characterized by being prepared from the following components in parts by weight: 100 parts of ore slag, 0.1 to 0.5 part of anhydrous sodium sulphate, 0.1 to 0.5 part of potassium sulfate, 0.2 to 0.4 part of slaked lime, and 0.015 to 0.02 part of a grinding additive. The high-activity ore slag powder has the advantages that the activity index is high, and the specific surface area is large.

The invention discloses a preparation method of a zinc oxidizing pressure leaching raw material and a two-section vertical stirring grinder series-connection open-circuit ore grinding system. The method comprises the steps that a to-be-ground zinc concentrate material is firstly pulpified to obtain ore pulp with a certain concentration; the ore pulp obtained after pulpifying enters a primary-section vertical stirring grinder to be roughly ground; a material with the high ore grinding fineness and with the ore pulp concentration keeping unchanged is obtained after rough grinding; the material obtained after rough grinding enters a secondary-section vertical stirring grinder again to be finely ground; and a material with the higher ore grinding fineness and with the ore pulp concentration keeping unchanged is obtained after fine grinding, that is, the stable zinc oxidizing pressure leaching raw material is obtained. The system comprises a pulpifying device, the primary-section vertical stirring grinder and the secondary-section vertical stirring grinder. An output opening of the pulpifying device is connected with a feeding opening of the primary-section vertical stirring grinder, and a discharging opening of the primary-section vertical stirring grinder is connected with a feeding opening of the secondary-section vertical stirring grinder. The method and the system have the beneficial effects of being low in investment, low in cost, short in process, low in operating cost, stable and reliable in work and good in fine grinding effect.

The invention relates to a multi-element recovery method of gold tailings waste residue. The gold tailings waste residue is extracted by a vibrating screen to extract stones, garbage, etc., and then enters the main silo, and then enters a ball mill by a belt conveyor for grinding, and then goes through a mixing tank for each Add 24-26 grams of xanthate to tailings waste residue per ton, and 19-20 grams of flotation oil. After fully stirring, enter the flotation machine for flotation. The selected product is sulfur concentrate, and the tailings are discharged by sweeping. The ore pump enters the cyclone, and the bottom flow returns to the ball mill for regrinding. After the overflow enters the spiral chute, the enriched tailings enter the ball mill and flotation machine for regrinding and re-selection, so that the gold content in the tailings is significantly reduced, and then the spiral chute The iron ore concentrate is extracted from the tailings by three-stage magnetic separation. The beneficial effect of the invention is that: the tailings grinding fineness is improved by adopting the technology provided by the invention, the recovery rate is increased from the original 58% to 84%, and the grade of gold in the tailings is significantly reduced after treatment.

The invention discloses making production equipment for high-quality wood paint. The making production equipment of the high-quality wood paint comprises a circulation grinding mechanism, a material storage mechanism and a stirring and filling mechanism; a discharging port of the circulation grinding mechanism is connected with a feeding port of the material storage mechanism; a discharging port of the material storage mechanism is connected with a feeding port of the stirring and filling mechanism; the stirring and filling mechanism comprises a stirring tank; a stirring shaft is arranged in the center of the stirring tank; the top of the stirring shaft is connected with an output shaft of a stirring motor; a plurality of stirring blades are arranged on the stirring shaft; multiple groups of spraying and blowing heads are arranged on the inner wall of the stirring tank; each group of spraying and blowing heads comprises a plurality of spraying and blowing heads which are arranged uniformly in an annular array form; and the spraying and blowing heads are connected with an air pump outside the stirring tank. The making production equipment for the high-quality wood paint can greatly increase the grinding fineness of powder by utilizing an airflow disturbance principle and cooperating with a grinding disk with a special structure; and the multiple groups of spraying and blowing heads on the inner wall of the stirring tank can greatly increase the uniform degree of mixing by utilizing the airflow disturbance principle, so the product quality is improved and the making production equipment for the high-quality wood paint is worthy of being promoted vigorously.

The invention discloses a water-based ink grinding and mixing device with a proportion regulation and control function and an implementation mode thereof, belongs to the technical field of water-based ink, and aims to solve the problems that the control strength of the ink material proportion depends on the accuracy of material metering, an existing grinding machine is poor in applicability to blending a small amount of water-based ink, ground materials are difficult to quickly and uniformly distribute, and the working efficiency is low. And the utilization rate of the grinding machine is not high when a small amount of ink is ground. When the extrusion block is close to the center of the turntable, the diameter of the circular motion route of the extrusion block is reduced, and the pressing height of the piston disc is reduced; when the extrusion block is far away from the center of the turntable, the diameter of the circular motion route of the extrusion block is increased, and the pressing height of the piston disc is increased; three groups of materials are ground and mixed through grinding connection of the grinding tooth surface and the grinding concave-convex surface, the grinding tooth surface is attached to the grinding concave-convex surface, the materials slowly enter the grinding cavity along the lower opening of the discharging through pipe, and the materials are tightly attached to the grinding mechanism, so that various materials can be quickly and uniformly distributed.