CN111533570A - Coal gangue ceramsite and preparation method thereof - Google Patents
Coal gangue ceramsite and preparation method thereof Download PDFInfo
- Publication number
- CN111533570A CN111533570A CN202010255912.9A CN202010255912A CN111533570A CN 111533570 A CN111533570 A CN 111533570A CN 202010255912 A CN202010255912 A CN 202010255912A CN 111533570 A CN111533570 A CN 111533570A
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- CN
- China
- Prior art keywords
- ceramsite
- coal gangue
- raw materials
- preparation
- sintering aid
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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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/009—Porous or hollow ceramic granular materials, e.g. microballoons
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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
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/131—Inorganic additives
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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
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
-
- 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
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/1321—Waste slurries, e.g. harbour sludge, industrial muds
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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
- C04B33/00—Clay-wares
- C04B33/32—Burning methods
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
- C04B2235/422—Carbon
- C04B2235/425—Graphite
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Inorganic Chemistry (AREA)
- Carbon And Carbon Compounds (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a coal gangue ceramsite, which comprises the following raw materials in percentage by weight: 75-95% of coal gangue, 5-12% of firing clay, 3-9% of sintering aid, 15-25% of quartz tail mud, 1-5% of forming agent and 2-8% of graphite powder. According to the coal gangue ceramsite and the preparation method thereof, the graphite powder is added and calcined in the preparation process of the ceramsite, so that the overall strength of the ceramsite is effectively improved, and the chemical stability of the ceramsite is also improved.
Description
Technical Field
The invention relates to the field of ceramsite preparation methods, and particularly relates to coal gangue ceramsite and a preparation method thereof.
Background
The coal gangue is black waste stone with less carbon content discharged in the coal mining process, is solid waste with the largest discharge amount in China, and the discharge and accumulation of the coal gangue not only occupies a large amount of cultivated land, but also causes great pollution to the earth surface and the atmosphere. The chemical components of the coal gangue are similar to those of clay, and the coal gangue contains high carbon and sulfur and has large ignition loss. The molten material with proper viscosity can be produced in enough quantity only in a certain temperature range, and the expansion performance is realized. According to its characteristics, China has developed coal gangue ceramsite.
The gangue ceramsite is produced by crushing, preheating, burning and expanding, cooling, grading and packaging gangue which meets the burning and expanding requirements. The quality of the obtained ceramsite product completely meets the national standard, part of technical indexes exceed the national standard, the quality of foreign similar products is achieved, and the ceramsite product is innovative, is carried out firstly and belongs to an environment-friendly product.
The coal gangue ceramsite prepared by the existing process is often low in stability and strength.
An effective solution to the problems in the related art has not been proposed yet.
Disclosure of Invention
The invention aims to provide a coal gangue ceramsite and a preparation method thereof, and aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the coal gangue ceramsite is characterized by comprising the following raw materials in percentage by weight: 75-95% of coal gangue, 5-12% of fired clay, 3-9% of sintering aid, 15-25% of quartz tail mud, 1-5% of forming agent and 2-8% of graphite powder.
Further, the method comprises the following steps:
(1) mixing coal gangue, fired clay, sintering aid and quartz tail mud according to the proportion in the right one;
(2) fully grinding the raw materials in the step one, and mixing;
(3) adding a forming agent in a corresponding proportion into the ground raw materials, and granulating and forming;
(4) high-temperature calcination;
(5) and (4) after the calcined ceramsite is cooled, screening by adopting screening machines with different particle sizes to obtain a corresponding ceramsite product.
Further, the raw materials in the step (1) are as follows according to the weight percentage: 75-95% of coal gangue, 5-12% of firing clay, 3-9% of sintering aid, 15-25% of quartz tail mud and 1-5% of forming agent.
Further, the temperature of the high-temperature calcination in the step (4) is 1200-.
Compared with the prior art, the invention has the following beneficial effects:
(1) according to the coal gangue ceramsite and the preparation method thereof, the graphite powder is added and calcined in the preparation process of the ceramsite, so that the overall strength of the ceramsite is effectively improved, and the chemical stability of the ceramsite is also improved.
Detailed Description
The invention will be further described with reference to specific embodiments:
the coal gangue ceramsite is characterized in that the coal gangue ceramsite raw materials are as follows according to the weight percentage: 75-95% of coal gangue, 5-12% of firing clay, 3-9% of sintering aid, 15-25% of quartz tail mud, 1-5% of forming agent and 2-8% of graphite powder.
Through the scheme of the invention:
(1) mixing coal gangue, fired clay, sintering aid and quartz tail mud according to the proportion in the right one;
(2) fully grinding the raw materials in the step one, and mixing;
(3) adding a forming agent in a corresponding proportion into the ground raw materials, and granulating and forming;
(4) high-temperature calcination;
(5) and (4) after the calcined ceramsite is cooled, screening by adopting screening machines with different particle sizes to obtain a corresponding ceramsite product.
According to the scheme of the invention, the raw materials in the step (1) are as follows according to the weight percentage: 75-95% of coal gangue, 5-12% of fired clay, 3-9% of sintering aid, 15-25% of quartz tail mud and 1-5% of forming agent.
Through the scheme of the invention, the temperature of the high-temperature calcination in the step (4) is 1200-1500 ℃, the calcination time is 60-90 minutes, and 1/3 of the total amount of the graphite powder is scattered in three batches every 30 minutes in the calcination process.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made without departing from the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (4)
1. The coal gangue ceramsite is characterized by comprising the following raw materials in percentage by weight: 75-95% of coal gangue, 5-12% of firing clay, 3-9% of sintering aid, 15-25% of quartz tail mud, 1-5% of forming agent and 2-8% of graphite powder.
2. The preparation method of the coal gangue ceramsite is characterized by comprising the following steps of:
(1) mixing coal gangue, fired clay, sintering aid and quartz tail mud according to the proportion in the first claim;
(2) fully grinding the raw materials in the step one, and mixing;
(3) adding a forming agent in a corresponding proportion into the ground raw materials, and granulating and forming;
(4) high-temperature calcination;
(5) and (4) after the calcined ceramsite is cooled, screening by adopting screening machines with different particle sizes to obtain a corresponding ceramsite product.
3. The preparation method of the coal gangue ceramsite according to claim 2, wherein the raw materials in the step (1) comprise, by weight: 75-95% of coal gangue, 5-12% of firing clay, 3-9% of sintering aid, 15-25% of quartz tail mud and 1-5% of forming agent.
4. The method for preparing coal gangue ceramsite as defined in claim 2, wherein the calcination temperature at high temperature in step (4) is 1200-.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010255912.9A CN111533570A (en) | 2020-04-02 | 2020-04-02 | Coal gangue ceramsite and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010255912.9A CN111533570A (en) | 2020-04-02 | 2020-04-02 | Coal gangue ceramsite and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111533570A true CN111533570A (en) | 2020-08-14 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010255912.9A Pending CN111533570A (en) | 2020-04-02 | 2020-04-02 | Coal gangue ceramsite and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112442353A (en) * | 2020-12-04 | 2021-03-05 | 新疆瑞克沃新材料有限公司 | Fracturing propping agent taking coal mine waste solids as raw materials and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109626960A (en) * | 2019-01-25 | 2019-04-16 | 攀枝花秉扬科技股份有限公司 | A kind of coal gangue haydite proppant and preparation method thereof |
-
2020
- 2020-04-02 CN CN202010255912.9A patent/CN111533570A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109626960A (en) * | 2019-01-25 | 2019-04-16 | 攀枝花秉扬科技股份有限公司 | A kind of coal gangue haydite proppant and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| （美）DANIEL A. CROWL等编著: "《化工过程安全基本原理与应用》", 30 September 2017, 中国石油大学出版社 * |
| 林彬荫等编著: "《耐火材料原料》", 31 October 2015, 冶金工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112442353A (en) * | 2020-12-04 | 2021-03-05 | 新疆瑞克沃新材料有限公司 | Fracturing propping agent taking coal mine waste solids as raw materials and preparation method thereof |
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Application publication date: 20200814 |