CN102989588A - Method for recovering zircon enriched in red mud - Google Patents
Method for recovering zircon enriched in red mud Download PDFInfo
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- CN102989588A CN102989588A CN2012103725691A CN201210372569A CN102989588A CN 102989588 A CN102989588 A CN 102989588A CN 2012103725691 A CN2012103725691 A CN 2012103725691A CN 201210372569 A CN201210372569 A CN 201210372569A CN 102989588 A CN102989588 A CN 102989588A
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- flotation
- red mud
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- recovering
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Abstract
The invention discloses a method for recovering zircon enriched in red mud. The method is characterized by comprising the steps of pulping red mud, conducting flotation, adding a flotation agent consisting of 0.5-1.5 parts of tall oil, 1-2 parts of sodium silicate, 0.8-1.8 parts of oxidized paraffin wax soap and 0.5-1.8 parts of sodium oleate in 1000 parts of slurry according to weight part, mixing uniformly, then conducting flotation in a medium with pH being more than 12 so as to separate zircon. The flotation method and the proportion of the flotation agent have the characteristics that the flotation is implemented in a high-alkalinity environment, the zircon can be effectively separated when the pH value is more than 12, and the flotation effect is the best when the pH value is increased to be 13-13.5. According to the method, the flotation agent is just suitable for the high-alkalinity slurry of the red mud, and when being not enough, the pH value of the slurry is increased by adding sodium hydroxide, so that the good flotation effect is achieved. By the test of the applicant, 80% of zircon in the red mud can be separated by the flotation method.
Description
Technical field
The present invention relates to the method for enriching and recovering zircon in a kind of red mud, belong to red mud recovery technology field.
Background technology
Red mud is the solid, powdery contaminative waste residue of discharging in the aluminum oxide production process, one ton of aluminium oxide of the every production of average, 1.0-2.0 tons of red muds of subsidiary generation.The red mud of the annual discharging of China is up to millions of tons.Because smelting process and bauxite composition are different, the component of red mud is also very complicated, separation and difficult, the red mud in area also has radioactivity in China Guizhou Province, therefore, present red mud both domestic and external is mostly take " pin receive seabed " or " store up on land " as main, not only need certain capital cost, and take a large amount of soils, contaminated environment, and make the Rare Earth Mine (mainly being monazite) that contains in the red mud, bauxite, ilmenite, iron ore, a large amount of valuable metal ore deposits such as zircon ore deposit and abundant alkali lye can not get reasonable utilization, cause the secondary waste of resource, more cause large-area alkali pollution, be detrimental to health, and more the higher red mud dam of heap all can have the danger of collapsing at any time, and the people's life security has seriously hindered the sustainable development of aluminium industry around constantly threatening.
Along with petering out of natural resources, the recycling of secondary resource has become a large theme of current environmental protection, the processing of red mud and to fully utilize the thorough solution of this global hang-up extremely urgent, the comprehensive utilization of substantial contribution, manpower studies red mud has all been dropped in countries in the world, but be not immature, the unstable product quality of technology, the product red mud that is exactly existing mature technology is very low with addition of amount.Therefore, the practical efficiency of red mud is very low at present, and utilization is compared also with generation and is nowhere near, and is difficult to environmental pollution and potential safety hazard that the thorough elimination red mud that pile up like a mountain causes.
Summary of the invention
The object of the invention is to, the method for enriching and recovering zircon in a kind of red mud is provided.Utilize the high alkalinity slurry of red mud to carry out flotation, can effectively the zircon in the red mud be separated.
Technical scheme of the present invention.The method of enriching and recovering zircon in the red mud, with red mud slurrying, by flotation, by weight, in 1000 parts of slurries, add by 0.5-1.5 part tall oil 1-2 part waterglass, the flotation agent that 0.8-1.8 part oxidized paraffin wax soap and 0.5-1.8 part enuatrol form, in the medium of pH＞12, carry out flotation after mixing, zircon is selected.
Described flotation agent also comprises 5-10 part NaOH.
The pH value of described flotation is 13-13.5.
The proportioning of method for floating of the present invention and flotation agent, characteristics are to carry out flotation under the high alkalinity environment, and through applicant's test, the pH value of flotation medium brings up to 13-13.5 greater than can effectively zircon being selected more than 12 with the pH value, and flotation effect is best.The high alkalinity slurry of flotation agent positive adaptation red mud of the present invention when slurry pH value is inadequate, also needs to add NaOH and improves slurry pH value, to reach best flotation effect.Through applicant test, by this method for floating, can select in the red mud 80% zircon.Compare with prior art, method for floating of the present invention is simple, can adapt to the high alkalinity environment of red mud, and zircon is separated from red mud, reduces the radioactivity of red mud.
The specific embodiment
Embodiments of the invention 1.The method of enriching and recovering zircon in the red mud, with red mud slurrying, by flotation, by weight, in 1000 parts of slurries, add by 0.5-1.5 part tall oil 1-2 part waterglass, the flotation agent that 0.8-1.8 part oxidized paraffin wax soap and 0.5-1.8 part enuatrol form, in the medium of pH＞12, carry out flotation after mixing, zircon is selected.Through applicant's test, directly add tall oil, also can select zircon, but effect is not ideal enough.The proportioning of flotation agent of the present invention, can in the high alkalinity medium, carry out flotation, and the pH value of flotation medium reaches 13-13.5, flotation effect is best, therefore, if when the red mud slurries pH of flotation is inadequate, also need to add 5-10 part NaOH, to improve the pH value of flotation medium, reach best flotation effect.Through applicant's test, the zircon flotation recovery rate in the red mud can reach more than 80%.
Embodiments of the invention 2.The method of enriching and recovering zircon in the red mud, with red mud slurrying, by flotation, by weight, in 1000 parts of slurries, add by 1 part of tall oil, 1.5 part waterglass, 1.3 part oxidized paraffin wax soap, 1.1 parts of enuatrols, and 7 parts of flotation agent that NaOH forms, carry out flotation after mixing, zircon is selected.The pH value of flotation medium is 13.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, any technical solution of the present invention content that do not break away from,, all still belong in the scope of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment does according to technical spirit of the present invention.
Claims (3)
1. the method for enriching and recovering zircon in the red mud, it is characterized in that: with red mud slurrying, by flotation, by weight, in 1000 parts of slurries, add by 0.5-1.5 part tall oil 1-2 part waterglass, the flotation agent that 0.8-1.8 part oxidized paraffin wax soap and 0.5-1.8 part enuatrol form, in the medium of pH＞12, carry out flotation after mixing, zircon is selected.
2. the method for enriching and recovering zircon in the red mud according to claim 1, it is characterized in that: described flotation agent also comprises 5-10 part NaOH.
3. the method for enriching and recovering zircon in the red mud according to claim 1, it is characterized in that: the pH value of described flotation is 13-13.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103725691A CN102989588A (en) | 2012-09-29 | 2012-09-29 | Method for recovering zircon enriched in red mud |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103725691A CN102989588A (en) | 2012-09-29 | 2012-09-29 | Method for recovering zircon enriched in red mud |
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| CN102989588A true CN102989588A (en) | 2013-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012103725691A Pending CN102989588A (en) | 2012-09-29 | 2012-09-29 | Method for recovering zircon enriched in red mud |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87104013A (en) * | 1987-05-30 | 1988-12-14 | 广西冶金研究所 | The combination medicament of froth flotation zircon |
| CN1047462A (en) * | 1989-05-22 | 1990-12-05 | 北京矿冶研究总院 | Optimized flotation of zirconite in seashore placer |
| US5106489A (en) * | 1991-08-08 | 1992-04-21 | Sierra Rutile Limited | Zircon-rutile-ilmenite froth flotation process |
| CN1803300A (en) * | 2005-11-28 | 2006-07-19 | 中国铝业股份有限公司 | Flotation selection and desiliconization method for middle and low grade alumyte |
| WO2011085445A1 (en) * | 2010-01-14 | 2011-07-21 | Teebee Holdings Pty Ltd | Flotation reagents |
| CN102500596A (en) * | 2011-10-20 | 2012-06-20 | 安徽理工大学 | Red mud harmless comprehensive recycling technology suitable for Bayer process |
-
2012
- 2012-09-29 CN CN2012103725691A patent/CN102989588A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87104013A (en) * | 1987-05-30 | 1988-12-14 | 广西冶金研究所 | The combination medicament of froth flotation zircon |
| CN1047462A (en) * | 1989-05-22 | 1990-12-05 | 北京矿冶研究总院 | Optimized flotation of zirconite in seashore placer |
| US5106489A (en) * | 1991-08-08 | 1992-04-21 | Sierra Rutile Limited | Zircon-rutile-ilmenite froth flotation process |
| CN1803300A (en) * | 2005-11-28 | 2006-07-19 | 中国铝业股份有限公司 | Flotation selection and desiliconization method for middle and low grade alumyte |
| WO2011085445A1 (en) * | 2010-01-14 | 2011-07-21 | Teebee Holdings Pty Ltd | Flotation reagents |
| CN102500596A (en) * | 2011-10-20 | 2012-06-20 | 安徽理工大学 | Red mud harmless comprehensive recycling technology suitable for Bayer process |
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