CN101306271A - Liquid solid separation method of alumyte slurry during mineral processing - Google Patents
Liquid solid separation method of alumyte slurry during mineral processing Download PDFInfo
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- CN101306271A CN101306271A CNA2008101154497A CN200810115449A CN101306271A CN 101306271 A CN101306271 A CN 101306271A CN A2008101154497 A CNA2008101154497 A CN A2008101154497A CN 200810115449 A CN200810115449 A CN 200810115449A CN 101306271 A CN101306271 A CN 101306271A
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- filter
- ore
- liquid
- solid separation
- compressed air
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- 238000000926 separation method Methods 0.000 title claims abstract description 24
- 239000007787 solid Substances 0.000 title claims abstract description 18
- 239000002002 slurry Substances 0.000 title claims abstract description 15
- 239000007788 liquid Substances 0.000 title claims description 9
- 229910052500 inorganic mineral Inorganic materials 0.000 title 1
- 239000011707 mineral Substances 0.000 title 1
- 238000000034 method Methods 0.000 claims abstract description 32
- 239000012141 concentrate Substances 0.000 claims abstract description 18
- 229910001570 bauxite Inorganic materials 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 claims abstract description 12
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000007667 floating Methods 0.000 claims abstract description 9
- 239000000706 filtrate Substances 0.000 claims abstract description 7
- 239000012065 filter cake Substances 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 13
- 238000004131 Bayer process Methods 0.000 claims description 7
- 238000001471 micro-filtration Methods 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 abstract description 4
- 230000008719 thickening Effects 0.000 abstract description 4
- 238000001914 filtration Methods 0.000 abstract 3
- 238000005516 engineering process Methods 0.000 description 8
- 230000008929 regeneration Effects 0.000 description 7
- 238000011069 regeneration method Methods 0.000 description 7
- 239000000919 ceramic Substances 0.000 description 4
- 238000004062 sedimentation Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000006210 lotion Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
A liquid-solid separation method during the ore-dressing process of bauxite ore relates to the liquid-solid separation method of ore concentrate and tailings of the bauxite ore after the ore-dressing during the production process of aluminum oxide. The liquid-solid separation method is characterized in that the separation process is in the production process of the aluminum oxide by the ore dressing Bayer method, the ore concentrate slurry or the slurry of the tailings is selected to be sent to a precise micro-porous filtering machine, thereby obtaining a filtrate with fewer floating objects and high clarity and the ore concentrate or the tailings with less attached water. The method of the invention does not use an ore-dressing settlement trough or a thickening pond during the conventional production process of the aluminum oxide, thereby simplifying the process flow; no flocculant is used, the solution with fewer floating objects and high clarity and the ore concentrate and the tailings with low attached water can be obtained by one-time filtration, thereby having the advantages of high filtration efficiency, simple operation, low labor intensity, long service life of the filter media, convenient renewable cleaning and high efficiency.
Description
Technical field
A kind of method of liquid-solid separation of ore concentration of bauxite process relates to the concentrate behind the ore concentration of bauxite in a kind of aluminum oxide production process and the solid separation method of mine tailing.
Background technology
In aluminum oxide industry is produced; the liquid-solid separation of slurries is indispensable unit operations; wherein the concentrate selection in the Liquor of Ore Dressing Bayer process technology and mine tailing effectively separate and the safety of mine tailing is stored up; not only to steady production, fall and can save the consumption and the very important effect that reduces production costs, and be related to protection to surrounding environment.From the liquid-solid separation processes developing history of domestic and international slurries, successively experienced plate and frame filter press, the sedimentation filter, subsider+flocculant, subsider+rotary drum filter, multitray settling tank, the individual layer subsider, high rate settling (comprising super subsider and high cone angle high rate settling), cyclone+subsider, cyclone+box filter, cyclone+sedimentation centrifuge+subsider, the liquid-solid separation of membrane technique, ceramic filter etc., all there is certain defective in these technologies, the complicated operation that has, the disengaging time that has is long, the equipment operation precision prescribed height that has, service cycle is short, difficult in maintenance, what have does not fit into the ore concentration of bauxite process conditions.At present, the separation method that in the technological process of Liquor of Ore Dressing Bayer process ore dressing part, uses, concentrate separates the technology that adopts thickening pond (or thickening pond+high rate settling)+ceramic capillary vertical-disk filter, and mine tailing separates the employing high rate settling, will add additive in the sedimentation separation process.For the concentrate separating technology, concentrate attached water～12%, but the separation equipment floor space is big, and especially the high rate settling ratio of height to diameter is big, has certain security risks problem that collapses, and the ceramic filter filter efficiency is lower, need vacuum big, the energy consumption height, and ceramic capillary plate fragility is big, easy fracture when resistance is big, loss is big; For the mine tailing separating technology, separate mine tailing attached water～60%, not sedimentation is not done solid, and the water consumption is high, stores up the very big problem of existence, and there is safety issue equally in high rate settling.
Summary of the invention
Purpose of the present invention is exactly the deficiency that exists at above-mentioned technology, provide a kind of and can effectively simplify technological process, do not use flocculant, can obtain few high clarity liquid of floating material and the very low concentrate and tailings of attached water, the filter efficiency height, easy and simple to handle, labour intensity is low, the filter medium long service life, and the method for the liquid-solid separation of the ore concentration of bauxite process convenient, that efficient is high is cleaned in regeneration.
The objective of the invention is to be achieved through the following technical solutions.
A kind of method of liquid-solid separation of ore concentration of bauxite process, it is characterized in that separation process is in the Liquor of Ore Dressing Bayer process aluminum oxide production process, concentrate selection slurries or mine tailing slurries are sent into precise microporous filter, obtain few high filtrate and very low concentrate or the mine tailing of attached water of clarity of floating material.
The method of the liquid-solid separation of a kind of ore concentration of bauxite process of the present invention, after it is characterized in that in the described process that precise microporous filter moves to filter cake and reaches specific thickness, unfiltered material in the machine is pressed into back into hopper with the positive mouthpiece of compressed air from filter, be pressed into the positive mouthpiece of compressed air again from filter, filter cake is pressed dry release; Open filter bottom major diameter deslagging bottom with the compressed air-driven cylinder then, compressed air is sent in the rigidity microfiltration tube from the filter liquid outlet, carry out blowback, the filter cake on the screen pipe outer wall is come off by outside the bottom discharge machine.
The method of the liquid-solid separation of a kind of ore concentration of bauxite process of the present invention, precise microporous filter moves some all after dates in the described process, uses after the use regenerated liquid cleans again.
Method of the present invention, efficiently solve ore dressing subsider or the thickening pond shortcoming used in the conventional aluminum oxide production process, simplified technological process, and do not use flocculant, once filter and to obtain few high clarity solution of floating material and the very low concentrate and tailings of attached water, filter efficiency height, easy and simple to handle, labour intensity is low, the filter medium long service life, and regeneration is cleaned conveniently, efficient is high.
Description of drawings
Fig. 1 sends out flow chart fully for the technology of inventive method.
The specific embodiment
A kind of method of liquid-solid separation of ore concentration of bauxite process, separation process may further comprise the steps: 1. in the Liquor of Ore Dressing Bayer process aluminum oxide production process, concentrate selection slurries or mine tailing slurries are sent into precise microporous filter, obtain few high filtrate and very low concentrate or the mine tailing of attached water of clarity of floating material; 2. after precise microporous filter moves to filter cake and reaches specific thickness, unfiltered material in the machine is pressed into back into hopper with the positive mouthpiece of compressed air from filter, is pressed into the positive mouthpiece of compressed air again, filter cake is pressed dry release from filter; 3. open filter bottom major diameter deslagging bottom with the compressed air-driven cylinder, compressed air is sent in the rigidity microfiltration tube from the filter liquid outlet, carry out blowback, the filter cake on the screen pipe outer wall is come off by outside the bottom discharge machine; 4. precise microporous filter moves some all after dates, and it is standby to use regenerated liquid to clean the back.
Method of the present invention comprises with lower device and material trend: air compressor 1, air cleaner 2, air accumulator 3, just blow 4, precise microporous filter 5, blowback 6, filtrate 7, washing lotion 8, sampling 9, emptying 10, regeneration cleaning fluid, 11, hot water storgae 12, slurry vessel 13, delivery pump 14, deslagging 15.
Embodiment 1
1. in the Liquor of Ore Dressing Bayer process aluminum oxide production process, the concentrate selection slurries after the ore dressing are directly sent into precise microporous filter 5, obtain the few high filtrate 7 of clarity of floating material;
2. after precise microporous filter operation certain hour filter cake reaches specific thickness, unfiltered material in the machine is pressed into back into hopper 13 with the positive mouthpiece 4 of compressed air from filter 5, be pressed into the positive mouthpiece 4 of compressed air, filter cake is pressed dry, use 10 releases from filter;
3. open filter bottom major diameter deslagging bottom with the compressed air-driven cylinder, compressed air is sent in the rigidity microfiltration tube from the filter liquid outlet, carry out blowback 6, filter cake on the screen pipe outer wall is come off discharge machine by bottom outer 15, the filter cake attached water is 5%;
4. precise microporous filter moves some all after dates, and it is standby to make 11 regeneration of regeneration cleaning fluid clean the back.
Embodiment 2
1. in the Liquor of Ore Dressing Bayer process aluminum oxide production process, the mine tailing slurries after the ore dressing are directly sent into precise microporous filter 5, obtain the few high filtrate 7 of clarity of floating material;
2. after precise microporous filter operation certain hour filter cake reaches specific thickness, unfiltered material in the machine is pressed into back into hopper 13 with the positive mouthpiece 4 of compressed air from filter 5, be pressed into the positive mouthpiece 4 of compressed air, filter cake is pressed dry, use 10 releases from filter;
3. open filter bottom major diameter deslagging bottom with the compressed air-driven cylinder, compressed air is sent in the rigidity microfiltration tube from the filter liquid outlet, carry out blowback 6, filter cake on the screen pipe outer wall is come off discharge machine by bottom outer 15, the mine tailing attached water is 10%;
4. precise microporous filter moves some all after dates, and it is standby to make 11 regeneration of regeneration cleaning fluid clean the back.
Claims (2)
1. the method for the liquid-solid separation of an ore concentration of bauxite process, it is characterized in that separation process is in the Liquor of Ore Dressing Bayer process aluminum oxide production process, concentrate selection slurries or mine tailing slurries are sent into precise microporous filter, obtain few high filtrate and very low concentrate or the mine tailing of attached water of clarity of floating material.
2. the method for the liquid-solid separation of a kind of ore concentration of bauxite process according to claim 1, after it is characterized in that in the described process that precise microporous filter moves to filter cake and reaches specific thickness, unfiltered material in the machine is pressed into back into hopper with the positive mouthpiece of compressed air from filter, be pressed into the positive mouthpiece of compressed air again from filter, filter cake is pressed dry release; Open filter bottom major diameter deslagging bottom with the compressed air-driven cylinder then, compressed air is sent in the rigidity microfiltration tube from the filter liquid outlet, carry out blowback, the filter cake on the screen pipe outer wall is come off by outside the bottom discharge machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101154497A CN101306271A (en) | 2008-06-24 | 2008-06-24 | Liquid solid separation method of alumyte slurry during mineral processing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101154497A CN101306271A (en) | 2008-06-24 | 2008-06-24 | Liquid solid separation method of alumyte slurry during mineral processing |
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| Publication Number | Publication Date |
|---|---|
| CN101306271A true CN101306271A (en) | 2008-11-19 |
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| CNA2008101154497A Pending CN101306271A (en) | 2008-06-24 | 2008-06-24 | Liquid solid separation method of alumyte slurry during mineral processing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101879384A (en) * | 2010-07-15 | 2010-11-10 | 云南大红山管道有限公司 | Process method for high-floater and small-granularity demineralization in iron concentrate transportation |
| CN103934118A (en) * | 2014-05-05 | 2014-07-23 | 河南东大矿业股份有限公司 | Bauxite beneficiation water circulation recycling method |
-
2008
- 2008-06-24 CN CNA2008101154497A patent/CN101306271A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101879384A (en) * | 2010-07-15 | 2010-11-10 | 云南大红山管道有限公司 | Process method for high-floater and small-granularity demineralization in iron concentrate transportation |
| CN101879384B (en) * | 2010-07-15 | 2012-07-18 | 云南大红山管道有限公司 | Process method for high-floater and small-granularity demineralization in iron concentrate transportation |
| CN103934118A (en) * | 2014-05-05 | 2014-07-23 | 河南东大矿业股份有限公司 | Bauxite beneficiation water circulation recycling method |
| CN103934118B (en) * | 2014-05-05 | 2016-08-31 | 河南东大矿业股份有限公司 | A kind of bauxite mineral water circulation reuse method |
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Open date: 20081119 |