CN102887693A - Filling and consolidating powder for mining purposes and use thereof - Google Patents
Filling and consolidating powder for mining purposes and use thereof Download PDFInfo
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Abstract
The invention discloses filling and consolidating powder for mining purposes and a use thereof. The filling and consolidating powder comprises the following raw materials in percentage by weight: 3-5% of portland cement clinker, 8-10% of metakaolin, 5-15% of carbide slag, 18-24% of phosphogypsum, 18-22% of fly ash, 9-14% of red mud, 15-19% of blast furnace slag, 4-10% of limestone, 0.8-1.2% of polycarboxylic acid type water reducing agent and 0.4-0.7% of sodium hydroxide and is prepared by uniformly mixing and grinding to get fine powder with 400 meshes-600 meshes. When the filling and consolidating powder is used, mining tailing or coal gangue is firstly mixed with water according to a proportion in a mixing machine for forming uniform slurry, and then the consolidating powder is further added, uniformly mixed and then conveyed to a downhole place by a pipeline for filling. The cost of the filling material blended by the consolidating powder disclosed by the invention is 50-70 yuan/ton, while the cost of the similar filling and consolidating powder is 90-110 yuan/ton; and compared with the prior art, the cost is greatly reduced and the filling effect is good.
Description
Technical field
The present invention relates to the cementing material that filling is used, especially the mine comprises the gelling material that colliery and metal mine goaf filling are used.
Background technology
Along with the development of national economy, mining industry is also developing rapidly, still, after mining mineral resource finishes, can form a large amount of worked-out sections underground, causes a large amount of potential safety hazards for country and people.At present, filling in mine is a desirable approach that solves the worked-out section, and in the filling in mine technique, cementing filler plays critical effect.In traditional filling process, used cementing filler mainly is cement.But when using cement as consolidating material, have following problem: the poor fluidity of mixture during filling, early strength are low, cost is high, be difficult to satisfy the demand of underground filling, especially because the needs that pipeline is carried, the aggregate that underground filling is used mostly is particulate, and cement can't be brought into play due effect.Also there is Introduction of Literatures to use high-water material as the filling solidifying agent, although high-water material has overcome some deficiency of cement cementing material, improved the modification scope of cement-sand ratio, need not dewater, but because filling process is complicated, cost is high, obturator has the bleed phenomenon, fails so far to be widely used.
Because the underground filling material usage is very large, therefore compaction material is required to have preferably flowability, certain early strength, obturator can not have the bleed phenomenon, and cost can not be too high; But the consolidating material of selling in the market is with low cost, and early strength is also low; Early strength is high, and flowability is poor on the contrary; If early strength is high and flowability can both satisfy the filling requirement, cost will improve greatly; In addition, as the cementing material that filling is used, require not dewater when filling, otherwise cause easily that in course of conveying transport pipe stops up, filling effect is also poor.Therefore, seek a kind of good fluidity, early strength is high, cost is low, the cementing filler that do not dewater during filling is be eager for a long time technical problems that solve of those skilled in the art always.
China Patent Publication No. CN1500762A(application number 02135821.4) a kind of single plasm glue jointed filling material and using method thereof are disclosed, it is by the quick hardening sulphoaluminate grog, phosphogypsum, unslaked lime, wilkinite and slag form according to the proportioning combined grinding, the quick hardening sulphoaluminate grog accounts for 15-25%, the quick hardening sulphoaluminate grog that the cemented filling material that this method is produced adds is more, although early strength is higher, but, because quick hardening sulphoaluminate grog price is higher, and the mixing proportion of this consolidating material and CHARACTERISTICS OF TAILINGS SAND only is 1:(3～5), so this cemented filling material cost is higher, filling cost is also higher.
China Patent Publication No. CN102241493A(application number 201110098060.8) a kind of pit backfilling material and preparation and application thereof are disclosed.This backfill is comprised of 100 parts of cement, 200～400 parts of Calcined Activate Coal Gangues, 100～250 parts of steel-making slag powder, 15～50 parts of slaked lime powders, 35～90 parts of phosphogypsums, 20～80 parts of swelling agents, 50～150 parts of hyaline-quartz sand mine tailings, 4000～14000 parts of Machine-made Sands, 1.5～3.5 parts of water reducers, 0.1～1.0 part of treated starch ether.This technology, so water-retentivity and cohesiveness are better but because the calcining and activating temperature of its described Calcined Activate Coal Gangue is 750～900 ℃, needs to consume than multiple-energy-source owing to having added poly carboxylic acid series water reducer and treated starch ether, and the course of processing is also comparatively loaded down with trivial details.And, on the low side in the stopping composition early strength that this ratio is mixed, affect operating efficiency.
China Patent Publication No. CN102190469A(application number 201010119043.3) disclose a kind of Novel tailing consolidator and preparation method thereof, it is the Na by 9%～17.54% Portland clinker, 6%～10% unslaked lime, 0.2 ‰～6 ‰
2SO
4, 0.2 ‰～0.5 ‰ Walocel MT 20.000PV, 5%～10% flyash, 43.65%～69.96% blast-furnace cinder micro-powder make through ball mill grinding and form.This utilization more Portland clinker, although early strength is high, cost is also thereupon higher, with mobile relatively poor after the mine tailing blending.
In a word, the existing disclosed filling cementing material of document all can't reach good fluidity, early strength is high, cost is low purpose simultaneously.
Summary of the invention
In order to overcome the defective of prior art, the fixed powder of filler for mine that the invention provides a kind of good fluidity, early strength is high, cost is low, does not dewater during filling.
In order to achieve the above object, the technical scheme taked of the present invention is:
The fixed powder of a kind of filler for mine, it is evenly to be mixed by described weight percent and grinding to 400 order～600 orders and the fine powder that makes by following raw material:
Portland clinker 3～5%; Metakaolin 8～10%; Carbide slag 5～15%; Phosphogypsum 18～24%; Flyash 18～22%; Red mud 9～14%; Blast-furnace slag 15～19%; Wingdale 4～10%; Polycarboxylic acids dehydragent 0.8～1.2%; Sodium hydroxide 0.4～0.7%.
Component of the present invention is commercially available prod or industrial waste, wherein:
Described metakaolin is take kaolin as raw material, the amorphous aluminum silicate that under 600～900 ℃ of temperature, forms through dehydration, and market is on sale;
Described carbide slag is the waste residue take calcium hydroxide as main component after acetylene gas is obtained in the calcium carbide hydrolysis;
Described flyash is the powder of collecting from the coal-powder boiler flue gas;
The waste residue of discharging when described red mud is Aluminium industry extraction aluminum oxide;
Described blast-furnace slag is when the blast-furnace smelting pig iron, the melts take silicate and silico-aluminate as main component of gained, the slag that forms behind the quenching granulating;
Described sodium hydroxide is technical grade sodium hydroxide.
The production method of fixed powder of the present invention is: elder generation is accurate weighing cement clinker, blast-furnace slag and Wingdale in proportion, dropping into grinding in ball grinder to fineness is 300 orders, and again all the other materials accurately being dropped into grinding in ball grinder to fineness after the weighing in proportion is that 400～600 orders get final product.
The application method of fixed powder of the present invention in the metal mine filling process is: will dig up mine first tailings and water are mixed into distributed slurry in proportion in mixing machine, add again fixed powder, the part by weight of fixed powder and tailings is 1:(6～12), the water yield that adds should make pulp density be controlled at 60%～80%(weight ratio), after mixing, by pumping or gravity this slip is transported to underground filling through piping and gets final product.
After testing: this fixed powder mixes by the 1:10 weight ratio with tailings, and when pulp density was 71%, the presetting period of compaction material was 3～4 hours, and final setting time is 5～6 hours, and the diffusibleness of slip is greater than 160mm, and ultimate compression strength was greater than 1.55MPa in 7 days.
The application method of fixed powder of the present invention in coal mine filling technique is: first coal gangue is crushed to median size about 1.5mm, and maximum particle diameter is no more than 5mm, then colliery powder and water are mixed into distributed slurry in proportion in mixing machine, add again fixed powder, the part by weight of fixed powder and colliery powder is 1:(6～12), the water yield that adds should make pulp density be controlled at 60%～80%(weight ratio), after mixing, by pumping or gravity this slip is transported to underground filling through piping and gets final product.
After testing: this fixed powder mixes by the 1:10 weight ratio with colliery powder, and when pulp density was 68%, the presetting period of compaction material was 3～4 hours, and final setting time is 5～6 hours, and the diffusibleness of slip is greater than 150mm, and ultimate compression strength was greater than 1.45MPa in 7 days.
Fixed powder of the present invention also can be used on the fields such as Road construction, grouting, worked-out section leak stopping, fire extinguishing be fire-retardant except being used for metal mine and coal mine filling.
There are following three advantages in fixed powder of the present invention:
1, in the fixed powder of the present invention, the addition of cement clinker only accounts for 3～5%, and utilized a large amount of industrial residues, so cost is lower, they if the technical feature that reaches 2MPa by 28 days ultimate compression strength of filling slurry is benchmark, be 50～70 yuan with the compaction material per ton cost of the fixed powder mix of the present invention, and the fixed powder cost of similar filling is at 90～110 yuan/tons, with respect to prior art, cost reduces greatly.
2, under alkaline environment, metakaolin and slag can react and generate the metakaolin-slag based geopolymer, because formation and the dehydration reaction velocity ratio of colloidal sol are very fast in the reaction process, the network skeleton ratio is easier to form, so early strength is higher.More stable because of the geopolymer network structure again, so its later strength is also higher, weather resistance is good.
Although 3, low, the good fluidity of the present invention's cost, therefore intensity do not reduce, in fixed powder and CHARACTERISTICS OF TAILINGS SAND in 1:10 ratio even blend after, after testing, 7 days ultimate compression strength reaches 1.64MPa, meets the requirement of compaction material fully.
When 4, the present invention was as coal mine retrofilling material, Strength of backfill was high, and particularly early strength is high, easily connect the top, the effectiveness of roof control is good, does not dewater during owing to filling, so can not bring pollution problem, pipeline is easily carried, pipe loss is little, and casting resin can not need classification, during filling surrounding rock supporting is made good use of, stope adopts that to fill alternately the time short, and efficiency is high.
Embodiment
Below by four embodiment further specify technical scheme of the present invention with and application in colliery and metal mine filling.
Wherein embodiment one and embodiment two are the application examples in the metal mine filling engineering, and embodiment three and embodiment four are the application examples in the coal mine filling engineering.
Embodiment one
The proportioning (weight) of each component is in the fixed powder of the present invention:
Cement clinker 4%; Metakaolin 9%; Carbide slag 8%; Phosphogypsum 22%; Flyash 20%; Red mud 12%; Blast-furnace slag 16.5%; Wingdale 7%; Water reducer 1%; Sodium hydroxide 0.5%.
Production method is, first in proportion accurately weighing cement clinker, blast-furnace slag and Wingdale, and dropping into grinding in ball grinder to fineness is 300 orders, again all the other materials accurately being dropped into grinding in ball grinder to fineness after the weighing in proportion is that 400～600 orders get final product.
During the preparation filling slurry, the tailings of will digging up mine first is mixed in proportion into distributed slurry with water, add again fixed powder, the ratio of fixed powder and tailings is 1:(6～12), pulp density is controlled at 60%～80%, after in mixing machine, mixing, by pumping or gravity this slip is transported to the down-hole through piping and gets final product.
Following table one be embodiment one fixed powder and tailings by 1:8,1:10, the metal mine compaction material quantitative measurement results that form after three kinds of part by weight of 1:12 mix.
Table one
Embodiment two
The proportioning (weight) of each component is in the fixed powder of the present invention:
Cement clinker 5%; Metakaolin 10%; Carbide slag 6%; Phosphogypsum 24%; Flyash 19%; Red mud 9%; Blast-furnace slag 18.5%; Wingdale 7%; Water reducer 1%, sodium hydroxide 0.5%.
The production method of embodiment two and compaction material preparation method see embodiment one, are not described in detail in this.
Following table two be embodiment two fixed powder and tailings by 1:8,1:10, the metal mine compaction material quantitative measurement results that form after three kinds of part by weight of 1:12 mix.
Table two
Embodiment three
The proportioning (weight) of each component is in the fixed powder of the present invention:
Cement clinker 3%; Metakaolin 9%; Carbide slag 14%; Phosphogypsum 20%; Flyash 18%; Red mud 12%; Blast-furnace slag 18.3%; Wingdale 4%; Water reducer 1%, sodium hydroxide 0.7%.
The preparation method is, first in proportion accurately weighing cement clinker, blast-furnace slag and Wingdale, and dropping into grinding in ball grinder to fineness is 300 orders, again all the other materials accurately being dropped into grinding in ball grinder to fineness after the weighing in proportion is that the 400-600 order gets final product.
During preparation coal mine filling slip, first coal gangue being crushed to median size is 1.5mm, and maximum particle diameter does not allow to surpass 5mm, colliery powder is mixed in proportion into distributed slurry with water, add fixed powder, the ratio of fixed powder and colliery powder is 1:(6～12 again), pulp density is controlled at 60%～80%, after in mixing machine, mixing, by pumping or gravity this slip is transported to the down-hole through piping and gets final product.
Following table three be embodiment three fixed powder and colliery powder by 1:8,1:10, the coal mine retrofilling material physical property test results that form after three kinds of ratios of 1:12 are mixed.
Table three
Embodiment four
The proportioning (weight) of each component is in the fixed powder of the present invention:
Cement clinker 3%; Metakaolin 8%; Carbide slag 10%; Phosphogypsum 22%; Flyash 20%; Red mud 12%; Blast-furnace slag 16.5%; Wingdale 7%; Water reducer 1%, sodium hydroxide 0.5%.
The production method of embodiment four and compaction material preparation method see embodiment three, are not described in detail in this.
Following table four be embodiment four fixed powder and colliery powder by 1:8,1:10, the coal mine retrofilling material physical property test results that form after three kinds of ratios of 1:12 are mixed.
Table four
Claims (8)
1. the fixed powder of filler for mine is characterized in that, it is evenly to be mixed by described weight percent and grinding to 400 order～600 orders and the fine powder that makes by following raw material:
Portland clinker 3～5%; Metakaolin 8～10%; Carbide slag 5～15%; Phosphogypsum 18～24%; Flyash 18～22%; Red mud 9～14%; Blast-furnace slag 15～19%; Wingdale 4～10%; Polycarboxylic acids dehydragent 0.8～1.2%; Sodium hydroxide 0.4～0.7%.
2. the fixed powder of filler for mine as claimed in claim 1 is characterized in that, described each proportioning raw materials is: Portland clinker 4%; Metakaolin 9%; Carbide slag 8%; Phosphogypsum 22%; Flyash 20%; Red mud 12%; Blast-furnace slag 16.5%; Wingdale 7%; Polycarboxylic acids dehydragent 1%; Sodium hydroxide 0.5%.
3. the fixed powder of filler for mine as claimed in claim 1 is characterized in that, described each proportioning raw materials is: Portland clinker 5%; Metakaolin 10%; Carbide slag 6%; Phosphogypsum 24%; Flyash 19%; Red mud 9%; Blast-furnace slag 18.5%; Wingdale 7%; Polycarboxylic acids dehydragent 1%, sodium hydroxide 0.5%.
4. the fixed powder of filler for mine as claimed in claim 1 is characterized in that, described each proportioning raw materials is: Portland clinker 3%; Metakaolin 9%; Carbide slag 14%; Phosphogypsum 20%; Flyash 18%; Red mud 12%; Blast-furnace slag 18.3%; Wingdale 4%; Polycarboxylic acids dehydragent 1%, sodium hydroxide 0.7%.
5. the fixed powder of filler for mine as claimed in claim 1 is characterized in that, described each proportioning raw materials is: Portland clinker 3%; Metakaolin 8%; Carbide slag 10%; Phosphogypsum 22%; Flyash 20%; Red mud 12%; Blast-furnace slag 16.5%; Wingdale 7%; Polycarboxylic acids dehydragent 1%, sodium hydroxide 0.5%.
6. such as the production method of the fixed powder of the arbitrary described filler for mine of claim 1-5, it is characterized in that, elder generation is accurate weighing cement clinker, blast-furnace slag and Wingdale in proportion, dropping into grinding in ball grinder to fineness is 300 orders, and again all the other materials accurately being dropped into grinding in ball grinder to fineness after the weighing in proportion is that 400～600 orders get final product.
7. such as the arbitrary described application method of fixed powder in the metal mine filling process of claim 1-3, it is characterized in that, to dig up mine first tailings and water is mixed into distributed slurry in proportion in mixing machine, add again fixed powder, the part by weight of fixed powder and tailings is 1:(6～12), the water yield that adds should make pulp density be controlled at 60%～80% weight ratio, after mixing, by pumping or gravity this slip is transported to underground filling through piping and gets final product.
8. such as claim 1 or the 4 or 5 described application methodes of fixed powder in coal mine filling technique, it is characterized in that, first coal gangue is crushed to median size about 1.5mm, and maximum particle diameter is no more than 5mm, then colliery powder and water are mixed into distributed slurry in proportion in mixing machine, add again fixed powder, the part by weight of fixed powder and colliery powder is 1:(6～12), the water yield that adds should make pulp density be controlled at 60%～80% weight ratio, after mixing, by pumping or gravity this slip is transported to underground filling through piping and gets final product.
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103553529A (en) * | 2013-10-24 | 2014-02-05 | 郑州大学 | Early strength compound admixture for full mill tailing pasty fluid cemented filling material |
| CN104016635A (en) * | 2014-05-30 | 2014-09-03 | 山东安实绿色开采技术发展有限公司 | Filling material used for mining remained gateway along goafs |
| CN106738351A (en) * | 2016-12-15 | 2017-05-31 | 贾晓阳 | A kind of new mixed material manufacturing process |
| CN106915941A (en) * | 2015-12-24 | 2017-07-04 | 贵州川恒化工股份有限公司 | Half water ardealite mine filling material and preparation method thereof |
| CN107628789A (en) * | 2017-09-25 | 2018-01-26 | 常州西夏墅东方工具有限公司 | A kind of preparation method of fast solidifying soft rock injecting paste material |
| CN107857547A (en) * | 2017-12-05 | 2018-03-30 | 山西工程技术学院 | A kind of red mud sill for goaf filling |
| CN108101484A (en) * | 2017-12-26 | 2018-06-01 | 山西工程技术学院 | / structures reinforcement material is built in a kind of underground |
| CN108180037A (en) * | 2018-01-10 | 2018-06-19 | 武汉钢铁集团湖北华中重型机械制造有限公司 | A kind of new process for consolidating powder using grinding machine filling glue |
| CN110776279A (en) * | 2019-11-22 | 2020-02-11 | 山西省交通科技研发有限公司 | Base polymer of fly ash, furnace bottom slag and water-rich carbide slag and preparation method thereof |
| CN111848014A (en) * | 2020-07-06 | 2020-10-30 | 深圳市深建混凝土有限公司 | Green high-performance concrete and preparation method thereof |
| CN113187543A (en) * | 2021-05-28 | 2021-07-30 | 金川镍钴研究设计院有限责任公司 | Cemented filling method using waste rock machine-made sand as aggregate |
| CN113321468A (en) * | 2021-06-11 | 2021-08-31 | 北京中煤矿山工程有限公司 | Coal gangue cemented filling material and high-fluidity high-solid-content cemented filling material slurry |
| CN113493317A (en) * | 2020-04-03 | 2021-10-12 | 张延年 | Portland cement clinker prepared from multiple solid wastes and preparation method thereof |
| CN113548865A (en) * | 2021-08-26 | 2021-10-26 | 中国矿业大学 | Fractal gangue cemented filling material and preparation method thereof |
| CN113638767A (en) * | 2021-08-18 | 2021-11-12 | 山西云泉岩土工程科技股份有限公司 | Economical and environment-friendly goaf filling method and filling device thereof |
| CN117623687A (en) * | 2023-11-20 | 2024-03-01 | 中交一公局集团有限公司 | Filling material for goaf of steeply inclined coal seam and preparation method thereof |
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Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103553529A (en) * | 2013-10-24 | 2014-02-05 | 郑州大学 | Early strength compound admixture for full mill tailing pasty fluid cemented filling material |
| CN104016635A (en) * | 2014-05-30 | 2014-09-03 | 山东安实绿色开采技术发展有限公司 | Filling material used for mining remained gateway along goafs |
| CN104016635B (en) * | 2014-05-30 | 2016-01-27 | 山东安实绿色开采技术发展有限公司 | A kind of mining gob-side entry retaining compaction material |
| CN106915941A (en) * | 2015-12-24 | 2017-07-04 | 贵州川恒化工股份有限公司 | Half water ardealite mine filling material and preparation method thereof |
| CN106915941B (en) * | 2015-12-24 | 2019-11-19 | 贵州川恒化工股份有限公司 | Half water ardealite mine filling material and preparation method thereof |
| CN106738351A (en) * | 2016-12-15 | 2017-05-31 | 贾晓阳 | A kind of new mixed material manufacturing process |
| CN107628789B (en) * | 2017-09-25 | 2020-08-11 | 嘉兴晟源工业设计有限公司 | Preparation method of fast-setting soft rock grouting material |
| CN107628789A (en) * | 2017-09-25 | 2018-01-26 | 常州西夏墅东方工具有限公司 | A kind of preparation method of fast solidifying soft rock injecting paste material |
| CN107857547A (en) * | 2017-12-05 | 2018-03-30 | 山西工程技术学院 | A kind of red mud sill for goaf filling |
| CN108101484A (en) * | 2017-12-26 | 2018-06-01 | 山西工程技术学院 | / structures reinforcement material is built in a kind of underground |
| CN108180037A (en) * | 2018-01-10 | 2018-06-19 | 武汉钢铁集团湖北华中重型机械制造有限公司 | A kind of new process for consolidating powder using grinding machine filling glue |
| CN110776279A (en) * | 2019-11-22 | 2020-02-11 | 山西省交通科技研发有限公司 | Base polymer of fly ash, furnace bottom slag and water-rich carbide slag and preparation method thereof |
| CN110776279B (en) * | 2019-11-22 | 2021-10-15 | 山西省交通科技研发有限公司 | Base polymer of fly ash, furnace bottom slag and water-rich carbide slag and preparation method thereof |
| CN113493317A (en) * | 2020-04-03 | 2021-10-12 | 张延年 | Portland cement clinker prepared from multiple solid wastes and preparation method thereof |
| CN111848014A (en) * | 2020-07-06 | 2020-10-30 | 深圳市深建混凝土有限公司 | Green high-performance concrete and preparation method thereof |
| CN113187543A (en) * | 2021-05-28 | 2021-07-30 | 金川镍钴研究设计院有限责任公司 | Cemented filling method using waste rock machine-made sand as aggregate |
| CN113187543B (en) * | 2021-05-28 | 2023-09-05 | 金川镍钴研究设计院有限责任公司 | Cemented filling method using waste stone machine-made sand as aggregate |
| CN113321468A (en) * | 2021-06-11 | 2021-08-31 | 北京中煤矿山工程有限公司 | Coal gangue cemented filling material and high-fluidity high-solid-content cemented filling material slurry |
| CN113638767A (en) * | 2021-08-18 | 2021-11-12 | 山西云泉岩土工程科技股份有限公司 | Economical and environment-friendly goaf filling method and filling device thereof |
| CN113548865A (en) * | 2021-08-26 | 2021-10-26 | 中国矿业大学 | Fractal gangue cemented filling material and preparation method thereof |
| CN117623687A (en) * | 2023-11-20 | 2024-03-01 | 中交一公局集团有限公司 | Filling material for goaf of steeply inclined coal seam and preparation method thereof |
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