CN112387370B - Grinding process capable of improving strength of phosphogypsum ceramsite lightweight aggregate - Google Patents
Grinding process capable of improving strength of phosphogypsum ceramsite lightweight aggregate Download PDFInfo
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- CN112387370B CN112387370B CN202011153852.6A CN202011153852A CN112387370B CN 112387370 B CN112387370 B CN 112387370B CN 202011153852 A CN202011153852 A CN 202011153852A CN 112387370 B CN112387370 B CN 112387370B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/10—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with one or a few disintegrating members arranged in the container
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/183—Feeding or discharging devices
- B02C17/1835—Discharging devices combined with sorting or separating of material
- B02C17/1855—Discharging devices combined with sorting or separating of material with separator defining termination of crushing zone, e.g. screen denying egress of oversize material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/183—Feeding or discharging devices
- B02C17/186—Adding fluid, other than for crushing by fluid energy
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/20—Disintegrating members
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/24—Driving mechanisms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C25/00—Control arrangements specially adapted for crushing or disintegrating
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/14—Anti-slip materials; Abrasives
- C09K3/1409—Abrasive particles per se
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Abstract
The invention provides a grinding process capable of improving the strength of phosphogypsum ceramsite lightweight aggregate, which comprises the following steps: the first step is as follows: adding phosphogypsum ceramsite accounting for 30-70% of the volume of the ball mill into the ball mill, then continuously adding grinding balls accounting for 10-35% of the volume of the added phosphogypsum ceramsite and grinding agents accounting for 10-20% of the volume of the added phosphogypsum ceramsite into the ball mill, and starting the ball mill to perform ball milling at 15-25 r/min and 20-60 min; the second step is that: taking out the materials in the ball mill, filtering, collecting the filtered oversize products, and carrying out three-stage screening, wherein the middle layer is high-strength phosphogypsum ceramsite lightweight aggregate. The method can improve the barrel pressure strength of the product, reduce the use of chemical agents, recycle the used auxiliary materials, and reduce the processing cost, the recovery rate of the consumable materials used in the grinding process provided by the application is more than 90%, the process is environment-friendly and pollution-free, the production cost of building material enterprises can be effectively reduced, the economic benefit is improved, and the obtained product has good market application prospect.
Description
Technical Field
The invention relates to the technical field of phosphogypsum ceramsite processing technologies, in particular to a grinding technology capable of improving the strength of a phosphogypsum ceramsite lightweight aggregate.
Background
Along with the development requirements of emerging industries of national strategies, the nation strongly promotes the comprehensive utilization of a large amount of solid wastes and tailings, and promotes the comprehensive utilization of industrial wastes such as metallurgical slag, chemical slag, red mud, phosphogypsum and the like. The comprehensive utilization of phosphogypsum is available in many ways, and the production of novel building materials is one of the most effective ways.
In order to consume a large amount of phosphogypsum, more and more building material enterprises use the phosphogypsum to produce high-content non-fired gypsum ceramsite to manufacture light and high-strength concrete, and are used in engineering structures and building engineering with certain limit on self weight, such as high-rise building floors, highway bridge floors, roofs and the like. It can also be used in plain areas lacking stone as aggregate for preparing concrete and producing gypsum ceramsite products, etc. The gypsum ceramsite product and the hollow building block thereof have the advantages of light volume weight, good heat insulation effect, convenient construction, no hollowing of plastering, no falling and the like, so that the economic and social benefits are more remarkable.
The phosphogypsum ceramsite light aggregate is prepared by taking phosphogypsum as a main material, taking cement clinker and steel slag as alkaline excitants and mineral powder as active materials through the processes of modification, granulation, maintenance, crushing, screening and the like, can be widely used in highway roadbed materials, C40 and lower-grade concrete, cement concrete blocks and other products, can greatly consume phosphogypsum inventory, changes waste into valuables, and has extremely important significance for saving resources, realizing resource optimization configuration and sustainable development.
Patent CN106431101A discloses a preparation method of a phosphogypsum non-fired ceramsite light aggregate, which improves the structural performance of the light aggregate by adding a certain proportion of substances such as phosphorus slag powder, calcium oxide, cement and the like, and the cylinder pressure strength can reach 4.5MPa although the non-firing and ball-milling-free process is realized. Patent CN101445355B discloses a building material produced by using industrial waste residues, which is formed by stirring and pouring materials such as phosphogypsum, lime, cement, water glass, a water reducing agent, a slow release agent, an early strength agent, water and the like, and the strength of the produced light wallboard is up to more than 3.5MPa by adding low-alkali grid glass fiber cloth.
The above patents show that when the phosphogypsum is used for producing ceramsite products or building materials, various chemical agents are required to be added to improve the strength of the phosphogypsum, and some of the phosphogypsum even needs to be additionally added with glass fibers to improve the structural performance of the materials, so that the production cost is undoubtedly increased, and the additive components and types are complex and various, so that the product quality is unstable and is not easy to control, and the method is not beneficial to industrial production.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a grinding process capable of improving the strength of the phosphogypsum ceramsite lightweight aggregate, and provides a grinding process which mainly uses physical grinding and reduces the use of chemical agents.
According to the embodiment of the invention, the grinding process capable of improving the strength of the phosphogypsum ceramsite lightweight aggregate comprises the following steps:
the first step is as follows: adding phosphogypsum ceramsite accounting for 30-70% of the volume of the ball mill into the ball mill, then continuously adding grinding balls accounting for 10-35% of the volume of the added phosphogypsum ceramsite and grinding agents accounting for 10-20% of the volume of the added phosphogypsum ceramsite into the ball mill, and starting the ball mill to perform ball milling at 15-25 r/min and 20-60 min;
the second step is that: taking out the materials in the ball mill, filtering, collecting the filtered oversize products, and carrying out three-stage screening, wherein the middle layer is high-strength phosphogypsum ceramsite lightweight aggregate.
Further, the grinding aid comprises 5-15 parts by weight of grinding aid and 100 parts by weight of water, wherein the grinding aid comprises one of quartz sand, silica, barite particles and calcite particles, and the particle size of the grinding aid is smaller than that of the phosphogypsum ceramsite and larger than the pore size of a filter material used for filtering.
Furthermore, in the second step, the upper layer is the grinding ball, the lower layer is the grinding aid, and both the grinding ball and the grinding aid can be recycled.
Further, the abrasive also comprises a pH regulator, and the pH of the abrasive is 10.5-11.5 after the pH regulator is added.
Further, the pH regulator comprises one or more of aluminum hydroxide, magnesium hydroxide, calcium hydroxide, sodium hydroxide and quicklime powder.
Further, the grinding balls comprise one of agate, ceramic, steel, corundum and zircon, and the particle size of the grinding balls is 1.2-2.5 times that of the phosphogypsum ceramsite.
Further, the initial cylinder pressure strength of the phosphogypsum ceramsite is 3-5 Mpa, and the cylinder pressure strength can be improved to 8.5-12.5 Mpa after processing.
Compared with the prior art, the invention has the following beneficial effects:
after the conventionally maintained phosphogypsum ceramsite is polished by the process, the barrel pressure strength of the phosphogypsum ceramsite is further improved, so that the phosphogypsum ceramsite can replace the traditional crushed stone to serve as aggregate, the structural performance of building materials is met, the utilization rate of the phosphogypsum is increased, and the method conforms to the policy of national advocates for strengthening the protection and restoration of ecological systems and promoting the construction of ecological civilization;
the phosphogypsum ceramsite is subjected to wet grinding, a carbonization layer formed on the surface of the phosphogypsum ceramsite lightweight aggregate at the early stage can be removed, the contact surface between the phosphogypsum ceramsite lightweight aggregate and gases such as carbon dioxide in the air is reduced by reducing the specific surface area, the carbonization reaction can be greatly relieved, a compact anti-carbonization coating is added on the surface of the phosphogypsum ceramsite lightweight aggregate by adding a pH regulator, the later-stage strength attenuation of the phosphogypsum ceramsite lightweight aggregate is effectively relieved, the service life is prolonged, and the later-stage cylinder pressure strength of the phosphogypsum ceramsite lightweight aggregate can be directly improved. It is worth emphasizing that the alkaline coating provides an alkaline auxiliary environment for the generation of C-S-H gel in the process of manufacturing concrete by the phosphogypsum ceramsite lightweight aggregate, and is more beneficial to enhancing the compactness of the concrete;
the process reduces the use of chemical agents, the used auxiliary materials can be recycled, the processing cost can be reduced, the recovery rate of consumable materials used in the grinding process reaches over 90%, the process is environment-friendly and pollution-free, the production cost of building material enterprises can be effectively reduced, the economic benefit is improved, and the obtained product has good market application prospect.
Detailed Description
The technical solution of the present invention is further illustrated by the following examples.
Example 1
The embodiment provides a grinding process capable of improving the strength of phosphogypsum ceramsite lightweight aggregate, which comprises the following steps:
the first step is as follows: adding the cured phosphogypsum ceramsite with the cylinder pressure strength of 3Mpa into a ball mill, wherein the volume of the added phosphogypsum ceramsite accounts for 30% of the volume of the ball mill, then adding zircon grinding balls, wherein the volume of the added grinding balls accounts for 10% of the volume of the phosphogypsum ceramsite, and the average diameter of the grinding balls is 2.5 times of the average particle size of the phosphogypsum ceramsite;
the second step is that: weighing 100kg of water, adding 5kg of quartz sand, wherein the diameter of the quartz sand is smaller than the average particle diameter of the phosphogypsum ceramsite lightweight aggregate and larger than the pore diameter of the filter cloth; then adding calcium hydroxide to make the pH value of the solution be 10.5, and uniformly stirring to obtain an abrasive for later use;
the third step: uniformly stirring a grinding agent accounting for 10% of the volume of the phosphogypsum ceramsite added in the first step, adding the mixture into a ball mill, controlling the rotating speed of the ball mill at 25r/min, and taking out the mixture after ball milling for 20 min;
the fourth step: filtering the ball-milled materials, feeding the filtrate and washing filter residue water into a natural sedimentation tank, and taking supernatant liquor after sedimentation for recycling to prepare an abrasive; carrying out three-stage screening on the filter residue, taking out the uppermost layer, and recovering the grinding balls; taking out the lowest layer, and recovering the quartz sand for use in next preparation of the grinding agent; taking out the middle layer as the final polished phosphogypsum ceramsite lightweight aggregate;
the fifth step: and (3) drying the high-strength phosphogypsum ceramsite lightweight aggregate obtained in the step (a), and measuring the cylinder pressure strength, the softening coefficient and the water absorption rate.
Example 2
The embodiment provides a grinding process capable of improving the strength of phosphogypsum ceramsite lightweight aggregate, which comprises the following steps:
the first step is as follows: adding the cured phosphogypsum ceramsite with the cylinder pressure strength of 3.5Mpa into a ball mill, wherein the volume of the added phosphogypsum ceramsite accounts for 40% of the volume of the ball mill, then adding a ceramic grinding ball, wherein the volume of the added grinding ball accounts for 20% of the volume of the phosphogypsum ceramsite, and the average diameter of the grinding ball is 1.5 times of the average particle size of the phosphogypsum ceramsite;
the second step is that: weighing 100kg of water, and adding 10kg of silica, wherein the particle size of the silica is smaller than the average particle size of the phosphogypsum ceramsite lightweight aggregate and larger than the pore size of the filter cloth; adding quicklime powder to make the pH of the solution be 11, and uniformly stirring to obtain an abrasive for later use;
the third step: uniformly stirring the grinding agent accounting for 12% of the volume of the phosphogypsum ceramsite added in the first step, adding the mixture into a ball mill, controlling the rotating speed of the ball mill at 20r/min, and taking out the mixture after ball milling for 40 min;
the fourth step: filtering the ball-milled materials, feeding the filtrate and washing filter residue water into a natural sedimentation tank, and taking supernatant liquor after sedimentation for recycling to prepare an abrasive; carrying out three-stage screening on the filter residue, taking out the uppermost layer, and recovering the grinding balls; taking out the lowest layer, and recovering silica for use in next grinding agent preparation; taking out the middle layer as the final polished phosphogypsum ceramsite lightweight aggregate;
the fifth step: and (3) drying the high-strength phosphogypsum ceramsite lightweight aggregate obtained in the step (a), and measuring the cylinder pressure strength, the softening coefficient and the water absorption rate.
Example 3
The embodiment provides a grinding process capable of improving the strength of phosphogypsum ceramsite lightweight aggregate, which comprises the following steps:
the first step is as follows: adding the cured phosphogypsum ceramsite with the cylinder pressure strength of 4Mpa into a ball mill, wherein the volume of the added phosphogypsum ceramsite accounts for 50% of the volume of the ball mill, then adding agate grinding balls, wherein the volume of the added grinding balls accounts for 15% of the volume of the phosphogypsum ceramsite, and the average diameter of the grinding balls is 1.8 times of the average particle size of the phosphogypsum ceramsite;
the second step is that: weighing 100kg of water, and adding 10kg of barite particles, wherein the particle size of the barite particles is smaller than the average particle size of the phosphogypsum ceramsite lightweight aggregate and larger than the pore size of filter cloth; then adding a mixture prepared from magnesium hydroxide, aluminum hydroxide and calcium hydroxide according to the mass ratio of 1:1:1, enabling the pH of the solution to be 11.5, and uniformly stirring to obtain a grinding agent for later use;
the third step: uniformly stirring a grinding agent accounting for 15% of the volume of the phosphogypsum ceramsite added in the first step, adding the mixture into a ball mill, controlling the rotating speed of the ball mill at 15r/min, and taking out the mixture after ball milling for 60 min;
the fourth step: filtering the ball-milled materials, feeding the filtrate and washing filter residue water into a natural sedimentation tank, and taking supernatant liquor after sedimentation for recycling to prepare an abrasive; carrying out three-stage screening on the filter residue, taking out the uppermost layer, and recovering the grinding balls; taking out the lowest layer, and recovering barite particles for use in next grinding agent preparation; taking out the middle layer as the final polished phosphogypsum ceramsite lightweight aggregate;
the fifth step: and (3) drying the high-strength phosphogypsum ceramsite lightweight aggregate obtained in the step (a), and measuring the cylinder pressure strength, the softening coefficient and the water absorption rate.
Example 4
The embodiment provides a grinding process capable of improving the strength of phosphogypsum ceramsite lightweight aggregate, which comprises the following steps:
the first step is as follows: adding the cured phosphogypsum ceramsite with the cylinder pressure strength of 4.5Mpa into a ball mill, wherein the volume of the added phosphogypsum ceramsite accounts for 60 percent of the volume of the ball mill, then adding corundum grinding balls, wherein the volume of the added grinding balls accounts for 25 percent of the volume of the phosphogypsum ceramsite, and the average diameter of the grinding balls is 1.2 times of the average particle size of the phosphogypsum ceramsite;
the second step is that: weighing 100kg of water, and adding 15kg of calcite particles, wherein the particle size of the calcite particles is smaller than the average particle size of the phosphogypsum ceramsite lightweight aggregate and larger than the pore size of the filter cloth; then adding a mixture prepared by magnesium hydroxide and calcium hydroxide according to the mass ratio of 1:1, enabling the pH of the solution to be 11, and uniformly stirring to obtain a grinding agent for later use;
the third step: uniformly stirring a grinding agent accounting for 18% of the volume of the phosphogypsum ceramsite added in the first step, adding the mixture into a ball mill, controlling the rotating speed of the ball mill at 20r/min, and taking out the mixture after ball milling for 30 min;
the fourth step: filtering the ball-milled materials, feeding the filtrate and washing filter residue water into a natural sedimentation tank, and taking supernatant liquor after sedimentation for recycling to prepare an abrasive; carrying out three-stage screening on the filter residue, taking out the uppermost layer, and recovering the grinding balls; taking out the lowest layer, recovering calcite particles, and reserving the calcite particles for use in next preparation of the grinding agent; taking out the middle layer as the final polished phosphogypsum ceramsite lightweight aggregate;
the fifth step: and (3) drying the high-strength phosphogypsum ceramsite lightweight aggregate obtained in the step (a), and measuring the cylinder pressure strength, the softening coefficient and the water absorption rate.
Example 5
The embodiment provides a grinding process capable of improving the strength of phosphogypsum ceramsite lightweight aggregate, which comprises the following steps:
the first step is as follows: adding the cured phosphogypsum ceramsite with the cylinder pressure strength of 5Mpa into a ball mill, wherein the volume of the added phosphogypsum ceramsite accounts for 70 percent of the volume of the ball mill, then adding steel grinding balls, wherein the volume of the added grinding balls accounts for 10 percent of the volume of the phosphogypsum ceramsite, and the average diameter of the grinding balls is 2 times of the average particle size of the phosphogypsum ceramsite;
the second step is that: weighing 100kg of water, and adding 10kg of silica, wherein the particle size of the silica is smaller than the average particle size of the phosphogypsum ceramsite lightweight aggregate and larger than the pore size of the filter cloth; then adding a mixture prepared from aluminum hydroxide and calcium hydroxide according to the mass ratio of 1:3, enabling the pH of the solution to be 11, and uniformly stirring to obtain a grinding agent for later use;
the third step: uniformly stirring the grinding agent accounting for 20% of the volume of the phosphogypsum ceramsite added in the first step, adding the mixture into a ball mill, controlling the rotating speed of the ball mill at 25r/min, and taking out the mixture after ball milling for 25 min;
the fourth step: filtering the ball-milled materials, feeding the filtrate and washing filter residue water into a natural sedimentation tank, and taking supernatant liquor after sedimentation for recycling to prepare an abrasive; carrying out three-stage screening on the filter residue, taking out the uppermost layer, and recovering the grinding balls; taking out the lowest layer, and recovering silica for use in next grinding agent preparation; taking out the middle layer as the final polished phosphogypsum ceramsite lightweight aggregate;
the fifth step: and (3) drying the high-strength phosphogypsum ceramsite lightweight aggregate obtained in the step (a), and measuring the cylinder pressure strength, the softening coefficient and the water absorption rate.
Comparative example
Drying the phosphogypsum ceramsite maintained for a specified time, directly measuring the cylinder pressure strength, the softening coefficient and the water absorption, and comparing with the examples 1-5; the results of measuring the cylinder pressure strength, the softening coefficient and the water absorption of examples 1 to 5 and comparative example are shown in Table 1.
TABLE 1 results of measurement of barrel pressure strength, softening coefficient and water absorption of examples 1 to 5 of the present invention and comparative examples
| Test specimen | Initial barrel pressure Strength (MPa) | Barrel pressure intensity (Mpa) | Coefficient of softening | Water absorption rate |
| Example 1 | 3 | 9 | 0.84 | 8.8％ |
| Example 2 | 3.5 | 9.7 | 0.79 | 9.7％ |
| Example 3 | 4 | 8.5 | 0.8 | 10.1％ |
| Example 4 | 4.5 | 12.5 | 0.82 | 9.0％ |
| Example 5 | 5 | 11.6 | 0.81 | 10％ |
| Comparative example | 4.5 | 6.2 | 0.68 | 11.6％ |
Note: the phosphogypsum ceramsite in the initial state used in the examples 1-5 is the phosphogypsum ceramsite cured for the specified time, and is not dried, and the curing time in the examples 1-5 and the comparative example is 48 hours.
The data in the table show that the cylinder pressure strength of the phosphogypsum ceramsite treated in the examples 1-5 is greatly improved, the improvement amplitude is larger than that of the comparative example (the maximum amplitude reaches 200%, and the amplitude of the comparative example is 37.8%), the softening coefficient is larger than that of the comparative example, and the water absorption is smaller than that of the comparative example.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (5)
1. A grinding process capable of improving the strength of phosphogypsum ceramsite lightweight aggregate is characterized by comprising the following steps:
the first step is as follows: adding phosphogypsum ceramsite accounting for 30-70% of the volume of the ball mill into the ball mill, then continuously adding grinding balls accounting for 10-35% of the volume of the added phosphogypsum ceramsite and grinding agents accounting for 10-20% of the volume of the added phosphogypsum ceramsite into the ball mill, starting the ball mill to carry out wet grinding at 15-25 r/min for 20-60 min so as to remove a carbonization layer formed on the surface of the phosphogypsum ceramsite light aggregate;
the second step is that: taking out the materials in the ball mill, filtering, collecting the filtered oversize products, and carrying out three-stage screening, wherein the middle layer is high-strength phosphogypsum ceramsite lightweight aggregate; the grinding agent also comprises a pH regulator, the pH of the grinding agent is 10.5-11.5 after the pH regulator is added, and the pH regulator increases a compact anti-carbonization coating on the surface of the phosphogypsum ceramsite lightweight aggregate so as to improve the cylinder pressure strength of the phosphogypsum ceramsite lightweight aggregate;
the grinding aid comprises 5-15 parts by weight of grinding aid and 100 parts by weight of water, wherein the grinding aid comprises one of quartz sand, silica, barite particles and calcite particles, and the particle size of the grinding aid is smaller than that of the phosphogypsum ceramsite and larger than the pore size of a filter material used for filtering.
2. The grinding process capable of improving the strength of the phosphogypsum ceramsite light aggregate according to claim 1, wherein the pH regulator comprises one or more of aluminum hydroxide, magnesium hydroxide, calcium hydroxide, sodium hydroxide and quicklime powder.
3. The grinding process capable of improving the strength of the phosphogypsum ceramsite lightweight aggregate according to claim 1, wherein the grinding balls comprise one of agate, ceramic, steel, corundum and zircon, and the particle size of the grinding balls is 1.2-2.5 times of that of the phosphogypsum ceramsite.
4. The grinding process capable of improving the strength of the phosphogypsum ceramsite light aggregate according to claim 1, wherein the initial cylinder pressure strength of the phosphogypsum ceramsite is 3-4.5 Mpa.
5. The grinding process capable of improving the strength of the phosphogypsum ceramsite lightweight aggregate according to claim 1, wherein in the second step, the upper layer is grinding balls, and the lower layer is grinding aid.
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| CN101913874A (en) * | 2010-08-03 | 2010-12-15 | 清华大学 | Method for pretreating ceramic aggregates of porous ceramic filtering pipe support for high-temperature dust removal |
| CN102910897A (en) * | 2012-10-17 | 2013-02-06 | 宜兴市腾飞陶粒制造有限公司 | Medium density propping agent used in waste ceramsite recycling production and preparation method thereof |
| CN105705897A (en) * | 2013-10-23 | 2016-06-22 | Lsa有限责任公司 | A method and a system for producing a lightweight ceramic aggregate, particularly from coal ash |
| CN106116496A (en) * | 2016-06-28 | 2016-11-16 | 平凉华晨非金属应用科技有限公司 | Phosphogypsum light through hole haydite |
| CN208642835U (en) * | 2018-06-22 | 2019-03-26 | 铜川秦瀚陶粒有限责任公司 | A kind of new ball mill producing ceramsite propping agent |
| CN109320119A (en) * | 2018-11-06 | 2019-02-12 | 西安建筑科技大学 | A kind of building discarded concrete high quality recycled aggregates reclaimer |
| CN110511306A (en) * | 2019-09-04 | 2019-11-29 | 西南石油大学 | A kind of production method of the super-low-density proppant based on supramolecular materials |
| CN110451864A (en) * | 2019-09-18 | 2019-11-15 | 湖北昌耀新材料股份有限公司 | Ardealite baking-free ceramicite light-weight aggregate and preparation method thereof |
| CN110898960A (en) * | 2019-11-20 | 2020-03-24 | 华侨大学 | System for preparing high-quality recycled aggregate based on throwing and spraying pill crushing waste concrete |
| CN111116075A (en) * | 2020-01-06 | 2020-05-08 | 深圳市华威环保建材有限公司 | Aggregate surface strengthening method and equipment |
| CN111604126A (en) * | 2020-05-23 | 2020-09-01 | 陕西宏基混凝土构件有限责任公司 | Recycled concrete production system |
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| CN112387370A (en) | 2021-02-23 |
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Denomination of invention: A polishing process that can improve the strength of phosphogypsum ceramsite lightweight aggregate Effective date of registration: 20230927 Granted publication date: 20220218 Pledgee: Hubei Three Gorges rural commercial bank Limited by Share Ltd. Pledgor: HUBEI CHANG YAOXIN MATERIALS LIMITED BY SHARE Ltd. Registration number: Y2023980059557 |