CN103953389B - A kind of carnallite type potash salt ore goaf filling method containing tachydrite layer - Google Patents
A kind of carnallite type potash salt ore goaf filling method containing tachydrite layer Download PDFInfo
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- CN103953389B CN103953389B CN201410159973.XA CN201410159973A CN103953389B CN 103953389 B CN103953389 B CN 103953389B CN 201410159973 A CN201410159973 A CN 201410159973A CN 103953389 B CN103953389 B CN 103953389B
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- carnallite
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- tachydrite
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Abstract
The invention discloses a kind of carnallite type potash salt ore goaf filling method containing tachydrite layer, comprise the steps: that the old halogen after the tail salt after by ore dressing and dehydration is mixed to get mixed slurry; Take 26-75 part mixed slurry and 84-182 part earth's surface solid NaCl in mass ratio, stir and obtain filling base material; In filling base material, add 10-11 part quicklime, at room temperature after fully stirring, form filling slurry; Filling slurry is transported to carnallite goaf, underground.The present invention invests little, and operating cost is low, economical rationality, safety and environmental protection.
Description
Technical field
The present invention relates to mine underground mining Filling mine-out area technology, be specially a kind of carnallite type potash salt ore goaf filling method containing tachydrite layer.
Background technology
No matter carnallite, as one of the main existing forms in nature solid potassium salt ore deposit, adopts solids production or liquid exploitation, all can produce a large amount of mine tailings.
According to the requirement of country to environmental protection aspect, mine, after carnallite ore dressing, mine tailing (produce product with carnallite, its mine tailing amount is about the 5-7 of product scale doubly) can not be stacked on the ground, also can not discharge.Earth's surface stored up by current employing solid tail salt or part backfills down-hole, and the processing mode that pond, old halogen ground is deposited, magnesium sheet is deposited or flashed to tank all can not the existence in pollution abatement source.
Utilize mine tailing as filling major ingredient, preparation filling slurry filling Goaf Area, becomes the major way in effective pollution abatement source.But traditional way is that old halogen after evaporation (is mainly MgCl
2and NaCl) (be mainly NaCl and MgCl with ore dressing tail salt
2) mixing, be made into high density slurry casting resin bashing.For the exploitation of the carnallite sylvite ore containing tachydrite layer, the stability influence of this slurry casting resin to ore pillar awaits checking.
Compressive strength is not had in the high density slurry casting resin of old halogen and the mixing of tail salt.In order to prevent gob collapse, suitably need strengthen pillar dimension, to ensure mining safety, meanwhile will reduce ore recovery rate.Flash to bischofite solid filling goaf if continued by old halogen, filling process is complicated, need increase investment and cost.
Potash salt ore goaf filling method disclosed in CN201010164701 is a kind of goaf filling method using the tail salt of magnesium cement and sylvite ore as casting resin, the old halogen emission problem produced after can not effectively solving carnallite ore dressing.A kind of placement method of carnallite goaf disclosed in CN201110034109, be by carnallite ore dressing after mother liquor carry out twice evaporation after, with old halogen and the two-phase mixture of separating out halogen crystalline substance, add dolomite ore deposit through calcining, fragmentation, ore grinding, sieve after CaO powder as curing compound, abundant stirring forms the method that Filling mine-out area is carried out in casting resin afterwards, existing problems have: one is that twice evaporation mother liquor needs enough salt pans and a large amount of thermals source, and two is that the technological process preparing CaO powder need increase investment.
Summary of the invention
The technical problem to be solved in the present invention is for the deficiencies in the prior art, and the invention provides a kind of investment little, operating cost is low, economical rationality, the carnallite type potash salt ore goaf filling method containing tachydrite layer of safety and environmental protection.
The present invention proposes a kind of carnallite type potash salt ore goaf filling method containing tachydrite layer, comprise the steps:
S1, obtain tail salt and old halogen by containing the carnallite type sylvite ore ore dressing of tachydrite layer, utilize Hhigh-efficient thickener to dewater described old halogen;
S2, the old halogen after described tail salt and described dehydration is mixed after, at room temperature stir and obtain the mixed slurry that solid phase mass concentration is 18-35%, mixing time is 30-45min, and speed of agitator is 30-40r/min;
S3, raw material is carried out proportioning, take 26-75 part mixed slurry, 84-182 part earth's surface solid NaCl and 10-11 part quicklime in mass ratio, wherein solid NaCl in earth's surface produces a large amount of solid NaCl to discard on earth's surface after ore dressing;
S4, at room temperature to add earth's surface solid NaCl continue stirring and obtain filling base material to mixed slurry described in S2, mixing time is 30-40min, and speed of agitator is 50-60r/min;
Add quicklime in S5, the filling base material for preparing to S4, at room temperature after fully stirring, form the filling slurry that solid phase mass concentration is 70-76%, mixing time is 0.5-1h, and speed of agitator is 70-80r/min;
S6, the filling slurry prepared by S5 are transported to carnallite goaf, underground.
Preferably, the main component of described mixed slurry is MgCl
2and NaCl.
Preferably, in S6, the filling slurry prepared by S5 delivers to carnallite goaf, underground through pipeline self or force (forcing) pump.
Earth's surface solid NaCl in the present invention is described, because filling is not carried out in the Goaf Area in mine, tail salt after ore dressing is substantially all piled up on earth's surface, be not used, wherein contain a large amount of solid NaCl, utilize this part NaCl as the aggregate solidifying filling base material in the present invention, regulate the concentration of filling slurry.
The present invention adds quicklime as curing compound in filling slurry, can solve moisture softening to ore pillar and country rock in filling slurry, effectively safeguard mining safety, improve ore recovery rate; And due to the old halogen produced after carnallite ore dressing relatively many, tail salt sodium chloride is relatively less, add the waste sodium chloride that earth's surface is stored up in right amount, the pollution problem of the old halogen produced after not only can solving carnallite ore dressing and tail salt pair mine environment, and the pressure that earth's surface heap abandons block tail salt pair bad border destruction can be alleviated, huge environmental benefit and social benefit can be produced.
Accompanying drawing explanation
Fig. 1 is a kind of carnallite type potash salt ore goaf filling method process chart containing tachydrite layer that the present invention proposes.
Fig. 2 is the result that the filling slurry of the initial solid phase mass concentration of difference of a kind of carnallite type potash salt ore goaf filling method gained containing tachydrite layer that the present invention proposes carries out the compressive strength test of 3 days.
Fig. 3 is the result that the filling slurry of the initial solid phase mass concentration of difference of a kind of carnallite type potash salt ore goaf filling method gained containing tachydrite layer that the present invention proposes carries out the test of indoor test test specimen slump.
Detailed description of the invention
A kind of carnallite type potash salt ore goaf filling method containing tachydrite layer of the present invention, comprises the steps:
S1, obtain tail salt and old halogen by containing the carnallite type sylvite ore ore dressing of tachydrite layer, utilize Hhigh-efficient thickener to dewater described old halogen;
S2, the old halogen after described tail salt and described dehydration is mixed after, at room temperature stir and obtain the mixed slurry that solid phase mass concentration is 18-35%, mixing time is 30-45min, and speed of agitator is 30-40r/min;
S3, raw material is carried out proportioning, take 26-75 part mixed slurry, 84-182 part earth's surface solid NaCl and 10-11 part quicklime in mass ratio, wherein solid NaCl in earth's surface produces a large amount of solid NaCl to discard on earth's surface after ore dressing;
S4, at room temperature to add earth's surface solid NaCl continue stirring and obtain filling base material to mixed slurry described in S2, mixing time is 30-40min, and speed of agitator is 50-60r/min;
Add quicklime in S5, the filling base material for preparing to S4, at room temperature after fully stirring, form the filling slurry that solid phase mass concentration is 70-76%, mixing time is 0.5-1h, and speed of agitator is 70-80r/min;
S6, the filling slurry prepared by S5 are transported to carnallite goaf, underground.
Below, by specific embodiment, technical scheme of the present invention is described in detail.
Embodiment 1
A kind of carnallite type potash salt ore goaf filling method containing tachydrite layer of the present invention, comprises the steps:
S1, obtain tail salt and old halogen by containing the carnallite type sylvite ore ore dressing of tachydrite layer, utilize Hhigh-efficient thickener to dewater described old halogen;
S2, the old halogen after described tail salt and described dehydration is mixed after, at room temperature stir and obtain the mixed slurry that solid phase mass concentration is 18%, mixing time is 30min, and speed of agitator is 30r/min, and the main component of described mixed slurry is MgCl
2and NaCl;
S3, raw material is carried out proportioning, take 26 parts of mixed slurries, 84 parts of earth's surface solid NaCl and 10 part quicklimes in mass ratio, wherein solid NaCl in earth's surface produces a large amount of solid NaCl to discard on earth's surface after ore dressing;
S4, at room temperature to add earth's surface solid NaCl continue stirring and obtain filling base material to mixed slurry described in S2, mixing time is 30min, and speed of agitator is 50r/min;
Add quicklime in S5, the filling base material for preparing to S4, at room temperature after fully stirring, form the filling slurry that solid phase mass concentration is 70%, mixing time is 0.5h, and speed of agitator is 70r/min;
S6, the filling slurry prepared by S5 deliver to carnallite goaf, underground through pipeline self or force (forcing) pump.
Embodiment 2
A kind of carnallite type potash salt ore goaf filling method containing tachydrite layer of the present invention, comprises the steps:
S1, obtain tail salt and old halogen by containing the carnallite type sylvite ore ore dressing of tachydrite layer, utilize Hhigh-efficient thickener to dewater described old halogen;
S2, the old halogen after described tail salt and described dehydration is mixed after, at room temperature stir and obtain the mixed slurry that solid phase mass concentration is 35%, mixing time is 45min, and speed of agitator is 40r/min, and the main component of described mixed slurry is MgCl
2and NaCl;
S3, raw material is carried out proportioning, take 75 parts of mixed slurries, 182 parts of earth's surface solid NaCl and 11 part quicklimes in mass ratio, wherein solid NaCl in earth's surface produces a large amount of solid NaCl to discard on earth's surface after ore dressing;
S4, at room temperature to add earth's surface solid NaCl continue stirring and obtain filling base material to mixed slurry described in S2, mixing time is 40min, and speed of agitator is 60r/min;
Add quicklime in S5, the filling base material for preparing to S4, at room temperature after fully stirring, form the filling slurry that solid phase mass concentration is 76%, mixing time is 1h, and speed of agitator is 80r/min;
S6, the filling slurry prepared by S5 deliver to carnallite goaf, underground through pipeline self or force (forcing) pump
Embodiment 3
A kind of carnallite type potash salt ore goaf filling method containing tachydrite layer of the present invention, comprises the steps:
S1, obtain tail salt and old halogen by containing the carnallite type sylvite ore ore dressing of tachydrite layer, utilize Hhigh-efficient thickener to dewater described old halogen;
S2, the old halogen after described tail salt and described dehydration is mixed after, at room temperature stir and obtain the mixed slurry that solid phase mass concentration is 20%, mixing time is 35min, and speed of agitator is 38r/min, and the main component of described mixed slurry is MgCl
2and NaCl;
S3, raw material is carried out proportioning, take 28 parts of mixed slurries in mass ratio, 90 parts of earth's surface solid NaCl and 10 part quicklimes take 26-75 part mixed slurry, 84-182 part earth's surface solid NaCl and 10-11 part quicklime in mass ratio, wherein solid NaCl in earth's surface produces a large amount of solid NaCl to discard on earth's surface after ore dressing;
S4, at room temperature to add earth's surface solid NaCl continue stirring and obtain filling base material to mixed slurry described in S2, mixing time is 32min, and speed of agitator is 55r/min;
Add quicklime in S5, the filling base material for preparing to S4, at room temperature after fully stirring, form the filling slurry that solid phase mass concentration is 71%, mixing time is 0.6h, and speed of agitator is 75r/min;
S6, the filling slurry prepared by S5 deliver to carnallite goaf, underground through pipeline self or force (forcing) pump
Embodiment 4
A kind of carnallite type potash salt ore goaf filling method containing tachydrite layer of the present invention, comprises the steps:
S1, obtain tail salt and old halogen by containing the carnallite type sylvite ore ore dressing of tachydrite layer, utilize Hhigh-efficient thickener to dewater described old halogen;
S2, the old halogen after described tail salt and described dehydration is mixed after, at room temperature stir and obtain the mixed slurry that solid phase mass concentration is 32%, mixing time is 40min, and speed of agitator is 38r/min, and the main component of described mixed slurry is MgCl
2and NaCl;
S3, raw material is carried out proportioning, take 70 parts of mixed slurries, 170 parts of earth's surface solid NaCl and 11 part quicklimes in mass ratio, wherein solid NaCl in earth's surface produces a large amount of solid NaCl to discard on earth's surface after ore dressing;
S4, at room temperature to add earth's surface solid NaCl continue stirring and obtain filling base material to mixed slurry described in S2, mixing time is 0.8h, and speed of agitator is 78r/min;
Add quicklime in S5, the filling base material for preparing to S4, at room temperature after fully stirring, form the filling slurry that solid phase mass concentration is 74%, mixing time is 38min, and speed of agitator is 58r/min;
S6, the filling slurry prepared by S5 deliver to carnallite goaf, underground through pipeline self or force (forcing) pump
Embodiment 5
A kind of carnallite type potash salt ore goaf filling method containing tachydrite layer of the present invention, comprises the steps:
S1, obtain tail salt and old halogen by containing the carnallite type sylvite ore ore dressing of tachydrite layer, utilize Hhigh-efficient thickener to dewater described old halogen;
S2, the old halogen after described tail salt and described dehydration is mixed after, at room temperature stir and obtain the mixed slurry that solid phase mass concentration is 24%, mixing time is 35min, and speed of agitator is 34r/min, and the main component of described mixed slurry is MgCl
2and NaCl;
S3, raw material is carried out proportioning, take 35 parts of mixed slurries, 95 parts of earth's surface solid NaCl and 10 part quicklimes in mass ratio, wherein solid NaCl in earth's surface produces a large amount of solid NaCl to discard on earth's surface after ore dressing;
S4, at room temperature to add earth's surface solid NaCl continue stirring and obtain filling base material to mixed slurry described in S2, mixing time is 30min, and speed of agitator is 54r/min;
Add quicklime in S5, the filling base material for preparing to S4, at room temperature after fully stirring, form the filling slurry that solid phase mass concentration is 72%, mixing time is 0.75h, and speed of agitator is 74r/min;
S6, the filling slurry prepared by S5 deliver to carnallite goaf, underground through pipeline self or force (forcing) pump
Embodiment 6
A kind of carnallite type potash salt ore goaf filling method containing tachydrite layer of the present invention, comprises the steps:
S1, obtain tail salt and old halogen by containing the carnallite type sylvite ore ore dressing of tachydrite layer, utilize Hhigh-efficient thickener to dewater described old halogen;
S2, the old halogen after described tail salt and described dehydration is mixed after, at room temperature stir and obtain the mixed slurry that solid phase mass concentration is 30%, mixing time is 40min, and speed of agitator is 36r/min, and the main component of described mixed slurry is MgCl
2and NaCl;
S3, raw material is carried out proportioning, take 60 parts of mixed slurries, 160 parts of earth's surface solid NaCl and 11 part quicklimes in mass ratio, wherein solid NaCl in earth's surface produces a large amount of solid NaCl to discard on earth's surface after ore dressing;
S4, at room temperature to add earth's surface solid NaCl continue stirring and obtain filling base material to mixed slurry described in S2, mixing time is 36min, and speed of agitator is 56r/min;
Add quicklime in S5, the filling base material for preparing to S4, at room temperature after fully stirring, form the filling slurry that solid phase mass concentration is 75%, mixing time is 1h, and speed of agitator is 76r/min;
S6, the filling slurry prepared by S5 deliver to carnallite goaf, underground through pipeline self or force (forcing) pump
Embodiment 7
A kind of carnallite type potash salt ore goaf filling method containing tachydrite layer of the present invention, comprises the steps:
S1, obtain tail salt and old halogen by containing the carnallite type sylvite ore ore dressing of tachydrite layer, utilize Hhigh-efficient thickener to dewater described old halogen;
S2, the old halogen after described tail salt and described dehydration is mixed after, at room temperature stir and obtain the mixed slurry that solid phase mass concentration is 27%, mixing time is 40min, and speed of agitator is 35r/min, and the main component of described mixed slurry is MgCl
2and NaCl;
S3, raw material is carried out proportioning, take 50 parts of mixed slurries, 135 parts of earth's surface solid NaCl and 10.5 part quicklimes in mass ratio, wherein solid NaCl in earth's surface produces a large amount of solid NaCl to discard on earth's surface after ore dressing;
S4, at room temperature to add earth's surface solid NaCl continue stirring and obtain filling base material to mixed slurry described in S2, mixing time is 35min, and speed of agitator is 55r/min;
Add quicklime in S5, the filling base material for preparing to S4, at room temperature after fully stirring, form the filling slurry that solid phase mass concentration is 73%, mixing time is 0.7h, and speed of agitator is 75r/min;
S6, the filling slurry prepared by S5 deliver to carnallite goaf, underground through pipeline self or force (forcing) pump
The filling slurry of embodiment 1-7 gained is carried out to compressive strength test and the test of indoor test test specimen slump of 3 days, result as shown in Figures 2 and 3.
Fig. 2 is the result that the filling slurry of the initial solid phase mass concentration of difference of gained of the present invention carries out the compressive strength test of 3 days, is specially the relation of the initial solid phase mass concentration of filling slurry and 3 days test specimen compressive strength.
Fig. 3 is the result that the filling slurry of the initial solid phase mass concentration of difference of gained of the present invention carries out the test of indoor test test specimen slump, be specially the initial solid phase mass concentration of filling slurry with can the relation of time of delivery.
Shown in Fig. 2 and Fig. 3, can reach a conclusion: the initial solid phase mass concentration of filling slurry of gained of the present invention 75% time, 3 days test specimen compressive strength performances and can simultaneously reach best by time of delivery.
The above; be only the present invention's preferably detailed description of the invention; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (3)
1., containing a carnallite type potash salt ore goaf filling method for tachydrite layer, it is characterized in that, comprise the steps:
S1, obtain tail salt and old halogen by containing the carnallite type sylvite ore ore dressing of tachydrite layer, utilize Hhigh-efficient thickener to dewater described old halogen;
S2, the old halogen after described tail salt and described dehydration is mixed after, at room temperature stir and obtain the mixed slurry that solid phase mass concentration is 18-35%, mixing time is 30-45min, and speed of agitator is 30-40r/min;
S3, raw material is carried out proportioning, take 26-75 part mixed slurry, 84-182 part earth's surface solid NaCl and 10-11 part quicklime in mass ratio, wherein solid NaCl in earth's surface produces a large amount of solid NaCl to discard on earth's surface after ore dressing;
S4, at room temperature to add earth's surface solid NaCl continue stirring and obtain filling base material to mixed slurry described in S2, mixing time is 30-40min, and speed of agitator is 50-60r/min;
Add quicklime in S5, the filling base material for preparing to S4, at room temperature after fully stirring, form the filling slurry that solid phase mass concentration is 70-76%, mixing time is 0.5-1h, and speed of agitator is 70-80r/min;
S6, the filling slurry prepared by S5 are transported to carnallite goaf, underground.
2., as claimed in claim 1 containing the carnallite type potash salt ore goaf filling method of tachydrite layer, it is characterized in that, the main component of described mixed slurry is MgCl
2and NaCl.
3., as claimed in claim 1 containing the carnallite type potash salt ore goaf filling method of tachydrite layer, it is characterized in that, in S6, the filling slurry prepared by S5 delivers to carnallite goaf, underground through pipeline self or force (forcing) pump.
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| CN201410159973.XA CN103953389B (en) | 2014-04-21 | 2014-04-21 | A kind of carnallite type potash salt ore goaf filling method containing tachydrite layer |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106673469B (en) * | 2017-01-26 | 2019-03-26 | 山东瑞源钾盐工程技术股份有限公司 | The curing materials preparation method that is gelled and the method for comprehensively utilizing magnesium chloride tail washings with it |
| CN107365129B (en) * | 2017-09-01 | 2020-06-19 | 中农国际钾盐开发有限公司 | Method for producing sylvite cemented filling material by using graded tail salt |
| CN109538289B (en) * | 2018-12-05 | 2021-07-02 | 飞翼股份有限公司 | Underground filling material suitable for pipeline transportation and preparation method thereof |
| CN111535853B (en) * | 2020-05-18 | 2022-05-31 | 老挝开元矿业有限公司 | Filling slurry for filling and backfilling process after underground sylvite mining |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4207182A1 (en) * | 1991-03-07 | 1992-09-10 | Ruhrkohle Montalith Gmbh | Mine space backfilling method - which delivers granular material mixed with water via drillings from gallery above |
| RU2369741C2 (en) * | 2007-07-06 | 2009-10-10 | Юрий Павлович Галченко | Method for underground development of ore deposits in cryolithic zone |
| CN102515683A (en) * | 2011-12-15 | 2012-06-27 | 中蓝连海设计研究院 | Filling paste prepared from salt deposit exploitation tail salt and consolidated filling method thereof |
| CN102536315A (en) * | 2011-12-30 | 2012-07-04 | 中农矿产资源勘探有限公司 | Filling method of potash mine goaf |
| CN103360011A (en) * | 2013-07-18 | 2013-10-23 | 化工部长沙设计研究院 | Carnallite mine goaf filling method |
-
2014
- 2014-04-21 CN CN201410159973.XA patent/CN103953389B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4207182A1 (en) * | 1991-03-07 | 1992-09-10 | Ruhrkohle Montalith Gmbh | Mine space backfilling method - which delivers granular material mixed with water via drillings from gallery above |
| RU2369741C2 (en) * | 2007-07-06 | 2009-10-10 | Юрий Павлович Галченко | Method for underground development of ore deposits in cryolithic zone |
| CN102515683A (en) * | 2011-12-15 | 2012-06-27 | 中蓝连海设计研究院 | Filling paste prepared from salt deposit exploitation tail salt and consolidated filling method thereof |
| CN102536315A (en) * | 2011-12-30 | 2012-07-04 | 中农矿产资源勘探有限公司 | Filling method of potash mine goaf |
| CN103360011A (en) * | 2013-07-18 | 2013-10-23 | 化工部长沙设计研究院 | Carnallite mine goaf filling method |
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