CN103170410B - Flotation method for reducing sulfur in bauxite concentrate - Google Patents
Flotation method for reducing sulfur in bauxite concentrate Download PDFInfo
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- CN103170410B CN103170410B CN201310077852.6A CN201310077852A CN103170410B CN 103170410 B CN103170410 B CN 103170410B CN 201310077852 A CN201310077852 A CN 201310077852A CN 103170410 B CN103170410 B CN 103170410B
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Abstract
Disclosed is a flotation method for reducing sulfur in bauxite concentrate. The method includes the following steps: grinding raw material ore with 40%-70% of Al2o3 grade and 2%-24% of sulfur grade to mineral monomer, and then separating the mineral monomer; adding sulphide ore activator oxalate ethylamine; activating flotation of sulphide ore which is difficult to float; adding sodium n-butylxanthate and dithiophosphate BA compounded collectors and foaming agent oil 2; floating out sulfur-containing mineral with a mechanical-stirring-type flotation machine; and acquiring bauxite concentrate with the sulfur content less than 0.5%. Smelting requirements can be met.
Description
One, technical field
The present invention relates to a kind of method for floating that reduces bauxite concentrate sulfur-bearing, high mainly for bauxite concentrate sulfur-bearing, conventional flotation medicament is difficult to bauxite concentrate sulphur grade to be down to smelt sulphur required to < 0.5%.Adopt new and effective oxalic acid ethamine sulphide ore activator and combined capturing and collecting agent, carry out floatation desulphurization, bauxite concentrate sulphur grade can be down to below 0.5%.
Two, background technology
In sulphide ore and bauxite intergrowth deposit, when bauxite is reclaimed in ore dressing, bauxite concentrate sulphur grade is difficult to reach bauxite and smelts the requirement that sulphur grade is less than to 0.5%, will bring difficulty and increase smelting cost to smelting process, has particularly reduced the quality and performance of matallurgical products aluminium.
Three, summary of the invention
The object of the present invention is to provide a kind of method for floating that reduces bauxite concentrate sulfur-bearing, can access the bauxite concentrate of sulfur-bearing < 0.5%, reach smelting requirements.
The present invention is achieved through the following technical solutions above-mentioned purpose: a kind of method for floating that reduces bauxite concentrate sulfur-bearing, comprises the steps:
(1) by Al
2o
3after the raw ore that grade is 40～70%, sulphur grade is 2～24% is milled to mineral monomer and dissociates,
(2) add sulphide ore activator oxalic acid ethamine, improve the hydrophobicity of sulphide ore, increase floatability,
(3) add butyl xanthate+butyl ammonium aerofloat combined capturing and collecting agent and No. 2 oily foaming agents, with agitation impeller flotator by sulfur mineral emersion,
(4) the total consumption of medicament is:
Oxalic acid ethamine: 500g/t,
Butyl xanthate: 80g/t,
Butyl ammonium aerofloat: 40g/t,
No. 2 oil: 50g/t.
Oxalic acid ethamine molecular formula: C
6h
12n
2o
2, structural formula: CH
3cH
2nHOCCOHNCH
2cH
3.
The method for floating of described reduction bauxite concentrate sulfur-bearing, when medicament is used, is first mixed with following % by weight concentration:
Oxalic acid ethamine: 3% aqueous solution
Butyl xanthate: 1% aqueous solution
Butyl ammonium aerofloat: 1% aqueous solution
No. 2 oil: stoste is added.
Outstanding advantages of the present invention is:
1, by adding efficient sulphide ore activator oxalic acid ethamine, the difficult floating sulphide ore of activation, improve containing sulfur minerals hydrophobicity, strengthen its floatability.
2, use butyl xanthate+butyl ammonium aerofloat combined capturing and collecting agent, strengthen the collecting ability to containing sulfur minerals, strengthen its floating.
3, floating agent dosage of the present invention is few, corrosion-free, pollution-free, and sulphur extrusion rate is high.
Four, the specific embodiment
By the following examples technical scheme of the present invention is described further.
Embodiment 1
1. raw mineral materials:
Raw ore Al
2o
3grade 43.57%, sulphur grade 20.30%, process mineralogy research shows: aluminum-containing mineral is mainly a diaspore and gibbsite, and containing sulfur minerals is mainly pyrite.
2. floating agent and operating condition:
First after raw ore being milled to mineral monomer and dissociating, add sulphide ore activator oxalic acid ethamine 500g/t, and then add butyl xanthate 80g/t+ butyl ammonium aerofloat 40g/t combined capturing and collecting agent, No. 2 oily 50g/t of foaming agent, adopt one thick three to sweep two cleaner flotation technological process flotation containing sulfur minerals, obtain bauxite concentrate productive rate 44.18%, Al
2o
3grade 72.06%, sulphur grade 0.27%, Al
2o
3the rate of recovery 73.06%, sulphur extrusion rate 99.51%.
Embodiment 2
1. raw mineral materials:
Raw ore Al
2o
3grade 70.33%, sulphur grade 1.71%, process mineralogy research shows: aluminum-containing mineral is mainly a diaspore and gibbsite, and containing sulfur minerals is mainly pyrite.
2. floating agent and operating condition:
First after raw ore being milled to mineral monomer and dissociating, add sulphide ore activator oxalic acid ethamine 200g/t, and then add butyl xanthate 20g/t+ butyl ammonium aerofloat 10g/t combined capturing and collecting agent, No. 2 oily 20g/t of foaming agent, adopt one thick three to sweep two cleaner flotation technological process flotation containing sulfur minerals, obtain bauxite concentrate productive rate 87.32%, Al
2o
3grade 72.16%, sulphur grade 0.19%, Al
2o
3the rate of recovery 89.59%, sulphur extrusion rate 88.94%.
Embodiment 3
1. raw mineral materials:
Raw ore Al
2o
3grade 39.94%, sulphur grade 24.01%, process mineralogy research shows: aluminum-containing mineral is mainly a diaspore and gibbsite, and containing sulfur minerals is mainly pyrite.
2. floating agent and operating condition:
First after raw ore being milled to mineral monomer and dissociating, add sulphide ore activator oxalic acid ethamine 500g/t, and then add butyl xanthate 80g/t+ butyl ammonium aerofloat 40g/t combined capturing and collecting agent, No. 2 oily 50g/t of foaming agent, adopt one thick three to sweep two cleaner flotation technological process flotation containing sulfur minerals, obtain bauxite concentrate productive rate 44.90%, Al
2o
3grade 71.96%, sulphur grade 0.39%, Al
2o
3the rate of recovery 80.71%, sulphur extrusion rate 99.02%.
Claims (2)
1. a method for floating that reduces bauxite concentrate sulfur-bearing, is characterized in that: comprise the steps:
(1) by Al
2o
3after the raw ore that grade is 40 ~ 70%, sulphur grade is 2 ~ 24% is milled to mineral monomer and dissociates,
(2) by the total consumption of medicament, be that 500g/t adds sulphide ore activator oxalic acid ethamine, improve the hydrophobicity of sulphide ore, increase floatability,
(3) adding by the total consumption of medicament is combined capturing and collecting agent and No. 2 oily foaming agents of 50 g/t of 80 g/t butyl xanthates and 40 g/t butyl ammonium aerofloats, with agitation impeller flotator by sulfur mineral emersion.
2. the method for floating of reduction bauxite concentrate sulfur-bearing according to claim 1, is characterized in that, when medicament is used, is first mixed with following % by weight concentration:
Oxalic acid ethamine: 3% aqueous solution
Butyl xanthate: 1% aqueous solution
Butyl ammonium aerofloat: 1% aqueous solution
No. 2 oil: stoste is added.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310077852.6A CN103170410B (en) | 2013-03-12 | 2013-03-12 | Flotation method for reducing sulfur in bauxite concentrate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310077852.6A CN103170410B (en) | 2013-03-12 | 2013-03-12 | Flotation method for reducing sulfur in bauxite concentrate |
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| Publication Number | Publication Date |
|---|---|
| CN103170410A CN103170410A (en) | 2013-06-26 |
| CN103170410B true CN103170410B (en) | 2014-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310077852.6A Expired - Fee Related CN103170410B (en) | 2013-03-12 | 2013-03-12 | Flotation method for reducing sulfur in bauxite concentrate |
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|---|---|---|---|---|
| CN108311292A (en) * | 2018-02-08 | 2018-07-24 | 高志 | A kind of sulfide flotation activator and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4904374A (en) * | 1987-10-08 | 1990-02-27 | Sentrachem Limited | Froth flotation |
| CN1968599A (en) * | 2004-05-14 | 2007-05-23 | 阿尔弗莱克斯新西兰有限公司 | Improvements in animal identification marking |
| CN101767062A (en) * | 2008-12-30 | 2010-07-07 | 中国地质科学院郑州矿产综合利用研究所 | Method for separating bauxite and sulfur-containing mineral from high-sulfur bauxite |
| CN102151614A (en) * | 2010-12-15 | 2011-08-17 | 中国铝业股份有限公司 | Method for dressing, desilicication and desulfuration of sulfur-containing bauxite |
-
2013
- 2013-03-12 CN CN201310077852.6A patent/CN103170410B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4904374A (en) * | 1987-10-08 | 1990-02-27 | Sentrachem Limited | Froth flotation |
| CN1968599A (en) * | 2004-05-14 | 2007-05-23 | 阿尔弗莱克斯新西兰有限公司 | Improvements in animal identification marking |
| CN101767062A (en) * | 2008-12-30 | 2010-07-07 | 中国地质科学院郑州矿产综合利用研究所 | Method for separating bauxite and sulfur-containing mineral from high-sulfur bauxite |
| CN102151614A (en) * | 2010-12-15 | 2011-08-17 | 中国铝业股份有限公司 | Method for dressing, desilicication and desulfuration of sulfur-containing bauxite |
Non-Patent Citations (1)
| Title |
|---|
| 李长凯等.调整剂对高硫铝土矿浮选脱硫行为的影响.《有色金属（选矿部分）》.2011,(第1期),第26、56-59页. * |
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