CN102407049B - Multistage-combined filtering method for hematite concentrate - Google Patents
Multistage-combined filtering method for hematite concentrate Download PDFInfo
- Publication number
- CN102407049B CN102407049B CN 201110271092 CN201110271092A CN102407049B CN 102407049 B CN102407049 B CN 102407049B CN 201110271092 CN201110271092 CN 201110271092 CN 201110271092 A CN201110271092 A CN 201110271092A CN 102407049 B CN102407049 B CN 102407049B
- Authority
- CN
- China
- Prior art keywords
- filter
- thickener
- concentrate
- pulp
- overflow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Manufacture And Refinement Of Metals (AREA)
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 ceramic filter at present mostly, 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 by fine grinding simultaneously, because granularity of concentrate is thin, the filter usage factor is low, only is 0.30t/m
2Red iron ore concentrate granularity,-10 μ m productive rates reach 22.35%,-71 μ m productive rates reach 88.25%, because of granularity of concentrate ultra-fine, argillization and contain floating agent, cause 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, filtration operation cost height.
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, before entering thickener, red iron ore concentrate with pump 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 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 filtrate are given to 2 sections thickeners and concentrate, reaching weight concentration is 55 ~ 65%, depositing reservoir is delivered in the overflow of 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, ore pulp is from flowing to ceramic filter, enter factory's water circulation system after the filtrate cooling of ceramic filter, 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, finish 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 difficult problem of coarse grain gravity concentrate and the filtration of ultra-fine grain concentrate through reverse flotation, filter cake moisture content reaches below 9.8%, satisfied the SINTERING PRODUCTION demand, improved the usage factor of filter, reduced energy resource consumption, saved 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 entering thickener, red iron ore concentrate with pump 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 with the PH meter, make its pH value reach 6.8 ~ 7.2 neutrality, after adding a certain amount of acid, in and ore pulp in NaOH, 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 filtrate 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 the filter bag that leaking out appear in the operation one-period, damage etc. influences filter vacuum is changed 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, ore pulp is from flowing to ceramic filter, enter factory's water circulation system after the filtrate cooling of ceramic filter, 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, finish whole dehydration and filtration operation.
For guaranteeing the filter effect of ceramic filter, need ceramic filter is cleaned, namely 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, before entering thickener, red iron ore concentrate with pump 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 with pH meter, make its pH value reach 6.8～7.2, feed 1 section thickener through comprehensive concentrate chute and carry out thickening, reaching weight concentration is 60% ~ 70%;
2) underflow after 1 section thickener concentrates is delivered to 1 section 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 filtrate are given to 2 sections thickeners and concentrate, reaching weight concentration is 55% ~ 65%, depositing reservoir is delivered in the overflow of 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 2 sections ore pulp distributing troughs through the slag stock pump, ore pulp is from flowing to ceramic filter, enter factory's water circulation system after the filtrate cooling of ceramic filter, 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, finish whole dehydration and filtration operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110271092 CN102407049B (en) | 2011-09-14 | 2011-09-14 | Multistage-combined filtering method for hematite concentrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110271092 CN102407049B (en) | 2011-09-14 | 2011-09-14 | Multistage-combined filtering method for hematite concentrate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102407049A CN102407049A (en) | 2012-04-11 |
| CN102407049B true CN102407049B (en) | 2013-09-04 |
Family
ID=45909575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110271092 Active CN102407049B (en) | 2011-09-14 | 2011-09-14 | Multistage-combined filtering method for hematite concentrate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102407049B (en) |
Families Citing this family (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 |
| 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 |
| 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 |
Citations (3)
| 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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR0304443B1 (en) * | 2003-10-28 | 2012-08-21 | process for obtaining high thio2 and low radionuclide titanium concentrates from mechanical anatase concentrates. |
-
2011
- 2011-09-14 CN CN 201110271092 patent/CN102407049B/en active Active
Patent Citations (3)
| 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 |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102407049A (en) | 2012-04-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101693928B (en) | Method for purifying primarily selected slag steel | |
| CN106242109B (en) | Process for utilizing waste water generated in phosphorite direct and reverse flotation production in sections | |
| CN102407049B (en) | Multistage-combined filtering method for hematite concentrate | |
| CN104368440A (en) | Novel technology and device for Bayer process-based separation of iron in high-iron red mud | |
| CN103570179A (en) | Underground mine water treatment system and method | |
| CN201250267Y (en) | Purification system for gold ore concentrate cinder acid leaching solution | |
| CN105536979A (en) | Method for extracting micro-fine-particle iron ore concentrate from tailings obtained after primary iron separation | |
| CN208839200U (en) | Steelmaking converter turbid circulating water secondary treatment system | |
| CN207462827U (en) | A kind of silico briquette cutting processing cooling recirculation system | |
| CN102319717A (en) | Method for dryly discharging phosphate tailing | |
| CN102701477A (en) | Waste muddy water recycling system | |
| CN101920137B (en) | Ceramic filtering machine dehydrating system and dehydration technique thereof | |
| CN105567888B (en) | A kind of method that utilization hydrocyclone separation technology method reclaims Iron concentrate from ferrous iron containing metallurgical dust | |
| CN202688121U (en) | Waste muddy water recycling system | |
| CN103447147A (en) | Novel low grade hematite ore concentration and water purification process | |
| CN102618720A (en) | Method for backwash leaching and washing mineral leached materials | |
| CN202010452U (en) | Ore slurry concentration and settlement system | |
| CN109224546A (en) | A kind of filtration washing integrated device and method | |
| CN211078717U (en) | Waste water recovery device for cleaning equipment for lead-zinc ore beneficiation production | |
| CN108554626A (en) | Blast furnace granulated slag deironing apparatus | |
| CN203400575U (en) | Water processing system in dehydration process of refined iron ore pulp | |
| CN208260972U (en) | A kind of rare-earth tailing recycling and reusing system | |
| CN203781934U (en) | Sewage treatment equipment of ceramic production line | |
| CN102626571A (en) | Slime water treatment process for separately clarifying filtrate | |
| CN203034063U (en) | Recycling system for steelmaking sludge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
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 |