CN102407049A - Multistage-combined filtering method for hematite concentrate - Google Patents
Multistage-combined filtering method for hematite concentrate Download PDFInfo
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- CN102407049A CN102407049A CN2011102710923A CN201110271092A CN102407049A CN 102407049 A CN102407049 A CN 102407049A CN 2011102710923 A CN2011102710923 A CN 2011102710923A CN 201110271092 A CN201110271092 A CN 201110271092A CN 102407049 A CN102407049 A CN 102407049A
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Abstract
The invention relates to a multistage-combined filtering method for a hematite concentrate. The method comprises the steps of: adding acid into hematite concentrate pulp to be filtered for neutralization treatment, then delivering the pulp into a hematite concentrate multistage-combined filtering thickener for condensation and dehydration through a launder; pumping the underflow condensed by a first stage thickener to a pulp distributing groove, letting the pulp flow to a disc vacuum filter by itself, leaving the overflow and filtrate of the disc vacuum filter to a second stage thickener for condensation, and sending the overflow of the first stage thickener to a clarification tank, thus obtaining a filter cake of the disc vacuum filter as a final solid material; pumping the underflow of the second stage thickener to the pulp distributing groove with a slurry pump, letting the pulp flow to a ceramic filter by itself, making the cooled filtrate of the ceramic filter enter a water circulation system, and leaving the overflow of the ceramic filter to return to the second stage thickener, thus obtaining a filter cake of the ceramic filter as a final solid material, conveying the filter cakes of the two filters to a stock bin by a belt conveyer, thus finishing the whole dehydration and filtration operations. The method of the invention effectively solves the problem of difficult filtration for coarse grain gravity concentrates and ultrafine grain reverse flotation concentrates.
Description
Technical field
The invention belongs to the ore-dressing technique technical field, particularly a kind of red iron ore concentrate segmentation combination filter method.
Background technology
Sorting process employing two sections continuous ore grindings, chats of ore dressing are regrinded, gravity treatment-magnetic separation-stepped-flotation separation combined process flow is handled bloodstone.Filter plant adopted drumfilter, disk filter, band filter, ceramic filter etc. mostly in the past.Adopt at present mostly ceramic filter, this equipment is to fine with the magnetite concentrate filter effect of magnetic separation production technology output, but to the red iron ore concentrate of reverse flotation because the effect of floatation process and medicament; Floatation process need carry out in alkaline ore pulp; In order to improve the monomer dissociation of iron mineral, often handle simultaneously, because granularity of concentrate is thin through fine grinding; The filter usage factor is low, is merely 0.30t/m
2Red iron ore concentrate granularity ,-10 μ m productive rates reach 22.35%, and-71 μ m productive rates reach 88.25%; Ultra-fine because of granularity of concentrate, argillization and contain floating agent causes very big difficulty to thickening filtration; It is frequent to cause the ceramic filter ceramic wafer to clean, and life cycle is short, and operating rate is low; Usage factor is low, and the filtration operation cost is high.
Summary of the invention
The purpose of this invention is to provide a kind of red iron ore concentrate segmentation combination filter method, adopt ceramic filter and disc vacuum filter segmentation integration of operation to filter red iron ore concentrate, efficiently solve the problem that coarse grain gravity concentrate and ultra-fine grain concentrate through reverse flotation filter difficulty.
The present invention seeks to realize like this.
According to red iron ore concentrate segmentation combination filter method, comprise the steps:
1) with red iron ore concentrate ore pulp to be filtered after adding sour neutralisation treatment;, red iron ore concentrate the sulfuric acid of content 99% is delivered to comprehensive concentrate chute from the sulfuric acid holding vessel before getting into thickener with pump; Detect the ore pulp that adds after acid neutralizes with the PH meter; Make its pH value reach 6.8 ~ 7.2 neutrality, feed 1 section thickener through chute and carry out thickening, reaching weight concentration is 60 ~ 70%;
2) underflow after 1 section thickener concentrates is delivered to the ore pulp distributing trough through the slag stock pump; Ore pulp is from flowing to disc vacuum filter; The overflow of disc vacuum filter and filtrating are given to 2 sections thickeners and concentrate, and depositing reservoir is delivered in the overflow that reaches weight concentration and be 55 ~ 65%, 1 section thickener; The filter cake of disc vacuum filter is final solid material, and its moisture content is≤9.8%;
3) 2 sections thickener underflows are delivered to the ore pulp distributing trough through the slag stock pump, and ore pulp is from flowing to ceramic filter, and the filtrating cooling back of ceramic filter gets into factory's water circulation system; The ceramic filter overflow is returned 2 sections thickeners and is concentrated; Form circulation, the filter cake of ceramic filter is final solid material, and its moisture content is≤9.8% filter cake; The filter cake of disc vacuum filter and the filter cake of ceramic filter are transported to feed bin through belt conveyer, accomplish whole dehydration and filtration operation.
The invention has the beneficial effects as follows: because the present invention adopts disc vacuum filter and ceramic filter segmentation integration of operation to filter red iron ore concentrate, efficiently solve the problem that coarse grain gravity concentrate and ultra-fine grain concentrate through reverse flotation filter difficulty, filter cake moisture content reaches below 9.8%; Satisfied the SINTERING PRODUCTION demand; Improve the usage factor of filter, reduced energy resource consumption, practiced thrift operating cost; Filtrate cycle is used simultaneously; Realize the target of zero discharge of industrial waste water, enterprise makes contributions for the friendly type of Anshan iron and steel plant constructing environment, has remarkable economic efficiency and social benefit.
Description of drawings
Fig. 1 makes up the process chart of filtration for the present invention.
The specific embodiment:
Below in conjunction with accompanying drawing invention is described further.
As shown in Figure 1, according to red iron ore concentrate segmentation combination filter method, comprise the steps:
1) with red iron ore concentrate ore pulp to be filtered after adding sour neutralisation treatment; Before red iron ore concentrate gets into thickener, the sulfuric acid of content 99% is delivered to comprehensive concentrate chute from the sulfuric acid holding vessel, detect the ore pulp that adds after acid neutralizes, make its pH value reach 6.8 ~ 7.2 neutrality with the PH meter with pump; After adding a certain amount of acid; In with ore pulp in NaOH, simultaneously the carbochain in the cornstarch in the floating agent is effectively ruptured, its pH value reaches 6.8 ~ 7.2 neutrality; Feed 1 section thickener through chute and carry out thickening, reaching weight concentration is 60 ~ 70%;
2) underflow after 1 section thickener concentrates is delivered to the ore pulp distributing trough through the slag stock pump, and ore pulp flow to disc vacuum filter certainly,
The overflow of disc vacuum filter and filtrating are given to 2 sections thickeners and concentrate, and depositing reservoir is delivered in the overflow that reaches weight concentration and be 55 ~ 65%, 1 section thickener, and the filter cake of disc vacuum filter is final solid material, and its moisture content is≤9.8%; In order to guarantee the filter effect of disc vacuum filter, need to move that leaking out appears in one-period, damage etc. influences the filter bag of filter vacuum and changes general about 10 days of one-period;
3) 2 sections thickener underflows are delivered to the ore pulp distributing trough through the slag stock pump, and ore pulp is from flowing to ceramic filter, and the filtrating cooling back of ceramic filter gets into factory's water circulation system; The ceramic filter overflow is returned 2 sections thickeners and is concentrated; Form circulation, the filter cake of ceramic filter is final solid material, and its moisture content is≤9.8% filter cake; The filter cake of disc vacuum filter and the filter cake of ceramic filter are transported to feed bin through belt conveyer, accomplish whole dehydration and filtration operation.
For guaranteeing the filter effect of ceramic filter, need ceramic filter is cleaned, promptly add water toward ceramic filter; Every 25Kg pours ceramic filter into oxalic acid; Heat water to 50 ℃, cleaned 40 minutes, pour every 60L of nitric acid into ceramic filter then and cleaned 60 minutes.Every operation was cleaned once in 4 hours.
Claims (1)
1. a red iron ore concentrate segmentation combination filter method comprises the steps:
1) with red iron ore concentrate ore pulp to be filtered after adding sour neutralisation treatment;, red iron ore concentrate the sulfuric acid of content 99% is delivered to comprehensive concentrate chute from the sulfuric acid holding vessel before getting into thickener with pump; Detect the ore pulp that adds after acid neutralizes with the PH meter; Make its pH value reach 6.8 ~ 7.2 neutrality, feed 1 section thickener through chute and carry out thickening, reaching weight concentration is 60 ~ 70%;
2) underflow after 1 section thickener concentrates is delivered to the ore pulp distributing trough through the slag stock pump; Ore pulp is from flowing to disc vacuum filter; The overflow of disc vacuum filter and filtrating are given to 2 sections thickeners and concentrate, and depositing reservoir is delivered in the overflow that reaches weight concentration and be 55 ~ 65%, 1 section thickener; The filter cake of disc vacuum filter is final solid material, and its moisture content is≤9.8%;
3) 2 sections thickener underflows are delivered to the ore pulp distributing trough through the slag stock pump, and ore pulp is from flowing to ceramic filter, and the filtrating cooling back of ceramic filter gets into factory's water circulation system; The ceramic filter overflow is returned 2 sections thickeners and is concentrated; Form circulation, the filter cake of ceramic filter is final solid material, and its moisture content is≤9.8% filter cake; The filter cake of disc vacuum filter and the filter cake of ceramic filter are transported to feed bin through belt conveyer, accomplish whole dehydration and filtration operation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110271092 CN102407049B (en) | 2011-09-14 | 2011-09-14 | Multistage-combined filtering method for hematite concentrate |
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| CN 201110271092 CN102407049B (en) | 2011-09-14 | 2011-09-14 | Multistage-combined filtering method for hematite concentrate |
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| CN102407049A true CN102407049A (en) | 2012-04-11 |
| CN102407049B CN102407049B (en) | 2013-09-04 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102614710A (en) * | 2012-04-26 | 2012-08-01 | 鞍钢集团矿业公司 | Filtering process of concentrate in stage concentration flow |
| 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 |
| CN104841199A (en) * | 2015-04-28 | 2015-08-19 | 南京梅山冶金发展有限公司 | Sulfur concentrate concentration and dehydration process |
| CN108842059A (en) * | 2018-07-13 | 2018-11-20 | 山西太钢不锈钢股份有限公司 | The manufacturing method of green pellets |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1806889A (en) * | 2005-12-23 | 2006-07-26 | 沈阳铝镁设计研究院 | Bauxite concentrate selection filtering unit and filtering method |
| US20070148066A1 (en) * | 2003-10-28 | 2007-06-28 | Horta Ronaldo D M | Process to obtain titanium concentrates with high contents of tio2 and low contents of radionuclide elements from anatase mechanical concentrates |
| CN101708487A (en) * | 2009-09-05 | 2010-05-19 | 孙小宇 | Method for utilizing mill tailings by acidifying |
| CN101716439A (en) * | 2009-12-18 | 2010-06-02 | 中国铝业股份有限公司 | Method for dehydrating micro-particle slurry |
-
2011
- 2011-09-14 CN CN 201110271092 patent/CN102407049B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070148066A1 (en) * | 2003-10-28 | 2007-06-28 | Horta Ronaldo D M | Process to obtain titanium concentrates with high contents of tio2 and low contents of radionuclide elements from anatase mechanical concentrates |
| CN1806889A (en) * | 2005-12-23 | 2006-07-26 | 沈阳铝镁设计研究院 | Bauxite concentrate selection filtering unit and filtering method |
| CN101708487A (en) * | 2009-09-05 | 2010-05-19 | 孙小宇 | Method for utilizing mill tailings by acidifying |
| CN101716439A (en) * | 2009-12-18 | 2010-06-02 | 中国铝业股份有限公司 | Method for dehydrating micro-particle slurry |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102614710A (en) * | 2012-04-26 | 2012-08-01 | 鞍钢集团矿业公司 | Filtering process of concentrate in stage concentration flow |
| 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 |
| CN104841199A (en) * | 2015-04-28 | 2015-08-19 | 南京梅山冶金发展有限公司 | Sulfur concentrate concentration and dehydration process |
| CN108842059A (en) * | 2018-07-13 | 2018-11-20 | 山西太钢不锈钢股份有限公司 | The manufacturing method of green pellets |
| CN108842059B (en) * | 2018-07-13 | 2019-11-08 | 山西太钢不锈钢股份有限公司 | The manufacturing method of green pellets |
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| CN102407049B (en) | 2013-09-04 |
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Address after: 114001 Anshan District, Liaoning, No. 219 Road, No. 39, Tiedong Patentee after: Anshan Iron and Steel Group Mining Co., Ltd. Address before: 114001 Anshan District, Liaoning, No. 219 Road, No. 39, Tiedong Patentee before: Angang Group Mine Company |