CN101850297A - Method for mineral dressing and silicon removal of bauxite - Google Patents
Method for mineral dressing and silicon removal of bauxite Download PDFInfo
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- CN101850297A CN101850297A CN 201010207055 CN201010207055A CN101850297A CN 101850297 A CN101850297 A CN 101850297A CN 201010207055 CN201010207055 CN 201010207055 CN 201010207055 A CN201010207055 A CN 201010207055A CN 101850297 A CN101850297 A CN 101850297A
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- Prior art keywords
- bauxite
- classification
- flotation
- high frequency
- grinding
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- 238000000034 method Methods 0.000 title claims abstract description 49
- 229910001570 bauxite Inorganic materials 0.000 title claims abstract description 42
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title abstract description 9
- 229910052710 silicon Inorganic materials 0.000 title abstract description 9
- 239000010703 silicon Substances 0.000 title abstract description 9
- 229910052500 inorganic mineral Inorganic materials 0.000 title abstract description 6
- 239000011707 mineral Substances 0.000 title abstract description 6
- 238000000227 grinding Methods 0.000 claims abstract description 29
- 238000005188 flotation Methods 0.000 claims abstract description 22
- 239000012141 concentrate Substances 0.000 claims abstract description 14
- 238000010334 sieve classification Methods 0.000 claims description 14
- 239000008187 granular material Substances 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 7
- 239000004576 sand Substances 0.000 claims description 3
- 235000011868 grain product Nutrition 0.000 claims description 2
- 229910001648 diaspore Inorganic materials 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 22
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 14
- 238000005516 engineering process Methods 0.000 description 10
- 239000000377 silicon dioxide Substances 0.000 description 10
- 229910004298 SiO 2 Inorganic materials 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000011175 product filtration Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 229910001593 boehmite Inorganic materials 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 229910001679 gibbsite Inorganic materials 0.000 description 1
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical compound O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical class C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention provides a method for mineral dressing and silicon removal of bauxite, and particularly relates to a method for mineral dressing and silicon removal of diaspore type bauxite. The method comprises an ore-grinding grading process and a flotation silicon removal process, and is characterized in that: the product of ore grinding is graded for two or three times, wherein a double-layer high-frequency vibrating screen is used at the last time of grading; and among three products obtained by grading of the double-layer high-frequency vibrating screen, large-size grains are reground and re-dressed, medium-size grains are used as rough concentrates or enter the flotation system for concentration, and small-size grains enter the flotation system for flotation silicon removal. The method has the advantages of effectively solving the technical problem that the grinding machine is high in energy consumption and low in treating capacity, the problem that the grain size of the flotation materials is small and other problems, better performing flotation silicon removal of bauxite, obtaining bauxite concentrates with qualified grade, along with good process technique and economic indexes.
Description
Technical field
A kind of dressing process for desiliconizing bauxite, particularly diaspore type bauxite dressing process for desiliconizing.
Background technology
Bauxite also claims bauxite, is the primary raw material of producing aluminium oxide.Bauxite can be divided into by valuable mineral composition kind in the ore: diaspore type, a water boehmite type and three kinds of fundamental types of gibbsite type.
China's bauxite resource is abundanter, and proved reserves reach 2,300,000,000 tons, occupies the 4th in the world, is mainly diaspore type bauxite, has the outstanding feature of high alumina, high silicon, low iron.Though Al in China's bauxite
2O
3Content is than higher, still owing to contain higher SiO simultaneously in the ore
2, so the alumina silica ratio of ore is totally on the low side.China's middle-low bauxite ore dressing and desiliconizing successively passes through a series of researchs such as country " 95 ", " 15 " key scientific and technological projects, national 973 emphasis basic research development and planning projects, Eleventh Five-Year Plan science and technology support planning item, important breakthrough and progress have been obtained, the result shows mineral dressing and silicon removal of bauxite technical feasibility, economical rationality.In the 1200kt/a and the 500kt/a ore dressing plant of the conventional low-grade bauxite of the aluminium company processing of building in succession, adopt the flow process of coarse-grain coarse ore concentrate-fine particles flotation desiliconization, obtained the concentrate alumina silica ratio greater than 7.0, the mine tailing alumina silica ratio is less than 1.45 floatation indicators; Adopt the complete wear low-grade ore of floating PROCESS FOR TREATMENT A/S3.5-4.5 entirely, obtained the concentrate alumina silica ratio greater than 7.0, the mine tailing alumina silica ratio is less than 1.4 good index, therefore, adopts present ore-dressing technique technology to solve the low problem of head grade substantially.
But in process of production, above technology ubiquity energy consumption height, grinding machine treating capacity are low, the floatation feed fine size, and flotation process is long, dressing product filtration difficulty and backwater are difficult to deficiencies such as utilization.
Summary of the invention
The objective of the invention is the deficiency that exists at above-mentioned prior art, the dressing process for desiliconizing bauxite of provide a kind of and can solve effectively that the grinding machine treating capacity is low, energy consumption is high, floatation feed fine size, flotation process are long, dressing product filtration difficulty and backwater are difficult to under-utilized problem.
The objective of the invention is to be achieved through the following technical solutions.
A kind of dressing process for desiliconizing bauxite comprises grind grading and flotation desilication process, it is characterized in that the product behind the ore grinding is carried out twice or three classifications, and double-deck high frequency shale shaker is adopted in wherein last classification; Obtain behind double-deck dither sieve classification in three products, coarse granule carries out regrinding and reconcentration one time, and middle grade particle is as rough concentrate or enter the selected operation of floatation system, and fine grained enters floatation system and carries out flotation desilication.
A kind of dressing process for desiliconizing bauxite of the present invention is characterized in that scalping and ore grinding constitute closed circuit grinding, and the secondary classification is that classification again or high frequency sieve classification are carried out in one-level classification overflow, and three classifications are that secondary classification sand setting is carried out the high frequency sieve classification.
A kind of dressing process for desiliconizing bauxite of the present invention is characterized in that high frequency shale shaker coarse grain product returns grinding machine and regrinds or adopt two sections grinding machines to regrind selected separately.
A kind of dressing process for desiliconizing bauxite of the present invention is characterized in that high frequency shale shaker upper sieve screen distance is 0.1mm～0.5mm, and high frequency shale shaker lower screen aperture is 0.037mm～0.15mm; Wherein, the upper strata screen-aperture is greater than lower floor's screen-aperture.
Adopt method of the present invention, efficiently solve bauxite especially in the diaspore mineral dressing and silicon removal of bauxite process, technical barriers such as energy consumption of mill height, treating capacity are low, floatation feed fine size, can carry out the bauxite flotation desiliconization well and obtain the bauxite concentrate selection of qualified grade, technology and economic indicator are good.
After the invention process, realized middle-low bauxite stone ore dressing and desiliconizing, under the condition that guarantees alumina silica ratio, grinding machine and floatation system treating capacity have been increased, reduce energy consumption, optimized the dressing product filter effect, improved resource utilization, the economic benefit and the social benefit of ore concentration of bauxite have been increased, for the sustainable use of bauxite resource provides powerful technical support.
Description of drawings
Fig. 1 is the principle process chart of the inventive method
Fig. 2 is the principle process chart of the inventive method
Fig. 3 is the inventive method embodiment 1 process chart
Fig. 4 is the inventive method embodiment 2 process charts
Fig. 5 is the inventive method embodiment 3 process charts
Fig. 6 is the inventive method embodiment 4 process charts
The specific embodiment
A kind of dressing process for desiliconizing bauxite comprises grind grading and flotation desilication technology, and the product behind the ore grinding is carried out twice or three classifications, and wherein, double-deck high frequency shale shaker is adopted in last classification; Obtain three products behind the dither sieve classification, coarse granule carries out regrinding and reconcentration one time, and middle grade particle is as rough concentrate or enter the selected operation of floatation system, and fine grained enters floatation system and carries out flotation desilication.
Embodiment 1
With the Henan bauxite is the test sample ore, raw ore Al
2O
360.15%, SiO
211.76%, alumina silica ratio is 5.11.The process chart that adopts is seen accompanying drawing 1, and the concrete technology of its desiliconization is as follows:
The Henan low-grade bauxite carries out ore grinding with the treating capacity of 2t/h in the ball mill of Φ 1500 * 1500, after one section spiral classifier classification, founding is returned grinding machine and is regrinded, overflow enters adopts double-deck dither sieve classification, behind the dither sieve classification, obtain three products, the coarse granule of+0.3mm returns grinding machine and regrinds, + 0.1mm～-the middle grade particle of 0.3mm is as rough concentrate,-0.1mm fine grained enters floatation system, enters the floatation system material and obtains concentrate 1 and two products of mine tailing through one thick one smart closed circuit flotation flowsheet.Its ore dressing and desiliconizing result and each Granularity Distribution see Table 1, table 2:
Table 1
Table 2
Embodiment 2
With certain external bauxite is test specimen, raw ore Al
2O
366.30%, SiO
210.68%, alumina silica ratio is 6.21.The process chart that adopts is seen accompanying drawing 2, and the concrete technology of its desiliconization is as follows:
External bauxite utilizes with the treating capacity of 3t/h and carries out ore grinding in the ball mill, after one section spiral classifier classification, founding is returned grinding machine and is regrinded, overflow enters adopts double-deck dither sieve classification, behind the dither sieve classification, obtain three products, the coarse granule material of+0.25mm returns grinding machine and regrinds, + 0.075mm～-the middle grade particle of 0.25mm directly enters the selected link of floatation system and carries out flotation desilication,-0.075mm fine grained enters floatation system, obtains two products of concentrate and tailings through one thick one smart closed circuit flotation flowsheet.Its ore dressing and desiliconizing result and each Granularity Distribution see Table 3, table 4:
Table 3
Table 4
Embodiment 3
With Shanxi bauxite is the test sample ore, raw ore Al
2O
359.43%, SiO
212.26%, alumina silica ratio is 4.85.The process chart that adopts is seen accompanying drawing 3, and the concrete technology of its desiliconization is as follows:
The Henan low-grade bauxite carries out ore grinding with the treating capacity of 5t/h in the ball mill of Φ 2100 * 2700, after one section spiral classifier classification, founding is returned grinding machine and regrinded, and overflow enters two sections classifying cyclones and carries out classification; Two sections classifying cyclone sand settings enter double-deck dither sieve classification, the coarse granule of+0.15mm returns grinding machine and regrinds,-0.037mm fine grained enters floatation system with two sections classifying cyclone overflows ,+0.037mm～-the middle grade particle of 0.15mm directly enters the selected operation of floatation system and carries out flotation desilication; Obtain two products of concentrate and tailings through one thick one smart closed circuit flotation flowsheet.Its ore dressing and desiliconizing result and each Granularity Distribution see Table 5, table 6:
Table 5
Table 6
Embodiment 4
With domestic certain low-grade mixing bauxite is the test sample ore, raw ore Al
2O
358.89%, SiO
214.18%, alumina silica ratio is 3.96.The process chart that adopts is seen accompanying drawing 4, and the concrete technology of its desiliconization is as follows:
Domestic low-grade mixing bauxite adopts the ball mill ore grinding, and after one section spiral classifier classification, founding is returned grinding machine and regrinded, and overflow enters two sections spiral classifiers and carries out classification; Two sections spiral classifier founding enter double-deck dither sieve classification, behind the dither sieve classification, obtain three products, the coarse granule of+0.4mm returns grinding machine and regrinds,-0.1mm fine grained enters the selected operation of floatation system with two sections classifying cyclone overflows ,+0.1mm～-the middle grade particle of 0.4mm is as rough concentrate; Enter the floatation system material and obtain concentrate 1 and two products of mine tailing through twice selected closed circuit flotation flowsheet of one roughing.Its ore dressing and desiliconizing result and each Granularity Distribution see Table 7, table 8:
Table 7
Table 8
Claims (4)
1. a dressing process for desiliconizing bauxite comprises grind grading and flotation desilication process, it is characterized in that the product behind the ore grinding is carried out twice or three classifications, and double-deck high frequency shale shaker is adopted in wherein last classification; Obtain behind double-deck dither sieve classification in three products, coarse granule carries out regrinding and reconcentration one time, and middle grade particle is as rough concentrate or enter the selected operation of floatation system, and fine grained enters floatation system and carries out flotation desilication.
2. a kind of dressing process for desiliconizing bauxite according to claim 1, it is characterized in that scalping and ore grinding constitute closed circuit grinding, the secondary classification is that classification again or high frequency sieve classification are carried out in one-level classification overflow, and three classifications are that secondary classification sand setting is carried out the high frequency sieve classification.
3. a kind of dressing process for desiliconizing bauxite according to claim 1 is characterized in that high frequency shale shaker coarse grain product returns grinding machine and regrinds or adopt two sections grinding machines to regrind selected separately.
4. a kind of dressing process for desiliconizing bauxite according to claim 1 is characterized in that high frequency shale shaker upper sieve screen distance is 0.1mm～0.5mm, and high frequency shale shaker lower screen aperture is 0.037mm～0.15mm; Wherein, the upper strata screen-aperture is greater than lower floor's screen-aperture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010207055 CN101850297A (en) | 2010-06-13 | 2010-06-13 | Method for mineral dressing and silicon removal of bauxite |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010207055 CN101850297A (en) | 2010-06-13 | 2010-06-13 | Method for mineral dressing and silicon removal of bauxite |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102205270A (en) * | 2011-05-26 | 2011-10-05 | 山东梁邹矿业集团有限公司 | Method for extracting molybdenum concentrate from hydrocyclone sand |
| CN102744146A (en) * | 2012-07-10 | 2012-10-24 | 河南东大矿业股份有限公司 | Ore-dressing method for low-grade bauxite |
| CN103521363A (en) * | 2013-10-19 | 2014-01-22 | 李耀吾 | Low-quality raw bauxite ore open-grinding and dressing technology |
| CN106391298A (en) * | 2016-09-20 | 2017-02-15 | 昆明理工大学 | Closed circuit ore grinding classification method |
| CN106944230A (en) * | 2017-04-07 | 2017-07-14 | 北京东方燕京工程技术股份有限公司 | Adjustable grinding process |
| CN106994385A (en) * | 2017-05-17 | 2017-08-01 | 内蒙古科技大学 | A kind of selective reducing mechanism of ore and method |
| CN109107752A (en) * | 2018-10-25 | 2019-01-01 | 中国铝业股份有限公司 | A kind of dry processing method of bauxite gangue |
| CN109107748A (en) * | 2018-10-25 | 2019-01-01 | 中国铝业股份有限公司 | Physics for bauxite washup tailing removes silicon device and desiliconization recovery process |
| CN109894254A (en) * | 2017-12-11 | 2019-06-18 | 南京梅山冶金发展有限公司 | A method of it is dehydrated for middle fine tailings |
| CN110302893A (en) * | 2019-05-29 | 2019-10-08 | 河南东大科技股份有限公司 | A method of with pre-selection classification before and after the production bauxite concentrate selection flotation of super low-grade ore |
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| CN101058082A (en) * | 2007-05-31 | 2007-10-24 | 中国铝业股份有限公司 | Mine milling method for improving particles size distribution of bauxite mine milling products |
| CN201291149Y (en) * | 2008-10-31 | 2009-08-19 | 鞍钢集团矿业公司 | Two-stage double closed circuit crushing screening facilites |
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2010
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| RO114238B1 (en) * | 1990-10-03 | 1999-02-26 | Emil Fechete | Process for revaluating siliceous bauxites |
| CN1393292A (en) * | 2001-06-29 | 2003-01-29 | 中南大学 | Dressing process for desiliconizing bauxite with medium or low Al/Si ratio |
| CN1403205A (en) * | 2001-09-11 | 2003-03-19 | 北京矿冶研究总院 | Bauxite dressing method |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102205270A (en) * | 2011-05-26 | 2011-10-05 | 山东梁邹矿业集团有限公司 | Method for extracting molybdenum concentrate from hydrocyclone sand |
| CN102744146A (en) * | 2012-07-10 | 2012-10-24 | 河南东大矿业股份有限公司 | Ore-dressing method for low-grade bauxite |
| CN102744146B (en) * | 2012-07-10 | 2013-07-10 | 河南东大矿业股份有限公司 | Ore-dressing method for low-grade bauxite |
| CN103521363A (en) * | 2013-10-19 | 2014-01-22 | 李耀吾 | Low-quality raw bauxite ore open-grinding and dressing technology |
| CN103521363B (en) * | 2013-10-19 | 2016-06-22 | 李耀吾 | Low-grade bauxite raw ore open-circuit grinding ore-dressing technique |
| CN106391298A (en) * | 2016-09-20 | 2017-02-15 | 昆明理工大学 | Closed circuit ore grinding classification method |
| CN106944230A (en) * | 2017-04-07 | 2017-07-14 | 北京东方燕京工程技术股份有限公司 | Adjustable grinding process |
| CN106944230B (en) * | 2017-04-07 | 2022-06-03 | 北京东方燕京工程技术有限责任公司 | Adjustable ore grinding process |
| CN106994385A (en) * | 2017-05-17 | 2017-08-01 | 内蒙古科技大学 | A kind of selective reducing mechanism of ore and method |
| CN109894254A (en) * | 2017-12-11 | 2019-06-18 | 南京梅山冶金发展有限公司 | A method of it is dehydrated for middle fine tailings |
| CN109107752A (en) * | 2018-10-25 | 2019-01-01 | 中国铝业股份有限公司 | A kind of dry processing method of bauxite gangue |
| CN109107748A (en) * | 2018-10-25 | 2019-01-01 | 中国铝业股份有限公司 | Physics for bauxite washup tailing removes silicon device and desiliconization recovery process |
| CN109107748B (en) * | 2018-10-25 | 2020-10-27 | 中国铝业股份有限公司 | Physical desiliconization device and desiliconization recovery process for bauxite ore washing tailings |
| CN109107752B (en) * | 2018-10-25 | 2020-10-27 | 中国铝业股份有限公司 | Dry treatment method of bauxite tailings |
| CN110302893A (en) * | 2019-05-29 | 2019-10-08 | 河南东大科技股份有限公司 | A method of with pre-selection classification before and after the production bauxite concentrate selection flotation of super low-grade ore |
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Application publication date: 20101006 |