CN102432266A - Manufacture method and application of baking-free coal gangue concrete - Google Patents
Manufacture method and application of baking-free coal gangue concrete Download PDFInfo
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- CN102432266A CN102432266A CN201110256433XA CN201110256433A CN102432266A CN 102432266 A CN102432266 A CN 102432266A CN 201110256433X A CN201110256433X A CN 201110256433XA CN 201110256433 A CN201110256433 A CN 201110256433A CN 102432266 A CN102432266 A CN 102432266A
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- coal gangue
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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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Abstract
The invention relates to a manufacture technology and an application of baking-free coal gangue concrete, which belong to the technical field of energy saving and environment protection. The manufacture technology is characterized in that the baking-free coal gangue concrete consists of the following ingredients: 50 to 80 percent of coal gangue, 5 to 15 percent of magnesium oxide, 2.5 to 15 percent of magnesium chloride, 10 to 25 percent of water and 0 to 0.5 percent of waterproof agents. The products have the characteristics that: 1, coal gangue concrete has the advantages of baking-free effect, energy saving, light weight, high intensity and fast solidification, can be used for filling mine worked out sections and mining roadway, can also be used for making urban high-intensity pavement bricks and road edge bricks and can also replace building materials such as various clay bricks, cement bricks and the like in modern buildings; 2, the production process for filling the mine by the coal gangue concrete is simple and convenient, the cost is low, the pollution is avoided, the energy is saved, and the environment is protected; 3, a large amount of waste water and sewage generated in the mining and coal washing process can be sufficiently utilized, the water resource utilization rate can be effectively improved, and the water resources are saved; and 4, the application prospects are wide, and good economic benefits and social benefits are realized.
Description
Technical field
The invention belongs to the energy-conserving and environment-protective technical field, relate to a kind of making method and application of unburned coal gangue concrete.
Background technology
Coal is one of China's main energy sources; Along with development of economic construction; Coal in China output ranks first in the world, and is increasing year by year, a large amount of coal gangue that can produce in coal mining, coal separation, the coal washing process; It accounts for 10%～15% of coal production, and discharge capacity is above 200,000,000 tons China's coal gangue year so far.Coal gangue is the maximum industrial residue of China's discharge capacity, but a year utilization ratio only accounts for about 20% of year discharge capacity at present, and most of coal gangue is also continuing appropriation of land and contaminate environment.In addition, the exploitation in mine, underground meeting forms a large amount of worked-out sections, often causes multiple environmental geology disasters such as surface collapse, soil damage.The comprehensive utilization coal gangue not only can be saved soil, protection environment; And the backfill mining technique through coal gangue, can mine tailing be backfilling into the underground worked-out section of mine, can alleviate subsidence; Reduce pollution and the destruction of mine tailing ground release to environment, further liberation covers Mineral resources.Like this, have very important significance to improving economic benefit of enterprises, social benefit and environment protection.
Traditional coal gangue concrete (as: application number: 96115369.5,200710093023.1 and 200810240472.9), be aggregate with (activity) coal gangue after calcining, the spontaneous combustion.Because calcining coal gangue is calcined under the high temperature more than 1100 ℃ and is formed; So, be that the concrete energy consumption of aggregate is big with the calcining coal gangue, be unfavorable for environment protection, cost is high; In addition, because the share that the coal gangue after the spontaneous combustion accounts in the coal gangue total amount is little, be the concrete of aggregate therefore with the coal gangue after the spontaneous combustion, can not solve the processing and the problem of complex utilization of other a large amount of coal gangues.
Existing coal gangue concrete is a gelling material with Portland cement, lime all; Because ordinary Portland cement is relatively low than magnesium cement bond intensity; So the cement parameter is big, the coal gangue parameter is little, have in addition also participate in fine sand as fine aggregate, the coal gangue concrete unit weight of processing is big; Intensity is not high, complex process, cost high, is not suitable for backfill of extensive down-hole or scale operation coal gangue concrete materials for wall.
Summary of the invention
The technical problem that the present invention will solve is the present situation that quantity discharged is big, utilization ratio is low to existing coal gangue; A kind of making method and application that characteristics such as utilizes magnesia cement to have high-strengthly, fast to coagulate, cohesive force is strong produce the unburned coal gangue concrete of magnesium oxychloride concrete is provided, and described working method is:
1, raw material is formed (weight %):
1) coal gangue 50-80%: coal gangue is made up of coarse aggregate and pulverizing back coal gangue powder, flyash or the sandy soil fine aggregate of coal gangue, mine tailing or country rock after pulverizing;
2) Natural manganese dioxide 5-15%: active oxidation magnesium dust;
3) magnesium chloride 2.5-15%: for bischofite, halogen sheet, Magnesium Chloride Anhydrous or contain the aqueous solution (more than 18 ° of B é) of magnesium chloride;
4) water 10-25%: sewage, the waste water of tap water, river or colliery discharging;
5) water-resisting agent 0-0.5%: phosphoric acid or phosphoric acid salt.
The coarse aggregate particle of the coal gangue after the described pulverizing, mine tailing or country rock is φ ﹤ 2cm, coal gangue powder, flyash or sandy soil fine aggregate particle φ ﹤ 2mm;
Described coarse aggregate in coal gangue, mine tailing or the country rock pulverized any one, the mixture of two or three arbitrary proportion;
Described fine aggregate be in coal gangue powder, flyash or the sandy soil any one, the mixture of two or three arbitrary proportion;
The ratio of described coarse aggregate and fine aggregate is 1: 1-3: 1.
2, production technique:
1) at first coal gangue is carried out break process, make its particle φ ﹤ 2cm;
2) form 1 according to above-mentioned raw materials) the coal gangue particle add stirrer with Natural manganese dioxide, Natural manganese dioxide coal gangue batch mixing is processed in stirring;
3) placing pond or other container to add the entry stirring in magnesium chloride by 1 material rate makes the magnesium chloride dissolving, processes magnesium chloride brine;
4) be placed with 2) the stirrer of Natural manganese dioxide coal gangue batch mixing in add 3) magnesium chloride brine, stir and process magnesite gangue cement slip;
5) with 4) process magnesite gangue cement slip and inject mould with steam piano and process coal gangue concrete brick, building block, floor tile or curb or build building masonry wall;
6) with magnesite coal gangue slip 4) with pipe-line transportation to the well of digging up mine, be used for backfill mine goaf and tunnel.
3, products characteristics:
1) unburned coal gangue concrete has unburned, light weight, high-strength, rapid-curing advantage; It not only can be used for backfill mine goaf and mining tunnel; And can be used for making the high-strength road face brick in city, curb brick, various clay bricks, cement brick and the buildings in the also alternative modern architecture build body of wall;
2) can make full use of great amount of wastewater, the sewage that produces in mining, the coal washing process, effectively improve water utilization rate, the conserve water resource;
3) utilize the production technique of coal gangue concrete backfill mine easy, cost is low, pollution-free, not only can practice thrift a large amount of arable lands after the mine backfill, and can significantly improve mining recovery, economic results in society are obvious.
The making method of a kind of unburned coal gangue concrete of the present invention and application have following advantage compared with prior art: be gelling material with the magnesia cement because of this patent 1; Various coal gangues with unburned pulverizing are coarse aggregate; With coal gangue powder, flyash or sandy soil is that the magnesite coal gangue concrete unit weight processed of fine aggregate is little; Intensity is high, energy consumption is little, technology is simple, cost is low, is fit to backfill of extensive down-hole or scale operation coal gangue concrete materials for wall; 2, this patent is produced in the coal gangue concrete process and can be fully utilized great amount of wastewater and the sewage that produces in mining, the coal washing process, helps environment protection, reduces water pollution, conserve water resource, can effectively alleviate coal mining enterprise's sewage and wastewater treatment burden; 3, easy, the energy-conserving and environment-protective of this concrete production, this patent not only can be processed coal gangue concrete brick, building block with a large amount of coal gangues, and can be used for making the high-strength road face brick in city, curb; The more important thing is that can coal gangue be processed high-intensity magnesite coal gangue concrete can directly be used for backfill mine goaf and tunnel.
Embodiment
Below in conjunction with embodiment the making method and the utilisation technology scheme of a kind of unburned coal gangue concrete of the present invention are further described.
A kind of unburned coal gangue concrete making method, described unburned coal gangue concrete is made up of the raw material of following weight ratio:
Coal gangue 50-80%, Natural manganese dioxide 5-15%, magnesium chloride 2.5-15%, water 10-25%, water-resisting agent 0-0.5%
Described unburned coal gangue concrete making method is following:
1) at first coal gangue is carried out break process, make its particle φ ﹤ 2cm, and to make the ratio of coarse aggregate and fine aggregate (φ ﹤ 2mm) is 1: 1-3: 1;
2) form 1 according to above-mentioned raw materials) the coal gangue particle add stirrer with Natural manganese dioxide, Natural manganese dioxide coal gangue batch mixing is processed in stirring;
3) placing pond or other container to add the entry stirring in magnesium chloride by 1 material rate makes the magnesium chloride dissolving, processes magnesium chloride brine;
4) be placed with 2) the stirrer of Natural manganese dioxide coal gangue batch mixing in add magnesium chloride brine 3., stir and process magnesite gangue cement slip;
5) with 4) process magnesite gangue cement slip and inject mould with steam piano and process coal gangue concrete brick, building block, floor tile or curb or build building masonry wall;
6) with magnesite coal gangue slip 4) with pipe-line transportation to the well of digging up mine, be used for backfill mine goaf and tunnel.
The raw material of described unburned coal gangue concrete is:
1) coal gangue is made up of coarse aggregate and pulverizing back coal gangue powder, flyash or the sandy soil fine aggregate of coal gangue, mine tailing or country rock after pulverizing;
2) Natural manganese dioxide is by the active oxidation magnesium dust;
3) magnesium chloride is bischofite, halogen sheet, Magnesium Chloride Anhydrous or contains the above aqueous solution of 18 ° of B é of magnesium chloride;
4) water 5-25%: sewage, the waste water of tap water, river or colliery discharging;
5) water-resisting agent 0-0.5%; Phosphoric acid or phosphoric acid salt.
The coarse aggregate particle of the coal gangue after the described pulverizing, mine tailing or country rock is φ ﹤ 2cm, coal gangue powder, flyash or sandy soil fine aggregate particle φ ﹤ 2mm.
Described coarse aggregate in coal gangue, mine tailing or the country rock pulverized any one, the mixture of two or three arbitrary proportion.
Described fine aggregate be in coal gangue powder, flyash or the sandy soil any one, the mixture of two or three arbitrary proportion.
The ratio of described coarse aggregate and fine aggregate is 1: 1-3: 1.
Embodiment 1.
1) at first to coal gangue carry out fragmentation, the processing of sieving, make its particle φ ﹤ 2cm and make the coal gangue coarse aggregate and the ratio of coal gangue powder is 3: 1;
2) coal gangue and the 7 parts of Natural manganese dioxide of getting 80 parts of pulverizing add stirrers and stir, and process Natural manganese dioxide coal gangue batch mixing;
3) getting 5 parts of bischofites places small-sized pond to add 8 parts in water fully to stir and make the magnesium chloride dissolving, process magnesium chloride brine;
4) be placed with 2) the stirrer of Natural manganese dioxide coal gangue batch mixing in add 3) magnesium chloride brine fully stir and process magnesite coal gangue slip;
5) with 4) the magnesite gangue cement slip processed directly injects mould, processes HS magnesite coal gangue concrete brick and building block;
6) ultimate compression strength that records the magnesite coal gangue concrete after the week is above 10.0Mpa.
Embodiment 2.
1) at first to coal gangue carry out fragmentation, the processing of sieving, make its particle φ ﹤ 2cm and make the coal gangue coarse aggregate and the ratio of coal gangue powder is 2: 1;
2) coal gangue and the 7 parts of Natural manganese dioxide of getting 65 parts of pulverizing add stirrers and stir, and process Natural manganese dioxide coal gangue batch mixing;
3) getting 5 parts of bischofites places small-sized pond to add 8 parts in water fully to stir and make the magnesium chloride dissolving, process magnesium chloride brine;
4) be placed with 2) the stirrer of Natural manganese dioxide coal gangue batch mixing in add 3) magnesium chloride brine fully stir and process magnesite coal gangue slip;
5) with 4) the magnesite gangue cement slip processed directly injects mould, processes HS magnesite coal gangue concrete brick and building block;
6) ultimate compression strength that records the magnesite coal gangue concrete after the week is above 10.0Mpa.
Embodiment 3.
1) at first to coal gangue carry out fragmentation, the processing of sieving, make its particle φ ﹤ 2cm and make the coal gangue coarse aggregate and the ratio of coal gangue powder is 1: 1;
2) coal gangue and the 7 parts of Natural manganese dioxide of getting 50 parts of pulverizing add stirrers and stir, and process Natural manganese dioxide coal gangue batch mixing;
3) getting 5 parts of bischofites places small-sized pond to add 8 parts in water fully to stir and make the magnesium chloride dissolving, process magnesium chloride brine;
4) be placed with 2) the stirrer of Natural manganese dioxide coal gangue batch mixing in add 3) magnesium chloride brine fully stir and process magnesite coal gangue slip;
5) with 4) the magnesite gangue cement slip processed directly injects mould, processes HS magnesite coal gangue concrete brick and building block;
6) ultimate compression strength that records the magnesite coal gangue concrete after the week is above 10.0Mpa.
Claims (7)
1. unburned coal gangue concrete is characterized in that being made up of the raw material of following weight ratio:
Coal gangue 50-80%, Natural manganese dioxide 5-15%, magnesium chloride 2.5-15%, water 10-25%, water-resisting agent 0-0.5%.
2. unburned coal gangue concrete making method according to claim 1 is characterized in that described making method is following:
1. at first coal gangue is carried out break process, make its particle φ ﹤ 2cm;
2. form according to above-mentioned raw materials 1. coal gangue particle and Natural manganese dioxide are added stirrer, stir and process Natural manganese dioxide coal gangue batch mixing;
3. placing pond or other container to add the entry stirring in magnesium chloride by 1 material rate makes the magnesium chloride dissolving, processes magnesium chloride brine;
4. in the stirrer that is placed with Natural manganese dioxide coal gangue batch mixing 2., add magnesium chloride brine 3., stir and process magnesite gangue cement slip;
5. will 4. process magnesite gangue cement slip processes coal gangue concrete brick, building block, floor tile or curb or builds building masonry wall with steam piano injection mould;
6. with magnesite coal gangue slip 4. with pipe-line transportation to the well of digging up mine, can be used to backfill mine goaf and tunnel.
3. unburned coal gangue concrete according to claim 1 is characterized in that described raw material consists of:
1. coal gangue is made up of coarse aggregate and pulverizing back coal gangue powder, flyash or the sandy soil fine aggregate of coal gangue, mine tailing or country rock after pulverizing;
2. Natural manganese dioxide is by the active oxidation magnesium dust;
3. magnesium chloride is bischofite, halogen sheet, Magnesium Chloride Anhydrous or contains the above aqueous solution of 18 ° of B é of magnesium chloride;
4. water 5-25%: sewage, the waste water of tap water, river or colliery discharging;
5. water-resisting agent 0-0.5%: phosphoric acid or phosphoric acid salt.
4. the coarse aggregate particle of coal gangue, mine tailing or country rock after the pulverizing according to claim 3 is φ ﹤ 2cm, coal gangue powder, flyash or sandy soil fine aggregate particle φ ﹤ 2mm.
5. coarse aggregate according to claim 4 in coal gangue, mine tailing or the country rock pulverized any one, the mixture of two or three arbitrary proportion.
6. fine aggregate according to claim 4 be in coal gangue powder, flyash or the sandy soil any one, the mixture of two or three arbitrary proportion.
7. the ratio of coarse aggregate according to claim 4 and fine aggregate is 1: 1-3: 1.
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| CN201110256433XA CN102432266A (en) | 2011-09-01 | 2011-09-01 | Manufacture method and application of baking-free coal gangue concrete |
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| CN201110256433XA CN102432266A (en) | 2011-09-01 | 2011-09-01 | Manufacture method and application of baking-free coal gangue concrete |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103922657A (en) * | 2014-04-16 | 2014-07-16 | 长安大学 | Burn-free heat-insulation external tile produced from gangue and production method of external tile |
| CN104591601A (en) * | 2015-01-23 | 2015-05-06 | 安徽理工大学 | Superpoly-gangue concrete and preparation method thereof |
| CN104671712A (en) * | 2015-01-13 | 2015-06-03 | 河海大学 | Compact concrete doped with coal ash and sandy spoil and preparation method thereof |
| CN104692774A (en) * | 2015-02-11 | 2015-06-10 | 赵胜 | Preparation method of color-glazed reflective paving stone |
| CN104743999A (en) * | 2015-03-09 | 2015-07-01 | 沈阳化工大学 | Dual-component mining foam paste filling material and preparation method thereof |
| CN107226676A (en) * | 2017-06-16 | 2017-10-03 | 孙嘉岐 | A kind of coal slime, coal gangue concrete and its modulator approach |
| CN108117376A (en) * | 2017-12-29 | 2018-06-05 | 黑龙江省寒地建筑科学研究院 | A kind of preparation method of sintered perforated brick |
| CN114276117A (en) * | 2021-12-31 | 2022-04-05 | 王佳水 | Water permeable material and application thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103922657A (en) * | 2014-04-16 | 2014-07-16 | 长安大学 | Burn-free heat-insulation external tile produced from gangue and production method of external tile |
| CN103922657B (en) * | 2014-04-16 | 2015-08-19 | 长安大学 | Coal gangue baking-free heat preservation exterior wall tile and production method thereof |
| CN104671712A (en) * | 2015-01-13 | 2015-06-03 | 河海大学 | Compact concrete doped with coal ash and sandy spoil and preparation method thereof |
| CN104671712B (en) * | 2015-01-13 | 2016-09-14 | 河海大学 | A kind of compactness concrete of adding coal ash and grittiness spoir and preparation method thereof |
| CN104591601A (en) * | 2015-01-23 | 2015-05-06 | 安徽理工大学 | Superpoly-gangue concrete and preparation method thereof |
| CN104692774A (en) * | 2015-02-11 | 2015-06-10 | 赵胜 | Preparation method of color-glazed reflective paving stone |
| CN104743999A (en) * | 2015-03-09 | 2015-07-01 | 沈阳化工大学 | Dual-component mining foam paste filling material and preparation method thereof |
| CN107226676A (en) * | 2017-06-16 | 2017-10-03 | 孙嘉岐 | A kind of coal slime, coal gangue concrete and its modulator approach |
| CN108117376A (en) * | 2017-12-29 | 2018-06-05 | 黑龙江省寒地建筑科学研究院 | A kind of preparation method of sintered perforated brick |
| CN108117376B (en) * | 2017-12-29 | 2021-01-26 | 黑龙江省寒地建筑科学研究院 | Preparation method of sintered porous brick |
| CN114276117A (en) * | 2021-12-31 | 2022-04-05 | 王佳水 | Water permeable material and application thereof |
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Inventor after: Shan Fashou Inventor after: Yuan Qin Inventor after: Zhong Xiaoyong Inventor after: Qin Zhanjie Inventor after: Wei Haicheng Inventor before: Shan Fashou Inventor before: Shan Falu Inventor before: Shan Facai |
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Free format text: CORRECT: INVENTOR; FROM: SHAN FASHOU SHAN FALU SHAN FACAI TO: SHAN FASHOU YUAN QIN ZHONG XIAOYONG QIN ZHANJIE WEI HAICHENG |
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Application publication date: 20120502 |