CN102775084A - Pulverized fuel ash, steel slag and coal gangue resource utilization method - Google Patents
Pulverized fuel ash, steel slag and coal gangue resource utilization method Download PDFInfo
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- CN102775084A CN102775084A CN2012103037352A CN201210303735A CN102775084A CN 102775084 A CN102775084 A CN 102775084A CN 2012103037352 A CN2012103037352 A CN 2012103037352A CN 201210303735 A CN201210303735 A CN 201210303735A CN 102775084 A CN102775084 A CN 102775084A
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- flyash
- coal gangue
- ore
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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
Abstract
The invention discloses a pulverized fuel ash, steel slag and coal gangue resource utilization method which is characterized by comprising the steps of: respectively grinding and proportioning pulverized fuel ash, steel slag and coal gangue, and screening after proportioning, wherein the screening granularity is 24-300 meshes; then carrying out magnetic separation on the slurry to separate out iron ore, carrying out floatation on the magnetic-separated slurry to separate out valuable mineral substances to obtain tailings; and preparing the tailings into man-made pouring stone. The pulverized fuel ash, steel slag and coal gangue resource utilization method has the beneficial effects of adjusting measures to local conditions aiming at the problems that the coal mine and mining and metallurgy regions have more underground mine holes and more ground depressions, the geological strength is poor, and the industrial waste pulverized fuel ash, steel slag and coal gangue are difficultly treated and stacked, changing wastes into valuables, firstly separating out the valuable substances from the pulverized fuel ash, steel slag and coal gangue, and then backfilling residual slag of the pulverized fuel ash, steel slag and coal gangue into mine holes and depressions.
Description
Technical field
The present invention relates to a kind of flyash, slag and coal gangue resource utilization method, belong to mining and metallurgy wastes such as flyash, slag and coal gangue and reclaim the application technology as the second resource field.
Background technology
At present, along with the development of industry and urban construction, the flyash of coal-burning power plant, the mine coal gangue that screens, the rubbish of city expansion construction generation and the slag quantity discharged of steelworks increase year by year.Not only take a large amount of farmlands and soil, also can cause environmental pollution.And As time goes on serious geologic hazards and environmental pollution also can take place in a large amount of pits, tunnel and worked-out section that mining stays; Run off arable land, mountain forest, house damage, groundwater pollution and to the harm of lives and properties such as people and animals etc. like landslide, cracking, subsidence, water source.The social contradications that cause thus are also more outstanding, and we mankind fundamentally change and destroyed the earth, and our governance model is provisional, answer acute characteristics obvious, lacks permanent mechanism.Control measures is imperfection more, and " more than three three is few " phenomenon is serious, and the one, resettlement is settled many, and restoration of the ecosystem is few; The 2nd, improvement on the ground is many, and underground improvement is few; The 3rd, the security deposit imposes many, and actual the use lacked.In face of so much geologic hazard of recurring in the gob, it is so pale, so weak and feeble that our improvement seems.In order to survive, we must adopt an effective measure, and repair the earth, are transformed into the earth on the celestial body of a Sustainable development.And the method that is used for repairing the earth now a kind of be simply to be backfilled to pit, tunnel and worked-out section to rubbish and waste residue that mining and industrial production produce, this method has just been looked for a underground refuse tip, also can cause groundwater pollution simultaneously.Another kind method is with cement and debris mixed perfusion; And this method can not guarantee the full weight of filling; Can not guarantee the close adhesion of each contact surface; More can not guarantee combining closely of top and original rocks, and not reach the stable effect of thorough recovery geologic framework, the cost that expends simultaneously is very high.Time-proven, these repair modes are infeasible economically, and are unreliable technically.
Producing coal and smelting iron and steel industry mining and metallurgy has left over mine tailing and wastes such as a large amount of flyash, coal gangue and slag again simultaneously.Current flyash, coal gangue and slag major part all are to pile up and landfill disposal, and comprehensive utilization only is to accomplish simply to press brick etc., and the valuable constituent utilization ratio is extremely low, and production cycle while is long, complex process, and cost is high.
The staple of flyash consists of: SiO
2, Al
2O
3, FeO, Fe
2O
3, CaO, TiO
2, MgO, K
2O, Na
2O, SO
3, MnO
2Deng, also have P in addition
2O
5Deng.Wherein silicon oxide, titanium oxide be from clay, the rock page or leaf; Red stone is mainly from pyrite; Natural manganese dioxide and quicklime are from its corresponding carbonate and vitriol.Slag mainly is made up of the oxide compound of calcium, iron, silicon, magnesium and small amount of aluminum, manganese, phosphorus etc.Main mineral facies are the Solid solution that the oxide compound of tricalcium silicate, Dicalcium Phosphate (Feed Grade), monticellite, calcium manganolite, iron calcium aluminate and silicon, magnesium, iron, manganese, phosphorus forms, and also contain small-amount free quicklime and metallic iron, fluorapatite etc.The staple of coal gangue is Al
2O
3, SiO
2, also contain the Fe that quantity does not wait in addition
2O
3, CaO, MgO, Na
2O, K
2O, P
2O
5, S and micro-rare elements (gallium, vanadium, titanium, cobalt).Coal gangue is thrown aside, takies tract.Sulfide in the coal gangue is overflowed or leached can atmosphere pollution, farmland and water body.Waste dump also can the spontaneous combustion presence of fire, or in the avalanche in rainy season, silts the river up and cause disaster.
Can know that to above raw-material analysis flyash, slag and coal gangue wherein still have the composition of recyclable utilization, iff is simple landfill or presses brick to handle that this processing mode is a kind of great wasting of resources.Simultaneously, simple landfill is handled with the pressure brick and is filled because the slit is big, and structure is not compact, and intensity is low, can not repair to some extent original destructive surface infrastructure.
Summary of the invention
The objective of the invention is to, a kind of flyash, slag and coal gangue resource utilization method are provided.After valuable mineral composition extraction in flyash, coal gangue and the slag, its tailings is used to fill the surface infrastructure intensity reparation that mining brings, and increases ground capable of using area, improves the comprehensive utilization of flyash, slag and coal gangue, and reduces processing cost.
Technical scheme of the present invention.Coal ash, slag and coal gangue resource utilization method comprise the steps:
A, flyash is joined slurry; Sieve after joining slurry, the granularity of sieving is the 24-300 order, again slurry is carried out magnetic separation; Select the iron ore in the flyash; Flyash slurry after the magnetic separation carries out flotation, selects bauxite, zinc ore, copper mine, molybdenum ore and tin ore in the flyash, obtains the flyash tailings that is the main body with silicon, calcium;
B, with the slag abrasive dust, join slurry, cross the 24-300 mesh sieve, carry out magnetic separation, select the iron ore in the slag, obtain the slag tailings;
C, with the coal gangue abrasive dust, cross the 24-300 mesh sieve, join slurry; Carry out magnetic separation, select the iron ore in the coal gangue, then slurry is carried out flotation; Select bauxite, zinc ore, copper mine, molybdenum ore, tin ore and carbon in the coal gangue, obtain the coal gangue tailings that is the main body with silicon, calcium.
Said flyash tailings, slag tailings and coal gangue tailings; Carry out the press filtration oven dry respectively; Component meter is by weight converted water with flyash tailings 30-70 part, slag tailings 10-50 part, colliery powder tailings 10-20 part, lime 1-10 part, terra alba 1-10 part and whipping agent 0.0001-0.0003 part and is mixed well again, injects in hole, ore deposit, the culvert; Condensed 1-24 month, and prepared hole, ore deposit backfill cast stone.
Hole, said ore deposit backfill cast stone, the component meter is prepared from flyash tailings 40-60 part, slag tailings 22-40 part, colliery powder tailings 12-18 part, lime 2-6 part, terra alba 2-6 part, whipping agent 0.0001-0.0003 part by weight.
Said whipping agent is aluminium powder, hydrogen-carbonate inorganic salt, tea saponin or rosined soap.
Said whipping agent is an aluminium powder.
Said flyash tailings, slag tailings and coal gangue tailings; Carry out the press filtration oven dry respectively; Component meter is by weight converted water with flyash tailings 30-70 part, slag tailings 10-50 part, colliery powder tailings 10-20 part, lime 1-10 part and terra alba 1-10 part and is mixed well again, injects in the depression; Condensed 1-24 month, and prepared the depression with cast stone.
Said depression is with cast stone, and the component meter is prepared from flyash tailings 40-60 part, slag tailings 22-40 part, colliery powder tailings 12-18 part, lime 2-6 part and terra alba 2-6 part by weight.
Said cast stone, the building waste residue that also adds 5-15 part.
Beneficial effect of the present invention is that many to colliery and [underground hole, mining and metallurgy area, the depression, ground is many; The geology insufficient strength; And trade waste flyash, slag and coal gangue be difficult to the problem handling and stack, suits measures to local conditions, and turns waste into wealth; Valuable components in flyash, slag and the coal gangue is chosen out earlier, and the residue with flyash, slag and coal gangue carries out hole, ore deposit, depression backfill again.The foaming artificial cast stone raw material that the present invention relates to is drawn materials abundant, and ME is simple.The residue of flyash, slag and coal gangue is powder, can also be made into slurry after, directly send into pit, tunnel, depression and the worked-out section that needs backfill with pipeline, condense into artificial cast stone after the foaming, reduce transportation cost.And foaming technique wherein can make each contact surface of pit, tunnel and worked-out section combine closely; The drawback of having eliminated the top especially and can't combining closely with contact surface because of action of gravity; Ultimate intensity after thoroughly solidifying is equivalent to 50-200 label cement concrete strengths, thereby thoroughly recovers the stability of geologic framework.And there is not water-soluble soluble substance polluted underground water body in the whole technological process.In addition, in this foaming artificial cast stone a large amount of holes is arranged, have water-permeable, can not change the underground water trend, can not move towards to change and cause artificial new geologic hazard because of phreatic.The most important thing is that flyash related among the present invention, coal gangue, building waste and slag can obtain all effectively utilizing, accomplish to make the best use of everything, have not a particle of waste, bring great social benefit and economic benefit to society.Can recover the stability of original geologic framework effectively.
Cast stone mix proportion scheme of the present invention with each raw material powder process, convert after the form slurry, injects the hole, ore deposit, culvert condenses, and can slowly generate hydraulic cementing materials, and its staple is Calucium Silicate powder, aluminate and ferro-aluminate.For each components in proportions in the prescription, the applicant discovers that slag adds many more, and agglomerative cast stone intensity is big more, but slag is too much, can cause cast stone cracking.Through whipping agent, make cast stone to expand, the space that does not pour into cast stone is filled expires, simultaneously can polluted underground water layer and soil property.The cast stone of this flyash, slag and coal gangue comprehensive utilization can reduce former stone exploitation, and improve flyash, slag and coal gangue greatly utilize face and utilization ratio, drive the recycling of flyash.Whipping agent in the present invention's prescription is selected concrete foamers such as aluminium powder and sodium hydrogencarbonate for use; Aluminium powder preferably; The aluminium powder foaming process is stable, the convenient control of foamed time, and the cast stone agglomerative time is regulated and control through the proportioning of slag in the raw material and gypsum content usually at one month to 2 years.For the depression,, do not use whipping agent to get final product owing to do not need foaming and intumescing.
Test through the applicant, after the iron ore in flyash, slag and the coal gangue is selected, be not only and reclaimed its valuable cost, also reduced the iron level in the cast stone, can improve the intensity of cast stone, obtained beyond thought effect.
Through applicant's test, the test-results such as the following table of the present invention's prescription:
The present invention is feasible economically: the backfill raw materials cost is cheap, can also the valuable resource in the raw material be reclaimed, and increases the volume of pouring into a mould stone through foam process, can further reduce the consumption of raw material.Raw material will be processed into powder when valuable components reclaims, raw material can further reduce transportation cost through pipeline transportation to cast backfill place.Can realize backfill with less cost to colliery and [underground hole, mining and metallurgy area.Simultaneously, the geology after the backfill is stable, has avoided local resident's resettlement to settle, and can also utilize the soil again, has further improved land use value.
Technical reliable: the cast stone intensity after the curing is equivalent to 100-200 label cement concrete strengths, and foaming technique can make each contact surface of pit, tunnel and worked-out section combine closely, and can thoroughly recover the stability of geologic framework.All raw material does not have water-soluble poisonous soluble substance polluted underground water body.In addition, in the foaming artificial cast stone a large amount of holes is arranged, have water-permeable, can not change the underground water trend.
Environmental-protecting performance is good: hole, the ore deposit geology after the backfill is stable, can polluted underground water, can not change the underground water trend, and cause new geological problem.
In sum, the present invention is a kind of from ultimate processing scheme economic, the technical mineral-type industrial refuse that all can implement.
Embodiment
Embodiments of the invention 1.Flyash, slag and coal gangue resource utilization method comprise the steps:
A, flyash is joined slurry, sieve after joining slurry, the granularity of sieving is the 24-300 order; Again slurry is carried out magnetic separation, select the iron ore in the flyash, the flyash slurry after the magnetic separation carries out flotation; Select bauxite, zinc ore, copper mine, molybdenum ore, tin ore and other valuable ore resources in the flyash; Concrete mineral substance confirms that according to the mineral products content of various places the flotation mode adopts existing flotation mode, obtains the flyash tailings that is the main body with silicon, calcium; The flyash staple is silicon, aluminium, iron and other oligometallic oxide compound; Geological condition according to each place of production is different; Mineral substance contained in the flyash is also different; Through existing floatation process, can valuable mineral substance in the flyash be selected, include but not limited to zinc ore, copper mine, molybdenum ore, tin ore etc.
B, with the slag abrasive dust, join slurry, cross the 24-300 mesh sieve, carry out magnetic separation, select the iron ore in the slag, obtain the slag tailings;
C, with the coal gangue abrasive dust, cross the 24-300 mesh sieve, join slurry; Carry out magnetic separation, select the iron ore in the coal gangue, then slurry is carried out flotation; Select bauxite, zinc ore, copper mine, molybdenum ore, tin ore and carbon in the coal gangue, obtain the coal gangue tailings that is the main body with silicon, calcium; Coal gangue is interior except carbon; Staple is silicon, aluminium, iron and other oligometallic oxide compound; Geological condition according to each place of production is different, and mineral substance contained in the coal gangue is also different, through existing floatation process; Can valuable mineral substance in the coal gangue be selected, include but not limited to zinc ore, copper mine, molybdenum ore, tin ore etc.
Said flyash tailings, slag tailings and coal gangue tailings; Carry out the press filtration oven dry respectively; Component meter is by weight converted water with flyash tailings 30-70 part, slag tailings 10-50 part, colliery powder tailings 10-20 part, lime 1-10 part, terra alba 1-10 part and whipping agent 0.0001-0.0003 part and is mixed well again, injects in hole, ore deposit, the culvert; Condensed 1-24 month, and prepared hole, ore deposit backfill cast stone.Said whipping agent is aluminium powder, hydrogen-carbonate inorganic salt, tea saponin or rosined soap.The hydrogen-carbonate inorganic salt comprise metal-salts such as sodium hydrogencarbonate, saleratus, Magnesium hydrogen carbonate.
In cast stone raw material, the building waste residue that can also add 5-15 part is further recycled construction waste.The building waste residue comprises inorganic building wastes such as remaining concrete behind the building demolition, brick, pottery, glass, and the building waste residue is worn into powder or granular, can join in the cast stone.
Embodiments of the invention 2.Flyash, slag and coal gangue resource utilization method comprise the steps:
A, flyash is joined slurry; Sieve after joining slurry, the granularity of sieving is 200 orders, again slurry is carried out magnetic separation; Select the iron ore in the flyash; Flyash slurry after the magnetic separation carries out flotation, selects bauxite, zinc ore, copper mine, molybdenum ore, tin ore and other valuable ore resources in the flyash, obtains the flyash tailings that is the main body with silicon, calcium;
B, with the slag abrasive dust, join slurry, cross 200 mesh sieves, carry out magnetic separation, select the iron ore in the slag, obtain the slag tailings;
C, with the coal gangue abrasive dust, cross 200 mesh sieves, join slurry, slurry carries out flotation, selects bauxite, zinc ore, copper mine, molybdenum ore, tin ore and carbon and other valuable ore resources in the coal gangue, obtains the coal gangue tailings that is the main body with silicon, calcium.
Hole, said ore deposit backfill cast stone, better proportioning is that the component meter is prepared from flyash tailings 40-60 part, slag tailings 22-40 part, colliery powder tailings 12-18 part, lime 2-6 part, terra alba 2-6 part, whipping agent 0.0001-0.0003 part by weight.Said whipping agent is an aluminium powder, and the granulometric facies of aluminum powder particle size and each raw material powder are worked as.
Embodiments of the invention 3.Flyash, slag and coal gangue resource utilization method; Prepare flyash tailings, slag tailings and coal gangue tailings according to the foregoing description, carry out press filtration oven dry respectively, again component meter by weight; Flyash tailings 30-70 part, slag tailings 10-50 part, colliery powder tailings 10-20 part, lime 1-10 part and terra alba 1-10 part are converted water mixes well; In the injection depression, condensed 1-24 month, prepare the depression with cast stone.
Embodiments of the invention 4.Flyash, slag and coal gangue resource utilization method; Prepare flyash tailings, slag tailings and coal gangue tailings according to the foregoing description; Carry out the press filtration oven dry respectively; The component meter prepares the depression with cast stone by flyash tailings 40-60 part, slag tailings 22-40 part, colliery powder tailings 12-18 part, lime 2-6 part and terra alba 2-6 part by weight.
Embodiments of the invention 5.Flyash, slag and coal gangue resource utilization method; Prepare flyash tailings, slag tailings and coal gangue tailings according to the foregoing description; Component meter by weight; Be prepared from for 0.0002 part 40 parts of flyash tailings, 30 parts of slag tailings, 15 parts of colliery powder tailings, 2 parts in lime, 2 parts of terra albas, whipping agent, the granularity of each starting material powder is 200 orders, and whipping agent is an aluminium powder.After each starting material powder converted water and mix well, inject hole, ore deposit, culvert, through condensing for a long time, intensity can reach 150-180kg/cm
2
Embodiments of the invention 6.Flyash, slag and coal gangue resource utilization method; Prepare flyash tailings, slag tailings and coal gangue tailings according to the foregoing description; Component meter by weight; Be prepared from for 0.0002 part 35 parts of flyash tailings, 23 parts of slag tailings, 18 parts of colliery powder tailings, 5 parts in lime, 5 parts of terra albas, 10 parts of building wastes, whipping agent, the granularity of each starting material powder is 240 orders, and whipping agent is an aluminium powder.After each starting material powder converted water and mix well, inject the hole, ore deposit, through condensing for a long time, the slag type cast stone that obtains, intensity can reach 120-150kg/cm
2
Embodiments of the invention 7.Flyash, slag and coal gangue resource utilization method; Prepare flyash tailings, slag tailings and coal gangue tailings according to the foregoing description; Component meter by weight; Be prepared from for 0.0003 part 55 parts of flyash tailings, 27 parts of slag tailings, 14 parts of colliery powder tailings, 8 parts in lime, 7 parts of terra albas, whipping agent, the granularity of each starting material powder is 180 orders, and whipping agent is an aluminium powder.After each starting material powder converted water and mix well, inject hole, ore deposit, culvert, through condensing for a long time, the slag type cast stone that obtains, intensity can reach 110-150kg/cm
2, this intensity is equivalent to list structure intensity usually.
Embodiments of the invention 8.Flyash, slag and coal gangue resource utilization method; Prepare flyash tailings, slag tailings and coal gangue tailings according to the foregoing description; Component meter by weight; Be prepared from for 10 parts 45 parts of flyash tailings, 25 parts of slag tailings, 15 parts of colliery powder tailings, 10 parts in lime, terra alba, the granularity of each starting material powder is 200 orders.After each starting material powder converted water and mix well, inject the depression, through condensing for a long time, the slag type cast stone that obtains, intensity can reach 150-180kg/cm
2, this intensity is better than general massif surface infrastructure intensity.
The above; It only is preferred embodiment of the present invention; Be not that the present invention is done any pro forma restriction; Anyly do not break away from technical scheme content of the present invention, to any simple modification, equivalent variations and modification that above embodiment did, all still belong in the scope of technical scheme of the present invention according to technical spirit of the present invention.
Claims (8)
1. a flyash, slag and coal gangue resource utilization method is characterized in that: comprise the steps:
A, flyash is joined slurry; Sieve after joining slurry, the granularity of sieving is the 24-300 order, again slurry is carried out magnetic separation; Select the iron ore in the flyash; Flyash slurry after the magnetic separation carries out flotation, selects bauxite, zinc ore, copper mine, molybdenum ore and tin ore in the flyash, obtains the flyash tailings that is the main body with silicon, calcium;
B, with the slag abrasive dust, join slurry, cross the 24-300 mesh sieve, carry out magnetic separation, select the iron ore in the slag, obtain the slag tailings;
C, with the coal gangue abrasive dust, cross the 24-300 mesh sieve, join slurry; Carry out magnetic separation, select the iron ore in the coal gangue, then slurry is carried out flotation; Select bauxite, zinc ore, copper mine, molybdenum ore, tin ore and carbon in the coal gangue, obtain the coal gangue tailings that is the main body with silicon, calcium.
2. flyash according to claim 1, slag and coal gangue resource utilization method; It is characterized in that: said flyash tailings, slag tailings and coal gangue tailings; Carry out the press filtration oven dry respectively; Component meter is by weight converted water with flyash tailings 30-70 part, slag tailings 10-50 part, colliery powder tailings 10-20 part, lime 1-10 part, terra alba 1-10 part and whipping agent 0.0001-0.0003 part and is mixed well again, injects in hole, ore deposit, the culvert; Condensed 1-24 month, and prepared hole, ore deposit backfill cast stone.
3. flyash according to claim 2, slag and coal gangue resource utilization method; It is characterized in that: hole, said ore deposit backfill cast stone; The component meter is prepared from flyash tailings 40-60 part, slag tailings 22-40 part, colliery powder tailings 12-18 part, lime 2-6 part, terra alba 2-6 part, whipping agent 0.0001-0.0003 part by weight.
4. flyash according to claim 2, slag and coal gangue resource utilization method is characterized in that: said whipping agent is aluminium powder, hydrogen-carbonate inorganic salt, tea saponin or rosined soap.
5. flyash according to claim 4, slag and coal gangue resource utilization method is characterized in that: said whipping agent is an aluminium powder.
6. flyash according to claim 1, slag and coal gangue resource utilization method; It is characterized in that: said flyash tailings, slag tailings and coal gangue tailings, carry out press filtration oven dry respectively, again component meter by weight; Flyash tailings 30-70 part, slag tailings 10-50 part, colliery powder tailings 10-20 part, lime 1-10 part and terra alba 1-10 part are converted water mixes well; In the injection depression, condensed 1-24 month, prepare the depression with cast stone.
7. flyash according to claim 6, slag and coal gangue resource utilization method; It is characterized in that: said depression is with cast stone; The component meter is prepared from flyash tailings 40-60 part, slag tailings 22-40 part, colliery powder tailings 12-18 part, lime 2-6 part and terra alba 2-6 part by weight.
8. according to claim 2 or 6 described flyash, slag and coal gangue resource utilization method, it is characterized in that: said cast stone, the building waste residue that also adds 5-15 part.
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| CN103071595A (en) * | 2012-12-31 | 2013-05-01 | 西部矿业集团有限公司 | Flotation method for gallium in fly ash |
| CN103769306A (en) * | 2014-01-26 | 2014-05-07 | 河南天罡实业有限公司 | Method for floating molybdenum in fly ash |
| CN105110810A (en) * | 2015-09-01 | 2015-12-02 | 河南祥盛陶粒有限公司 | Preparation process of ceramsite with high strength and hydrophobicity |
| CN107118509A (en) * | 2017-05-27 | 2017-09-01 | 贵州大学 | Tea saponin modification converter slag and its composite floor board being made with waste or used plastics |
| CN107118506A (en) * | 2017-05-27 | 2017-09-01 | 贵州大学 | Tea saponin modification blast furnace slag and its composite floor brick being made with waste or used plastics |
| CN113769886A (en) * | 2021-09-10 | 2021-12-10 | 厦门紫金矿冶技术有限公司 | Resource utilization method of mine high-iron high-acid wastewater neutralization slag |
| CN115745560A (en) * | 2022-11-29 | 2023-03-07 | 泰安市晓然园林市政工程有限公司 | Preparation method for making artificial marble by using coal gangue and steel slag as aggregate |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103071595A (en) * | 2012-12-31 | 2013-05-01 | 西部矿业集团有限公司 | Flotation method for gallium in fly ash |
| CN103071595B (en) * | 2012-12-31 | 2016-08-03 | 西部矿业股份有限公司 | A kind of method of flotation gallium in flyash |
| CN103769306A (en) * | 2014-01-26 | 2014-05-07 | 河南天罡实业有限公司 | Method for floating molybdenum in fly ash |
| CN105110810A (en) * | 2015-09-01 | 2015-12-02 | 河南祥盛陶粒有限公司 | Preparation process of ceramsite with high strength and hydrophobicity |
| CN107118509A (en) * | 2017-05-27 | 2017-09-01 | 贵州大学 | Tea saponin modification converter slag and its composite floor board being made with waste or used plastics |
| CN107118506A (en) * | 2017-05-27 | 2017-09-01 | 贵州大学 | Tea saponin modification blast furnace slag and its composite floor brick being made with waste or used plastics |
| CN107118509B (en) * | 2017-05-27 | 2018-12-28 | 贵州大学 | Tea saponin modification converter slag and its with composite floor board made of waste plastic |
| CN107118506B (en) * | 2017-05-27 | 2019-01-25 | 贵州大学 | Tea saponin modification blast furnace slag and its with composite floor brick made of waste plastic |
| CN113769886A (en) * | 2021-09-10 | 2021-12-10 | 厦门紫金矿冶技术有限公司 | Resource utilization method of mine high-iron high-acid wastewater neutralization slag |
| CN115745560A (en) * | 2022-11-29 | 2023-03-07 | 泰安市晓然园林市政工程有限公司 | Preparation method for making artificial marble by using coal gangue and steel slag as aggregate |
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