CN102807388B - Safe and green mining method for simultaneously reinforcing and mining mineral resource - Google Patents
Safe and green mining method for simultaneously reinforcing and mining mineral resource Download PDFInfo
- Publication number
- CN102807388B CN102807388B CN201210304273.6A CN201210304273A CN102807388B CN 102807388 B CN102807388 B CN 102807388B CN 201210304273 A CN201210304273 A CN 201210304273A CN 102807388 B CN102807388 B CN 102807388B
- Authority
- CN
- China
- Prior art keywords
- tailings
- ore
- slurry
- flyash
- mining
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- 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 safe and green mining method for simultaneously reinforcing and mining a mineral resource. The method comprises the following steps of respectively grinding and proportioning coal ash, steel slag and coal gangue into pulp, sieving after proportioning into the pulp, and magnetically separating the pulp to select iron mine; floating the pulp after magnetic separation to select valuable minerals to obtain tailings, and preparing the tailings to obtain the pulp; and pouring the pulp into a mining mine through a pipeline and a hole, and solidifying the pulp to obtain a pouring stone support body to support the geology of the mining area. The mine is supported during mining, and the remaining ore around the mining area is mined. According to the novel safe and green mining technology, the green development and utilization of the resource is perfectly combined with the ecological rehabilitation; and the whole mineral resource is fully developed and utilized in a safe environment, and meanwhile, the green development, the cycle development and the low carbon development are advanced. Moreover, the whole tamping process is cheep in economy and reliable in technology and has a good environment-friendly performance.
Description
Technical field
The present invention relates to the safe green reoovery method of reinforcing limit, a kind of Mineral resources limit exploitation, belong to exploitation of mineral resources technical field.
Background technology
Due to the development of economy, the demand of Mineral resources is constantly increased, especially the demand for coal and metallic mineral resources is constantly aggravated, the pressure of Economic development causes mineral products to enter predatory random mining condition often, this is further degrading the environment in mining area, result in the serious waste of Mineral resources, geologic hazard is taken place frequently.Although China has put into effect a lot of relevant laws and regulations in recent years, the mineral products rate of extraction has progressively improved, and still has very large gap compared with developed countries.Just for coal, the overall rate of recovery of developed country's coal resources reaches 60% to 70%, and the rate of extraction of China on average only has about 20-30%, and some place is even less than 1%.There is " adopt one and lose one ", " adopt one and lose two " in large quantities, " eating fertilizer loses thin ", " having water to flow soon " only eat " heart of a Chinese cabbage " phenomenon, cause the coal of annual waste to reach 1,000,000,000 tons more than.The reason causing the rate of extraction low in China, except ore deposit master is in order to pursue short-term economic interests, is adopted and thickly being abandoned thin, adopting and easily abandon difficulty; The illegal coyoting of some small-size coal mines; Beyond the imperfection of state's laws regulation; Backwardness, the dangerous production practice of major cause or our house column type, formula of drilling and blasting cause.Even if the overall rate of recovery of developed country's coal resources exceeds about one times than China, but can not accomplish that underground mineral resources exploitation utilizes maximization, equally also there is potential safety hazard, also can cause geologic hazard.
Summary of the invention
The object of the invention is to, the safe green reoovery method that reinforcing limit, a kind of Mineral resources limit is exploited is provided.By flyash, coal gangue, slag and building waste Deep recycle after residue recover geologic framework intensity, to improve the safety coefficient in mining process, reach the coefficient of mining improving Mineral resources, Mineral resources are made to be exploited utilization fully, both can make over discarded hole, ore deposit shines the radiance of life again, also can ensure that the mine of exploiting now fully develops underground mineral resources under the premise that security is guaranteed, also can not produce new worked-out section and subsidence area simultaneously, significantly reduce the waste of Mineral resources, stop geologic hazard.Really realize production and the secure synchronization in mining area, mineral exploration and exploitation is synchronous with green.
Technical scheme of the present invention.The safe green reoovery method of reinforcing limit, Mineral resources limit exploitation, comprises the 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;
D, geological prospecting is carried out to the minery that mine is being exploited, according to geological condition, flyash tailings 30-70 part, steel 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 are watered and mix well, prepare slurry, injected by pipeline and hole in the hole, ore deposit of exploiting, solidify and obtain cast stone supporter, minery geology is supported, while exploitation, hole, ore deposit is supported, ensure the stable of minery geologic framework, then ore deposit more than around minery is exploited.
The safe green reoovery method of above-mentioned reinforcing limit, Mineral resources limit exploitation, in steps d, described cast stone, component meter by weight, is prepared from by flyash tailings 40-60 part, steel 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.
The safe green reoovery method of above-mentioned reinforcing limit, Mineral resources limit exploitation, described whipping agent is aluminium powder, hydrogen-carbonate inorganic salt, tea saponin or rosined soap.
The safe green reoovery method of above-mentioned reinforcing limit, Mineral resources limit exploitation, described whipping agent is aluminium powder.
The safe green reoovery method of above-mentioned reinforcing limit, Mineral resources limit exploitation, described cast stone, also adds the building waste residue of 5-15 part.
The safe green reoovery method of above-mentioned reinforcing limit, Mineral resources limit exploitation, in steps d, described cast stone supporter is the arch in cylindricality, door shape or hole, identical ore deposit.
The whipping agent of flyash, coal gangue, slag, building waste residue and some trace after Deep reclaims by the present invention mixes by a certain percentage, stirring pulping, pipeline is utilized progressively to pour into hole, ore deposit, worked-out section from the grouting mouth accomplished fluently in advance, after slurry complete expansion, make itself and hole, ore deposit surrounding close adhesion, particularly the top in hole, ore deposit and gap obtain adhesion well and tamp, after it solidifies completely, the stability of geologic framework just can thoroughly be recovered.Underground mineral resources just can be made again fully to be developed, deep exploitation can be carried out in the mining area of unminding.The safety that the present invention relates to, lasting exploit new technology, resource Green Development is utilized and restoration of the ecosystem perfect pair, while making whole Mineral resources obtain fully developing in the environment of a safety, advance Green Development, cycle development, low carbon development, and whole tamp technique economically cheap, technically reliable, environmental-protecting performance is excellent.The most important thing is that the present invention can make the exploitation of underground mineral resources reach maximization, the overall rate of recovery of Mineral resources reaches 80% to 90%, brings great social benefit, economic interests and environmental benefit to society.
Cast stone mix proportion scheme of the present invention, after each raw material powder process, converting form slurry, condense in injection hole, ore deposit, culvert, 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.By whipping agent, cast stone can be expanded, the space not pouring into cast stone is filled full, simultaneously can not polluted underground water layer and soil property.The cast stone of this flyash, slag and coal gangue comprehensive utilization can reduce the exploitation of former stone, and greatly improve flyash, slag and coal gangue utilize face and utilization ratio, drive the recycling of flyash.The concrete foamer such as aluminium powder and sodium bicarbonate selected by whipping agent in the present invention's formula, preferably aluminium powder, aluminium powder foaming process is stable, foamed time is convenient controls, the time of cast stone foaming condensation, usually at one month to 2 years, is regulated and controled by the proportioning of slag in raw material and gypsum content.
Test through applicant, after iron ore in flyash, slag and coal gangue and other valuable Mineral resources are selected, leave the tailings based on silicon and calcium, be not only and reclaimed its valuable cost, also reduce the iron level in cast stone, the intensity of cast stone can be improved, the effect of the intensity that is improved.
Through applicant's test, the test-results of the present invention's formula is as following table:
The present invention is feasible economically: backfill low raw-material cost, can also reclaim, increased the volume of cast stone, can reduce the consumption of raw material further by foam process 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 [underground hole 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, foaming technique can make each contact surface of pit, tunnel and worked-out section combine closely, particularly top, also can tamp crack, thoroughly can recover the stability of geologic framework.Whole raw material does not have water-soluble poisonous soluble substance polluted underground water body, because it is also by the process in leaching of water-soluble hazardous and noxious substances that the flotation of valuable mineral matter is extracted simultaneously.In addition, there is a large amount of holes in foaming artificial cast stone, there is water-permeable, underground water trend can not be changed.
Environmental-protecting performance is excellent: hole, the ore deposit geology after backfill is stablized, can not polluted underground water, can not change underground water trend, cause new geological problem.
In sum, 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.The safe green reoovery method of reinforcing limit, Mineral resources limit exploitation, comprises the 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, tin ore and other valuable ore resources, 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.
D, geological prospecting is carried out to the minery that mine is being exploited, according to geological condition, flyash tailings 30-70 part, steel 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 are watered and mix well, prepare slurry, injected by pipeline and hole in the hole, ore deposit of exploiting, solidify and obtain cast stone supporter, minery geology is supported, while exploitation, hole, ore deposit is supported, ensure the stable of minery geologic framework, then ore deposit more than around minery is exploited.Described whipping agent is aluminium powder, hydrogen-carbonate inorganic salt, tea saponin or rosined soap.Hydrogen-carbonate inorganic salt comprise the metal-salts such as sodium bicarbonate, saleratus, Magnesium hydrogen carbonate.
Cast stone supporter, according to geologic condition and design needs, can be made as the shape of the various supporter such as arch in cylindricality, door shape or hole, identical ore deposit.
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 2.The safe green reoovery method of reinforcing limit, Mineral resources limit exploitation, comprises the steps:
A, flyash is with slurry, sieve after with slurry, granularity of sieving is 200 orders, 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, tin ore and other valuable ore resources, obtains flyash tailings;
B, by slag abrasive dust, carry out with slurry, cross 200 mesh sieves, carry out magnetic separation, select the iron ore in slag, obtain steel slag tailings;
C, by coal gangue abrasive dust, cross 200 mesh sieves, carry out with slurry, slurry carries out flotation, selects the bauxite in coal gangue, zinc ore, copper mine, molybdenum ore, tin ore and carbon, obtains the coal gangue tailings based on silicon, calcium;
D, geological prospecting is carried out to the minery that mine is being exploited, according to geological condition, be watered mixed well by flyash tailings 40-60 part, steel 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, prepare slurry, injected by pipeline and hole in the hole, ore deposit of exploiting, solidify and obtain cast stone supporter, minery geology is supported, while exploitation, hole, ore deposit is supported, ensure the stable of minery geologic framework, then ore deposit more than around minery is exploited.Described whipping agent is aluminium powder, and the granulometric facies of aluminum powder particle size and each raw material powder are worked as.
Embodiments of the invention 3.The safe green reoovery method of reinforcing limit, Mineral resources limit exploitation, comprises the steps:
A, flyash is with slurry, sieve after with slurry, granularity of sieving is 150 orders, 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, tin ore and other valuable ore resources, obtains flyash tailings;
B, by slag abrasive dust, carry out with slurry, cross 150 mesh sieves, carry out magnetic separation, select the iron ore in slag, obtain steel slag tailings;
C, by coal gangue abrasive dust, cross 150 mesh sieves, carry out with slurry, slurry carries out flotation, selects the bauxite in coal gangue, zinc ore, copper mine, molybdenum ore, tin ore and carbon, obtains the coal gangue tailings based on silicon, calcium;
D, geological prospecting is carried out to the minery that mine is being exploited, according to geological condition, be watered mixed well by flyash tailings 50 parts, steel slag tailings 30 parts, colliery powder tailings 15 parts, 4 parts, lime, terra alba 4 parts, whipping agent 0.0002 part, prepare slurry, injected by pipeline and hole in the hole, ore deposit of exploiting, solidify and obtain cast stone supporter, minery geology is supported, while exploitation, hole, ore deposit is supported, ensure the stable of minery geologic framework, then ore deposit more than around minery is exploited.
Gained cast stone, intensity can reach 150-180kg/cm
2, this intensity is better than general massif surface infrastructure intensity.
Embodiments of the invention 4.The safe green reoovery method of reinforcing limit, Mineral resources limit exploitation, flyash tailings, steel slag tailings and coal gangue tailings is prepared according to above-described embodiment, component meter by weight, be prepared from by flyash tailings 35 parts, steel slag tailings 23 parts, colliery powder tailings 18 parts, 5 parts, lime, terra alba 5 parts, building waste 10 parts, whipping agent 0.0002 part, the granularity of each starting material powder is 240 orders, and whipping agent is aluminium powder.Prepare slurry, injected in the hole, ore deposit of exploiting by pipeline and hole, solidify and obtain cast stone supporter, minery geology is supported, while exploitation, hole, ore deposit is supported, ensure the stable of minery geologic framework, then ore deposit more than around minery is exploited.Experimentally, by condensation, the slag type cast stone obtained, intensity can reach 120-150kg/cm
2.By cast stone, worked-out section geology is supported, and then ore deposit more than around worked-out section is exploited.
Embodiments of the invention 5.Flyash tailings, steel slag tailings and coal gangue tailings is prepared according to above-described embodiment, component meter by weight, cast stone supporter is prepared by flyash tailings 55 parts, steel slag tailings 27 parts, colliery powder tailings 14 parts, 8 parts, lime, terra alba 7 parts, building waste 10 parts and whipping agent 0.0003 part, supporter adopts the domes in tunnel, be passage in the middle of arch support body, minery geology is supported, while exploitation, hole, ore deposit is supported, ensure the stable of minery geologic framework, then ore deposit more than around minery is exploited.The granularity of each starting material powder is 180 orders, and whipping agent is aluminium powder.The cast stone supporter obtained, intensity can reach 110-150kg/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 (6)
1. a safe green reoovery method for Mineral resources limit reinforcing limit exploitation, is characterized in that: comprise the 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;
D, geological prospecting is carried out to the minery that mine is being exploited, according to geological condition, flyash tailings 30-70 part, steel 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 are watered and mix well, prepare slurry, injected by pipeline and hole in the hole, ore deposit of exploiting, solidify and obtain cast stone supporter, minery geology is supported, while exploitation, hole, ore deposit is supported, ensure the stable of minery geologic framework, then ore deposit more than around minery is exploited.
2. the safe green reoovery method of reinforcing limit, Mineral resources limit according to claim 1 exploitation, it is characterized in that: in steps d, described cast stone, component meter by weight, is prepared from by flyash tailings 40-60 part, steel 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.
3. the safe green reoovery method of reinforcing limit, Mineral resources limit according to claim 2 exploitation, is characterized in that: described whipping agent is aluminium powder, hydrogen-carbonate inorganic salt, tea saponin or rosined soap.
4. the safe green reoovery method of reinforcing limit, Mineral resources limit according to claim 3 exploitation, is characterized in that: described whipping agent is aluminium powder.
5. the safe green reoovery method of reinforcing limit, Mineral resources limit according to claim 1 and 2 exploitation, is characterized in that: described cast stone, also adds the building waste residue of 5-15 part.
6. the safe green reoovery method of reinforcing limit, Mineral resources limit according to claim 1 exploitation, is characterized in that: in steps d, and described cast stone supporter is the arch in cylindricality, door shape or hole, identical ore deposit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210304273.6A CN102807388B (en) | 2012-08-24 | 2012-08-24 | Safe and green mining method for simultaneously reinforcing and mining mineral resource |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210304273.6A CN102807388B (en) | 2012-08-24 | 2012-08-24 | Safe and green mining method for simultaneously reinforcing and mining mineral resource |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102807388A CN102807388A (en) | 2012-12-05 |
| CN102807388B true CN102807388B (en) | 2015-03-11 |
Family
ID=47231278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210304273.6A Expired - Fee Related CN102807388B (en) | 2012-08-24 | 2012-08-24 | Safe and green mining method for simultaneously reinforcing and mining mineral resource |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102807388B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110685688B (en) * | 2019-09-27 | 2021-01-01 | 中国矿业大学 | Coal mine surrounding rock control method based on chemical modification |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2009314391B2 (en) * | 2008-10-29 | 2012-08-30 | The Chemours Company Fc, Llc. | Treatment of tailings streams |
-
2012
- 2012-08-24 CN CN201210304273.6A patent/CN102807388B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102807388A (en) | 2012-12-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102155261B (en) | Paste combined filling method utilizing solid wastes of mine | |
| US20200116022A1 (en) | Methods and systems for foam mine fill | |
| CN101792291B (en) | High-water expansion filling material | |
| Khaldoun et al. | Valorization of mining waste and tailings through paste backfilling solution, Imiter operation, Morocco | |
| Wang et al. | Paste-like self-flowing transportation backfilling technology based on coal gangue | |
| WO2017152795A1 (en) | Resource mine repairing method | |
| CN102261262B (en) | High-performance foam mortar filling method for mine stope | |
| CN102775084B (en) | A kind of flyash, slag and utilization of coal gangue Application way | |
| CN105218023A (en) | A kind of drift-sand foam material and preparation method | |
| CN101215976B (en) | Down-hole gangue pump packing system and method | |
| Zhang et al. | Performance of cemented coal gangue backfill | |
| CN102515683B (en) | Filling paste prepared from salt deposit exploitation tail salt and consolidated filling method thereof | |
| CN109734379A (en) | A kind of preparation method of Tailing Paste Filling material | |
| CN107285702A (en) | A kind of filling slurry of colliery doping discarded concrete aggregate | |
| CN102808625A (en) | Method for safely and environmentally mining mineral resource and developing industrial tourism | |
| CN105776911A (en) | Gel material for ultra-fine tailing filling and dry heaping | |
| Qiang et al. | Risk assessment and prevention of surface subsidence under buildings by cemented paste filling and strip mining methods: a case study | |
| Emad et al. | Backfill practices for sublevel stoping system | |
| CN101912866A (en) | Iron tailing solidifying method | |
| CN102775105A (en) | Mine paste filling aggregate prepared from building waste materials and preparation method of mine paste filling aggregate | |
| CN102807388B (en) | Safe and green mining method for simultaneously reinforcing and mining mineral resource | |
| CN102562145B (en) | Dry-type cement filling method realized by aid of extracted tail salt of salt deposit | |
| CN107082604A (en) | A kind of coarse aggregate phosphorus ore cemented filling material defeated applied to big times of spool | |
| CN102795882B (en) | Pit backfill casting stone made from fly ash, steel slag and coal gangue | |
| CN105298539B (en) | Method for preventing and treating waste water pollution of abandoned mine and avoiding water permeation accidents |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150311 Termination date: 20150824 |
|
| EXPY | Termination of patent right or utility model |