CN102775104B - A kind of depression flyash, slag and coal gangue make cast stone - Google Patents
A kind of depression flyash, slag and coal gangue make cast stone Download PDFInfo
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- CN102775104B CN102775104B CN201210303560.5A CN201210303560A CN102775104B CN 102775104 B CN102775104 B CN 102775104B CN 201210303560 A CN201210303560 A CN 201210303560A CN 102775104 B CN102775104 B CN 102775104B
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- flyash
- slag
- coal gangue
- cast stone
- depression
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Abstract
The invention discloses a kind of depression flyash, slag and coal gangue and make cast stone, it is characterized in that: described cast stone is prepared from by flyash, slag, colliery powder, lime and terra alba.The present invention is directed to colliery, mining and metallurgy many, the earth's surface not easily smooth exploitation in depression, area, and leave over the problem of the mine tailings such as a large amount of flyash, coal gangue and slag and waste, cast stone mix proportion scheme of the present invention is proposed, after each raw material powder process, converting form slurry, inject depression to condense, slowly can generate hydraulic cementing materials, its main component is Calucium Silicate powder, aluminate and ferro-aluminate.The cast stone of this flyash, slag and coal gangue comprehensive utilization can reduce the exploitation of former stone, and greatly improve flyash, slag utilize face and utilization ratio, drive the recycling of flyash.
Description
Technical field
The present invention relates to a kind of depression flyash, slag and coal gangue and make cast stone, belong to flyash, slag and coal gangue recovery and utilization technology field.
Background technology
At present, along with development that is industrial and urban construction, flyash, coal gangue, the rubbish of Urban Expansion construction generation and the slag quantity discharged of steelworks screened of mining of coal-burning power plant increase year by year.Not only occupy a large amount of farmlands and soil, also can cause environmental pollution.And serious geologic hazard and environmental pollution also As time goes on can be there is in a large amount of pits that mining stays, tunnel and worked-out section, as landslide, cracking, subsidence, water source run off, arable land, mountain forest, house damage, groundwater pollution and the harm etc. to lives and properties such as people and animals.The social contradications caused thus are also more outstanding, and we mankind fundamentally change and destroy the earth, and our governance model is provisional, answer acute feature obvious, lacks permanent mechanism.Control measures is imperfection more, and " more than three three is few " phenomenon is serious, and one is that Relocation and Settlement is many, and restoration of the ecosystem is few; Two is that improvement is many on the ground, and underground is administered few; Three to be that security deposit imposes many, actual use few.In face of so much geologic hazard that minery recurs, our improvement seems so pale, so weak and feeble.In order to survive, we must adopt an effective measure, and repair the earth, the earth are transformed into the celestial body of a Sustainable development.And method now for repairing the earth a kind of be that the rubbish produced in mining and industrial production and waste residue are simply backfilled to pit, tunnel and worked-out section, this method has just looked for a underground garbage field, also can cause groundwater pollution simultaneously.Another kind method is with cement and debris mixed perfusion, and this method can not ensure the full weight of filling, the close adhesion of each contact surface can not be ensured, more can not ensure combining closely of top and original rocks, and not reaching the effect that thoroughly recovery geologic framework is stable, the cost simultaneously expended is very high.Time-proven, these repair modes are infeasible economically, unreliable technically.
Producing coal and smelting iron and steel industry mining and metallurgy lose again mine tailing and wastes such as leaving a large amount of flyash, coal gangue and slag simultaneously.Current flyash, coal gangue and slag major part are all pile up and landfill disposal, and comprehensive utilization is only accomplish simply to press brick etc., and valuable constituent utilization ratio is extremely low, and the production cycle is long simultaneously, and complex process, cost is high.Therefore, invent a kind of flyash, slag comprehensive utilization make cast stone be necessary.
Summary of the invention
The object of the invention is to, provide a kind of depression flyash, slag and coal gangue to make cast stone.The comprehensive utilization of smelting slag, flyash and coal gangue is got up, for filling the surface infrastructure intensity reparation of digging up mine and bringing, increase can utilize ground area, can also by valuable mineral constituents extraction in flyash, coal gangue and slag, improve the comprehensive utilization of flyash, slag and coal gangue, and reduce processing cost.
Technical scheme of the present invention.Depression flyash, slag and coal gangue make cast stone, and described cast stone is prepared from by flyash, slag, colliery powder, lime and terra alba.
Above-mentioned depression flyash, slag and coal gangue make cast stone, by weight component meter, are prepared from by flyash 30-70 part, slag 10-50 part, colliery powder 10-20 part, lime 1-10 part and terra alba 1-10 part.
Above-mentioned depression flyash, slag and coal gangue make cast stone, by weight component meter, are prepared from by flyash 40-60 part, slag 22-40 part, colliery powder 12-18 part, lime 2-6 part and terra alba 2-6 part.
Above-mentioned depression flyash, slag and coal gangue make cast stone, and the granularity of described each starting material powder is 24 order-300 orders.
Above-mentioned depression flyash, slag and coal gangue make cast stone, and the granularity of described each starting material powder is 150 order-250 orders.
Above-mentioned depression flyash, slag and coal gangue make cast stone, and described cast stone also adds the building waste residue of 5-15 part.
Above-mentioned depression flyash, slag and coal gangue make cast stone, and described flyash, slag, colliery powder are processed by following steps:
A, flyash is with slurry, sieve after with slurry, granularity of sieving is 24-300 order, again slurry is carried out magnetic separation, select the iron ore in flyash, flyash slurry after magnetic separation carries out flotation, selects the bauxite in flyash, zinc ore, copper mine, molybdenum ore and tin ore, obtains the flyash tailings based on silicon, calcium;
B, by slag abrasive dust, carry out with slurry, cross 24-300 mesh sieve, carry out magnetic separation, select the iron ore in slag, obtain steel slag tailings;
C, by coal gangue abrasive dust, cross 24-300 mesh sieve, carry out with slurry, carry out magnetic separation, select the iron ore in coal gangue, then slurry is carried out flotation, select the bauxite in coal gangue, zinc ore, copper mine, molybdenum ore, tin ore and carbon, obtain the coal gangue tailings based on silicon, calcium;
Flyash tailings above-mentioned steps obtained, steel slag tailings and coal gangue tailings, prepare cast stone according to described technique.
Beneficial effect of the present invention is, for colliery and mining and metallurgy area depression, ground many, geology insufficient strength, and the problem that trade waste flyash, slag and coal gangue are difficult to process and stack, suit measures to local conditions, turn waste into wealth, flyash, slag and coal gangue are carried out depression backfill.The foaming artificial cast stone raw material that the present invention relates to is drawn materials abundant, and manufacturing process is simple, with short production cycle.Flyash, slag and coal gangue are powder, after can also slurry being made into, directly with pipeline send into need backfill tunnel, depression and worked-out section, condense into artificial cast stone, reduce transportation cost.Ultimate intensity after artificial cast stone of the present invention thoroughly solidifies is equivalent to 150-200 grade cement concrete strength, thus thoroughly recovers the stability of geologic framework.And in whole technological process, there is no water-soluble soluble substance polluted underground water body.The most important thing is that flyash, coal gangue, building waste and slag involved in the present invention all can be gathered materials on the spot, obtain all effectively utilizing, accomplish to make the best use of everything, bring great Social benefit and economic benefit to society.Effectively can recover the stability of original geologic framework.Thus, the present invention is feasible economically, and technically reliably, environmental-protecting performance is excellent.
Cast stone mix proportion scheme of the present invention, after each raw material powder process, converting form slurry, inject depression and condense, slowly can generate hydraulic cementing materials, its main component is Calucium Silicate powder, aluminate and ferro-aluminate.For the ratio of each composition in formula, applicant studies discovery, and slag adds more, and the cast stone intensity of condensation is larger, but slag is too much, can cause cast stone cracking.The cast stone of this flyash, slag and coal gangue comprehensive utilization can reduce the exploitation of former stone, and greatly improve flyash, slag utilize face and utilization ratio, drive the recycling of flyash.The time of cast stone condensation, usually at 1 month to 2 years, is regulated and controled by the proportioning of slag content and gypsum content in raw material.
Through applicant's test, test-results of the present invention is as following table:
Test through applicant, by the valuable components in flyash, slag and coal gangue, after selecting in iron ore, bauxite, carbon etc., be not only and reclaimed its valuable cost, also reduce the iron level in cast stone, about the intensity 10-20% of cast stone can be improved, obtain beyond thought effect.
The present invention is feasible economically: backfill low raw-material cost, can also reclaim the valuable resource in raw material.Raw material will be processed into powder when valuable components reclaims, and raw material by pipeline transportation to cast backfill place, can reduce further transportation cost.Can with cheap cost realize to colliery and mining and metallurgy area depression backfill.Meanwhile, the geology after backfill is stablized, and avoids the Relocation and Settlement of local resident, can also recycle, further increase land use value to soil.
Technically reliable: the cast stone intensity after solidification is equivalent to 50-200 grade cement concrete strengths, thoroughly can recover the stability of geologic framework.Whole raw material does not have water-soluble poisonous soluble substance polluted underground water body.
Environmental-protecting performance is excellent: the depression geology after backfill is stablized, can not polluted underground water.
To sum up telling, the present invention is a kind of ultimate processing scheme from mineral-type industrial refuse that is economic, that technically all can implement.
Embodiment
Embodiments of the invention 1.A kind of depression flyash, slag and coal gangue make cast stone, by flyash, slag, colliery powder, lime and terra alba through screening, powder process, be watered after mixing well and be prepared from, inject in depression, obtain pouring into a mould stone by condensation for a long time, cycle time of coagulation is 1 month-2 years.
Embodiments of the invention 2.According to different designs requirement, component meter by weight, is prepared from by flyash 30-70 part, slag 10-50 part, colliery powder 10-20 part, lime 1-10 part and terra alba 1-10 part, and the granularity of each starting material powder is 24 order-300 orders.Be watered by each starting material powder after mixing well, inject in depression, by the time of coagulation of half a year to one year, obtain pouring into a mould stone, its intensity is equivalent to the intensity of ordinary slag cement.
In cast stone raw material, the building waste residue of 5-15 part can also be added, recycle construction waste further.Building waste residue is the inorganic building waste such as remaining concrete, brick, pottery, glass after comprising building demolition, by building waste residue grinds or granular, can join in cast stone.
Embodiments of the invention 3.Depression flyash, slag and coal gangue make cast stone, and described flyash, slag, colliery powder are processed by following steps:
A, flyash is with slurry, sieve after with slurry, granularity of sieving is 24-300 order, again slurry is carried out magnetic separation, select the iron ore in flyash, flyash slurry after magnetic separation carries out flotation, selects the bauxite in flyash, zinc ore, copper mine, molybdenum ore and tin ore, obtains the flyash tailings based on silicon, calcium; Flyash main component is the oxide compound of silicon, aluminium, iron and other a small amount of metal, different according to the geological condition in each place of production, mineral substance contained in flyash is also different, by existing floatation process, mineral substance valuable in flyash can be selected, include but not limited to zinc ore, copper mine, molybdenum ore, tin ore etc.
B, by slag abrasive dust, carry out with slurry, cross 24-300 mesh sieve, carry out magnetic separation, select the iron ore in slag, obtain steel slag tailings;
C, by coal gangue abrasive dust, cross 24-300 mesh sieve, carry out with slurry, carry out magnetic separation, select the iron ore in coal gangue, then slurry is carried out flotation, select the bauxite in coal gangue, zinc ore, copper mine, molybdenum ore, tin ore and carbon, obtain the coal gangue tailings based on silicon, calcium; In coal gangue except carbon, main component is the oxide compound of silicon, aluminium, iron and other a small amount of metal, different according to the geological condition in each place of production, mineral substance contained in coal gangue is also different, by existing floatation process, mineral substance valuable in coal gangue can be selected, include but not limited to zinc ore, copper mine, molybdenum ore, tin ore etc.
By flyash tailings, steel slag tailings and coal gangue tailings, better proportioning is, component meter by weight, flyash tailings 40-60 part, steel slag tailings 22-40 part, colliery powder tailings 12-18 part, lime 2-6 part and terra alba 2-6 part are watered after mixing well, inject depression, by long-time condensation, obtain pouring into a mould stone.The granularity of each starting material powder is 150 order-250 orders.
Embodiments of the invention 4.Depression flyash, slag and coal gangue make cast stone, by weight component meter, and be prepared from by 45 parts, flyash, 25 parts, slag, colliery powder 15 parts, 3 parts, lime, terra alba 3 parts, each starting material particle size is 200 orders.Be watered by each starting material powder after mixing well, inject depression, by long-time condensation, the slag type cast stone obtained, its intensity can reach 140-180kg/cm
2.
Embodiments of the invention 5.Depression flyash, slag and coal gangue make cast stone, by weight component meter, are prepared from by 35 parts, flyash, 23 parts, slag, colliery powder 18 parts, 6 parts, lime, terra alba 6 parts and building waste residue 10 parts, and the granularity of each starting material powder is 240 orders.Be watered by each starting material powder after mixing well, inject depression, by long-time condensation, the slag type cast stone obtained, intensity can reach 120-150kg/cm
2.
Embodiments of the invention 6.Depression flyash, slag and coal gangue make cast stone, by weight component meter, are prepared from by 55 parts, flyash, 27 parts, slag, colliery powder 14 parts, 8 parts, lime, terra alba 7 parts, and the granularity of each starting material powder is 180 orders.After each starting material powder is watered and mixes well, inject depression, by long-time condensation, the slag type cast stone obtained, intensity can reach 100-140kg/cm
2.
Embodiments of the invention 7.A, flyash is with slurry, sieve after with slurry, granularity of sieving is 180 orders, again slurry is carried out magnetic separation, select the iron ore in flyash, flyash slurry after magnetic separation carries out flotation, selects the valuable mineral substance such as the bauxite in flyash, zinc ore, copper mine, molybdenum ore and tin ore, obtains flyash tailings;
B, by slag abrasive dust, carry out with slurry, cross 180 mesh sieves, carry out magnetic separation, select the iron ore in slag, obtain steel slag tailings;
C, by coal gangue abrasive dust, cross 180 mesh sieves, carry out with slurry, carry out magnetic separation, select the iron ore in coal gangue, then slurry is carried out flotation, select the valuable mineral substance such as the bauxite in coal gangue, zinc ore, copper mine, molybdenum ore, tin ore and carbon, obtain coal gangue tailings;
Component meter by weight, is prepared from by flyash tailings 55 parts, steel slag tailings 27 parts, colliery powder tailings 14 parts, 8 parts, lime, terra alba 7 parts, and the granularity of each starting material powder is 180 orders.After each starting material powder is watered and mixes well, inject depression, by long-time condensation, the slag type cast stone obtained, intensity can reach 110-160kg/cm
2.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, anyly do not depart from technical solution of the present invention content, the any simple modification done above embodiment according to technical spirit of the present invention, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (3)
1. depression flyash, slag and coal gangue make a cast stone, it is characterized in that: component meter by weight, are prepared from by flyash 40-60 part, slag 22-40 part, colliery powder 12-18 part, lime 2-6 part and terra alba 2-6 part; Described cast stone also adds the building waste residue of 5-15 part.
2. depression according to claim 1 flyash, slag and coal gangue make cast stone, it is characterized in that: the granularity of each starting material powder is 24 order-300 orders.
3. depression according to claim 2 flyash, slag and coal gangue make cast stone, it is characterized in that: the granularity of each starting material powder is 150 order-250 orders.
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| CN201210303560.5A CN102775104B (en) | 2012-08-24 | 2012-08-24 | A kind of depression flyash, slag and coal gangue make cast stone |
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| CN201210303560.5A CN102775104B (en) | 2012-08-24 | 2012-08-24 | A kind of depression flyash, slag and coal gangue make cast stone |
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| CN102775104B true CN102775104B (en) | 2015-08-26 |
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| CN110327892A (en) * | 2019-05-28 | 2019-10-15 | 昌鑫生态科技(陕西)有限公司 | High-performance adsorbent material |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1424275A (en) * | 2003-01-10 | 2003-06-18 | 中国矿业大学（北京校区） | Cementing materials for filling, slurry and preparing and filling processes |
| CN102155226A (en) * | 2010-11-30 | 2011-08-17 | 淄博市王庄煤矿 | Roadway backfill mining method for coal seams with medium-high thickness |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1424275A (en) * | 2003-01-10 | 2003-06-18 | 中国矿业大学（北京校区） | Cementing materials for filling, slurry and preparing and filling processes |
| CN102155226A (en) * | 2010-11-30 | 2011-08-17 | 淄博市王庄煤矿 | Roadway backfill mining method for coal seams with medium-high thickness |
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