CN106269470A - A kind of high-sulfur bauxite washes concentrate desulfurization with roasting technique technique - Google Patents
A kind of high-sulfur bauxite washes concentrate desulfurization with roasting technique technique Download PDFInfo
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- CN106269470A CN106269470A CN201510358650.8A CN201510358650A CN106269470A CN 106269470 A CN106269470 A CN 106269470A CN 201510358650 A CN201510358650 A CN 201510358650A CN 106269470 A CN106269470 A CN 106269470A
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Abstract
The present invention relates to a kind of high-sulfur bauxite and wash concentrate desulfurization with roasting technique technique, belong to technical field of alumina production.Utilize specific surface area between large or fine granule different, the difference of surface attached water amount, reduces sieve upper ore deposit attached water by coarse and fine separation technique；Using flip flop screen as strength classification, dehydration equipment, high-sulfur bauxite washes concentrate in the case of attached water 10～20%, after flip flop screen strength classification, and oversize attached water < 7%.High-sulfur bauxite after using present invention process to process washes concentrate, and attached water reduces by 5～10%, desulfurization with roasting technique during energy expenditure is greatly lowered, significantly reduces production cost.Wash concentrate be directly entered desulfurization with roasting technique system it is thus possible to solve high attached water, cause the problem such as huge energy waste and alumina production cost rising.
Description
Technical field
The present invention relates to a kind of high-sulfur bauxite and wash concentrate desulfurization with roasting technique technique, belong to technical field of alumina production.
Background technology
China's bauxite resource enriches, and explored bauxite reserves reach 2,300,000,000 tons.Wherein, the water that sulfur-bearing is high
Duralumin stone type bauxite reserves reach 1.5 hundred million tons, account for about the 11.0% of gross reserves.This kind of Ore with middle high alumina,
In low silicon, high-sulfur, middle high aluminium silicon ratio Ore be main, and this type of Ore high-grade proportion is big, it is ensured that oxidation
Aluminum produces properly functioning, bauxite sulfur content > 0.5% time, need to carry out desulfurization entering before aluminium oxide flow process.
High-sulfur bauxite currently mainly has two kinds of techniques: ore dressing desulfurization and desulfurization with roasting technique.Ore dressing desulfurization technology maturation,
Resource utilization is high, but has investment height, the shortcomings such as operating cost is high, acid ore pulp corrosion.Desulfurization with roasting technique
Use high temperature process, be that element sulphur is oxidized to SO2Enter tail gas, rear by the solidification desulfurization of tail gas desulfurization technique.
It is acid strong that the method well solves ore dressing desulfurization ore pulp, and the shortcoming that equipment corrosion is serious obtains recent years
Develop on a large scale very much.
South China bauxite resource rich reserves with Guangxi as representative, has clay content high, and alumina silica ratio is high
Feature, enters process for making alumina after generally using ore washing method desliming.In addition, south China part
Bauxite the most also has the feature of high-sulfur, could enter alumina producing flow process after needing desulfurization.Wash concentrate attached
Water is higher, and usual attached water is 10～20% or higher.If high attached water is washed concentrate and is directly entered desulfurization with roasting technique
System, because attached water gasifies, will result in huge energy waste, causes alumina production cost to be substantially increased, no
It is beneficial to enterprise's long-term stability development.
Summary of the invention
It is an object of the invention to provide a kind of high-sulfur bauxite and wash concentrate desulfurization with roasting technique technique, solve high attached water and wash
Concentrate is directly entered desulfurization with roasting technique system, causes the problem such as huge energy waste and alumina production cost rising.
The technical scheme is that
A kind of high-sulfur bauxite washes concentrate desulfurization with roasting technique technique, utilizes specific surface area between large or fine granule different, table
The difference of face attached water amount, reduces sieve upper ore deposit attached water by coarse and fine separation technique；Use flip flop screen as strength classification,
Dehydration equipment, high-sulfur bauxite washes concentrate in the case of attached water 10～20%, after flip flop screen strength classification, sieve
Feeding attached water < 7%.
Described high-sulfur bauxite washes concentrate desulfurization with roasting technique technique, flip flop screen sieve aperture 3mm～15mm.
Described high-sulfur bauxite washes concentrate desulfurization with roasting technique technique, is additionally provided with the interim stockyard of minus mesh, and minus mesh is received
Feed the interim stockyard of minus mesh after collection to store, under the conditions of gravity-flow ventilation, it is achieved dehydration, reduce moisture and make
With.
Described high-sulfur bauxite washes concentrate desulfurization with roasting technique technique, minus mesh natural air drying, and moisture is reduced to 7%
After within, feeding common with oversize, feed desulfurization with roasting technique equipment.
Described high-sulfur bauxite washes concentrate desulfurization with roasting technique technique, when temporary derangement occurs in washup technique, stop to
During material, the interim stockyard of minus mesh is as emergent feed during washup operation fluctuation；Store in the interim stockyard of minus mesh
Minus mesh, be individually delivered to desulfurization with roasting technique equipment, reduce fluctuation, it is ensured that produce continual and steady operation.
The design philosophy of the present invention is:
Flip flop screen is a kind of efficient separation equipment, is mainly made up of three parts such as fixed frame, floating frame and screen clothes,
Wherein screen cloth mainly uses the resilient polyurethane screen of tool.In vibration processes, fixed frame is relatively fixed, floating
Dynamic frame in fixed frame before and after trace move, drive screen cloth periodically to relax tensioning relaxation exercise.At sieve
Under the tension and relaxation motion effect of net, on screen cloth, material is constantly thrown, is landed and throw, and maximum can obtain 50G
Active force, with reach thickness separate, the purpose of high efficiency screening.The present invention mainly utilizes and compares between large or fine granule
Surface area is different, the difference of surface attached water amount, and the principle being reduced sieve upper ore deposit attached water by coarse and fine separation technique is realized
's.
Advantages of the present invention and having the beneficial effect that:
The present invention use flip flop screen as dehydration equipment, according to large or fine granule specific surface area difference, can be by high-sulfur aluminum
Tu Kuang washes within concentrate attached water is down to 7% by 10～20%, significantly reduces roasting technique energy expenditure, saves
Alumina production cost.
Accompanying drawing explanation
Fig. 1 is that high-sulfur bauxite of the present invention washes concentrate desulfurization with roasting technique process diagram.
In figure, 1, high-sulfur bauxite wash concentrate；2, flip flop screen；3, oversize；4, minus mesh；5, under sieve
Expect interim stockyard；6, desulfurization with roasting technique equipment.
Detailed description of the invention
The present invention will be further described below in conjunction with the accompanying drawings, but protection scope of the present invention is not limited by embodiment
System, the percentage ratio in the present invention refers to percentage by weight.
As it is shown in figure 1, high-sulfur bauxite washes concentrate 1 feeds flip flop screen 2 through conveying equipment, sieve at flip flop screen 2
Under the effect of the strength tension and relaxation power of net, it is achieved high-effective classifying.On the sieve that granularity is big, specific surface area is little, attached water is low
Material 3 feeds desulfurization with roasting technique equipment 6 as qualified material through rubber conveyer, at high temperature realizes desulfurization.Granularity
Minus mesh 4 little, that specific surface area is big, attached water is high, feeds the interim stockyard of minus mesh 5 and stores after collection, standby.
Under the conditions of gravity-flow ventilation, it is achieved dehydration, reduce water function.
After minus mesh 4 moisture in the interim stockyard of minus mesh 5 is reduced within 7%, can mix with oversize 3
After conjunction, jointly feed desulfurization with roasting technique equipment 6.
When there is temporary derangement in washup technique, stops feed, the minus mesh stored in the interim stockyard of minus mesh 5
4, can individually be delivered to desulfurization with roasting technique equipment 6, reduce fluctuation, it is ensured that produce continual and steady operation.
Wherein, high-sulfur bauxite washes concentrate 1 attached water 10～20%, oversize 3 attached water < 7%.Flip flop screen 2 sieves
Net uses high resiliency screen cloth, and sieve aperture controls at 3mm～15mm.
Result shows, present invention process utilizes flip flop screen to process high-sulfur bauxite as effective powerful screening plant and washes
Concentrate, it is achieved thickness separates, in the case of washing concentrate attached water 10～20%, after flip flop screen strength classification, sieve
Feeding attached water < 7%.Using the high-sulfur bauxite after this PROCESS FOR TREATMENT to wash concentrate, attached water reduces by 5～10%, greatly
Energy expenditure during amplitude reduction desulfurization with roasting technique, significantly reduces production cost.
Claims (5)
1. a high-sulfur bauxite washes concentrate desulfurization with roasting technique technique, it is characterised in that utilizes and compares between large or fine granule
Surface area is different, the difference of surface attached water amount, reduces sieve upper ore deposit attached water by coarse and fine separation technique；Use tension and relaxation
Sieve is as strength classification, dehydration equipment, and high-sulfur bauxite washes concentrate in the case of attached water 10～20%, through tension and relaxation
After sieve strength classification, oversize attached water < 7%.
2. wash concentrate desulfurization with roasting technique technique according to the high-sulfur bauxite described in claim 1, it is characterised in that relax
Open sieve sieve aperture 3mm～15mm.
3. wash concentrate desulfurization with roasting technique technique according to the high-sulfur bauxite described in claim 1, it is characterised in that also
Being provided with the interim stockyard of minus mesh, minus mesh feeds the interim stockyard of minus mesh and stores, in gravity-flow ventilation condition after collecting
Under, it is achieved dehydration, reduce water function.
4. wash concentrate desulfurization with roasting technique technique according to the high-sulfur bauxite described in claim 1, it is characterised in that sieve
Blanking natural air drying, moisture be reduced to 7% within after, feeding common with oversize, feed desulfurization with roasting technique equipment.
5. wash concentrate desulfurization with roasting technique technique according to the high-sulfur bauxite described in claim 1, it is characterised in that when
There is temporary derangement in washup technique, and when stopping feed, the interim stockyard of minus mesh is as answering during washup operation fluctuation
Anxious feed；The minus mesh stored in the interim stockyard of minus mesh, is individually delivered to desulfurization with roasting technique equipment, reduces and produces
Fluctuation, it is ensured that produce continual and steady operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510358650.8A CN106269470A (en) | 2015-06-26 | 2015-06-26 | A kind of high-sulfur bauxite washes concentrate desulfurization with roasting technique technique |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510358650.8A CN106269470A (en) | 2015-06-26 | 2015-06-26 | A kind of high-sulfur bauxite washes concentrate desulfurization with roasting technique technique |
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| CN106269470A true CN106269470A (en) | 2017-01-04 |
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| CN201510358650.8A Pending CN106269470A (en) | 2015-06-26 | 2015-06-26 | A kind of high-sulfur bauxite washes concentrate desulfurization with roasting technique technique |
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Citations (6)
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| CN101011694A (en) * | 2007-01-15 | 2007-08-08 | 中国矿业大学 | Plate type static-indeterminant combination bearing beam oversize vibration screen |
| CN101462111A (en) * | 2008-12-03 | 2009-06-24 | 陆信 | One-graininess multi-stage oscillating screen |
| CN101502833A (en) * | 2008-12-11 | 2009-08-12 | 奥瑞（天津）工业技术有限公司 | High-frequency dewatering screen |
| CN101513579A (en) * | 2009-02-27 | 2009-08-26 | 兖州煤业股份有限公司 | Underground vibration sieve for separating and dehydrating water coal |
| CN202823854U (en) * | 2012-08-08 | 2013-03-27 | 奥瑞（天津）工业技术有限公司 | Three-layer flip-flow screen |
| CN103506226A (en) * | 2012-06-27 | 2014-01-15 | 沈阳铝镁设计研究院有限公司 | High-efficiency dehydration technology for reverse flotation products of high sulfur bauxite |
-
2015
- 2015-06-26 CN CN201510358650.8A patent/CN106269470A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101011694A (en) * | 2007-01-15 | 2007-08-08 | 中国矿业大学 | Plate type static-indeterminant combination bearing beam oversize vibration screen |
| CN101462111A (en) * | 2008-12-03 | 2009-06-24 | 陆信 | One-graininess multi-stage oscillating screen |
| CN101502833A (en) * | 2008-12-11 | 2009-08-12 | 奥瑞（天津）工业技术有限公司 | High-frequency dewatering screen |
| CN101513579A (en) * | 2009-02-27 | 2009-08-26 | 兖州煤业股份有限公司 | Underground vibration sieve for separating and dehydrating water coal |
| CN103506226A (en) * | 2012-06-27 | 2014-01-15 | 沈阳铝镁设计研究院有限公司 | High-efficiency dehydration technology for reverse flotation products of high sulfur bauxite |
| CN202823854U (en) * | 2012-08-08 | 2013-03-27 | 奥瑞（天津）工业技术有限公司 | Three-layer flip-flow screen |
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Application publication date: 20170104 |