CN103240183A - Settlement and dehydration technology for direct flotation concentrate and tailings of collophanite - Google Patents
Settlement and dehydration technology for direct flotation concentrate and tailings of collophanite Download PDFInfo
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- CN103240183A CN103240183A CN2013101929345A CN201310192934A CN103240183A CN 103240183 A CN103240183 A CN 103240183A CN 2013101929345 A CN2013101929345 A CN 2013101929345A CN 201310192934 A CN201310192934 A CN 201310192934A CN 103240183 A CN103240183 A CN 103240183A
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Abstract
The invention relates to a settlement and dehydration technology for direct flotation concentrate and tailings of collophanite. The settlement and dehydration technology includes the steps: enabling pulp of the concentrate and the tailings to enter a pump tank of a pulp conveying slurry pump after the collophanite is separated in a flotation machine; respectively adding concentrated sulfuric acid into the pulp of the concentrate and the tailings; respectively adding anionic polyacrylamide solution with 0.1-0.2% mass concentration after the concentrated sulfuric acid is added into the pulp; and respectively dehydrating the pulp of the concentrate and the tailings by a belt thickener-press filter. The quantity of the concentrated sulfuric acid added into the pulp of the concentrate is 600-700g/m<3> of the pulp, the quantity of the concentrated sulfuric acid added into the pulp of the tailings is 450-500g/m<3> of the pulp, and the quantity of the anionic polyacrylamide solution added into the pulp of the concentrate and the pulp of the tailings is 60-90g/m<3> of the pulp. The settlement and dehydration technology can finish dehydration processes such as concentration and filtration once, and has the advantages of low investment, small occupied area, high device use efficiency, short construction period, simplicity in operation, high automation degree and the like.
Description
Technical field
The present invention relates to a kind of sedimentation, dewatering process of collophane direct flotation concentrate and tailings.
Background technology
Yunnan Province is that the present phosphorus ore of China is possessed the maximum province of stock number at present, accounts for China's phosphorus ore and possesses 23.4% of total resources.Yunnan area phosphorus ore is based on collophane, because special climate and geological structure, has that reserves are big, grade is low, characteristics such as high weathering, disseminated grain size are thin, morphosis complexity, and therefore most of phosphorus ores all need to use beneficiation method that tcrude ore is processed.
Floatation is a kind of important method of collophane ore dressing, domestic phosphate rock floating factory when the flotation collophane, mainly contain single direct flotation flow process, single reverse flotation flowsheet, just-reverse flotation flowsheet, anti--direct flotation flow process and two reverse flotation flowsheets etc.
Low grade collophanite carries out direct flotation and sorts when handling in to the high weathering in Yunnan area, and the difficulty of flotation concentrate and tailings dewatering is big, cost is higher.At first, collophane direct flotation concentrate and tailings slurry pH higher (usually 9-10) uses polyacrylamide flocculant adding method commonly used can not make ore pulp realize solid-liquid separation effect preferably, and can follow-up concentrate filtration be exerted an influence.Secondly, normally used flotation concentrate and tailings dewatering equipment as concentrator, ceramic filter etc., have shortcomings such as investment is big, floor space is many, the equipment service efficiency is low, the construction period is long.
Summary of the invention
Problem to be solved by this invention is to provide a kind of sedimentation, dewatering process simple, economical, effectively collophane direct flotation concentrate and tailings at above-mentioned prior art deficiency, makes collophane direct flotation concentrate and tailings ore pulp realize Separation of Solid and Liquid.
For achieving the above object, the technical solution adopted in the present invention is: collophane is finished after the sorting in flotation device, the concentrate and tailings ore pulp enters ore pulp and carries in the pump pond of slag stock pump, add mass concentration respectively in the concentrate and tailings ore pulp and be 96-98% the concentrated sulfuric acid, the addition of the concentrated sulfuric acid is respectively 600-700g/
The m3 ore pulpWith 450-500g/
The m3 ore pulpIn ore pulp, add the concentrated sulfuric acid and adjust pH value to 7-8, enter abundant mixing in the belt thickener press filter buffering agitator then, adding mass concentration subsequently respectively is 0.1-0.2% anion-polyacrylamide solution, and the addition of anion-polyacrylamide solution is 60-90g/
The m3 ore pulp, carry out the online processing of technology, respectively the concentrate and tailings ore pulp is carried out processed with belt thickener press filter then.
Dewatering Principle of the present invention is: at first, contain a large amount of hydroxide ions in the direct flotation ore pulp.After adding the concentrated sulfuric acid, the concentrated sulfuric acid is uniformly dispersed in ore pulp, and hydrolysis produces a large amount of hydrogen ions.Hydroxide ion can be removed with hydrogen ion generation neutralization reaction in the ore pulp, and reaction equation is as follows: H
++ OH
-=H
2O.Secondly, under the condition of neutral ore pulp, add anion-polyacrylamide, the polarity group of containing some in the polyacrylamide strand, can produce various suction-operateds to the fine mineral that suspends in water surface, make and build bridge between mineral or make fine mineral be condensed into big flocculate by charging neutrality.Ore pulp after the flocculation enters belt thickener press filter, and---dehydration---processes such as discharging through cloth are finished separating of mineral in the collophane direct flotation concentrate and tailings ore pulp and waste water.After Separation of Solid and Liquid, flotation concentrate and mine tailing are that final products are discharged the windrow of going forward side by side and deposited with the cake form, and waste water then enters water treatment system and carries out recycling.
The present invention compares with sedimentation, the dewatering process of existing other collophane direct flotation concentrate and tailings, can make the fine fraction ore pulp realize solid-liquid separation effect preferably, and can disposablely finish dehydrations such as concentrated, filtration, have that investment is little, floor space is few, an equipment service efficiency height, short, simple to operate, automaticity advantages of higher of construction period.
Description of drawings
Fig. 1 is process chart of the present invention.
The specific embodiment
In order to understand the present invention better, further set forth content of the present invention below in conjunction with embodiment, but content of the present invention is not limited only to following case study on implementation.
Embodiment 1:
At Yunnan high weathering silico-calcium matter collophane, adopt the normal temperature direct floatation process to sort, the concentrate pulp after the flotation enters ore pulp and carries in the pump pond of slag stock pump, adds 98% concentrated sulfuric acid 700g/
The m3 ore pulp, in the concentrated sulfuric acid and after, concentrate pulp pH value is down to 7 from 10, enters afterwards in the buffering agitator of belt thickener press filter, adds 0.2% anion-polyacrylamide solution 90g/ again
The m3 ore pulp, the pressure stage that enters belt thickener press filter is then handled.After belt thickener press filter is handled, the concentrate filter cake is moisture≤and 30%, obtain final direct flotation phosphorus concentrate product.Solid content in the waste water≤0.2% can be used as the backwater circulation utilization after treatment.
Simultaneously, the mine tailing ore pulp after the flotation enters ore pulp and carries in the pump pond of slag stock pump, adds 98% concentrated sulfuric acid 500g/
The m3 ore pulp, in the concentrated sulfuric acid and after, concentrate pulp pH value is down to 7 from 9, enters afterwards in the buffering agitator of belt thickener press filter, adds 0.2% anion-polyacrylamide solution 90g/ again
The m3 ore pulp, the pressure stage that enters belt thickener press filter is then handled.After belt thickener press filter is handled, tailing cake is moisture≤and 35%, obtain final direct flotation phosphorus product from failing.Solid content in the waste water≤0.5% can be used as the backwater circulation utilization after treatment.
Embodiment 2:
Adopt the normal temperature direct floatation process to sort with collophane, the concentrate pulp after the flotation enters ore pulp and carries in the pump pond of slag stock pump, adds 96% concentrated sulfuric acid 600g/
The m3 ore pulp, in the concentrated sulfuric acid and after, concentrate pulp pH value is down to 7 from 10, enters afterwards in the buffering agitator of belt thickener press filter, adds 0.1% anion-polyacrylamide solution 60g/ again
The m3 ore pulp, the pressure stage that enters belt thickener press filter is then handled.After belt thickener press filter is handled, the concentrate filter cake is moisture≤and 30%, obtain final direct flotation phosphorus concentrate product.Solid content in the waste water≤0.2% can be used as the backwater circulation utilization after treatment.
Simultaneously, the mine tailing ore pulp after the flotation enters ore pulp and carries in the pump pond of slag stock pump, adds 96% concentrated sulfuric acid 450g/
The m3 ore pulp, in the concentrated sulfuric acid and after, the mine tailing slurry pH is down to 7 from 9, enters afterwards in the buffering agitator of belt thickener press filter, adds 0.1% anion-polyacrylamide solution 60g/ again
The m3 ore pulp, the pressure stage that enters belt thickener press filter is then handled.After belt thickener press filter is handled, tailing cake is moisture≤and 35%, obtain final direct flotation phosphorus product from failing.Solid content in the waste water≤0.5% can be used as the backwater circulation utilization after treatment.
Claims (1)
1. sedimentation, the dewatering process of a collophane direct flotation concentrate and tailings, it is characterized in that being undertaken by following: collophane is finished in flotation device after the sorting, add mass concentration respectively in the concentrate and tailings ore pulp and be 96-98% the concentrated sulfuric acid, the addition of the concentrated sulfuric acid is respectively 600-700g/
The m3 ore pulpAnd 450-500g/
The m3 ore pulp, in ore pulp, add after the concentrated sulfuric acid, adding mass concentration respectively is 0.1-0.2% anion-polyacrylamide solution, the addition of anion-polyacrylamide solution is 60-90g/
The m3 ore pulp, carry out the online processing of technology, respectively the concentrate and tailings ore pulp is carried out processed with belt thickener press filter then.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310192934.5A CN103240183B (en) | 2013-05-23 | 2013-05-23 | The sedimentation of a kind of direct flotation concentrate and tailings of collophanite, dewatering process |
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| CN201310192934.5A CN103240183B (en) | 2013-05-23 | 2013-05-23 | The sedimentation of a kind of direct flotation concentrate and tailings of collophanite, dewatering process |
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| CN103240183A true CN103240183A (en) | 2013-08-14 |
| CN103240183B CN103240183B (en) | 2016-08-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112007747A (en) * | 2019-09-25 | 2020-12-01 | 中蓝连海设计研究院有限公司 | Flotation method for silicon-calcium collophanite without tailing pond |
Citations (3)
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| CN102219198A (en) * | 2011-05-03 | 2011-10-19 | 湖北富邦科技股份有限公司 | Multifunctional sinking agent used in production of phosphoric acid by wet method |
| CN102491472A (en) * | 2011-11-24 | 2012-06-13 | 瓮福（集团）有限责任公司 | Method for recovering sewage slag and preparing phosphate concentrate by using sewage slag |
| CN102701338A (en) * | 2012-06-25 | 2012-10-03 | 杨德敏 | Advanced treatment process for coking wastewater |
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2013
- 2013-05-23 CN CN201310192934.5A patent/CN103240183B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102219198A (en) * | 2011-05-03 | 2011-10-19 | 湖北富邦科技股份有限公司 | Multifunctional sinking agent used in production of phosphoric acid by wet method |
| CN102491472A (en) * | 2011-11-24 | 2012-06-13 | 瓮福（集团）有限责任公司 | Method for recovering sewage slag and preparing phosphate concentrate by using sewage slag |
| CN102701338A (en) * | 2012-06-25 | 2012-10-03 | 杨德敏 | Advanced treatment process for coking wastewater |
Non-Patent Citations (3)
| Title |
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| 严发真等: "磷矿浮选废水治理的探索与实践", 《化工矿物与加工》, no. 9, 31 December 1999 (1999-12-31) * |
| 欧阳坚: "水解聚丙烯酰胺对磷酸盐矿物的絮凝作用", 《矿产综合利用》, no. 2, 31 December 1993 (1993-12-31) * |
| 马青山等: "《絮凝化学和絮凝剂》", 31 March 1988, article "PH值对絮凝作用的影响" * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112007747A (en) * | 2019-09-25 | 2020-12-01 | 中蓝连海设计研究院有限公司 | Flotation method for silicon-calcium collophanite without tailing pond |
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| CN103240183B (en) | 2016-08-03 |
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Address after: 650300, Yunnan province Kunming Anning County Street Subdistrict Office Small Xinqiao village Hou Jiaqing Applicant after: YUNNAN SANMING XINJIANG MINING Co.,Ltd. Address before: 650300, Yunnan province Kunming Anning County Street Subdistrict Office Small Xinqiao village Hou Jiaqing Applicant before: YUNNAN SANMING XINJIANG MINING Co.,Ltd. |
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Free format text: CORRECT: APPLICANT; FROM: YUNNAN SANMING XINJIANG MINE INDUSTRY CO., LTD. TO: YUNNAN SANMING XINJIANG PHOSPHORUS INDUSTRY CO., LTD. |
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