CN109092553A - A kind of beneficiation method obtaining low-sulfur diaspore concentrate - Google Patents
A kind of beneficiation method obtaining low-sulfur diaspore concentrate Download PDFInfo
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- CN109092553A CN109092553A CN201810867219.XA CN201810867219A CN109092553A CN 109092553 A CN109092553 A CN 109092553A CN 201810867219 A CN201810867219 A CN 201810867219A CN 109092553 A CN109092553 A CN 109092553A
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- China
- Prior art keywords
- limonite
- content
- sulfur
- diaspore
- flotation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
Abstract
A kind of beneficiation method obtaining low-sulfur diaspore concentrate, belongs to the technical field of beneficiation of bauxite.Content of limonite analysis is carried out to diaspore raw ore to be selected；If the content of limonite is lower than 8% in raw ore, then in the mechanical milling process before flotation or gravity treatment, the limonite that sulfur content is not higher than 0.03% is added, content of the limonite in raw ore is set to reach 8%, after carrying out flotation or gravity treatment, gained ore pulp is sent into magnetic separator, magnetic field strength is 10000~20000 Gausses；If the content of limonite is not less than 8% in raw ore, ball milling and flotation or gravity treatment are directly carried out, then ore pulp resulting after flotation or gravity treatment is sent into magnetic separator, magnetic field strength is 10000~20000 Gausses.Sulfur content can be dropped to 0.3% hereinafter, to meet alumina producing Bayer process requirement in the sulfur content of 5% or more diaspore by this method.It is at low cost, meet environmental requirement, remarkable in economical benefits.
Description
Technical field
The invention belongs to the technical field of beneficiation of bauxite, and in particular to a kind of ore dressing for obtaining low-sulfur diaspore concentrate
Method.
Background technique
In aluminium oxide Bayer process production process, the presence of any form sulphur all will cause to seriously affect to production.
Production practices show that with alumina producing Bayer process, the requirement to diaspore concentrate is that the weight percentage of sulphur exists
0.3% or less (content described below refers both to weight percent content).The primary presence of sulphur in high-sulfur diaspore type bauxite
Change over condition in form and subsequent production process is complex.When diaspore raw ore sulfur-bearing is more than 5%, due to a water
Pyrite in duralumin stone, magnetic iron ore (Fe1-xS), the explosion of marcasite in process of production is outdoor to stockpile and store, and transports, and breaks
Broken, ore grinding, it is iron hydroxide that the links such as ore dressing are variable under oxidative conditions, while releasing sulfate ion.Sulfate ion
Increase with the sulfur content of diaspore raw ore and increase, increases with the increase of ore particle surface area, also with the storage and transportation production time
Growth and increase, and be difficult to remove this part of sulfuric acid root with the conventional beneficiation method such as existing flotation gravity treatment, therefore obtain
Sulfur-bearing is highly difficult in 0.3% diaspore concentrate below.
CN201210278252.1 discloses a kind of oxidation sweetening-magnetization of high-sulfur bauxite except iron preprocess method, leads to
It crosses and adds enough pyrite or the dry grinding of sulphur ore matching into high-sulfur bauxite, desulfurization with roasting technique is then carried out in roaster, is allowed to
Ore resource as suitable Bayer process process for making alumina.The disadvantages of this method will cause environmental pollution, and roasting energy consumption is big,
High production cost.
CN200810302361.6 discloses a kind of sulfur method of high-sulfur bauxite, pre-processes bauxite using magnetization,
Bauxite after magnetization treatment passes through levigate magnetic separation process desulfurization.Actually bauxite factory day output all more than kiloton,
It is needed using this method special " the electromagnetic radiation reactor tank " of huge capacity and big electrical power, the outdoor high-sulfur alumina stockpiled and stored in scene
Mine can not accomplish again in drying regime, and premagnetization is just difficult when washiness, therefore not only power consumption is big, with high costs, and magnetic
Change pretreating effect to be difficult to control.This method is only applicable to laboratory, be difficult to carry out in actual production.
Summary of the invention
The purpose of the present invention is overcoming the prior art, a kind of ore dressing for obtaining low-sulfur diaspore concentrate is provided
Method, this method not will increase environmental pollution, and less energy-consuming is at low cost, can actually use in bauxite factory.
The method of the present invention is:
Content of limonite analysis is carried out to diaspore raw ore to be selected；
If the content of limonite is lower than 8% in raw ore, in the mechanical milling process before flotation or gravity treatment, sulfur content is added
Limonite not higher than 0.03% makes content of the limonite in raw ore reach 8%, after carrying out flotation or gravity treatment, by gained mine
Slurry is sent into magnetic separator, and magnetic field strength is 10000~20000 Gausses；
If the content of limonite is not less than 8% in raw ore, ball milling and flotation or gravity treatment are directly carried out, then by flotation or again
Resulting ore pulp is sent into magnetic separator after choosing, and magnetic field strength is 10000~20000 Gausses.
Sulfur content can be dropped to 0.3% hereinafter, to full in the sulfur content of 5% or more diaspore by the method for the present invention
Sufficient alumina producing Bayer process requirement.Studies have shown that the goethite in limonite has strong adsorption capacity to many acid ions, and
Just there is the limonite containing goethite in diaspore raw ore.The present invention adsorbs sulfate radical by the goethite in limonite to remove
Sulphur adds brown when the content of limonite in raw ore is not enough to adsorb in raw ore and produces sulfate radical caused by each link
Iron ore；When the limonite contained by the diaspore raw ore itself is 8% or more, without addition.Using this method sulphur removal, added
Limonite select factory self-sufficient, it is cheap and easily-available.To the various sulfur-bearing objects in diaspore, can flotation person's flotation it, can
Gravity treatment person's gravity treatment it, non-floatable or gravity treatment sulfate radical inhales the strong adsorption capacity of acid ion by the goethite in limonite
It, then the limonite that saturation has adsorbed sulfate radical is removed with high intensity magnetic separation, to realize efficient sulphur removal, make a hydraulic aluminium of high-sulfur
Sulphur in stone can all drop to 0.3% or less.
The utility model has the advantages that the method for the present invention is that one kind can really be used to produce actual technology, and it is at low cost, meet environmental protection and wants
It asks, remarkable in economical benefits, effective sulfur reduction for high-sulfur diaspore bauxite provides a kind of new method, allows not available
Resource becomes available resources, expands the available resource reserve of high-sulfur bauxite, and production economy technical indicator is able to substantially
It improves.
Specific embodiment
Embodiment 1: certain high-sulfur diaspore raw ore sulfur-bearing 7.2%, content of limonite actual measurement therein is 2.5%.?
The limonite that addition accounts for raw ore weight 5.5% in mechanical milling process, itself sulfur-bearing is 0.012%, carries out high intensity magnetic separation, magnetic again after flotation
Field intensity is 16000 Gausses.After magnetic separation, sulfur-bearing is 0.21% in gained diaspore concentrate, complies fully with Bayer process production
The requirement of aluminium oxide.
Embodiment 2: certain high-sulfur diaspore raw ore sulfur-bearing 14.6%, content of limonite actual measurement therein is 15.26%,
It is not required to add limonite again in mechanical milling process, first gravity treatment after ball milling, then carries out high intensity magnetic separation, magnetic field strength is 12000 Gausses, magnetic
Sulfur content is 0.29% in gained diaspore concentrate after choosing, complies fully with the requirement of alumina producing Bayer process.
Above embodiments are only for the present invention is described further, and the scope of the present invention is not by illustrated embodiment
Limitation.
Claims (1)
1. a kind of beneficiation method for obtaining low-sulfur diaspore concentrate, it is characterised in that:
Content of limonite analysis is carried out to diaspore raw ore to be selected；
If the content of limonite is lower than 8% in raw ore, in the mechanical milling process before flotation or gravity treatment, it is not high that sulfur content is added
In 0.03% limonite, content of the limonite in raw ore is made to reach 8%, after carrying out flotation or gravity treatment, gained ore pulp is sent
Enter magnetic separator, magnetic field strength is 10000~20000 Gausses；
If the content of limonite is not less than 8% in raw ore, ball milling and flotation or gravity treatment are directly carried out, then will be after flotation or gravity treatment
Resulting ore pulp is sent into magnetic separator, and magnetic field strength is 10000~20000 Gausses.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810867219.XA CN109092553B (en) | 2018-08-01 | 2018-08-01 | Beneficiation method for obtaining low-sulfur diaspore concentrate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810867219.XA CN109092553B (en) | 2018-08-01 | 2018-08-01 | Beneficiation method for obtaining low-sulfur diaspore concentrate |
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| CN109092553A true CN109092553A (en) | 2018-12-28 |
| CN109092553B CN109092553B (en) | 2020-03-27 |
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Citations (11)
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|---|---|---|---|---|
| DE2558411A1 (en) * | 1974-12-24 | 1976-07-08 | Almasfuezitoei Timfoeldgyar | PROCESS FOR DEGRADING GOETHITE-CONTAINING BAUXITES BY THE BAYER PROCESS |
| DE2754289A1 (en) * | 1976-12-07 | 1978-06-08 | Almasfuezitoei Timfoeldgyar | PROCESS FOR DIGESTIFYING BAUXITES CONTAINING DIASPOR AND / OR GOETHITE AND / OR FINE DISPERSE HAEMATITE |
| RU2256615C1 (en) * | 2004-02-04 | 2005-07-20 | Акционерное общество "Алюминий Казахстана" | Bauxite processing method |
| CN101302020A (en) * | 2008-06-26 | 2008-11-12 | 贵州大学 | High-sulphur alumyte desulfuration method |
| CN101456572A (en) * | 2008-12-26 | 2009-06-17 | 东北大学 | Method for producing alumina by using high sulphur bauxite |
| CN102228869A (en) * | 2011-04-14 | 2011-11-02 | 昆明理工大学 | Flotation method for desulfurization and desilication of high-silicon bauxite |
| CN102247818A (en) * | 2011-05-27 | 2011-11-23 | 中南大学 | Adsorbent for removing sulfate ions contained in water body as well as preparation and application thereof |
| CN102489406A (en) * | 2011-11-22 | 2012-06-13 | 中国铝业股份有限公司 | Method for treating sulfur bauxite |
| CN102815730A (en) * | 2012-08-07 | 2012-12-12 | 北京化工大学 | Method for oxidation desulfurization-magnetization iron-removal pretreatment on high-sulfur content bauxite |
| CN104556169A (en) * | 2014-12-24 | 2015-04-29 | 中南大学 | Iron and sulfur removing technology for sodium aluminate solution based on recyclable sulfur removal agent |
| CN105234006A (en) * | 2015-09-17 | 2016-01-13 | 中国铝业股份有限公司 | Method for synchronous floatation, desulfuration and desilicication of high-sulfur bauxite |
-
2018
- 2018-08-01 CN CN201810867219.XA patent/CN109092553B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2558411A1 (en) * | 1974-12-24 | 1976-07-08 | Almasfuezitoei Timfoeldgyar | PROCESS FOR DEGRADING GOETHITE-CONTAINING BAUXITES BY THE BAYER PROCESS |
| DE2754289A1 (en) * | 1976-12-07 | 1978-06-08 | Almasfuezitoei Timfoeldgyar | PROCESS FOR DIGESTIFYING BAUXITES CONTAINING DIASPOR AND / OR GOETHITE AND / OR FINE DISPERSE HAEMATITE |
| RU2256615C1 (en) * | 2004-02-04 | 2005-07-20 | Акционерное общество "Алюминий Казахстана" | Bauxite processing method |
| CN101302020A (en) * | 2008-06-26 | 2008-11-12 | 贵州大学 | High-sulphur alumyte desulfuration method |
| CN101456572A (en) * | 2008-12-26 | 2009-06-17 | 东北大学 | Method for producing alumina by using high sulphur bauxite |
| CN102228869A (en) * | 2011-04-14 | 2011-11-02 | 昆明理工大学 | Flotation method for desulfurization and desilication of high-silicon bauxite |
| CN102247818A (en) * | 2011-05-27 | 2011-11-23 | 中南大学 | Adsorbent for removing sulfate ions contained in water body as well as preparation and application thereof |
| CN102489406A (en) * | 2011-11-22 | 2012-06-13 | 中国铝业股份有限公司 | Method for treating sulfur bauxite |
| CN102815730A (en) * | 2012-08-07 | 2012-12-12 | 北京化工大学 | Method for oxidation desulfurization-magnetization iron-removal pretreatment on high-sulfur content bauxite |
| CN104556169A (en) * | 2014-12-24 | 2015-04-29 | 中南大学 | Iron and sulfur removing technology for sodium aluminate solution based on recyclable sulfur removal agent |
| CN105234006A (en) * | 2015-09-17 | 2016-01-13 | 中国铝业股份有限公司 | Method for synchronous floatation, desulfuration and desilicication of high-sulfur bauxite |
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| 孙进等: "针铁矿吸附水中硫酸根离子的试验研究", 《黄金》 * |
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