CN102614710A - Filtering process of concentrate in stage concentration flow - Google Patents
Filtering process of concentrate in stage concentration flow Download PDFInfo
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- CN102614710A CN102614710A CN2012101241063A CN201210124106A CN102614710A CN 102614710 A CN102614710 A CN 102614710A CN 2012101241063 A CN2012101241063 A CN 2012101241063A CN 201210124106 A CN201210124106 A CN 201210124106A CN 102614710 A CN102614710 A CN 102614710A
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Abstract
The invention belongs to the technical field of a filtering process of concentrate in a stage concentration flow. The filtering process comprises the following steps of: feeding gravity concentrate obtained by a gravity concentration process into a mixing barrel I and mixing; feeding the gravity concentrate mixed by the mixing barrel I into a vacuum filter to dehydrate to separate gravity concentration filter cake with water content of 8.5-9.5 percent and filtrate; feeding flotation concentrate obtained by a reverse flotation process into a mixing barrel II and mixing; feeding the flotation concentrate mixed by the mixing barrel II into a ceramic filter or pressure filter to dehydrate to separate flotation filter cake and filtrate; mixing the gravity concentration filter cake and the flotation concentrate filter cake into comprehensive concentrate; and mixing the filtrate of the vacuum filter and the filtrate of the ceramic filter or pressure filter into mixed filtrate and feeding into a condensing system to perform condensing treatment. According to the filtering process, the gravity concentration concentrate and the reverse flotation concentrate are filtered respectively, and then the filter products are mixed into the comprehensive concentrate, so that the concentrate water of the concentrate can be filtered and the utilization rate of equipment of the filter can be increased.
Description
Technical field
The invention belongs to concentrate thickening technical field, especially relate to the filtering technique of a kind of concentrate in the stage grading flow process.
Background technology
In pelletizing and SINTERING PRODUCTION, filtration is an important ring wherein.Filtration is that concentrate is dewatered through physical method, satisfies the required iron ore concentrate moisture of next procedure to reach.Iron ore concentrate moisture after the filtration and filter usage factor are to investigate an important indicator of filtering operation.Pelletizing and sintering to the moisture requirement of concentrate generally below 9.5%; In order to obtain the moisture of this requirement; In the stage grading flow process; Usually obtain concentrate respectively in gravity treatment operation and reverse flotation operation, then two kinds of concentrate are mixed into comprehensive concentrate, comprehensive concentrate is filtered through filter obtain the qualified concentrate moisture of moisture again.But, because mixed comprehensive concentrate because the medicament in the concentrate through reverse flotation is residual, reduces filtrability; As the usage factor of filter can reach 1 to adopt vacuum filter to filter then; But the concentrate moisture after filtering is between 9.5%-10.0%, and moisture can not satisfy the production needs, and moisture can be controlled at below 9.5% if adopt ceramic filter or filter press to filter then; But efficient reduces, and general filter usage factor is about 0.6-0.8.
Summary of the invention
The purpose of this invention is to provide a kind of utilization rate that in the stage grading flow process, not only can improve filter; And can satisfy the filtering technique of concentrate in the stage grading flow process of concentrate water content; This technology makes filter effect better, and usage ratio of equipment is higher simultaneously.
The objective of the invention is to realize through following technical proposals:
The filtering technique of a kind of concentrate of the present invention in the stage grading flow process is characterized in that it comprises the following steps:
A, the concentration that obtains through the gravity treatment operation are that the gravity concentrate of 55-70 % feeds the agitator I and stirs; To feed the vacuum filter dehydration through the gravity concentrate after the agitator I stirs, gravity treatment filter cake and the vacuum filter filtrating that moisture content is 8.5%-9.5% is isolated in said vacuum filter dehydration;
B, the concentration that obtains through the reverse flotation operation are that the flotation concentrate of 55-70 % feeds the agitator II and stirs; To feed the dehydration of ceramic filter or filter press through the flotation concentrate after said agitator II stirs, said ceramic filter or filter press filter to isolate flotation filter cake and ceramic filter or the filter press filtrating that moisture is 8.5%-9.5%;
C, described gravity treatment filter cake and described flotation filter cake are mixed into comprehensive concentrate;
D, described vacuum filter filtrating and described ceramic filter or filter press filtrating is mixed into that mixing filtrates and feeds concentration systems carry out concentration.
Advantage of the present invention:
The present invention passes through gravity concentrate and concentrate through reverse flotation difference filtration treatment, and filter effect is better, because vacuum filter is to be the equipment that motive force realizes Separation of Solid and Liquid with the negative pressure of vacuum; Therefore be more suitable in filtration treatment, and the operation principle of ceramic filter profile and mechanism and disk vacuum filter is similar, promptly under the effect of pressure difference to gravity concentrate; When suspension passes through filter medium; Particle is trapped within dielectric surface and forms filter cake, and liquid then flows out through filter medium, has reached the purpose of Separation of Solid and Liquid; This filter is specially adapted to the filtration of concentrate through reverse flotation; Again filtering product is mixed into comprehensive concentrate, not only can satisfies the concentrate moisture that filters concentrate, and farthest improved the utilization rate of equipment and installations of filter.
Description of drawings
Fig. 1 is a process chart of the present invention.
The specific embodiment
Further specify the specific embodiment of the present invention below in conjunction with accompanying drawing.
As shown in Figure 1, the filtering technique of a kind of concentrate in the stage grading flow process is characterized in that it comprises the following steps:
A, the concentration that obtains through the gravity treatment operation are that the gravity concentrate of 55-70 % feeds the agitator I and stirs, and will feed the vacuum filter dehydration through the gravity concentrate after the agitator I stirs.Gravity treatment filter cake and the vacuum filter filtrating that moisture content is 8.5%-9.5% is isolated in said vacuum filter dehydration;
B, the concentration that obtains through the reverse flotation operation are that the flotation concentrate of 55-70 % feeds the agitator II and stirs; To feed the dehydration of ceramic filter or filter press through the flotation concentrate after said agitator II stirs, said ceramic filter or filter press filter to isolate flotation filter cake and ceramic filter or the filter press filtrating that moisture is 8.5%-9.5%;
C, described gravity treatment filter cake and described flotation filter cake are mixed into comprehensive concentrate;
D, described vacuum filter filtrating and described ceramic filter or filter press filtrating is mixed into that mixing filtrates and feeds concentration systems carry out concentration.
The present invention passes through gravity concentrate and concentrate through reverse flotation difference filtration treatment, and filter effect is better, because vacuum filter is to be the equipment that motive force realizes Separation of Solid and Liquid with the negative pressure of vacuum; Therefore be more suitable in filtration treatment, and the operation principle of ceramic filter profile and mechanism and disk vacuum filter is similar, promptly under the effect of pressure difference to gravity concentrate; When suspension passes through filter medium; Particle is trapped within dielectric surface and forms filter cake, and liquid then flows out through filter medium, has reached the purpose of Separation of Solid and Liquid; This filter is specially adapted to the filtration of concentrate through reverse flotation; Again filtering product is mixed into comprehensive concentrate, not only can satisfies the concentrate moisture that filters concentrate, and farthest improved the utilization rate of equipment and installations of filter.
Claims (1)
1. the filtering technique of a concentrate in the stage grading flow process is characterized in that it comprises the following steps:
A, the concentration that obtains through the gravity treatment operation are that the gravity concentrate of 55-70 % feeds the agitator I and stirs; To feed the vacuum filter dehydration through the gravity concentrate after the agitator I stirs, gravity treatment filter cake and the vacuum filter filtrating that moisture content is 8.5%-9.5% is isolated in said vacuum filter dehydration;
B, the concentration that obtains through the reverse flotation operation are that the flotation concentrate of 55-70 % feeds the agitator II and stirs; To feed the dehydration of ceramic filter or filter press through the flotation concentrate after said agitator II stirs, said ceramic filter or filter press filter to isolate flotation filter cake and ceramic filter or the filter press filtrating that moisture is 8.5%-9.5%;
C, described gravity treatment filter cake and described flotation filter cake are mixed into comprehensive concentrate;
D, described vacuum filter filtrating and described ceramic filter or filter press filtrating is mixed into that mixing filtrates and feeds concentration systems carry out concentration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101241063A CN102614710A (en) | 2012-04-26 | 2012-04-26 | Filtering process of concentrate in stage concentration flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101241063A CN102614710A (en) | 2012-04-26 | 2012-04-26 | Filtering process of concentrate in stage concentration flow |
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| Publication Number | Publication Date |
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| CN102614710A true CN102614710A (en) | 2012-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012101241063A Pending CN102614710A (en) | 2012-04-26 | 2012-04-26 | Filtering process of concentrate in stage concentration flow |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103272680A (en) * | 2013-06-13 | 2013-09-04 | 鞍钢集团矿业公司 | Gravity regrinding technology capable of improving balling performance of hematite ore concentrates |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1548234A (en) * | 2003-05-23 | 2004-11-24 | 鞍钢集团鞍山矿业公司研究所 | Ore dressing process of treating poor hematite |
| CN101254375A (en) * | 2007-12-17 | 2008-09-03 | 中国铝业股份有限公司 | Dewatering process screening fine ore of alumyte |
| CN101298067A (en) * | 2008-06-24 | 2008-11-05 | 武汉理工大学 | Filter method of reverse flotation iron concentrate of instant acidified degradation |
| CN101716439A (en) * | 2009-12-18 | 2010-06-02 | 中国铝业股份有限公司 | Method for dehydrating micro-particle slurry |
| CN102407049A (en) * | 2011-09-14 | 2012-04-11 | 鞍钢集团矿业公司 | Multistage-combined filtering method for hematite concentrate |
-
2012
- 2012-04-26 CN CN2012101241063A patent/CN102614710A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1548234A (en) * | 2003-05-23 | 2004-11-24 | 鞍钢集团鞍山矿业公司研究所 | Ore dressing process of treating poor hematite |
| CN101254375A (en) * | 2007-12-17 | 2008-09-03 | 中国铝业股份有限公司 | Dewatering process screening fine ore of alumyte |
| CN101298067A (en) * | 2008-06-24 | 2008-11-05 | 武汉理工大学 | Filter method of reverse flotation iron concentrate of instant acidified degradation |
| CN101716439A (en) * | 2009-12-18 | 2010-06-02 | 中国铝业股份有限公司 | Method for dehydrating micro-particle slurry |
| CN102407049A (en) * | 2011-09-14 | 2012-04-11 | 鞍钢集团矿业公司 | Multistage-combined filtering method for hematite concentrate |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103272680A (en) * | 2013-06-13 | 2013-09-04 | 鞍钢集团矿业公司 | Gravity regrinding technology capable of improving balling performance of hematite ore concentrates |
| CN103272680B (en) * | 2013-06-13 | 2014-12-10 | 鞍钢集团矿业公司 | Gravity regrinding technology capable of improving balling performance of hematite ore concentrates |
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Application publication date: 20120801 |