CN102228762A - Dehydration method and device of tailings - Google Patents
Dehydration method and device of tailings Download PDFInfo
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- CN102228762A CN102228762A CN201110125669XA CN201110125669A CN102228762A CN 102228762 A CN102228762 A CN 102228762A CN 201110125669X A CN201110125669X A CN 201110125669XA CN 201110125669 A CN201110125669 A CN 201110125669A CN 102228762 A CN102228762 A CN 102228762A
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Abstract
The invention relates to a dehydration method and a dehydration device of tailings. The dehydration device mainly comprises a cyclone, a thickener, a vacuum belt filter and a sedimentation basin. A tailing slurry discharged from an ore dressing workshop go through the cyclone, the thickener and the vacuum belt filter in order to form dry materials which are placed in a stock dump. And a flocculating agent adding system is installed between the thickener and the vacuum belt filter. The sedimentation basin is connected to a collection basin used for collecting the clear water overflowing from the sedimentation basin, and then the clear water come into the ore dressing workshop for recycling. With the dehydration method and dehydration device of tailings, risks from dehydration with a tailing dam can be eliminated, so that accidents are effectively avoided. Meanwhile, the device of the invention has low investment, low running cost and high dehydration rate.
Description
Technical field
The invention belongs to the Di Kuang field, relate in particular to a kind of tailings dewatering method and dewater unit.
Background technology
The Di Kuang field is for the processing of mine tailing, and the major measure that adopts is to utilize tailing dam at present.The mine tailing slurry enters the tailing dam precipitation, and water progressively separates in tailing dam with solid particle.At the bottom of the solid particulate matter sedimentation basin, the upper strata mainly is a clear water.Along with the continuous inflow of mine tailing slurry, clear water overflow and going out continues to reclaim and uses.Particle progressively is deposited to the bottom and stays in the tailing dam.Realization is worked continuously.Adopt this method to handle mine tailing, with low cost, but exist bigger potential safety hazard.Tailing dam itself is exactly the source of a mud-rock flow.Method along with domestic tailing dam collapse accident.The control that country builds tailing dam is very strict.Be necessary to find a kind of new method to replace the effect of tailing dam, realize substituting of new old technology.
Tailings dewatering is a core process of handling mine tailing.Its effect is that solid particle in the mine tailing slurry and moisture are left, and after separating, can be put into safe place to solid particle, and the clear water of separating can be recycled.
Summary of the invention
The present invention has designed a kind of tailings dewatering method and dewater unit, and its purpose just provides a kind of tailings dewatering method and dewater unit safe, reliable, with low cost.
In order to solve the technical problem of above-mentioned existence, the present invention has adopted following scheme:
A kind of tailings dewatering device is characterized in that: mainly comprise cyclone, thickener, vacuum band-type filter machine and sedimentation basin; The siccative that the mine tailing slurry of discharging from enrichment plant forms through cyclone, thickener, vacuum band-type filter machine successively enters the stockyard and places.
The water of collecting in the described sedimentation basin is in the water of deviating from through described cyclone, described thickener, described vacuum band-type filter machine effect one or more; The water that contains a small amount of mine tailing in the described sedimentation basin enters described thickener and does the second dehydration processing.
Between described thickener and described vacuum band-type filter machine, also be provided with the flocculant add-on system, make fine particle and the flocculant in the solution in the mine tailing slurry form floc sedimentation and rapid subsidence.
Described flocculant is polyacrylic or polyacrylamide.
Described sedimentation basin also is connected with a collecting pit, and described collecting pit is used for the clear water that the collecting precipitation pond overflows.
It is recycling that clear water in the described collecting pit enters enrichment plant.
A kind ofly utilize described tailings dewatering device to carry out dehydration method, it is characterized in that comprising following steps:
At first, the mine tailing slurry that flows out from enrichment plant enters cyclone and carries out preliminary hydro-extraction, and the concentration of dehydration back mine tailing slurry improves, and the water that cyclone produces enters sedimentation basin;
Secondly, mine tailing slurry after cyclone is handled enters concentration basin and carries out the sedimentation concentration, further improve the concentration of mine tailing slurry, the mine tailing slurry through sedimentation enters the vacuum band-type filter machine dewatering operation then, and the water of deviating from from concentration basin and vacuum band-type filter machine all enters sedimentation basin;
Once more, the mine tailing slurry of being crossed by the vacuum band-type filter machine processed becomes siccative and is transported to the stockyard and stacks; The clear water that overflows in the sedimentation basin enters collecting pit and sends back to enrichment plant and continues to recycle;
At last, the water that contains a small amount of mine tailing in the sedimentation basin is delivered to the thickener second dehydration and handles, and the flocculant that the prepares mine tailing efferent duct place after by the processing of concentration basin dropped into, make fine particle and formation floc sedimentation of the flocculant in the solution and rapid subsidence in the mine tailing slurry; Form siccative after mine tailing is starched and handled through vacuum band-type filter machine more then and enter the stockyard stacking.
The moisture content of described siccative is lower than 15%.
The interpolation quality of described flocculant is 0.5 ‰-5 ‰ of a mine tailing slurry gross mass.
This tailings dewatering method and dewater unit have following beneficial effect:
(1) tailings dewatering method of the present invention and dewater unit are well eliminated the risk of utilizing the tailing dam dehydration, effectively avoid the generation of accident.
(2) tailings dewatering method of the present invention and dewater unit input expense is few, operating cost is low, dehydration rate is high.
(3) tailings dewatering method of the present invention and dewater unit is reasonable in design, science, whole device is safe and reliable to operation.
Description of drawings
Fig. 1: tailings dewatering process flow diagram of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention will be further described:
Fig. 1 shows a kind of tailings dewatering device, mainly comprises cyclone, thickener, vacuum band-type filter machine and sedimentation basin; The siccative that the mine tailing slurry of discharging from enrichment plant forms through cyclone, thickener, vacuum band-type filter machine successively enters the stockyard and places.The water of the water of collecting in the sedimentation basin for deviating from through cyclone, thickener, vacuum band-type filter machine effect; The water that deposition contains a small amount of mine tailing in the sedimentation basin enters described thickener and makes second dehydration and handle.Also be provided with the flocculant add-on system between thickener and described vacuum band-type filter machine, make fine particle and the flocculant in the solution in the mine tailing slurry form floc sedimentation and rapid subsidence, flocculant is polyacrylic or polyacrylamide.Sedimentation basin also is connected with a collecting pit, and described collecting pit is used for the clear water that the collecting precipitation pond overflows, and it is recycling that the clear water in the collecting pit enters enrichment plant.
As shown in Figure 1, the mine tailing slurry of discharging from enrichment plant through cyclone, thickener, vacuum band-type filter machine be successively because, initial mine tailing slurry concentration is very low, moisture is very high, therefore at first rotate through the high speed of cyclone, can slough most water fast, the ore pulp after cyclone is handled is the ore pulp of high concentration.
This ore pulp that contains more bulky grain mineral high concentration enters into thickener then, and the ore pulp of this kind state is more suitable for sedimentation and concentrates, and then obtains the higher ore pulp of concentration; The ore pulp of discharging from thickener is higher because of its concentration, moisture is difficult for deposition and separates with the solid layering, therefore need to increase and use vacuum band-type filter machine, this machine is a medium with filter cloth or filter screen, make slip horizontally disposed on filter medium, make full use of slip gravity and pull of vacuum and realize that Separation of Solid and Liquid, the moisture content that obtains at last are lower than 15% siccative and are transported to the stockyard and place.
A kind of this tailings dewatering device that utilizes carries out dehydration method, comprises following steps:
At first, the mine tailing slurry that flows out from enrichment plant enters cyclone and carries out preliminary hydro-extraction, and the concentration of dehydration back mine tailing slurry improves, and the water that cyclone produces enters sedimentation basin;
Secondly, mine tailing slurry after cyclone is handled enters concentration basin and carries out the sedimentation concentration, further improve the concentration of mine tailing slurry, the mine tailing slurry through sedimentation enters the vacuum band-type filter machine dewatering operation then, and the water of deviating from from concentration basin and vacuum band-type filter machine all enters sedimentation basin;
Once more, the mine tailing slurry of being crossed by the vacuum band-type filter machine processed becomes siccative and is transported to the stockyard and stacks; The clear water that overflows in the sedimentation basin enters collecting pit and sends back to enrichment plant and continues to recycle;
At last, the water that contains a small amount of mine tailing in the sedimentation basin is delivered to the thickener second dehydration and handles, and the flocculant that the prepares mine tailing efferent duct place after by the processing of concentration basin dropped into, make fine particle and formation floc sedimentation of the flocculant in the solution and rapid subsidence in the mine tailing slurry; Form siccative after mine tailing is starched and handled through vacuum band-type filter machine more then and enter the stockyard stacking.The interpolation quality of flocculant is 0.5 ‰-5 ‰ of a mine tailing slurry gross mass.
Tailings dewatering method of the present invention and dewater unit are well eliminated the risk of utilizing the tailing dam dehydration, effectively avoid the generation of accident.This device input expense is few simultaneously, operating cost is low, the dehydration rate height.
In conjunction with the accompanying drawings the present invention has been carried out exemplary description above; obvious realization of the present invention is not subjected to the restriction of aforesaid way; as long as the various improvement of having adopted method design of the present invention and technical scheme to carry out; or design of the present invention and technical scheme are directly applied to other occasion without improving, all in protection scope of the present invention.
Claims (9)
1. a tailings dewatering device is characterized in that: mainly comprise cyclone, thickener, vacuum band-type filter machine and sedimentation basin; The siccative that the mine tailing slurry of discharging from enrichment plant forms through cyclone, thickener, vacuum band-type filter machine successively enters the stockyard and places.
2. according to the described tailings dewatering device of claim 1, it is characterized in that: the water of collecting in the described sedimentation basin is in the water of deviating from through described cyclone, described thickener, described vacuum band-type filter machine effect one or more; The water that contains a small amount of mine tailing in the described sedimentation basin enters described thickener and does the second dehydration processing.
3. according to claim 1 or 2 described tailings dewatering devices, it is characterized in that: between described thickener and described vacuum band-type filter machine, also be provided with the flocculant add-on system, make fine particle and the flocculant in the solution in the mine tailing slurry form floc sedimentation and rapid subsidence.
4. according to the described tailings dewatering device of claim 3, it is characterized in that: described flocculant is polyacrylic or polyacrylamide.
5. according to claim 1 or 2 or 4 described tailings dewatering devices, it is characterized in that: described sedimentation basin also is connected with a collecting pit, and described collecting pit is used for the clear water that the collecting precipitation pond overflows.
6. according to the described tailings dewatering device of claim 5, it is characterized in that: it is recycling that the clear water in the described collecting pit enters enrichment plant.
7. one kind is utilized the described tailings dewatering device of claim 1-6 to carry out dehydration method, it is characterized in that comprising following steps:
At first, the mine tailing slurry that flows out from enrichment plant enters cyclone and carries out preliminary hydro-extraction, and the concentration of dehydration back mine tailing slurry improves, and the water that cyclone produces enters sedimentation basin;
Secondly, mine tailing slurry after cyclone is handled enters concentration basin and carries out the sedimentation concentration, further improve the concentration of mine tailing slurry, the mine tailing slurry through sedimentation enters the vacuum band-type filter machine dewatering operation then, and the water of deviating from from concentration basin and vacuum band-type filter machine all enters sedimentation basin;
Once more, the mine tailing slurry of being crossed by the vacuum band-type filter machine processed becomes siccative and is transported to the stockyard and stacks; The clear water that overflows in the sedimentation basin enters collecting pit and sends back to enrichment plant and continues to recycle;
At last, the water that contains a small amount of mine tailing in the sedimentation basin is delivered to the thickener second dehydration and handles, and the flocculant that the prepares mine tailing efferent duct place after by the processing of concentration basin dropped into, make fine particle and formation floc sedimentation of the flocculant in the solution and rapid subsidence in the mine tailing slurry; Form siccative after mine tailing is starched and handled through vacuum band-type filter machine more then and enter the stockyard stacking.
8. according to the described tailings dewatering method of claim 7, it is characterized in that: the moisture content of described siccative is lower than 15%.
9. described according to Claim 8 tailings dewatering method is characterized in that: the interpolation quality of described flocculant is 0.5 ‰-5 ‰ of a mine tailing slurry gross mass.
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Cited By (12)
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| CN102909122A (en) * | 2012-10-16 | 2013-02-06 | 中冶北方（大连）工程技术有限公司 | Concentrating and dry stacking system of tailings and dry stacking method |
| CN102974452A (en) * | 2012-11-29 | 2013-03-20 | 昆明钢铁控股有限公司 | Method for treating high-mud-content fine-graded iron tailings |
| CN103212242A (en) * | 2013-02-08 | 2013-07-24 | 浙江双金机械集团股份有限公司 | Special dehydration rotational flow assembly for sand and water separation system as well as sand and water separation method |
| CN103405964A (en) * | 2013-08-06 | 2013-11-27 | 云南大红山管道有限公司 | Water treatment system and water treatment method applied to purified iron-ore slurry dehydration |
| CN103599662A (en) * | 2013-11-21 | 2014-02-26 | 云南大红山管道有限公司 | Distributary pulp dewatering and concentrating system and method |
| CN104958949A (en) * | 2015-06-18 | 2015-10-07 | 内蒙古中西矿业有限公司 | Multi-distribution system of tailings dry discharge belt filtering machine |
| CN108501221A (en) * | 2018-04-09 | 2018-09-07 | 长沙矿山研究院有限责任公司 | Filling slurry Preparation equipment, technique and filling system |
| CN108746159A (en) * | 2018-06-21 | 2018-11-06 | 安徽金安矿业有限公司 | A kind of slurry concentrating dewatering and device |
| CN112138854A (en) * | 2019-06-26 | 2020-12-29 | 阿勒泰正元国际矿业有限公司 | Method for dehydrating quartz vein type gold mine tailings |
| CN112370862A (en) * | 2020-10-23 | 2021-02-19 | 长沙矿冶研究院有限责任公司 | Slurry shipborne dehydration method for ocean mining ship |
| CN114159879A (en) * | 2021-12-09 | 2022-03-11 | 安徽大昌矿业集团有限公司 | Tailing concentration dehydration purification device |
| CN114515405A (en) * | 2020-11-18 | 2022-05-20 | 中蓝连海设计研究院有限公司 | Method for reducing total phosphorus in phosphorus tailings |
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| CN102909122A (en) * | 2012-10-16 | 2013-02-06 | 中冶北方（大连）工程技术有限公司 | Concentrating and dry stacking system of tailings and dry stacking method |
| CN102974452A (en) * | 2012-11-29 | 2013-03-20 | 昆明钢铁控股有限公司 | Method for treating high-mud-content fine-graded iron tailings |
| CN103212242B (en) * | 2013-02-08 | 2015-08-12 | 浙江双金机械集团股份有限公司 | Sand and water separating system special dehydration eddy flow assembly and sand water separating method |
| CN103212242A (en) * | 2013-02-08 | 2013-07-24 | 浙江双金机械集团股份有限公司 | Special dehydration rotational flow assembly for sand and water separation system as well as sand and water separation method |
| CN103405964A (en) * | 2013-08-06 | 2013-11-27 | 云南大红山管道有限公司 | Water treatment system and water treatment method applied to purified iron-ore slurry dehydration |
| CN103405964B (en) * | 2013-08-06 | 2015-10-28 | 云南大红山管道有限公司 | Water treatment system in a kind of smart iron ore slurry dehydration and method for treating water |
| CN103599662B (en) * | 2013-11-21 | 2015-07-29 | 云南大红山管道有限公司 | A kind of shunting pulp dewatering concentration systems and dehydration method for concentration |
| CN103599662A (en) * | 2013-11-21 | 2014-02-26 | 云南大红山管道有限公司 | Distributary pulp dewatering and concentrating system and method |
| CN104958949A (en) * | 2015-06-18 | 2015-10-07 | 内蒙古中西矿业有限公司 | Multi-distribution system of tailings dry discharge belt filtering machine |
| CN108501221A (en) * | 2018-04-09 | 2018-09-07 | 长沙矿山研究院有限责任公司 | Filling slurry Preparation equipment, technique and filling system |
| CN108746159A (en) * | 2018-06-21 | 2018-11-06 | 安徽金安矿业有限公司 | A kind of slurry concentrating dewatering and device |
| CN112138854A (en) * | 2019-06-26 | 2020-12-29 | 阿勒泰正元国际矿业有限公司 | Method for dehydrating quartz vein type gold mine tailings |
| CN112370862A (en) * | 2020-10-23 | 2021-02-19 | 长沙矿冶研究院有限责任公司 | Slurry shipborne dehydration method for ocean mining ship |
| CN114515405A (en) * | 2020-11-18 | 2022-05-20 | 中蓝连海设计研究院有限公司 | Method for reducing total phosphorus in phosphorus tailings |
| CN114159879A (en) * | 2021-12-09 | 2022-03-11 | 安徽大昌矿业集团有限公司 | Tailing concentration dehydration purification device |
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