CN103833243A - Slag-based whole tailing gravity-flow filling cementing material and filling slurry preparation method thereof - Google Patents
Slag-based whole tailing gravity-flow filling cementing material and filling slurry preparation method thereof Download PDFInfo
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- CN103833243A CN103833243A CN201410009685.6A CN201410009685A CN103833243A CN 103833243 A CN103833243 A CN 103833243A CN 201410009685 A CN201410009685 A CN 201410009685A CN 103833243 A CN103833243 A CN 103833243A
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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Abstract
The invention relates to a slag-based whole tailing gravity-flow filling cementing material and a filling slurry preparation method thereof. Blast furnace slag is used as a main cementing material, and water glass is used as a slag exciting agent, thereby significantly improving the early-stage strength. According to the invention, hemihydrate gypsum is also added, which shortens the cementing time; quicklime is added to realize volume expansion of the slurry after cementation is started, and thus to improve the tight-filling rate of the filling material. Since the solid concentration is increased, the rheological property of the filling material is reduced; the addition of a powdery water reducer can improve the fluidity and reduce the bleeding rate with the proviso that the solid concentration of the filling slurry is maintained to be high, thus the filling slurry is more uniform and gravity-flow filling is realized. With the addition of the high-efficient water reducer and the cooperative use of citric acid and glucose retarders, the pipe blocking phenomenon caused by fluidity loss during whole tailing filling is improved.
Description
Technical field
The present invention relates to a kind of full tailings gravity flow cemented filling material take blast-furnace slag as main raw material.The invention still further relates to the preparation technology of described full tailings gravity flow cemented filling material.
Technical background
Filling method is a kind of important method of the safe and efficient production of underground mine, not only can administer Goaf Area, surface subsidence and the potential safety hazard of avoiding worked-out section to cause, and can improve the rate of extraction, utilize in a large number the mine solid wastes such as mine tailing, alleviate the disadvantageous effect of mine solid waste to environment.
All-tailing cemented filling material be wholegrain level tailings using not classification and not desliming as filling base-material, the cemented filling material forming as jointing compound take cement or other gelling material.All-tailing cemented filling refers to not graded desliming of tailings, and all, as the filling method of filling in mine base-material, for classified tailings filling, technique is more simple, and energy consumption still less, realizes tailings zero release target for mine very important.
The fineness of materials of full tailings is thin, and surface-area is large, thereby the cement consuming is many, or under the condition of identical cement consumption, intensity is low, and in addition, in the loading time of regulation, the fluidity loss of unclassified tailing filling materials slurry is larger, there will be the phenomenon of plugging.At present, make jointing compound for the mine multiplex cement of full tailing cementing material, cause filling cost higher, if adopt the main component of slag as compaction material powder, can significantly reduce the cost of cementing powder, also meet the useless guilding principle of national energy-saving profit.Cementing powder using slag as main component need be selected suitable exciting agent and different component compound uses, to meet the performance requriementss such as the intensity, rheological, time of coagulation of compaction material.
Aspect multi-component tailing cementing material preparation method, current used method be by each component dry respectively, grinding, more proportionally mix, be mixed with tailing cementing material.This method complicated process of preparation, energy consumption is high, and powder fineness is difficult to control.The consolidating material being mixed is unsuitable long time stored, need to join i.e. use, and when component is more, the operation of production and application link is comparatively complicated.
Unclassified tailing filling materials slurry will be realized gravity flow filling, and its solids concn is generally limited in below 70%, and tailings utilization ratio is lower; The tailings filling body early strength forming is low, connects top rate poor; Multi-component consolidating material preparation, comparatively complexity of storage.Therefore, need to there be new technology and method further to study complete tailing-filled consolidating material.
Publication number is preparation and the application method thereof that the Chinese patent of CN101786854A discloses a kind of early-strength type mine tailings backfill tailing cementing material, the obturator early strength that this tailing cementing material forms is fast-growth, but use the main component of aluminosulfate cement as consolidating material, less stable, cost is higher.
Summary of the invention
Positively effect of the present invention is: the present invention, take blast-furnace slag as main consolidating material, adopts water glass as slag exciting agent, has obtained the effect that significantly improves early strength.The present invention also adds semi-hydrated gypsum, has shortened time of coagulation, adds after unslaked lime makes slip start to solidify and follows volumetric expansion, has improved the top rate that connects of compaction material.
In order to achieve the above object, the present invention has adopted following technical scheme.
A kind of full tailings gravity flow cementing filler, is characterized in that being prepared from according to following proportioning and method:
Blast-furnace slag 55% ~ 80%, Portland clinker 5% ~ 15%, semi-hydrated gypsum 5% ~ 10%, dihydrate gypsum 3% ~ 10%, the unslaked lime 3% ~ 10% of CaO content >80%, trolamine 0.01% ~ 0.05%;
Described per-cent is mass percent;
(1), respectively Portland clinker and unslaked lime are crushed to the particle below 5mm;
(2), again by after blast-furnace slag, Portland clinker, semi-hydrated gypsum, dihydrate gypsum and unslaked lime raw material stoving, feeding is put into ball mill in proportion, and adds trolamine to carry out common mill;
(3), when grinding to 30 ~ 60min, survey its Blain specific surface, as Blain specific surface >400m
2when/kg, by consolidating material packing good grinding, sealing is preserved.
The unclassified tailing filling materials slurry of full tailings gravity flow cemented filling material, is prepared from accordance with the following methods:
Described consolidating material is mixed according to the mass ratio of 1:10 with full tailings, add water and in the process of adding water, add water glass, the water reducer of consolidating material 0.3% ~ 2.0% and the retardant of consolidating material 0.01% ~ 0.03% of the modulus >3.5 of consolidating material 0.5% ~ 3%, being made into solids concn and being 50% ~ 75% unclassified tailing filling materials slurry; Described per-cent is mass percent.
The unclassified tailing filling materials slurry of full tailings gravity flow cemented filling material, is characterized in that: described water reducer is any in naphthalene series high-efficiency water-reducing agent, high-efficiency water-reducing agent of poly-carboxylic acid, amino high efficiency water reducing agent and aliphatic high-efficiency water reducing agent.
The unclassified tailing filling materials slurry of full tailings gravity flow cemented filling material, is characterized in that: described retardant is the composition of citric acid and glucose arbitrary proportion.
Positively effect of the present invention is: the present invention, take blast-furnace slag as main consolidating material, adopts water glass as slag exciting agent, has obtained the effect that significantly improves early strength.The present invention also adds semi-hydrated gypsum, has shortened time of coagulation, adds after unslaked lime makes slip start to solidify and follows volumetric expansion, has improved the top rate that connects of compaction material.
Owing to improving after solids concn, compaction material rheological property reduces, and adds powder water reducer and can guarantee in the situation that filling paste solids concn is higher, improve its mobility, reduce bleeding rate, make obturator slurry more even, thereby still realize gravity flow filling.Add after high efficiency water reducing agent, be used in conjunction with citric acid and glucose retardant, improved the full plugging phenomenon causing due to fluidity loss when tailing-filled.
The present invention adopts the main raw materials such as slag, cement, dihydrate gypsum, semi-hydrated gypsum and lime to put into ball mill and count a certain amount of trolamine grinding aid and carries out combined grinding, to specific surface area >400m
2/ kg.Because grog is different with slag grindability, in same grinding machine when combined grinding, when cement clinker grinding is during to the fineness of regulation, the particle of slag is still thicker, and its lateral reactivity is difficult to performance.For head it off, consolidating material of the present invention adds trolamine grinding aid in the time of common mill, can prevent the generation of reuniting, the surface hardness that reduces solid particulate by wetting and adsorption is conducive to grain breakage, adding of trolamine increases material fluidity, thereby increased the interaction between pellet, improved grinding speed, mixing of trolamine can be carried out chemical modification to material simultaneously.In addition, the dihydrate gypsum in this aspect consolidating material not only can be used as slag exciting agent increases the intensity of tailings filling body, and also can serve as grinding aid in grinding process, the grinding fineness that can obtain being more satisfied with and shortening grinding time.Therefore, when cementing mixing material is levigate to specific surface area >400m
2when/kg, grinding time is shorter, and slag and cement all can brings into play good activity.
Embodiment
Below in conjunction with example, the present invention is described in further detail.
Embodiment 1: the preparation example one of full tailings gravity flow cementing filler
69.97 parts of blast-furnace slags, 15 parts of Portland clinkers, 9 parts of semi-hydrated gypsums (being plaster of Paris), 3 parts of dihydrate gypsums, 3 parts of the unslaked limes of CaO content >80%, 0.03% part of trolamine.
According to said ratio, raw material is mixed, put into ball mill, grinding 60min, surveying its specific surface area is 433m
2/ kg.
Finally, by consolidating material packing good grinding, sealing is preserved.
Embodiment 2: the preparation example two of full tailings gravity flow cementing filler
59.96 parts of blast-furnace slags, 15 parts of Portland clinkers, 5 parts of semi-hydrated gypsums (being plaster of Paris), 10 parts of dihydrate gypsums, 10 parts of the unslaked limes of CaO content >80%, 0.04% part of trolamine.
According to said ratio, raw material is mixed, put into ball mill, grinding 50min, surveying its specific surface area is 425m
2/ kg.
Finally, by consolidating material packing good grinding, sealing is preserved.
Embodiment 3: the preparation example three of full tailings gravity flow cementing filler
78.95 parts of blast-furnace slags, 5 parts of Portland clinkers, 6 parts of semi-hydrated gypsums (being plaster of Paris), 5 parts of dihydrate gypsums, 5 parts of the unslaked limes of CaO content >80%, 0.05% part of trolamine.
According to said ratio, raw material is mixed, put into ball mill, grinding 30min, surveying its specific surface area is 407m
2/ kg.
Finally, by consolidating material packing good grinding, sealing is preserved.
Embodiment 4: unclassified tailing filling materials slurry preparation example one
Consolidating material prepared by embodiment mono-mixes according to the mass ratio of 1:10 with full tailings, add water and in the process of adding water, add the water glass of the modulus >3.5 of consolidating material quality 0.5%, naphthalene series high-efficiency water-reducing agent, the citric acid of consolidating material quality 0.01% and the glucose of consolidating material quality 0.02% of consolidating material quality 0.5%, being made into solid masses concentration and being 72% unclassified tailing filling materials slurry.
Fluidity loss, the moulding intensity of 3d, 7d, 28d later of surveying respectively unclassified tailing filling materials slurry, the results are shown in Table 1.
Table 1
| Cement-sand ratio | Concentration | 60min fluidity loss | 3d intensity (MPa) | 7d intensity (MPa) | 28d intensity (MPa) |
| 1:10 | 72% | Do not lose | 1.05 | 2.20 | 3.56 |
Embodiment 5: unclassified tailing filling materials slurry preparation example two
Consolidating material prepared by embodiment mono-mixes according to the mass ratio of 1:10 with full tailings, add water and in the process of adding water, add the water glass of the modulus >3.5 of consolidating material quality 2.0%, high-efficiency water-reducing agent of poly-carboxylic acid, the citric acid of consolidating material quality 0.02% and the glucose of consolidating material quality 0.01% of consolidating material quality 2.0%, being made into solid masses concentration and being 70% unclassified tailing filling materials slurry.
Produce consolidating material: cement-sand ratio is 1:10, solids concn is 72%, and preparation unclassified tailing filling materials slurry adds water glass 0.5%, naphthalene series high-efficiency water-reducing agent 0.5%, citric acid 0.02%, glucose 0.02% in the process of adding water.Stir and make unclassified tailing filling materials slurry.
Fluidity loss, the moulding intensity of 3d, 7d, 28d later of surveying respectively unclassified tailing filling materials slurry, the results are shown in Table 2.
Table 2
| Cement-sand ratio | Concentration | 60min fluidity loss | 3d intensity (MPa) | 7d intensity (MPa) | 28d intensity (MPa) |
| 1:10 | 70% | Do not lose | 0.73 | 1.78 | 2.98 |
Embodiment 6: unclassified tailing filling materials slurry preparation example three
Consolidating material prepared by embodiment mono-mixes according to the mass ratio of 1:10 with full tailings, add water and in the process of adding water, add the water glass of the modulus >3.5 of consolidating material quality 3.0%, amino high efficiency water reducing agent, the citric acid of consolidating material quality 0.005% and the glucose of consolidating material quality 0.005% of consolidating material quality 1.0%, being made into solid masses concentration and being 71% unclassified tailing filling materials slurry.
Produce consolidating material: cement-sand ratio is 1:10, solids concn is 72%, and preparation unclassified tailing filling materials slurry adds water glass 0.5%, naphthalene series high-efficiency water-reducing agent 0.5%, citric acid 0.02%, glucose 0.02% in the process of adding water.Stir and make unclassified tailing filling materials slurry.
Fluidity loss, the moulding intensity of 3d, 7d, 28d later of surveying respectively unclassified tailing filling materials slurry, the results are shown in Table 3.
Table 3
| Cement-sand ratio | Concentration | 60min fluidity loss | 3d intensity (MPa) | 7d intensity (MPa) | 28d intensity (MPa) |
| 1:10 | 71% | Do not lose | 0.89 | 1.96 | 3.12 |
Described part is mass parts.
Claims (4)
1. a full tailings gravity flow cementing filler, is characterized in that being prepared from according to following proportioning and method:
Blast-furnace slag 55% ~ 80%, Portland clinker 5% ~ 15%, semi-hydrated gypsum 5% ~ 10%, dihydrate gypsum 3% ~ 10%, the unslaked lime 3% ~ 10% of CaO content >80%, trolamine 0.01% ~ 0.05%;
Described per-cent is mass percent;
(1), respectively Portland clinker and unslaked lime are crushed to the particle below 5mm;
(2), again by after blast-furnace slag, Portland clinker, semi-hydrated gypsum, dihydrate gypsum and unslaked lime raw material stoving, feeding is put into ball mill in proportion, and adds trolamine to carry out common mill;
(3), when grinding to 30 ~ 60min, survey its Blain specific surface, as Blain specific surface >400m
2when/kg, by consolidating material packing good grinding, sealing is preserved.
2. the unclassified tailing filling materials slurry that contains full tailings gravity flow cemented filling material claimed in claim 1, is characterized in that being prepared from accordance with the following methods:
Described consolidating material is mixed according to the mass ratio of 1:10 with full tailings, add water and in the process of adding water, add water glass, the water reducer of consolidating material 0.3% ~ 2.0% and the retardant of consolidating material 0.01% ~ 0.03% of the modulus >3.5 of consolidating material 0.5% ~ 3%, being made into solids concn and being 50% ~ 75% unclassified tailing filling materials slurry; Described per-cent is mass percent.
3. the unclassified tailing filling materials slurry of full tailings gravity flow cemented filling material as claimed in claim 2, is characterized in that: described water reducer is any in naphthalene series high-efficiency water-reducing agent, high-efficiency water-reducing agent of poly-carboxylic acid, amino high efficiency water reducing agent and aliphatic high-efficiency water reducing agent.
4. the unclassified tailing filling materials slurry of full tailings gravity flow cemented filling material as claimed in claim 2, is characterized in that: described retardant is the composition of citric acid and glucose arbitrary proportion.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104909677A (en) * | 2015-05-27 | 2015-09-16 | 葛洲坝中固科技股份有限公司 | Silicon-aluminum-based tailings cementing agent for mine filling, and preparation method thereof |
| CN105040900A (en) * | 2015-07-02 | 2015-11-11 | 济南大学 | Sandwiched composite light partition wall batten and manufacturing method thereof |
| CN105503116A (en) * | 2016-01-21 | 2016-04-20 | 长沙有色冶金设计研究院有限公司 | Cemented filling material |
| CN105776911A (en) * | 2016-02-26 | 2016-07-20 | 中钢集团马鞍山矿山研究院有限公司 | Gel material for ultra-fine tailing filling and dry heaping |
| 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 |
| CN107725106A (en) * | 2017-11-21 | 2018-02-23 | 铜陵有色金属集团股份有限公司 | A kind of method and its application for strengthening tailings mobility |
| CN108266223A (en) * | 2017-12-15 | 2018-07-10 | 中国华冶科工集团有限公司 | The method that high-sulfur tailings prepares filling in mine material with Gobi aggregate |
| CN109265041A (en) * | 2018-10-16 | 2019-01-25 | 上海明氏建材有限公司 | A kind of high activity slag powders and its preparation process |
| CN110563354A (en) * | 2019-08-19 | 2019-12-13 | 西北矿冶研究院 | Mine full-tailings cementing material |
| CN113307589A (en) * | 2021-06-08 | 2021-08-27 | 福建马坑矿业股份有限公司 | High-performance filling cementing material and preparation method thereof |
| CN113636797A (en) * | 2021-07-30 | 2021-11-12 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | Composite filling material and preparation method thereof |
| CN113800859A (en) * | 2021-10-22 | 2021-12-17 | 山东安实绿色开采技术发展有限公司 | Special cementing powder for full-tailings cementing filling and preparation method thereof |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104909677B (en) * | 2015-05-27 | 2018-03-23 | 葛洲坝中固科技股份有限公司 | A kind of filling in mine sial base tailings cementing agent and preparation method thereof |
| CN104909677A (en) * | 2015-05-27 | 2015-09-16 | 葛洲坝中固科技股份有限公司 | Silicon-aluminum-based tailings cementing agent for mine filling, and preparation method thereof |
| CN105040900A (en) * | 2015-07-02 | 2015-11-11 | 济南大学 | Sandwiched composite light partition wall batten and manufacturing 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 |
| 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 |
| CN105503116A (en) * | 2016-01-21 | 2016-04-20 | 长沙有色冶金设计研究院有限公司 | Cemented filling material |
| CN105776911A (en) * | 2016-02-26 | 2016-07-20 | 中钢集团马鞍山矿山研究院有限公司 | Gel material for ultra-fine tailing filling and dry heaping |
| CN107725106A (en) * | 2017-11-21 | 2018-02-23 | 铜陵有色金属集团股份有限公司 | A kind of method and its application for strengthening tailings mobility |
| CN108266223A (en) * | 2017-12-15 | 2018-07-10 | 中国华冶科工集团有限公司 | The method that high-sulfur tailings prepares filling in mine material with Gobi aggregate |
| CN109265041A (en) * | 2018-10-16 | 2019-01-25 | 上海明氏建材有限公司 | A kind of high activity slag powders and its preparation process |
| CN110563354A (en) * | 2019-08-19 | 2019-12-13 | 西北矿冶研究院 | Mine full-tailings cementing material |
| CN113307589A (en) * | 2021-06-08 | 2021-08-27 | 福建马坑矿业股份有限公司 | High-performance filling cementing material and preparation method thereof |
| CN113307589B (en) * | 2021-06-08 | 2022-11-08 | 福建马坑矿业股份有限公司 | High-performance filling cementing material and preparation method thereof |
| CN113636797A (en) * | 2021-07-30 | 2021-11-12 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | Composite filling material and preparation method thereof |
| CN113800859A (en) * | 2021-10-22 | 2021-12-17 | 山东安实绿色开采技术发展有限公司 | Special cementing powder for full-tailings cementing filling and preparation method thereof |
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Application publication date: 20140604 |