CN102397820B - Method for utilizing bauxite dust - Google Patents
Method for utilizing bauxite dust Download PDFInfo
- Publication number
- CN102397820B CN102397820B CN 201110366704 CN201110366704A CN102397820B CN 102397820 B CN102397820 B CN 102397820B CN 201110366704 CN201110366704 CN 201110366704 CN 201110366704 A CN201110366704 A CN 201110366704A CN 102397820 B CN102397820 B CN 102397820B
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- China
- Prior art keywords
- bauxite
- dust
- raw ore
- concentrate
- bauxite dust
- Prior art date
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- 239000000428 dust Substances 0.000 title claims abstract description 43
- 229910001570 bauxite Inorganic materials 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000002002 slurry Substances 0.000 claims abstract description 27
- 239000012141 concentrate Substances 0.000 claims abstract description 24
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000002270 dispersing agent Substances 0.000 claims abstract description 6
- 238000007667 floating Methods 0.000 claims description 13
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical group [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 12
- 239000000686 essence Substances 0.000 claims description 12
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 6
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical group [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims description 6
- 239000000344 soap Substances 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 2
- 125000001931 aliphatic group Chemical group 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 239000012188 paraffin wax Substances 0.000 claims description 2
- 239000003784 tall oil Substances 0.000 claims description 2
- 238000005188 flotation Methods 0.000 abstract description 9
- 238000000227 grinding Methods 0.000 abstract description 5
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 abstract description 3
- 230000002000 scavenging effect Effects 0.000 abstract 5
- 239000002562 thickening agent Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000004537 pulping Methods 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- 229910052500 inorganic mineral Inorganic materials 0.000 description 4
- 239000011707 mineral Substances 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 238000004131 Bayer process Methods 0.000 description 2
- 238000013019 agitation Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
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- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to a method for utilizing bauxite dust produced during the aluminum oxide producing process by an ore dressing Bayer method, comprising the following steps of mixing the bauxite dust with the overflow water of a concentrate thickener to obtain the slurry with a certain concentration; after the slurry is mixed with the overflow of a second-grade grader in grinding process according to a certain rate, adding regulator, dispersant and collecting agent to the obtained slurry according to the requirements; and then obtaining the concentrate and tailings after the operations of coarsely scavenging for one time, finely scavenging for two times and scavenging (coarsely scavenging and finely scavenging). The method of the invention prevents the raw ore dust from secondarily flying, overcomes the argillization phenomenon of dramatically grinding the raw ore dust, optimizes the flotation work environment of the bauxite, and improves the selection index.
Description
Technical field
A kind of bauxite dust utilize method, particularly in a kind of Liquor of Ore Dressing Bayer process aluminum oxide production process the bauxite dust utilize method.
Background technology
In the Liquor of Ore Dressing Bayer process aluminum oxide production process, its bauxite crushing raw ore all will produce a certain amount of raw ore dust when carrying, and the raw ore dust accounts for the 1%-2% of raw ore amount.To the processing of these raw ore dust, be at present to adopt bag filter to collect, then be placed on the raw ore stockyard after the labor cleaning, enter the method for subsequent production flow process with raw ore.
Present processing method comes with some shortcomings: the one, and dust enters the subsequent production flow process with raw ore can produce secondary fly-up, forms vicious circle; The 2nd, because the raw ore granularity of dust is thinner, its D
(50)Be 13.97 μ m ,-0.074mm accounts for 94%, its enter with raw ore after the grinding machine of the floating operation of mill can the aggravation ore grinding the argillization phenomenon, impact is normally produced.
Summary of the invention
Purpose of the present invention is exactly the deficiency that exists for above-mentioned prior art, a kind of environmental contamination reduction, optimization bauxite flotation operating environment are provided, improve sorting index the bauxite dust utilize method.
The objective of the invention is to be achieved through the following technical solutions.
A kind of bauxite dust utilize method, it is characterized in that first bauxite dust and concentrate concentrator overflow water being deployed into slurries, these slurries are with after the floating operation secondary classifier overflow of mill mixes, the slurries that obtain add adjusting agent, dispersant, collecting agent on request, through one thick, two essences with scan operation and obtain concentrate selection and mine tailing.
A kind of bauxite dust of the present invention utilize method, it is characterized in that it is 33%-36% that bauxite dust and concentrate concentrator overflow water are deployed into slurry weight concentration, identical with the floating operation secondary overflow concentration in classifier of mill.
A kind of bauxite dust of the present invention utilize method, it is characterized in that slurries that bauxite dust and concentrate concentrator overflow water be deployed into and the volume ratio of the floating operation secondary classifier overflow of mill are 1:5.
A kind of bauxite dust of the present invention utilize method, it is characterized in that adjusting agent is sodium carbonate, consumption is 1000-3000g/ ton raw ore; Dispersant is calgon, and consumption is 50-90g/ ton raw ore; Collecting agent is one or several mixtures in oxidized paraffin wax soap, tall oil, aliphatic acid and soap class and derivative, and consumption is 1000-1200g/ ton raw ore.
Method of the present invention has been avoided producing secondary fly-up because the raw ore dust enters the subsequent production flow process with raw ore; The problems such as it is difficult that the argillization that has overcome its aggravation ore grinding causes worsening the flotation operation environment, affect sorting index, concentrate selection dewaters, simultaneously, the bauxite dust carries out flotation operation together with the secondary classifier overflow, has optimized to a certain extent floatation indicators.
The specific embodiment
A kind of bauxite dust utilize method, sack cleaner is collected the bauxite dust send into the stirring pulping groove by chute under the storehouse, add on request in pulping tank from concentrate concentrator overflow water simultaneously, obtain the bauxite dust slurries of 33%-36% concentration after stirring.Then with the flowsheet of slurry agitation groove that is pumped into the floating operation of mill, the slurries that the ratio that is 1:5 in bauxite dust slurries and secondary classifier overflow volume ratio adds secondary classifier overflow groove, add on request simultaneously adjusting agent, dispersant, collecting agent, send to after mixing and carry out flotation operation, through one thick, two essences with scan (the coarse scan essence is swept) operation and obtain concentrate selection and mine tailing.
Below in conjunction with being that the present invention is further illustrated for example.
Embodiment 1
The secondary classifier overflow slurries of the mill of concentration 35% floating workshop section are sent into the pulp tank of the floating operation of mill, add simultaneously sodium carbonate 1500g/ ton raw ore, calgon 70g/ ton raw ore, collecting agent 1000g/ ton raw ore, send to after mixing and carry out flotation operation, through one thick, two essences with scan (the coarse scan essence is swept) operation and obtain concentrate selection and mine tailing.
Mineral processing index: concentrate A/S7.73; Mine tailing A/S1.55; AL
2O
3The rate of recovery 80.54%.
Embodiment 2
Sack cleaner is collected the bauxite dust send into pulping tank, add on request from concentrate concentrator overflow water, obtain the bauxite dust slurries of 33% concentration after stirring.Then with the pulp tank that is pumped into the floating operation of mill, the slurries that add the concentration 35% that secondary classifier overflow groove comes in bauxite dust slurries and the secondary classifier overflow volume ratio ratio that is 1:5, add on request simultaneously sodium carbonate 1000g/ ton raw ore, calgon 50g/ ton raw ore, collecting agent 1000g/ ton raw ore, send to after mixing and carry out flotation operation, through one thick, two essences with scan (the coarse scan essence is swept) operation and obtain concentrate selection and mine tailing.
Mineral processing index: concentrate A/S7.93; Mine tailing A/S1.48; AL
2O
3The rate of recovery 80.56%.
Embodiment 3
Sack cleaner is collected the bauxite dust send into pulping tank, add on request from concentrate concentrator overflow water, obtain the bauxite dust slurries of 35% concentration after stirring.Then with the pulp tank that is pumped into the floating operation of mill, the slurries that add the concentration 35% that secondary classifier overflow groove comes in bauxite dust slurries and the secondary classifier overflow volume ratio ratio that is 1:5, add on request simultaneously sodium carbonate 3000g/ ton raw ore, calgon 70g/ ton raw ore, collecting agent 1100g/ ton raw ore, send to after mixing and carry out flotation operation, through one thick, two essences with scan (the coarse scan essence is swept) operation and obtain concentrate selection and mine tailing.
Mineral processing index: concentrate A/S7.82; Mine tailing A/S1.52; AL
2O
3The rate of recovery 81.71%.
Embodiment 4
Sack cleaner is collected the bauxite dust send into pulping tank, add on request from concentrate concentrator overflow water, obtain the bauxite dust slurries of 36% concentration after stirring.Then with the pulp tank that is pumped into the floating operation of mill, the slurries that add the concentration 35% that secondary classifier overflow groove comes in bauxite dust slurries and the secondary classifier overflow volume ratio ratio that is 1:5, add on request simultaneously sodium carbonate 2000g/ ton raw ore, calgon 90g/ ton raw ore, collecting agent 1200g/ ton raw ore, send to after mixing and carry out flotation operation, through one thick, two essences with scan (the coarse scan essence is swept) operation and obtain concentrate selection and mine tailing.
Mineral processing index: concentrate A/S7.88; Mine tailing A/S1.5; AL
2O
3The rate of recovery 82.7%.
Claims (4)
1. a bauxite dust utilizes method, it is characterized in that first bauxite dust and concentrate concentrator overflow water being deployed into certain density slurries, these slurries are with after the floating operation secondary classifier overflow of mill mixes by a certain percentage, the slurries that obtain add adjusting agent, dispersant, collecting agent on request, through one thick, two essences with scan operation and obtain concentrate selection and mine tailing.
A kind of bauxite dust according to claim 1 utilize method, it is characterized in that it is 33%-36% that bauxite dust and concentrate concentrator overflow water are deployed into the slurry weight specific concentration, identical with the floating operation secondary overflow concentration in classifier of mill.
A kind of bauxite dust according to claim 1 utilize method, it is characterized in that the volume ratio that bauxite dust and concentrate concentrator overflow water are deployed into certain density slurries and the floating operation secondary classifier overflow of mill is 1:5.
A kind of bauxite dust according to claim 1 utilize method, it is characterized in that adjusting agent is sodium carbonate, consumption is 1000-3000g/ ton raw ore; Dispersant is calgon, and consumption is 50-90g/ ton raw ore; Collecting agent is one or several mixtures in oxidized paraffin wax soap, tall oil, aliphatic acid, and consumption is 1000-1200g/ ton raw ore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110366704 CN102397820B (en) | 2011-11-18 | 2011-11-18 | Method for utilizing bauxite dust |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110366704 CN102397820B (en) | 2011-11-18 | 2011-11-18 | Method for utilizing bauxite dust |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102397820A CN102397820A (en) | 2012-04-04 |
| CN102397820B true CN102397820B (en) | 2013-05-08 |
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|---|---|---|---|
| CN 201110366704 Active CN102397820B (en) | 2011-11-18 | 2011-11-18 | Method for utilizing bauxite dust |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3243568B2 (en) * | 1991-08-07 | 2002-01-07 | 太平洋セメント株式会社 | Processing method of coal ash |
| CN100406104C (en) * | 2005-01-26 | 2008-07-30 | 中国铝业股份有限公司 | Clinker dissolving out milled dust collecting method and washing tower thereof |
| CN101805085A (en) * | 2010-04-13 | 2010-08-18 | 北京矿冶研究总院 | Method for treating desliming wastewater of reverse flotation of bauxite |
| CN102020299B (en) * | 2010-12-23 | 2012-10-24 | 南京航空航天大学 | Method for producing industrial activated aluminum oxide from pulverized fuel ash |
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| CN102397820A (en) | 2012-04-04 |
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Effective date of registration: 20170602 Address after: Qixian town Henan province 454171 Xiuwu County of Zhongzhou aluminum plant Patentee after: Chalco Zhongzhou Aluminium Industry Co., Ltd. Address before: 100082 Beijing, Xizhimen, North Street, No. 62, No. Patentee before: Aluminum Corporation of China Limited |
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