CN105396685A - Dry discharge technology for phosphate tailings generated during mineral separation - Google Patents
Dry discharge technology for phosphate tailings generated during mineral separation Download PDFInfo
- Publication number
- CN105396685A CN105396685A CN201510962902.8A CN201510962902A CN105396685A CN 105396685 A CN105396685 A CN 105396685A CN 201510962902 A CN201510962902 A CN 201510962902A CN 105396685 A CN105396685 A CN 105396685A
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- Prior art keywords
- concentrator
- pulp
- tailing
- dry
- ore
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
- B03B9/06—General arrangement of separating plant, e.g. flow sheets specially adapted for refuse
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D3/00—Differential sedimentation
- B03D3/06—Flocculation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/002—Coagulants and Flocculants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2203/00—Specified materials treated by the flotation agents; specified applications
- B03D2203/02—Ores
- B03D2203/04—Non-sulfide ores
- B03D2203/06—Phosphate ores
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a dry discharge technology for phosphate tailings generated during mineral separation, belonging to the field of phosphorite mineral processing. According to the technology, phosphate tailing pulp subjected to flotation is firstly concentrated through a concentrator; a flocculant with the concentration of 0-0.1% is added to accelerate particle sedimentation; overflow water of the concentrator flows back to the mineral separation production procedure for recycle; the concentration of the pulp is improved to be above 25% after the pulp is concentrated through the concentrator; the pulp is discharged into a pulp storage tank, and then is pumped into a full-opening-type high-efficient automatic filter press in a high-pressure manner through a slurry pump for dehydration and filtration; filter liquor flows back to the concentrator; and filter cakes obtained after filtration are dumped into a belt conveyor at the lower end of the filter press through a designed automatic slag dumping device, and are sent to a tailing storage yard or a stope for backfilling, so that the dry discharge of the floatation phosphate tailings is realized. By adopting the method, water in the tailing pulp can be effectively separated for recycle; and the moisture content of separated tailing slags is smaller than 15%, and requirements of loading, unloading and transporting on automobiles and trains, mine dry storage and stope backfilling are fully met. By utilizing the technology, the phosphate tailings generated during mineral separation can be dry-discharged after effective recovery of water resources, and a condition is provided for comprehensive utilization of tailings.
Description
Technical field
The invention belongs to phosphorus ore mineral manufacture field, be related specifically to a kind of dry drainage technique of ore dressing phosphorus mine tailing.
Background technology
China's phosphate rock resource enriches, and the reserves of rock phosphate in powder occupy the second in the world, are only second to Morocco.Although the gross reserves of China's rock phosphate in powder is very large, great majority belong to middle and low grade bauxite, and ore deposit needs by obtaining qualified phosphorus concentrate after ore dressing for follow-up phosphorous chemical industry greatly.The ore dressing mainly floatation ore dressing of phosphorus ore, the productive rate of phosphorus concentrate between 40-60%, that is, ore dressing can produce the phosphorus mine tailing of 50% nearly, and mine tailing granularity is very thin, granularity is generally about-0.043mm>85%, and settling ratio is more difficult.In the past, the phosphorus mine tailing after ore dressing was all wet to drain into Tailings Dam, and Tailings Slurry deposits by gravity natural subsidence gradually at Tailings Dam.Tailings Dam takies a large amount of soil, and the construction cost on dam, storehouse is high, the easy drain evaporation of water resource in mine tailing and cause cyclic utilization rate low, and there is safety and environmental protection risk.In recent years, some new tailings discharging methods are there is, such as: lotion discharge, dewatering screen dehydration discharge, Filter Press discharge etc.But because the density of phosphorus mine tailing own is little, granularity is thin again, clay content is large, and adopt lotion discharge to be difficult to the lotion obtaining enough high concentrations, dewatering screen cannot play the effect of dehydration to phosphorus mine tailing, and discharge after adopting conventional Filter Press, there is filter residue moisture high (>20%), be difficult to transport and stack, efficiency of press filtering is low, the problems such as labor strength is high, so be also difficult to the production requirement meeting phosphorus tailing dry row.
Summary of the invention
The object of the invention is to overcome prior art deficiency, provides a kind of dry drainage technique of ore dressing phosphorus mine tailing.
The treatment process that the present invention adopts " flocculant+concentrator concentrate+enters the efficient Filter Press+conveying of stock pump high pressure press-in ore pulp+full-open type ".
Technical solution of the present invention is: first concentrated through concentrator by the phosphorus mine tailing ore pulp after flotation, add 0-0.1% flocculant and accelerate particles settling, concentrator overflow water returns mineral processing production flow cycles and utilizes, ore pulp concentration after concentrator is concentrated brings up to more than 25%, enter ore pulp storage tank, pump into the efficient automatic pressure filter of full-open type by Pulp pump high pressure and carry out dewatering and filtering, filtrate returns concentrator, mine tailings moisture <15% after filtering, the automatic clinker-removing device of filter cake after filtration through designing is discharged to the belt conveyor of filter press lower end, and be admitted to tailings stack or stope backfill, thus realize the dry row of flotation phosphate mine tailing, slag moisture controls below 15%.
Described ore pulp enter concentrator concentrated before, add the polyacrylamide of 0-0.1% as flocculant.
The present invention first utilizes concentrator first by flotation phosphate mine tailing slurry concentrating, reclaim most of water, pulp density is brought up to more than 25% simultaneously, then, ore pulp is pumped into the efficient automatic pressure filter of full-open type by ore pulp storage tank and Pulp pump high pressure and carries out dewatering and filtering, filtrate returns concentrator, mine tailings moisture <15% after filtering, being unloaded by filter cake by the filter cake automatic drawing unloading mechanism of design falls on belt conveyor, and be transported to tailings stack, thus realize the Separation of Solid and Liquid of mine tailing ore pulp, slag moisture controls below 15%, meet stope backfill completely, tailing dry-heaping and Making Use of Tailings utilize requirement.
Accompanying drawing explanation
Fig. 1 tailing dry row of the present invention flow chart.
Detailed description of the invention
Ore dressing phosphorus tailing dry drainage technique of the present invention utilizes concentrator first by flotation phosphate mine tailing slurry concentrating, reclaim most of water, pulp density is brought up to more than 25% simultaneously, then, ore pulp is pumped into the efficient automatic pressure filter of full-open type by ore pulp storage tank and Pulp pump high pressure and carries out dewatering and filtering, filtrate returns concentrator, mine tailings moisture <15% after filtering, by the filter cake automatic drawing unloading mechanism of design, filter cake is unloaded on belt conveyor, and be transported to tailings stack, thus realize the Separation of Solid and Liquid of mine tailing ore pulp, meet stope backfill and tailing dry-heaping requirement completely, realize dry row's object of ore dressing phosphorus mine tailing.
The treatment process of described employing " flocculant+concentrator concentrate+enters the efficient Filter Press+conveying of stock pump high pressure press-in ore pulp+full-open type ", flow process as shown in Figure 1.
Described ore pulp enter concentrator concentrated before, add the polyacrylamide of 0-0.1% as flocculant.
Phosphorus mine tailing after ore dressing of the present invention, after the appropriate flocculant of interpolation, concentrator is adopted to concentrate, reclaim most of water, pulp density is brought up to more than 25% simultaneously, then, ore pulp is pumped into the efficient automatic pressure filter of full-open type by ore pulp storage tank and Pulp pump high pressure and carries out dewatering and filtering, filtrate returns concentrator, after after press filtration, filter residue moisture reaches <15%, unloaded fallen on belt conveyor by the filter residue automatic drawing unloading mechanism of design, and be transported to the dry heap of tailings stack or stope backfill, thus realize the dry of mine tailing and drain heap.
Embodiment 1 (ore dressing phosphorus tailing dry drainage technique is applied to Yuntianhua Group ore dressing plant, Yunnan)
Flotation phosphate mine tailing, after the flocculant polyacrylamide of interpolation 0.05%, enter 32 meters of concentrators to concentrate, 5 rice diameter ore pulp storage tanks are entered after pulp density reaches 35% after concentrated, with after pump into automatic pressure filter through Pulp pump and carry out press filtration, filter cake moisture 13.6% after press filtration, sends into mine tailing stock ground through belt conveyor, is used for backfill by Automobile Transportation.Concentrator overflow water recycles in mineral processing production, and filter press filtrate returns concentrator and also gets back in mineral processing production, and flow process as shown in Figure 1.
Embodiment 2
Flotation phosphate mine tailing, do not add flocculant, enter 32 meters of concentrators to concentrate, 5 rice diameter ore pulp storage tanks are entered after pulp density reaches 26% after concentrated, with after pump into automatic pressure filter through Pulp pump and carry out press filtration, filter cake moisture 14.1% after press filtration, sends into mine tailing stock ground through belt conveyor, is used for backfill by Automobile Transportation.Concentrator overflow water recycles in mineral processing production, and filter press filtrate returns concentrator and also gets back in mineral processing production, and flow process as shown in Figure 1.
Claims (3)
1. an ore dressing phosphorus tailing dry drainage technique, the phosphorus mine tailing ore pulp after flotation is it is characterized in that first to concentrate through concentrator, add 0-0.1% flocculant and accelerate particles settling, concentrator overflow water returns mineral processing production flow cycles and utilizes, ore pulp concentration after concentrator is concentrated brings up to more than 25%, enter ore pulp storage tank, pump into the efficient automatic pressure filter of full-open type by Pulp pump high pressure and carry out dewatering and filtering, filtrate returns concentrator, mine tailings moisture <15% after filtering, the automatic clinker-removing device of filter cake after filtration through designing is discharged to the belt conveyor of filter press lower end, and be admitted to tailings stack or stope backfill, complete the dry row of flotation phosphate mine tailing, its slag moisture controls below 15%.
2. a kind of ore dressing phosphorus tailing dry drainage technique according to claim 1, it is characterized in that ore pulp enter concentrator concentrated before, add the polyacrylamide of 0-0.1% as flocculant.
3. a kind of ore dressing phosphorus tailing dry drainage technique according to claim 1, is characterized in that technique adopts flocculant+concentrator to concentrate+enter the handling process of the efficient Filter Press+conveying of stock pump high pressure press-in ore pulp+full-open type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510962902.8A CN105396685A (en) | 2015-12-21 | 2015-12-21 | Dry discharge technology for phosphate tailings generated during mineral separation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510962902.8A CN105396685A (en) | 2015-12-21 | 2015-12-21 | Dry discharge technology for phosphate tailings generated during mineral separation |
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|---|---|
| CN105396685A true CN105396685A (en) | 2016-03-16 |
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| CN201510962902.8A Pending CN105396685A (en) | 2015-12-21 | 2015-12-21 | Dry discharge technology for phosphate tailings generated during mineral separation |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108328793A (en) * | 2018-02-08 | 2018-07-27 | 瓮福达州化工有限责任公司 | A kind of mine tailing wastewater cyclic utilization system |
| CN109621500A (en) * | 2018-12-06 | 2019-04-16 | 包头钢铁（集团）有限责任公司 | A method of improving deep cone thickener underflow density |
| CN110292807A (en) * | 2018-03-22 | 2019-10-01 | 南京梅山冶金发展有限公司 | Superfine Tailing thickening dewatering process |
| CN112958269A (en) * | 2021-03-24 | 2021-06-15 | 武定泽源矿业有限公司 | Sand ilmenite tailing separation system and treatment process |
| CN115301678A (en) * | 2022-09-14 | 2022-11-08 | 云南磷化集团有限公司 | Resource utilization method for ultrafine flotation phosphorus tailings |
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| CN102319717A (en) * | 2011-06-19 | 2012-01-18 | 湖北三宁化工股份有限公司 | Method for dryly discharging phosphate tailing |
| CN202876534U (en) * | 2012-09-29 | 2013-04-17 | 山东黄金集团有限公司 | Tailing dry emission system |
| WO2013150815A1 (en) * | 2012-04-06 | 2013-10-10 | 株式会社 東芝 | Water treatment method and water treatment device |
| CN103657840A (en) * | 2013-07-10 | 2014-03-26 | 中蓝连海设计研究院 | Dry type discharge method of phosphorus ore tailings |
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2015
- 2015-12-21 CN CN201510962902.8A patent/CN105396685A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3711472B1 (en) * | 2004-12-28 | 2005-11-02 | 株式会社イーエムエス | Sorting method of crushing industrial waste using flowing water class and settling velocity |
| CN1792830A (en) * | 2005-10-21 | 2006-06-28 | 赵树彦 | Tech. for treating coal mud water by tow section concentration, tow section recovery |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108328793A (en) * | 2018-02-08 | 2018-07-27 | 瓮福达州化工有限责任公司 | A kind of mine tailing wastewater cyclic utilization system |
| CN110292807A (en) * | 2018-03-22 | 2019-10-01 | 南京梅山冶金发展有限公司 | Superfine Tailing thickening dewatering process |
| CN110292807B (en) * | 2018-03-22 | 2022-01-25 | 南京梅山冶金发展有限公司 | Concentration dehydration process for superfine tailings |
| CN109621500A (en) * | 2018-12-06 | 2019-04-16 | 包头钢铁（集团）有限责任公司 | A method of improving deep cone thickener underflow density |
| CN112958269A (en) * | 2021-03-24 | 2021-06-15 | 武定泽源矿业有限公司 | Sand ilmenite tailing separation system and treatment process |
| CN115301678A (en) * | 2022-09-14 | 2022-11-08 | 云南磷化集团有限公司 | Resource utilization method for ultrafine flotation phosphorus tailings |
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Application publication date: 20160316 |