CN102757139A - Solid-liquid separation method for bauxite positive flotation and desilication tailing pulp - Google Patents
Solid-liquid separation method for bauxite positive flotation and desilication tailing pulp Download PDFInfo
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- CN102757139A CN102757139A CN2012102428819A CN201210242881A CN102757139A CN 102757139 A CN102757139 A CN 102757139A CN 2012102428819 A CN2012102428819 A CN 2012102428819A CN 201210242881 A CN201210242881 A CN 201210242881A CN 102757139 A CN102757139 A CN 102757139A
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Abstract
The invention discloses a solid-liquid separation method for bauxite positive flotation and desilication tailing pulp. The solid-liquid separation method makes full use of the primary flocculation and secondary hydrophobic properties of anionic and cationic polyacrylamide, and consists of a section of reaction, a section of settlement and a group of filter pressing. The solid-liquid separation method has the advantages that by making full use of the primary flocculation and secondary hydrophobic properties of the anionic and cationic polyacrylamide, the solid-liquid separation method not only separates a lot of ultra-fine mineral particles contained in tailing pulp, and more importantly adsorbs a third of organic matter in liquid into floccules so as to achieve the purpose of purifying the backwater.
Description
Technical field
The invention belongs to ore dressing field, be specifically related to a kind of bauxite direct-flotation desiliconisation mine tailing slurry solid-liquid separating method.
Background technology
China's bauxite resource is abundant; The reserves of having verified are 2,300,000,000 tons; 70% above A/S low-grade diaspore type bauxite in 4-7; And in low-grade bauxite be not suitable for simple, economic producing aluminium oxide by bayer, through for many years effort tackling key problem, China scientific worker has created the ore dressing-producing aluminium oxide by bayer technology of suitable China ore resource.Mineral dressing and silicon removal of bauxite also has quite a few mine tailing slurry except obtaining bauxite concentrate.The industrial production scene shows, even place a few days, also is difficult to see the interface of tailing slurry settlement, thus depend merely on mine tailing slurry natural subsidence method can not be with its solid-liquid separation.Bauxite forward flotation ore dressing and desiliconizing mine tailing slurry pH value is generally at 9.0-9.6, and solids content is 10-15%, is the suspension liquid shape.The mine tailing slurry is made up of solid phase and liquid phase.The liquid phase of mine tailing slurry mainly contains compositions such as yellow soda ash, Sodium hexametaphosphate 99, sodium oleate, SEPIGEL 305, mainly is that inorganic salt and organic salt are formed.The solid phase of mine tailing slurry mainly is made up of diaspore, kaolinite, illite, agalmatolite, anatase octahedrite, rhombohedral iron ore, calcite, rutile; Mine tailing slurry solid particle size distribution situation is: account for 0-3% more than 200 orders; 200 orders-400 order accounts for 0.5-5%, accounts for 92-98% below 400 orders; Mine tailing slurry solid state chemistry composition is:
At present; On industrial production to bauxite direct-flotation desiliconisation mine tailing slurry solid-liquid separation treating method be: the mine tailing slurry is regulated solids concn to 3-7% with backwater; Add pH value adjustment agent or flocculating aids, add the anion-polyacrylamide flocculation agent again, in the high rate settling primary dewatering; Underflow send the pressure filter second dehydration, the overflow journey of backflowing.There is following deficiency in this treating method:
1, need pH value be adjusted to 6-8 from 9-9.6, generally with the sulfuric acid adjustment, except that itself increased working routine, cost, prior system added sulfate radical, influences flotation effect in the industry, even the sulfate radical outburst causes the groove that collapses;
2, the overflow seston is higher, about 1-3g/l;
3, organism is higher in the overflow, and solution is muddy;
4, overflow pH value 6-8 when the backwater reuse, in order to satisfy original ore pulp batching, needs to increase yellow soda ash and adjusts pH value 9-9.6, increases workload and cost.
Through studying and judging of character that the bauxite direct-flotation desiliconisation mine tailing is mineralized, mainly there are following three aspect problems in existing bauxite direct-flotation desiliconisation mine tailing slurry solid-liquid separation industrial production:
1, the backwater object height that swims, generally speaking, the backwater seston is at 1-3g/l; This is because in the ore concentration of bauxite process; The mine tailing slurry contains a large amount of, superfine mineral grain, and these granular masss are little, specific surface area is big, dispersity is high, form metastable suspension-s;
2, residual organic matter is high; Because add the surface property that flotation reagent is regulated mineral in the ore concentration of bauxite technology, collecting agent, dispersion agent, flocculation agent, mineral substance are caught mutually, dispersiveness is suspended in the liquid phase admirably; Cause backwater muddy, make the organism accumulation more and more serious;
3, the system water cycle efficiency is low, production efficiency is low, and object height, residual organic matter height because backwater swims make backwater viscosity become big; Cause being difficult to improve the concentration of raw pulp; Output is on the low side, water cycle efficient is low, impels production cost higher, the waste great amount of water resources.
Summary of the invention
The present invention is exactly a kind of bauxite direct-flotation desiliconisation mine tailing slurry solid-liquid separating method that provides in order to address the above problem.
Be achieved in that a kind of bauxite direct-flotation desiliconisation mine tailing slurry solid-liquid separation way in order to address the above problem the present invention; Making full use of yin, yang ionic SEPIGEL 305 once flocculates; The secondary hydrophobic property is made up of one section reaction, one section sedimentation, one section press filtration.
One section reaction: refer to scan underflow under the backwater dilution, with the anion-polyacrylamide effect, purpose is to let seston produce big and many floc sedimentation fast, simultaneously other material co-precipitation of part;
One section sedimentation: overflow is under the cationic-type polyacrylamide effect after referring to one section sedimentation; Inorganic matter and organic matter that absorption suspends; The proportion of floc sedimentation is increased; Hydrophobic performance is better; Make overflow limpid bright; Floating material further descends, and the organic matter that the maximum characteristics of one section sedimentation are overflow has 1/3rd to be adsorbed in the floc sedimentation;
A set of filter press: a settlement underflow into presses, in order to achieve solid-liquid separation tailings slurry.It is as clear as crystal to filtrate, and delivers to return flume; Filter cake moulding caking send the mine tailing stockyard.
The present invention is complete, and concrete technology is:
A kind of bauxite direct-flotation desiliconisation mine tailing slurry solid-liquid separation way may further comprise the steps:
1, one section reactive tank is φ 10000 * 15800mm, turns over the upflow tube trough on flat, bottom has.The pass is closed and is turned over upflow tube, opens one section reaction of φ 10000 * 15800mm and stirs, and mixing speed is 24 rev/mins, with 120m
3/ h sweeps stream end liquid and squeezes into one section reactive tank of φ 10000 * 15800mm, squeezes into 2-3 and doubly sweeps the long-pending backwater of stream end liquid, adds 1/80 simultaneously and sweeps 0.1 long-pending ﹪ anion-polyacrylamide of stream end liquid;
2, treat that one section reactive tank of φ 10000 * 15800mm is full, turn over upflow tube in the unlatching, flow to one section φ 10000 * 15800mm subsider through upflow tube;
3, one section subsider is the non-maintaining no transmission subsiders of φ 10000 * 15800 mm, and wherein lower cone is 7000mm.One section reactive tank overflow, through on turn over upflow tube and get into one section subsider.
4, one section subsider is the top intermediate feed, adds 1/320 simultaneously at the intermediate feed pipe and sweeps 0.1 long-pending ﹪ cationic-type polyacrylamide of stream end liquid;
5, one section subsider overflow gets into return flume;
6, one section subsider underflow gets into one section pressure filter, and the filtrating that obtains through one section pressure filter gets into return flume, and filter cake is to the tailing cake stockyard.
Beneficial effect of the present invention is:
1, advantage of the present invention
Advantage of the present invention; Make full use of yin, yang ionic SEPIGEL 305 characteristic; Once flocculation, secondary is hydrophobic, not only contains a large amount of, superfine mineral grain to the mine tailing slurry and separates; Priorly also be adsorbed onto 1/3rd organism in the liquid in the floc sedimentation, always reach the purpose that purifies backwater.
2, effect of the present invention
The overflow seston is＜0.1 g/l, and the filtrating seston is＜0.1 g/l, and organic carbon is for reducing by 1/3, and the tailing cake water ratio is 15.5%.
Description of drawings
Fig. 1 is a kind of bauxite direct-flotation desiliconisation mine tailing slurry of the present invention solid-liquid separating method process flow sheet.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is further specified: as shown in Figure 1, to be example to area, Dengfeng, Henan bauxite direct-flotation desiliconisation mine tailing slurry solid-liquid separation, the staple of mine tailing is: Al
2O
339.98, SiO
230.75, A/S1.
30, mine tailing slurry concentration is 13.5%, the filtrating organic carbon is 120mg/l.
1, close on φ 10000 * 15800mm reactive tank and turn over upflow tube, open one section reactive tank of φ 10000 * 15800mm and stir, mixing speed is 24 rev/mins, with 120m
3/ h sweeps stream end liquid and squeezes into one section reactive tank of φ 10000 * 15800mm, squeezes into 300m
3The backwater of/h adds 1.5m simultaneously
3The 0.1 ﹪ anion-polyacrylamide of/h;
2, treat that one section reactive tank of φ 10000 * 15800mm is full, turn over upflow tube in the unlatching, flow to the intermediate feed pipe of one section φ 10000 * 15800mm subsider through upflow tube;
3, add 0.375m simultaneously at the intermediate feed pipe
3The 0.1 ﹪ cationic-type polyacrylamide of/h;
4, one section subsider overflow gets into return flume, and the overflow seston is 0.086 g/l, and organic carbon is 86mg/l;
5, one section subsider underflow gets into one section pressure filter;
6, the filtrating of one section pressure filter gets into return flume, and the filtrating seston is 0.072 g/, and organic carbon is 82mg/l;
7, the filter cake of one section pressure filter acquisition is to the tailing cake stockyard, and the tailing cake water ratio is 15.5%.
Claims (1)
1. a bauxite direct-flotation desiliconisation mine tailing slurry solid-liquid separation way makes full use of yin, yang ionic SEPIGEL 305 and once flocculates, and the secondary hydrophobic property is characterized in that: be made up of one section reaction, one section sedimentation, one group of filter-pressing process flow process; Concrete technical process is: (1), one section reactive tank are φ 10000 * 15800mm, turn over the upflow tube trough on flat, bottom has; The pass is closed and is turned over upflow tube, opens one section reaction of φ 10000 * 15800mm and stirs, and mixing speed is 24 rev/mins, with 120m
3/ h sweeps stream end liquid and squeezes into one section reactive tank of φ 10000 * 15800mm, squeezes into 2-3 and doubly sweeps the long-pending backwater of stream end liquid, adds 1/80 simultaneously and sweeps 0.1 long-pending ﹪ anion-polyacrylamide of stream end liquid;
(2), treat that one section reactive tank of φ 10000 * 15800mm is full, turn over upflow tube in the unlatching, flow to one section φ 10000 * 15800mm subsider through upflow tube;
(3), one section subsider is the non-maintaining no transmission subsiders of φ 10000 * 15800 mm, wherein lower cone is 7000mm, one section reactive tank overflow, through on turn over upflow tube and get into one section subsider;
(4), one section subsider is the top intermediate feed, add 1/320 simultaneously at the intermediate feed pipe and sweep 0.1 long-pending ﹪ cationic-type polyacrylamide of stream end liquid;
(5), one section subsider overflow gets into return flume;
(6), one section subsider underflow gets into one section pressure filter, the filtrating that obtains through one section pressure filter gets into return flume, filter cake is to the tailing cake stockyard.
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| CN2012102428819A CN102757139A (en) | 2012-07-15 | 2012-07-15 | Solid-liquid separation method for bauxite positive flotation and desilication tailing pulp |
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| CN2012102428819A CN102757139A (en) | 2012-07-15 | 2012-07-15 | Solid-liquid separation method for bauxite positive flotation and desilication tailing pulp |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103316760A (en) * | 2013-06-09 | 2013-09-25 | 云南文山铝业有限公司 | Method for processing monohydrallite ore washing gangue |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4569768A (en) * | 1983-10-07 | 1986-02-11 | The Dow Chemical Company | Flocculation of suspended solids from aqueous media |
| CN1621159A (en) * | 2004-12-28 | 2005-06-01 | 中国铝业股份有限公司 | Flotation gangue subsidence method of alumyte |
| CN101156996A (en) * | 2007-08-03 | 2008-04-09 | 中国铝业股份有限公司 | A method for the sedimentation of bauxite cradling tailings |
| CN101733200A (en) * | 2009-12-25 | 2010-06-16 | 中南大学 | Method for processing bauxite tailings by flocculating agent |
-
2012
- 2012-07-15 CN CN2012102428819A patent/CN102757139A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4569768A (en) * | 1983-10-07 | 1986-02-11 | The Dow Chemical Company | Flocculation of suspended solids from aqueous media |
| CN1621159A (en) * | 2004-12-28 | 2005-06-01 | 中国铝业股份有限公司 | Flotation gangue subsidence method of alumyte |
| CN101156996A (en) * | 2007-08-03 | 2008-04-09 | 中国铝业股份有限公司 | A method for the sedimentation of bauxite cradling tailings |
| CN101733200A (en) * | 2009-12-25 | 2010-06-16 | 中南大学 | Method for processing bauxite tailings by flocculating agent |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103316760A (en) * | 2013-06-09 | 2013-09-25 | 云南文山铝业有限公司 | Method for processing monohydrallite ore washing gangue |
| CN103316760B (en) * | 2013-06-09 | 2016-04-20 | 云南文山铝业有限公司 | To the method that bauxite washup mine tailing processes |
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Application publication date: 20121031 |