KR20130009000A - Coal gangue ceramsite and its preparation approach - Google Patents
Coal gangue ceramsite and its preparation approach Download PDFInfo
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- KR20130009000A KR20130009000A KR20110069763A KR20110069763A KR20130009000A KR 20130009000 A KR20130009000 A KR 20130009000A KR 20110069763 A KR20110069763 A KR 20110069763A KR 20110069763 A KR20110069763 A KR 20110069763A KR 20130009000 A KR20130009000 A KR 20130009000A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/12—Waste materials; Refuse from quarries, mining or the like
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/026—Comminuting, e.g. by grinding or breaking; Defibrillating fibres other than asbestos
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/0072—Heat treatment
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/10—Clay
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Civil Engineering (AREA)
- Thermal Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mining & Mineral Resources (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention is an artificial lightweight aggregate using coal waste-rock and its manufacturing method, the raw material is 75-85% (weight ratio) of coal waste-rock powder, 5-10% adhesive, 1-5% additives and 5-10 fly ash Composition as an expanding solidifying agent; In addition, the method of manufacturing artificial lightweight aggregate includes the following procedure; Raw material selection, grinding, raw material mixing, stirring, raw material composition, drying treatment, sintering treatment, grading, and the preheating drying temperature of the drying treatment described above are controlled at 200-600 ℃ and sintering treatment temperature is controlled at 1150-1200 ℃. . Artificial lightweight aggregate produced by the above-mentioned process is high strength, hard, low thermal conductivity coefficient, high fire resistance, thermal insulation, anti-corrosion, impact resistance, dustproof, wear resistance, soundproof effect, energy-saving, radioactive and harmless materials, etc. It is equipped with the characteristics of high value-added and eco-friendly building material as a renewable resource using waste.
Description
The present invention relates to a building material and a method of manufacturing the same, and more particularly, to a kind of coal waste-rock artificial lightweight aggregate and a method of manufacturing the same.
The Gangwon-do region of our country is rich in coal waste-rock resources. The coal waste-rock contains sulfur water, which ignites spontaneously and releases harmful gases, causing pollution of air and water sources, damaging crops and trees, and destroying ecological equilibrium. As it hinders the waste of resources and production, the rapid disposal and comprehensive utilization of coal waste-rock is now a problem that needs to be solved even in national policy.
SUMMARY OF THE INVENTION An object of the present invention is to present a high-strength, energy-saving coal waste-rock artificial lightweight aggregate and a method for producing the coal waste-rock for the treatment and overall use of the coal waste-rock, and fully utilizes the mineral composition and combustible components of the coal waste-rock. It is to manufacture artificial lightweight aggregate using coal waste-rock which is solid and has a lot of expansion and porosity.
Therefore, in the present invention, invented to realize the above object, as an artificial lightweight aggregate using a kind of coal waste-rock, 75-85% (weight ratio) of coal waste-rock powder, 5-10% adhesive, 1-5% additive And 5-10% fly ash swelling agent.
Characterized above-mentioned coal waste-rock artificial lightweight aggregate: coal waste-rock powder particle size is 200-400 micrometers.
The adhesive described above for the characteristics of the coal waste-rock artificial light aggregate can be mixed and composed of 30-45% (weight ratio) clay and 55-65% shale, but the optimum mixing ratio is 40% clay and 60% shale.
The optimum mixing ratio of the additives described as the characteristics of the above-described coal waste-rock artificial light aggregate is 5% (weight ratio).
The additive described as a characteristic of the coal waste-rock artificial light aggregate described above is anthracite coal powder having a carbon content of 60% or more.
A process for the production of a kind of coal waste-rock artificial light aggregate includes the following procedures: raw material selection, grinding, raw material blending, stirring, raw material forming, drying, sintering, grading; The raw material selection is the powdered coal waste-rock after pretreatment process.
As a characteristic of the production method described above, grinding is divided into coarse grinding and fine grinding. The coarse crushed coal waste-rock particle diameter is ≤10mm and the finely pulverized coal waste-rock particle size is 200-400 mm.
As a feature of the manufacturing method described above, the raw material can be prepared by mixing coal waste-rock powder, adhesives, additives, and fly ash powder-extruding agents at a ratio, and then mixing and mixing the mixed raw materials into a disk molding machine and spraying the mixture with a ≤5% of the total weight. Water is added by spraying to make beads of raw material.
The drying treatment described as a characteristic of the above-mentioned manufacturing method is a preheating drying treatment of a conventional rotary rotary kiln preheating stage, and the preheating drying temperature is controlled at 200-600 ° C. and the sintering treatment described above is also a sintering treatment of the conventional rotary rotary kiln firing stage. And sintering temperature is 1150-1200 ° C.
[Technical solutions of the present invention came to research and development based on the following chemical principles. ]
1. The main chemical composition of natural coal waste-rock and the chemical composition of coal waste-rock powder are 60% of silicon dioxide as a common main chemical component of natural coal waste-rock; Aluminum oxide 17.84%; Iron oxide 6.16%; Calcium oxide 2.68%; Magnesium oxide can be replaced.
2. The chemical composition of coal waste-rock is 3.48% of silicon dioxide and acid, the content of SO 3 is less than 1%, the amount of S disappeared at high temperature sintering at 1150-1200 ℃ is 100%, but 70% of the total composition of silicon dioxide and aluminum oxide Occupied, and similar to the chemical composition of the clay, coal waste-rock is mainly made of aluminum oxide as a clay adhesive (typically 40-70% SiO 2 , 10-30% Al 2 O 3 , some 40% It is the same as the chemical composition of fly ash, and the content of silicon dioxide and aluminum oxide is higher than that of industrial waste coal ash.
Therefore, the production of "artificial coal powder" (machine manufacturing method) from natural coal waste-rock is a commercially available fly ash artificial light aggregate sintering process that realizes a new concept of physical and chemical structural materials, and the coal waste-rock coal powder artificial lightweight It is the basis of the theoretical foundation of aggregate and chemical physical structure.
The physical and chemical performance of coal waste-rock artificial lightweight aggregate is a stable and eco-friendly building material, and it is a renewable resource of fly ash artificial lightweight aggregate. At present, domestic and foreign coal waste-rock reserves are stored much more than coal ash emissions, which is an extensive and easily obtained resource.
Coal waste-rock artificial lightweight aggregate production of the present invention has the following characteristics: high strength, hard, low thermal conductivity coefficient, high fire resistance, thermal insulation, anti-corrosion, impact resistance, dustproof, wear resistance, soundproof effect, energy-saving, no sound It has features such as radioactive and harmful substances. It is an eco-friendly building material with renewable value added waste. On-site casting, prefabrication by precast method, artificial lightweight aggregate concrete with high strength structure, hollow block, reinforced concrete, pure concrete, sound insulation wall panel can be manufactured, and can be applied not only to sidewalk block, but also in bridges, roads, transportation pipes, etc. can.
<Detailed embodiments will be described below with reference to the drawings>
1 is a production process flow chart of coal waste-rock artificial lightweight aggregate according to the present invention.
Figure 2 is a photograph showing the appearance of the coal waste-rock artificial lightweight aggregate prepared according to the present invention.
Hereinafter, with reference to the accompanying drawings will be described the preferred raw material composition and action of the present invention for achieving the above object.
Example 1 manufacturing method of artificial light aggregate using coal waste-rock
See FIG. 1;
1. Mineral selection: Remove the debris in the coal waste-rock and coarse the crushed coal waste-rock with the crusher, and crush the crushed coal waste-rock again with a dedicated crusher to the diameter of ≤10mm and again with the Raymond mill Processed from coal waste-rock powder, the adhesive consists of 35% of clay (weight ratio) and 65% of shale in order.
2. Raw Material Blend: A mixed raw material is formed with 85% (weight ratio) of coal waste-rock powder, 5% adhesive, and 10% fly ash expanding solidifying agent.
3.Add the mixed raw material to the spiral stirrer and stir evenly
4. Sung-gu: When the above-mentioned mixed raw material is transferred to a disk-shaped ball, and 3% of water is added by spraying, the material is spherical in shape according to the rotational inertia of the disc. It is molded by 生 料 球). The raw material produced is transferred to the raw material entrance of the rotary rotary kiln through the pulpit lift;
5. Drying treatment: The preheating process is carried out at the preheating stage in the rotary rotary kiln and the temperature is controlled at 400 ℃.
6. Sintering treatment: The material after preheating enters the kiln baking expansion zone (expansion table length 4.5m), and when the baking expansion temperature reaches the point of 1150 ℃, the artificial coal aggregate, which is the target coal, is manufactured and finished.
7. Grade sorting: Sintered coal waste-rock aggregates are sorted by grade and used as light sand with a diameter of 5mm or less, and diameters of 7-15mm are used as artificial lightweight aggregates. The coagulum is also screened and subjected to secondary crushing, and then replaced with sand and stone to be used as concrete aggregate.
Example 2:
See FIG. 1;
1. Mineral selection: Remove the debris in the coal waste-rock and coarse the crushed coal waste-rock by crusher Process it. Consist of binder 40% (weight ratio) and shale 60% in order
2. Raw material blending: 75% (weight ratio) of waste coal powder, 10% adhesive, 5% additives and 10% fly ash expanding solidifying agent are mixed.
3.Add the mixed raw material to the spiral stirrer and stir uniformly.
4. Sung-gu: Transfer the uniformly stirred raw material to the disk mill and add 5% water by spraying. The raw material is spherical in shape according to the rotational inertia of the disc. It is formed by molding into a ryo-gu. The manufactured raw material is transferred to the raw material entrance of the rotary rotary kiln through the reel type elevator.
5. Drying treatment: The raw material is preheated at the preheating stage in the rotary rotary kiln and the temperature is controlled at 600 ℃.
6. Sintering treatment: The material after the preheating process enters the calcined plastic expansion zone (expansion length of 6m), and when the firing expansion temperature reaches 1200 ℃, the target coal waste-rock artificial lightweight aggregate is completed.
7. Grade sorting: Sintered coal waste-rock aggregates are sorted by grade and used as light sand with a diameter of 5mm or less, and diameters 7-15mm are used as artificial lightweight aggregates. The coagulum is also screened and subjected to secondary crushing, and sand and stone are used as concrete aggregates.
Claims (9)
Coal waste-rock powder 75-85%
Adhesive 5-10%
Addition 1-5%
Artificial lightweight aggregate using coal waste rock composed of 5-10% by weight of fly ash expanding solidifying agent and its manufacturing method
The adhesive described can be formulated with a mixture of 35-45% clay and 55-65% shale (weight ratio), but the optimal mixing ratio is artificial lightweight aggregate using coal waste-rock mixed with 40% clay and 60% shale. And a method for producing the same.
Coal waste-rock artificial lightweight aggregate and the manufacturing method which consisted of 5% (weight ratio) of the optimal mix ratio of the additive mentioned.
The additive described adds anthracite powder of 60% or more of carbon content, and the coal waste-rock artificial lightweight aggregate and its manufacturing method characterized by the above-mentioned.
The coal waste-rock pulverization described includes coarse pulverization and fine pulverization, coarse pulverization is a diameter ≤ 10 mm, fine pulverization is artificial lightweight aggregate using coal waste-rock characterized by a particle size of 200-400 micrometers.
By the manufacturing method described; A coal waste-rock artificial light weight aggregate and a method for producing the mixed raw material by molding a spherical shape into a spherical shape, by spraying water with a spraying method with a total weight ratio of 1-5%.
The drying treatment described is a preheating drying treatment, and the drying temperature is 200 ° C-600 ° C; The sintering treatment described is a conventional sintering process treatment, and the coal waste-rock artificial light aggregate and its production method are characterized in that the sintering temperature is 1150 ° C-1200 ° C.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20110069763A KR20130009000A (en) | 2011-07-14 | 2011-07-14 | Coal gangue ceramsite and its preparation approach |
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|---|---|---|---|
| KR20110069763A KR20130009000A (en) | 2011-07-14 | 2011-07-14 | Coal gangue ceramsite and its preparation approach |
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Cited By (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103553553A (en) * | 2013-10-25 | 2014-02-05 | 东北大学 | Method of preparing ceramsite by sintering industrial waste residue of barren coal gangue as raw materials |
| CN104387025A (en) * | 2014-10-24 | 2015-03-04 | 重庆福希建材有限公司 | Full-internal combustion one-time palletizing burning production technology for energy-saving type sintered shale hollow blocks |
| CN105174993A (en) * | 2015-08-26 | 2015-12-23 | 刘永茂 | Production technology for porous or hollow ceramic wall brick or ceramic building block |
| CN105819720A (en) * | 2016-03-05 | 2016-08-03 | 成都育芽科技有限公司 | Pyrite tailing ceramsite used for garden greening, and preparation method thereof |
| CN107915471A (en) * | 2017-12-01 | 2018-04-17 | 武汉钢铁有限公司 | A kind of light thermal-insulation aggregate and method that iron-stone tailing is prepared using large-sized rotary kiln |
| KR101870332B1 (en) * | 2017-10-30 | 2018-06-22 | 에스제이 주식회사 | Device for manufactruring artificial lightweight aggregate using coal and manufacturing method for lightweight aggregate using coal waste |
| CN108675815A (en) * | 2018-05-25 | 2018-10-19 | 南昌大学 | A kind of preparation method of flyash sludge ceramsite |
| CN108751942A (en) * | 2018-08-25 | 2018-11-06 | 合肥汉甲陶瓷科技有限公司 | A kind of preparation method of modified gangue for pottery brick |
| CN108794049A (en) * | 2018-08-23 | 2018-11-13 | 大连地拓环境科技有限公司 | A kind of magnesite tailings light ceramic and preparation method thereof |
| CN108863426A (en) * | 2018-07-10 | 2018-11-23 | 黄河三角洲京博化工研究院有限公司 | A kind of super light ceramisite of the greasy filth containing cold rolling and preparation method thereof |
| CN108863401A (en) * | 2018-07-07 | 2018-11-23 | 大连地拓环境科技有限公司 | A kind of silver CHARACTERISTICS OF TAILINGS SAND high-strength ceramic granule and preparation method thereof |
| CN109809726A (en) * | 2019-04-02 | 2019-05-28 | 江西理工大学 | A kind of Tungsten smelting waste slag ceramic particle of no added ingredient and preparation method thereof |
| CN109836128A (en) * | 2019-03-27 | 2019-06-04 | 日昌升集团有限公司 | Utilize the haydite and preparation method thereof of aggregate sandstone tailing production |
| CN109928652A (en) * | 2019-04-19 | 2019-06-25 | 四川省劲腾环保建材有限公司 | A method of it prepares and controls sulfide and sulfate in extruding dregs porcelain granule |
| CN109942275A (en) * | 2019-04-17 | 2019-06-28 | 郑州市新郑梅久实业有限公司 | A kind of ceramsite sand and its processing technology using gangue production |
| CN110104975A (en) * | 2019-05-15 | 2019-08-09 | 中南大学 | A kind of technique that belt type roasting machine pelletizing method prepares gangue lightweight aggregate |
| CN110104979A (en) * | 2019-05-15 | 2019-08-09 | 中南大学 | A method of gangue lightweight aggregate is prepared using belt sintering |
| CN110194675A (en) * | 2019-06-18 | 2019-09-03 | 大连地拓环境科技有限公司 | A kind of magnesite barren rock prepares baking-free lightweight haydite and preparation method thereof |
| CN111333404A (en) * | 2020-01-06 | 2020-06-26 | 武汉工程大学 | Lightweight porous phosphorus tailing ceramsite and preparation method thereof |
| CN111825474A (en) * | 2019-04-15 | 2020-10-27 | 淮南东辰集团有限责任公司 | Coal gangue ceramsite and preparation method thereof |
| CN111847938A (en) * | 2020-07-06 | 2020-10-30 | 上海大学 | Method for producing environment-friendly ceramsite by utilizing biogas residue hydrothermal carbon |
| CN111960803A (en) * | 2020-08-27 | 2020-11-20 | 国电科学技术研究院有限公司 | Production process for directly preparing ceramsite in pulverized coal combustion power generation process |
| CN114057465A (en) * | 2021-11-29 | 2022-02-18 | 中国十七冶集团有限公司 | Foaming non-fired ceramsite prepared from waste aluminum ash and iron tailings and preparation method thereof |
| CN115122484A (en) * | 2022-07-04 | 2022-09-30 | 哈尔滨泽能环保科技有限公司 | Heterogeneous catalyst ceramsite preparation device and preparation method thereof |
| CN115448699A (en) * | 2022-09-28 | 2022-12-09 | 王尚 | Building energy-saving heat-insulating material and preparation method thereof |
| CN115739935A (en) * | 2022-12-05 | 2023-03-07 | 淮南东辰固废利用有限公司 | Preparation device and production process for producing ceramsite from coal gangue |
| CN115959922A (en) * | 2022-12-16 | 2023-04-14 | 内蒙古工业大学 | Coal-based solid waste thermal insulation aggregate and preparation method and application thereof |
| CN117550913A (en) * | 2024-01-11 | 2024-02-13 | 内蒙古工业大学 | Lightweight solid waste porous aggregate and preparation method and application thereof |
-
2011
- 2011-07-14 KR KR20110069763A patent/KR20130009000A/en not_active Application Discontinuation
Cited By (36)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103553553A (en) * | 2013-10-25 | 2014-02-05 | 东北大学 | Method of preparing ceramsite by sintering industrial waste residue of barren coal gangue as raw materials |
| CN104387025A (en) * | 2014-10-24 | 2015-03-04 | 重庆福希建材有限公司 | Full-internal combustion one-time palletizing burning production technology for energy-saving type sintered shale hollow blocks |
| CN105174993A (en) * | 2015-08-26 | 2015-12-23 | 刘永茂 | Production technology for porous or hollow ceramic wall brick or ceramic building block |
| CN105819720A (en) * | 2016-03-05 | 2016-08-03 | 成都育芽科技有限公司 | Pyrite tailing ceramsite used for garden greening, and preparation method thereof |
| KR101870332B1 (en) * | 2017-10-30 | 2018-06-22 | 에스제이 주식회사 | Device for manufactruring artificial lightweight aggregate using coal and manufacturing method for lightweight aggregate using coal waste |
| CN107915471A (en) * | 2017-12-01 | 2018-04-17 | 武汉钢铁有限公司 | A kind of light thermal-insulation aggregate and method that iron-stone tailing is prepared using large-sized rotary kiln |
| CN108675815A (en) * | 2018-05-25 | 2018-10-19 | 南昌大学 | A kind of preparation method of flyash sludge ceramsite |
| CN108675815B (en) * | 2018-05-25 | 2021-06-11 | 南昌大学 | Preparation method of fly ash sludge ceramsite |
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| CN108863426A (en) * | 2018-07-10 | 2018-11-23 | 黄河三角洲京博化工研究院有限公司 | A kind of super light ceramisite of the greasy filth containing cold rolling and preparation method thereof |
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| CN108751942A (en) * | 2018-08-25 | 2018-11-06 | 合肥汉甲陶瓷科技有限公司 | A kind of preparation method of modified gangue for pottery brick |
| CN109836128A (en) * | 2019-03-27 | 2019-06-04 | 日昌升集团有限公司 | Utilize the haydite and preparation method thereof of aggregate sandstone tailing production |
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| CN109942275A (en) * | 2019-04-17 | 2019-06-28 | 郑州市新郑梅久实业有限公司 | A kind of ceramsite sand and its processing technology using gangue production |
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| CN109928652A (en) * | 2019-04-19 | 2019-06-25 | 四川省劲腾环保建材有限公司 | A method of it prepares and controls sulfide and sulfate in extruding dregs porcelain granule |
| CN110104975A (en) * | 2019-05-15 | 2019-08-09 | 中南大学 | A kind of technique that belt type roasting machine pelletizing method prepares gangue lightweight aggregate |
| CN110104979A (en) * | 2019-05-15 | 2019-08-09 | 中南大学 | A method of gangue lightweight aggregate is prepared using belt sintering |
| CN110104975B (en) * | 2019-05-15 | 2021-06-08 | 中南大学 | Process for preparing coal gangue lightweight aggregate by belt type roasting machine pelletizing method |
| CN110104979B (en) * | 2019-05-15 | 2021-06-08 | 中南大学 | Method for preparing coal gangue lightweight aggregate by adopting belt sintering |
| CN110194675A (en) * | 2019-06-18 | 2019-09-03 | 大连地拓环境科技有限公司 | A kind of magnesite barren rock prepares baking-free lightweight haydite and preparation method thereof |
| CN111333404A (en) * | 2020-01-06 | 2020-06-26 | 武汉工程大学 | Lightweight porous phosphorus tailing ceramsite and preparation method thereof |
| CN111333404B (en) * | 2020-01-06 | 2022-05-10 | 武汉工程大学 | Lightweight porous phosphorus tailing ceramsite and preparation method thereof |
| CN111847938A (en) * | 2020-07-06 | 2020-10-30 | 上海大学 | Method for producing environment-friendly ceramsite by utilizing biogas residue hydrothermal carbon |
| CN111960803A (en) * | 2020-08-27 | 2020-11-20 | 国电科学技术研究院有限公司 | Production process for directly preparing ceramsite in pulverized coal combustion power generation process |
| CN111960803B (en) * | 2020-08-27 | 2022-04-08 | 国电科学技术研究院有限公司 | Production process for directly preparing ceramsite in pulverized coal combustion power generation process |
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