CN1162505A - Treating process of tailings - Google Patents
Treating process of tailings Download PDFInfo
- Publication number
- CN1162505A CN1162505A CN 96115223 CN96115223A CN1162505A CN 1162505 A CN1162505 A CN 1162505A CN 96115223 CN96115223 CN 96115223 CN 96115223 A CN96115223 A CN 96115223A CN 1162505 A CN1162505 A CN 1162505A
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- tailings
- mine tailing
- tailing
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Abstract
A process for treating tailings which are glassified to be treated and reused based on granularities features that the coarse tailings sand (about 40%) separated by hydraulic cyclone is used to fill underground gob area and space between columns, the middle or the fine tailings sand separated by efficient centrifugal filter is used to create field, and the tailings water after two-stage treating in precipitation pool and sewage treating pool with small-size overflow dam instead of tailings dam, overflow well and overflow pipeline is recovered to reuse. Its advantages include low cost, less consumption of energy, less environmental pollution and high utilization rate.
Description
The present invention relates to a kind of mine tailing treatment technology of mine.
Traditional mine tailing treatment process is after the mine tailing slurry in ore dressing plant is sent into one-level sand pump station, to carry the mine tailing slurry with slag stock pump or Mars pump pressure, and the mine tailing slurry is delivered to secondary sand pump station through the mine tailing transfer pipeline, and the mine tailing slurry is till sending into the mine tailing storehouse by that analogy.
It is big that the mine tailing storehouse is typically chosen in storage capacity, the pocket-shape kar that tailing dam is little.Build overflow well and overflow pipe in the mine tailing storehouse, tailing dam is built sump outward.Come the mine tailing slurry of free factory in the mine tailing storehouse, to discharge, along with the absolute altitude of CHARACTERISTICS OF TAILINGS SAND increases, with the height of dry sand accumulation the increasing tailing dam of precipitation at the tailing dam top.Behind the sand setting, overflow water flow to sump tailing dam outside through overflow well, overflow pipe in the mine tailing storehouse for mine tailing slurry, again with water pump and return piping tailing water deliver to select factory's ball mill and roughly select among.
There is following shortcoming in traditional mine tailing treatment process: can not find suitable mine tailing Kuku near the elected factory when pulling, the mine tailing storehouse is typically chosen in the pocket-shape landform that the storage capacity far away from the ore dressing plant is big, openning is little, therefore cause mine tailing carrier pipe line length, increase at the sand pump station, correspondingly the tailings conveying process is many, complex management, big energy-consuming, investment is big, the shortcoming that cost is high.And the bigger good farmland of area in the mountain valley is occupied in the mine tailing storehouse.Because full tailings is emitted on the mine tailing storehouse, carry the tailings amount in mine tailing storehouse many, correspondingly increase the cost of carrying mine tailing, waste energy, increase the investment of tailing dam, overflow well, overflow pipe, increase environmental pollution.
The purpose of this invention is to provide a kind for the treatment of process of tailings.Handle the purpose of the investment of mine tailing and cost, the saving energy and water resource, minimizing environmental pollution for bazardous waste-CHARACTERISTICS OF TAILINGS SAND of utilizing the mine and tailing water, reduction as far as possible, treating process of tailings has adopted by the tailings particle size size, classification is handled, the method that classification utilizes.
Ore-dressing technique is made up of muck technology A, ore grinding and floatation process B, essence mine dehydration technology C.
Treating process of tailings is made up of sand pump station D, near coal-mine tailing-filled workshop E, mine tailing storehouse F.See D among Fig. 1, E, F.
Be that 1000 ton per days, a day discharging tailings amount are 992.34 ton per days with production scale below, per second discharging tailings amount is 0.0115 ton/second, is embodiment, and the invention will be further described.
The characterisitic parameter of mine tailing is as follows: mine tailing real density 2.9t/m
3, mine tailing bulk density 1.7t/m
3, mine tailing pulp density 1.36t/m
3, mine tailing weight concentration 40%, mine tailing liquid-solid ratio are 1.5, mine tailing denseness 6.7%, mine tailing conveying capacity Qmax=0.0255m
3/ s, Qmin=0.0191m
3/ s.
The grade of mine tailing is composed as follows:
| Granularity rank (mm) | Productive rate (%) | |
| Single grade | Accumulative total | |
| +0.147 | ????5.00 | |
| ?0.104～0.147 | ????8.75 | ???13.75 |
| (0.074 200 order)～0.104 | ????14.25 | ???28.00 |
| (0.053 270 order)～0.074 | ????14.6 | ???42.6 |
| (0.043 325 order)～0.053 | ????10.55 | ???53.55 |
| (0.037 400 order)～0.043 | ????8.5 | ???61.65 |
| ?-0.037 | ????38.35 | ???100.00 |
| The weighted average particle diameter | dcp＝0.0558mm | |
One-level sand pump station D: behind the overflow water that mine tailing is starched and essence mine dehydration technology C the discharges inflow mine tailing reserve pit 1 by floatation process B discharging, mine tailing is starched the hydraulic vortex flow devices of squeezing among the near coal-mine filling workshop E 4 with slag stock pump 2 and mine tailing conveyance conduit 3.
Near coal-mine tailing-filled workshop E: starch through hydraulic vortex flow devices 4 classifications from the mine tailing of one-level sand pump station D, + 270 purpose sand settings (account for full tailings 40%) flow into storage sand pond 5, after the underflow in storage sand pond 5 is given tank diameter 9 concentration 60% thick last mortar and is stirred by screw(-type) feeder 6, send into filling with awarding funnel 10, be responsible for 11 and arm through the filling of lining Polyurethane high-abrasive material again, slightly last mortar and barren rock bashing together.
If during with tailing fill method back production studding, the thick tailings underflow in storage sand pond 5 and the cement in the cement bin 7 are given in the tank diameter 9 after the stirring with screw(-type) feeder 6 and 8 respectively, 5%～10% tailings cement mortar sent into award funnel 10, be responsible for 11 and arm through filling again, the tailings grout filling to the studding position.
When thick tailing-filled goaf of+270 purposes or tailing cemented filling, not only the sinking speed of thick tailings is fast, and dewatering is good, and the gap between the gob, makes obturation more closely knit.The material source of thick tailings is abundant, and low price is a fabulous filler.
About 40% tailing-filled goaf and tailing cemented filling studding not only use harmful substance-tailings to handle the goaf, protection face of land ecological environment, and reduce the tailings amount that enters the mine tailing storehouse, and reduce production cost, reduce the investment of facilities such as tailing dam.
After the overflow ore pulp flows into the reserve pit 12 at secondary sand pump station in the overflow ore pulp of hydraulic vortex flow devices 4 and the storage sand pond 5, fine sand mine tailing slurry in-270 purposes is sent in the reserve pit 15 of mine tailing storehouse F by slag stock pump 13 and mine tailing conveyance conduit 14.
Mine tailing storehouse F: F and the mine tailing storehouse image schematic diagram 2 of seeing Fig. 1.After thin last mortar is sent into the reserve pit 15 of mine tailing storehouse F in-270 orders of secondary sand pump station slag stock pump 13 among the near coal-mine filling workshop E, the underflow of reserve pit 15 is sent into efficient centrifugal filter 17 by screw(-type) feeder 16, the mine tailing slurry is after the efficient centrifugal filter filters moisture, account for full tailings 30%～40%+the dried tailings filter cake of 400 orders is disposed to the storage sand storehouse 18 of its underpart, again through the funnel 19 in storage sand storehouse and mine car 20 along narrow gauge railway in, thin dried tailings is disposed on the hillside 21 of mine tailing storehouse F.We scrape out stairstepping to the hillside, prevent the landslide in tailings stockyard.
Efficient centrifugal filter 17 is that the centrifugal action of utilizing ore pulp drains into the outside of rotating strainer to moisture, catches solid particle and rotate the strainer inboard, forms the filter cake on the strainer, and continuous-feeding and continuous pulp discharge, draining; Centrifugal dehydration strength can reach 2 more than the atmospheric pressure, so tailings dewatering is effective, and power consumption is few, and production capacity is big.Through experiment, thin tailings filter cake moisture can reach 10～15% in the filtration of efficient centrifugal filter, and production capacity can reach 10～20 tons/hour, satisfies the requirement that mine tailing is handled.
Because in, thin tailings is to the poor permeability of rainwater, so in thin tailings stack smooth after, covers 0.5 meter thick clay and fertile soil, can make the tailings stockyard become the good farmland and afforestation is distinguished.
The filtered water gravity flow of the overflow water of reserve pit 15 and efficient centrifugal filter 17 flows into to enclose to pull is with 22 (nylon cloth being sticked on concrete column with seccotine), after catching 10～20% thin tailings, filtered water flows into sedimentation basin 23, precipitate about 10% fine sand, carry out the sewage disposal of one-level mine tailing in the sedimentation basin 23, processed mine tailing overflow water flows into treatment tank 25 through overfall dam 24 and carries out the B-grade sewage processing, the sewage of two stage treatment is after overfall dam 26 flows into sumps 27, and 70～80% water of having handled are sent back in ball mill and the flotation by backwater water pump 28 and water return pipeline 30 and roughly selected in the flow process.20～30% the sewage of having handled can be emitted on the face of land 29 in the sump 27.
Mine tailing storehouse new model has been completely free of the pattern (the pocket-shape landform that storage capacity is big in the mountain valley, openning is little) of selecting traditional tailing, near the dried tailings of particulate in selecting factory, piling up on the hillside, increase considerably tailings and pile up capacity, and tailings is stacked clay and fertile soil that smooth back covers 0.5 meter, can become good farmland and afforestation district to it, reduce environmental pollution, improve the ecological environment; Especially select when can not find suitable address, mine tailing storehouse near the factory, select mine tailing storehouse new model for use, pile up tailings on the hillside selecting near the factory, can save the investment at mine tailing conveyance conduit and sand pump station, simplify the mine tailing conveying process, reduce mine tailing and carry cost, energy savings, and do not occupy the bigger good farmland of area in the mountain valley.
Mine tailing storehouse new model is to replace traditional tailing dam, overflow well, overflow pipe with scale less sedimentation basin overfall dam 24 and treatment tank overfall dam 26, and 70～80% tailing waters of having handled are sent back to and are selected factory to reuse, and only discharge 20～30% sewage of having handled on the face of land.
So not only saved the investment in mine tailing storehouse, the conserve water resource and the energy, and reduce the tailing water environmental pollution.
Claims (1)
1, treating process of tailings is characterized in that:
A, press the tailings particle size size, classification is handled, classification utilizes, be thick tailings (accounting for 40%) the filling underground goaf and the tailing cemented filling studding of hydraulic vortex flow devices classification, in the centrifugal filtration of efficient centrifugal filter, thin dry sand and enclosing pulls the fine sand that precipitates in the band and is deposited in and selects near the factory on the hillside, and earthing is built up fields;
B, efficient centrifugal filtered water and mine tailing stock tank overflow water precipitate fine sand in sedimentation basin, carry out 70%～80% tailing water that B-grade sewage handles and send back to and select factory to reuse in sedimentation basin, treatment tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96115223 CN1162505A (en) | 1996-04-12 | 1996-04-12 | Treating process of tailings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96115223 CN1162505A (en) | 1996-04-12 | 1996-04-12 | Treating process of tailings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1162505A true CN1162505A (en) | 1997-10-22 |
Family
ID=5122503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96115223 Pending CN1162505A (en) | 1996-04-12 | 1996-04-12 | Treating process of tailings |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1162505A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100523433C (en) * | 2006-04-05 | 2009-08-05 | 杜剑 | Tail ore stock area structure with sewage percolation and resource regeneration |
| CN101353885B (en) * | 2008-09-02 | 2010-04-21 | 金堆城钼业股份有限公司 | Tailings reservoir filling method |
| CN101892862A (en) * | 2010-06-23 | 2010-11-24 | 华唯金属矿产资源高效循环利用国家工程研究中心有限公司 | Full tailing filling method in large goafs |
| CN101708483B (en) * | 2009-11-07 | 2012-04-25 | 核工业烟台同兴实业有限公司 | Tailing dry-heaping equipment and processing technique thereof |
| CN104480948A (en) * | 2014-12-11 | 2015-04-01 | 广西华银铝业有限公司 | Tailing heap discharge method combined with dry heaping and wet discharging |
| CN106284373A (en) * | 2016-08-30 | 2017-01-04 | 金堆城钼业股份有限公司 | A kind of method of construction of Tailings Dam |
| 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 |
| CN112012788A (en) * | 2020-09-23 | 2020-12-01 | 中南大学 | Tailing filling system based on mine slope and steep slope terrain and construction method |
| CN112112648A (en) * | 2020-08-24 | 2020-12-22 | 东北大学秦皇岛分校 | Mining method of large-water underground ore body |
| CN113426813A (en) * | 2021-07-14 | 2021-09-24 | 河南发恩德矿业有限公司 | Non-waste processing method for lead-zinc ore mining |
| CN114293990A (en) * | 2022-01-04 | 2022-04-08 | 长沙有色冶金设计研究院有限公司 | Method for filling open pit |
-
1996
- 1996-04-12 CN CN 96115223 patent/CN1162505A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100523433C (en) * | 2006-04-05 | 2009-08-05 | 杜剑 | Tail ore stock area structure with sewage percolation and resource regeneration |
| CN101353885B (en) * | 2008-09-02 | 2010-04-21 | 金堆城钼业股份有限公司 | Tailings reservoir filling method |
| CN101708483B (en) * | 2009-11-07 | 2012-04-25 | 核工业烟台同兴实业有限公司 | Tailing dry-heaping equipment and processing technique thereof |
| CN101892862A (en) * | 2010-06-23 | 2010-11-24 | 华唯金属矿产资源高效循环利用国家工程研究中心有限公司 | Full tailing filling method in large goafs |
| CN101892862B (en) * | 2010-06-23 | 2012-05-30 | 华唯金属矿产资源高效循环利用国家工程研究中心有限公司 | Full tailing filling method in large goafs |
| CN104480948A (en) * | 2014-12-11 | 2015-04-01 | 广西华银铝业有限公司 | Tailing heap discharge method combined with dry heaping and wet discharging |
| CN106284373A (en) * | 2016-08-30 | 2017-01-04 | 金堆城钼业股份有限公司 | A kind of method of construction of Tailings Dam |
| 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 |
| CN112112648A (en) * | 2020-08-24 | 2020-12-22 | 东北大学秦皇岛分校 | Mining method of large-water underground ore body |
| CN112012788A (en) * | 2020-09-23 | 2020-12-01 | 中南大学 | Tailing filling system based on mine slope and steep slope terrain and construction method |
| CN113426813A (en) * | 2021-07-14 | 2021-09-24 | 河南发恩德矿业有限公司 | Non-waste processing method for lead-zinc ore mining |
| CN114293990A (en) * | 2022-01-04 | 2022-04-08 | 长沙有色冶金设计研究院有限公司 | Method for filling open pit |
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