CN101417268A - A kind of dressing process for desiliconizing of bauxite - Google Patents
A kind of dressing process for desiliconizing of bauxite Download PDFInfo
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- CN101417268A CN101417268A CNA2008102336469A CN200810233646A CN101417268A CN 101417268 A CN101417268 A CN 101417268A CN A2008102336469 A CNA2008102336469 A CN A2008102336469A CN 200810233646 A CN200810233646 A CN 200810233646A CN 101417268 A CN101417268 A CN 101417268A
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- desiliconizing
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Abstract
The invention provides a kind of dressing process for desiliconizing of bauxite, the one, rough grain is levigate after floatation process, siliceous mineral in the rough grain is dissociated and be removed, the 2nd, in coarse scan choosing and selected two cyclic processes, all get rid of mine tailing, thereby can in time from flow process, get rid of siliceous sludge, it is big because of clay content in conventional floatation process to have solved Accumulative Bauxite well, and can not get timely eliminating, and make sludge seriously disturb the problem of floatation process, guaranteed the flotation operation desired concn, reduced in time to get rid of and inhaled the medicine consumption that medicine causes, improved the selectivity that aluminium silicon separates because of sludge.To the ore of raw ore alumina silica ratio at the different alumina silica ratios of 2.5～8.6 scopes, concentrate alumina silica ratio and Al
2O
3Rate of recovery index all is higher than washup desiliconization index.The concentrate product of its acquisition can be used for producing aluminium oxide.
Description
Technical field
The present invention relates to a kind of Accumulative Bauxite and the dressing process for desiliconizing that comprises the mixed type bauxite of Accumulative Bauxite, belong to the technique of preparing field.
Background technology
Accumulative Bauxite mainly is distributed in ground such as China south.The Accumulative Bauxite ledge is made up of clay and bauxite chip, and the chip grade has a very wide distribution, and maximum particle size can reach more than several meters.Alumina silica ratio in the bauxite with the rule that the mineral grade changes is: the thin more alumina silica ratio of granularity is low more, often have only+1mm grade or more coarsely graded alumina silica ratio could satisfy the production requirement of aluminium oxide, so the saying of " greater than 1mm is the ore deposit, is mud less than 1mm " is arranged.Therefore, washup desliming, ore in sand form are the typical process of Accumulative Bauxite ore dressing as the raw material of alumina producing Bayer process.
In the Accumulative Bauxite, the productive rate in-1mm grade ore deposit is generally 40%～70%, Al in this grade
2O
3Occupation rate reaches more than 30%.Conventional washup desilication method is that the mineral with-1mm grade abandon, this can cause the loss of this part resource undoubtedly, especially when Accumulative Bauxite or comprise the alumina silica ratio of mixed type bauxite of Accumulative Bauxite when low, that is to say when this mineral grade is thin, though also there is the low more rule of the thin more alumina silica ratio of granularity, but the alumina silica ratio difference between the thickness grade is little, the alumina silica ratio of the washup product that employing washup desiliconization obtains is not high enough, make smelting recovery be difficult to be improved (less than 80%), and wash the Al in the sludge of abandoning
2O
3Loss can reach 50%, even higher, and consequently the resource overall recovery is lower, only is 40%, thereby has limited the development and use economically and reasonably of this class bauxite of Accumulative Bauxite.
In recent years, the development of the desiliconization technology of relevant appositional pattern bauxite is very fast, but to the then rarely seen report of the dressing process for desiliconizing of Accumulative Bauxite.Existing technology: a kind of washup-floatation process of Accumulative Bauxite, the patent No. is ZL 200410020580.7, it is characterized in that: change the Accumulative Bauxite ore dressing and desiliconizing into ore wash and appending dispersant powder by single washup technology, technology with the flotation of washup mine tailing, wherein flotation flowsheet is that one roughing, once purging selection, twice are selected, chats returns in proper order, and scanning mine tailing is true tailings.Adopt this technology to improve the quality of washing concentrate, reduce the mud containing rate of washing concentrate, by flotation with the Al in the washup mine tailing
2O
3Reclaim.
Prior art handle to as if, can and mainly obtain the Accumulative Bauxite of concentrate by washup by the washup desiliconization, adopt washup-floatation process processing, the washup mine tailing is adopted conventional flotation flowsheet processing.
For in low-grade accumulation type or comprise the accumulation type in low-grade mixed type bauxite, the washup processing often is difficult to obtain high aluminium silicon ratio and washes concentrate, if adopt conventional floatation process to handle, the clay sludge in the accumulation type ore deposit is difficult in time get rid of from flow process, thereby disturbs floatation process.
Summary of the invention
The invention provides a kind of alumina silica ratio of handling in the accumulation type of 2～9 scopes or comprise the dressing process for desiliconizing of the mixed type bauxite of accumulation type, be applicable to the ore dressing and desiliconizing of Accumulative Bauxite washup mine tailing simultaneously.Purpose is to improve the alumina silica ratio and the Al of such mineral dressing and silicon removal of bauxite concentrate
2O
3The rate of recovery.
The present invention is achieved by the following technical solutions: a kind of dressing process for desiliconizing of Accumulative Bauxite is characterized in that through the following step:
A, with ore all levigate to fineness reach-0.074mm account for 40～90% after enter rough floatation, the mineral of rough floatation enter cleaner flotation, the mine tailing of rough floatation is in line, perhaps enters and scans, the chats of scanning out returns rough floatation, it is in line to scan mine tailing;
The mineral of B, cleaner flotation are concentrate, and the mine tailing of cleaner flotation is in line, perhaps enter the classification ore dressing, and the mineral after the classification perhaps return rough floatation as chats as concentrate, and the mine tailing after the classification is in line.
Described rough floatation is the conventional rough floatation technology of prior art, can be one roughing, perhaps roughly selects for twice, perhaps roughly selects for three times.
Technology is scanned in scanning to the routine of prior art behind the described rough floatation, can be once purging selection, and perhaps secondary is scanned, and perhaps scans for three times.
Described cleaner flotation is the conventional cleaner flotation technology of prior art, can be primary cleaning, perhaps twice selected, perhaps triple cleaning.
Classification ore dressing behind the described cleaner flotation is the conventional precipitation fractionation ore-dressing technique of prior art.
Collecting agent in the described flotation adopts a kind of in oxidation paraffin wax soap, tall oil, aliphatic acid and soap class and the derivative or several, and wherein the use of concrete kind and consumption all will specifically be determined according to composite factors such as mineral composition, beneficiation flowsheet, preparation equipment, beneficiation costs.
A kind of in sodium carbonate, NaOH, metaphosphate, polyphosphate, waterglass, the small organic molecule or several are adopted in adjustment agent in the described flotation, and wherein the use of concrete kind and consumption all will specifically be determined according to composite factors such as mineral composition, beneficiation flowsheet, preparation equipment, beneficiation costs.
The present invention has following advantage and effect: adopt such scheme, the one, rough grain is levigate after floatation process, siliceous mineral in the rough grain is dissociated and be removed, the 2nd, in coarse scan choosing and selected two cyclic processes, all get rid of mine tailing, thereby can in time from flow process, get rid of siliceous sludge, it is big because of clay content in conventional floatation process to have solved Accumulative Bauxite well, and can not get timely eliminating, and make sludge seriously disturb the problem of floatation process, guaranteed the flotation operation desired concn, reduced in time to get rid of and inhaled the medicine consumption that medicine causes, improved the selectivity that aluminium silicon separates because of sludge.To the ore of raw ore alumina silica ratio at the different alumina silica ratios of 2.5～8.6 scopes, concentrate alumina silica ratio and Al
2O
3Rate of recovery index all is higher than washup desiliconization index.The concentrate product of its acquisition can be used for producing aluminium oxide.
Description of drawings
Fig. 1 is a principle process chart of the present invention;
The specific embodiment
Below in conjunction with embodiment the present invention is described further, is not limited thereto but hold within the present invention.
Embodiment 1
Raw material: mining area, alum clay mining area, Yunnan sample ore, its main chemical compositions is (%)
| Al 2O 3 | SiO 2 | Fe 2O 3 | Alumina silica ratio |
| 26.88 | 8.34 | 33.79 | 3.22 |
Medicament: adopt a kind of in oxidation paraffin wax soap, tall oil, aliphatic acid and soap class and the derivative or several to make collecting agent, adopt a kind of in sodium carbonate, NaOH, metaphosphate, polyphosphate, waterglass, the small organic molecule or several to adjust agent, carry out froth flotation.
Concrete technological process:
A, with ore all levigate to fineness reach-0.074mm account for 85% after enter rough floatation, rough floatation adopts secondary flotation, output mine tailing after twice flotation is roughly selected concentrate and is merged the cleaner flotation process that enters for twice;
B, cleaner flotation adopt recleaning, and twice selected output flotation concentrate is final concentrate, and twice selected mine tailing merges and carry out once essence and scan, and essence is scanned chats and returned cleaner flotation, and it is in line that the mine tailing that essence is scanned mine tailing and steps A is merged into true tailings.
Ore dressing and desiliconizing result: concentrate yield 64.96%, alumina silica ratio 9.24, Al
2O
3The rate of recovery 69.91%.
Embodiment 2
Raw material: mining area, alum clay mining area, Yunnan sample ore, its main chemical compositions is (%)
| Al 2O 3 | SiO 2 | Fe 2O 3 | Alumina silica ratio |
| 46.36 | 18.53 | 16.65 | 2.50 |
Medicament: with embodiment 1.
Concrete technological process:
A, with ore all levigate to fineness reach-0.074mm account for 80% after enter rough floatation, rough floatation is the one roughing once purging selection, scans back output mine tailing, scans chats and returns rough floatation again, roughly selects concentrate and enters cleaner flotation;
B, cleaner flotation are triple cleaning, and the output flotation concentrate after the mine tailing of three cleaner flotations merges, remerges as true tailings in line with the mine tailing of steps A as final concentrate after triple cleaning.
Ore dressing and desiliconizing result: concentrate yield 39.79%, alumina silica ratio 11.04, Al
2O
3The rate of recovery 52.30%.
Embodiment 3
Raw material: with embodiment 1.
Medicament: with embodiment 1.
Concrete technological process:
A, with ore all levigate to fineness reach-0.074mm account for 80% after enter rough floatation, rough floatation is to roughly select once purging selection twice, scans back output mine tailing, scans chats and returns rough floatation, roughly selects concentrate for twice and merges and enter refining process;
B, selected be twice selected, through twice selected after the output flotation concentrate as final concentrate, after twice cleaner tailings merges, remerge as true tailings in line with the mine tailing of steps A.
Ore dressing and desiliconizing result: concentrate yield 61.05%, alumina silica ratio 9.47, Al
2O
3The rate of recovery 66.30%.
Embodiment 4
Raw material: mining area, alum clay mining area, Yunnan sample ore, its main chemical compositions is (%)
| Al 2O 3 | SiO 2 | Fe 2O 3 | Alumina silica ratio |
| 49.75 | 5.78 | 23.90 | 8.61 |
Medicament: with embodiment 1.
Concrete technological process:
A, with ore all levigate to fineness reach-0.074mm account for 86% after enter rough floatation, rough floatation is the one roughing once purging selection, scans back output mine tailing, scans chats and returns rough floatation, roughly selects concentrate and enters refining process;
B, selected be primary cleaning, selected back output flotation concentrate, cleaner tailings is through classification of sedimentation, fine fraction is a mine tailing, coarse fraction merges as final concentrate with flotation concentrate, the merging of the particulate group mine tailing of the mine tailing of steps A and step B is in line as true tailings.
Ore dressing and desiliconizing result: concentrate yield 80.96%, concentrate alumina silica ratio 17.99, Al
2O
3The rate of recovery 87.53%.
Embodiment 5
Raw material: the comprehensive sample ore in alum clay mining area, Yunnan, its main chemical compositions is (%)
| Al 2O 3 | SiO 2 | Fe 2O 3 | Alumina silica ratio |
| 49.38 | 8.27 | 22.45 | 5.97 |
Medicament: with embodiment 1.
Concrete technological process:
A, with ore all levigate to fineness reach-0.074mm account for 40% after enter rough floatation, roughly select and be the one roughing once purging selection, scan the back output and scan mine tailing, scan chats and return rough floatation, roughly select concentrate and enter cleaner flotation;
B, rough floatation are primary cleaning, after primary cleaning the output flotation concentrate as final concentrate, cleaner tailings and steps A scan that mine tailing merges after classification of sedimentation, fine fraction is that true tailings is in line, returns after coarse fraction is regrinded and roughly selects.
Ore dressing and desiliconizing result: concentrate yield 83.45%, concentrate alumina silica ratio 14.83, Al
2O
3The rate of recovery 90.35%.
Claims (7)
1, a kind of dressing process for desiliconizing of bauxite is characterized in that through the following step:
A, with ore all levigate to fineness reach-0.074mm account for 40～90% after enter rough floatation, the mineral of rough floatation enter cleaner flotation, the mine tailing of rough floatation is in line, perhaps enters and scans, the chats of scanning out returns rough floatation, it is in line to scan mine tailing;
The mineral of B, cleaner flotation are concentrate, and the mine tailing of cleaner flotation is in line, perhaps enter the classification ore dressing, and the mineral after the classification perhaps return rough floatation as chats as concentrate, and the mine tailing after the classification is in line.
2, the dressing process for desiliconizing of bauxite according to claim 1 is characterized in that described rough floatation is the conventional rough floatation technology of prior art, is one roughing, perhaps roughly selects for twice, perhaps roughly selects for three times.
3, the dressing process for desiliconizing of bauxite according to claim 1 is characterized in that mine tailing behind the described rough floatation is scanned to the routine of prior art to scan technology that be once purging selection, perhaps secondary is scanned, and perhaps scans for three times.
4, the dressing process for desiliconizing of bauxite according to claim 1 is characterized in that described cleaner flotation is the conventional cleaner flotation technology of prior art, is primary cleaning, perhaps twice selected, perhaps triple cleaning.
5, the dressing process for desiliconizing of bauxite according to claim 1 is characterized in that the classification ore dressing behind the described cleaner flotation is the conventional precipitation fractionation ore-dressing technique of prior art.
6, the dressing process for desiliconizing of bauxite according to claim 1 is characterized in that collecting agent in the described flotation adopts a kind of in oxidation paraffin wax soap, tall oil, aliphatic acid and soap class and the derivative or several.
7, the dressing process for desiliconizing of bauxite according to claim 1 is characterized in that adjustment agent in the described flotation adopts a kind of in sodium carbonate, NaOH, metaphosphate, polyphosphate, waterglass, the small organic molecule or several.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102336469A CN101417268A (en) | 2008-11-26 | 2008-11-26 | A kind of dressing process for desiliconizing of bauxite |
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|---|---|---|---|
| CNA2008102336469A CN101417268A (en) | 2008-11-26 | 2008-11-26 | A kind of dressing process for desiliconizing of bauxite |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102398914A (en) * | 2010-09-10 | 2012-04-04 | 中国科学院过程工程研究所 | Method for modifying Bayer process, processing low-grade diaspore bauxite and producing alumina |
| CN101670317B (en) * | 2009-09-24 | 2012-10-31 | 昆明理工大学 | Combined flotation regulator of mineral phosphate containing siliceous gangue |
| CN102897816A (en) * | 2012-09-29 | 2013-01-30 | 贵州绿水青山环保科技有限公司 | Deep recycling method of red mud |
| CN101757986B (en) * | 2009-12-18 | 2013-03-20 | 中国铝业股份有限公司 | Method for floating bauxite |
| CN103170411A (en) * | 2011-12-21 | 2013-06-26 | 沈阳铝镁设计研究院有限公司 | Preparation method of collecting agent applied to floatation of coarse particles of bauxite |
| CN103801460A (en) * | 2014-01-26 | 2014-05-21 | 乌鲁木齐金石徽龙矿业有限公司 | Low-grade copper flotation technology |
| CN103801461A (en) * | 2014-01-26 | 2014-05-21 | 乌鲁木齐金石徽龙矿业有限公司 | Low-grade copper-nickel ore flotation technology |
| CN108090695A (en) * | 2018-01-04 | 2018-05-29 | 中国有色金属长沙勘察设计研究院有限公司 | A kind of exploitation planing method in the more mining areas of Accumulative Bauxite |
-
2008
- 2008-11-26 CN CNA2008102336469A patent/CN101417268A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101670317B (en) * | 2009-09-24 | 2012-10-31 | 昆明理工大学 | Combined flotation regulator of mineral phosphate containing siliceous gangue |
| CN101757986B (en) * | 2009-12-18 | 2013-03-20 | 中国铝业股份有限公司 | Method for floating bauxite |
| CN102398914A (en) * | 2010-09-10 | 2012-04-04 | 中国科学院过程工程研究所 | Method for modifying Bayer process, processing low-grade diaspore bauxite and producing alumina |
| CN102398914B (en) * | 2010-09-10 | 2013-10-16 | 中国科学院过程工程研究所 | Modifying Bayer process for processing low-grade diaspore bauxite and producing alumina |
| CN103170411A (en) * | 2011-12-21 | 2013-06-26 | 沈阳铝镁设计研究院有限公司 | Preparation method of collecting agent applied to floatation of coarse particles of bauxite |
| CN103170411B (en) * | 2011-12-21 | 2014-10-29 | 沈阳铝镁设计研究院有限公司 | Preparation method of collecting agent applied to floatation of coarse particles of bauxite |
| CN102897816A (en) * | 2012-09-29 | 2013-01-30 | 贵州绿水青山环保科技有限公司 | Deep recycling method of red mud |
| CN103801460A (en) * | 2014-01-26 | 2014-05-21 | 乌鲁木齐金石徽龙矿业有限公司 | Low-grade copper flotation technology |
| CN103801461A (en) * | 2014-01-26 | 2014-05-21 | 乌鲁木齐金石徽龙矿业有限公司 | Low-grade copper-nickel ore flotation technology |
| CN103801460B (en) * | 2014-01-26 | 2017-01-25 | 乌鲁木齐金石徽龙矿业有限公司 | Low-grade copper flotation technology |
| CN108090695A (en) * | 2018-01-04 | 2018-05-29 | 中国有色金属长沙勘察设计研究院有限公司 | A kind of exploitation planing method in the more mining areas of Accumulative Bauxite |
| CN108090695B (en) * | 2018-01-04 | 2021-09-14 | 中国有色金属长沙勘察设计研究院有限公司 | Mining planning method for accumulation type bauxite multi-ore area |
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Application publication date: 20090429 |