CN101632957A - Process for processing hematite ore containing iron carbonate - Google Patents
Process for processing hematite ore containing iron carbonate Download PDFInfo
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- CN101632957A CN101632957A CN200810012400A CN200810012400A CN101632957A CN 101632957 A CN101632957 A CN 101632957A CN 200810012400 A CN200810012400 A CN 200810012400A CN 200810012400 A CN200810012400 A CN 200810012400A CN 101632957 A CN101632957 A CN 101632957A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention relates to a process for processing hematite ore containing iron carbonate. The process comprises the following steps that: ore is subjected to ore grinding to achieve monomer separation; concentrated ore obtained through magnetic separation of a weak magnetic separator, a medium magnetic separator and a strong magnetic separator are converged; the converged concentrated ore is subjected to coarse separation and fine separation sequentially by a floatation medicament with strong selective collection capacity on the iron carbonate to obtain iron carbonate concentrated ore; the obtained iron carbonate concentrated ore enters a thermal decomposition process; the decomposed ore enters a water-addition stirring tank to prepare ore pulp with appropriate concentration; the ore pulp and tailings after being subjected to floatation by the iron carbonate are mixed together for reverse floatation of the hematite; and after the reverse flotation, final concentrated ore and final tailings are obtained. The thermal decomposition process utilizes a rotary kiln to carry out thermal decomposition on the iron carbonate concentrated ore. The weight percentage of the appropriate concentration of the ore pulp is between 42 and 48 percent. The process can effectively reclaim the iron carbonate lost in the tailings, improves the grade of the final concentrated ore, provides referential significance for domestic similar ore separation and has remarkable economic and social benefits.
Description
Technical field
The present invention relates to contain the treatment process technical field of the hematite ore of ferric carbonate, particularly a kind of processing contains the technology of the hematite ore of ferric carbonate.
Background technology
Recent years, in the bloodstone sorting process with ore grinding-in weak strong magnetic-reverse floatation process obtained major technological breakthrough, reached concentrate grade 67.5%, the desirable technique index of metal recovery rate more than 75%, but contain a certain amount of ferric carbonate or ferric carbonate content in the ore based on bloodstone and reach 10% when above, its beneficiating technology index will severe exacerbation, causes concentrate grade and metal recovery rate to descend significantly.Influence the raising of blast furnace feeding grade on the one hand, reduced the usage factor of blast furnace, caused the loss of mineral resources on the other hand.
Summary of the invention
The object of the present invention is to provide a kind of processing to contain the technology of the hematite ore of ferric carbonate.
The objective of the invention is to realize by following technical proposals:
Processing of the present invention contains the technology of the hematite ore of ferric carbonate, comprise ore after ore grinding reaches monomer separation, through weak, in, three kinds of concentrate not obtaining of high intensity magnetic separation, it is characterized in that comprising the steps:
1) with ore after ore grinding reaches monomer separation, three kinds of concentrate that obtain through low intensity magnetic separation machine-middle magnetic separator-intensity magnetic separator magnetic separation converge,
2) utilize the concentrate that will converge to the strong floating agent of the selective collecting ability of ferric carbonate, selected after roughly selecting earlier, obtain the ferric carbonate concentrate,
3) resulting ferric carbonate concentrate is further processed, is entered thermal decomposition process,
4) ore after the decomposition enters and adds the ore pulp that the water tank diameter is mixed with suitable concentration,
5) mine tailing after its ore pulp and the ferric carbonate flotation lumps together and carries out hematite reverse flotation, gets final concentrate and true tailings behind the reverse flotation.
Described thermal decomposition process carries out thermal decomposition for utilizing rotary kiln to the ferric carbonate concentrate.
The percentage by weight of described ore pulp suitable concentration is 42-48%.
The technology that processing of the present invention contains the hematite ore of ferric carbonate has following advantage:
1. contain at present the ferric carbonate ore-dressing technique why the main cause of beneficiating technology index difference be: the one, inhibitory action is not strong in the inhibitory action of ferric carbonate organic inhibitor in anion collecting agent flotation system, cause when containing the carbonic acid iron mineral and existing, ferric carbonate can not be suppressed fully and enter concentrate, can not be activated fully and enters foam and become mine tailing.At first isolating ferric carbonate is the effective means that addresses this problem.
2. the theoretical ferrous grade of ferric carbonate is 48.2%, can cause into the stove grade low directly into stove, so carry out heating and decomposition treatment, make ferric carbonate resolve into iron oxide, it is consistent with bloodstone character in the raw ore that the floatability that has changed mineral and inhibition make it, and can reach the develop skill purpose of index of single flotation bloodstone.
3. this technology can effectively reclaim the ferric carbonate that is lost in the mine tailing and the final concentrate grade is improved, simultaneously to similar ore beneficiation offer reference meaning, economic benefit and obvious social benefit.
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, processing of the present invention contains the technology of the hematite ore of ferric carbonate, comprise ore 1 after ore grinding 2 reaches monomer separation, through in, weak, three kinds of concentrate that high intensity magnetic separation does not obtain, its feature comprises the steps:
1) ore is reached monomer separation through ore grinding 1, after grader 2 classifications, the concentrate that 5 magnetic separation of magnetic separator 4-intensity magnetic separator obtain in low intensity magnetic separation machine 3-converges,
2) utilize the concentrate that will converge, roughly select 6 earlier, the back is selected 7, obtains the ferric carbonate concentrate the strong floating agent of the selective collecting ability of ferric carbonate,
3) resulting ferric carbonate concentrate is further processed, is entered thermal decomposition process 8,
4) ore after the decomposition enters and adds the ore pulp that water tank diameter 9 is mixed with suitable concentration,
5) mine tailing after its ore pulp and the ferric carbonate flotation lumps together and carries out hematite reverse flotation 10, gets final concentrate 11 and true tailings 12 behind the reverse flotation.
Described thermal decomposition process carries out thermal decomposition for utilizing rotary kiln to the ferric carbonate concentrate.
The percentage by weight of described ore pulp suitable concentration is 42-48%.
Claims (3)
1, a kind of processing contains the technology of the hematite ore of ferric carbonate, comprise ore after ore grinding reaches monomer separation, and three kinds of concentrate that weak high intensity magnetic separation does not obtain in the warp, its feature comprises the steps:
1) with ore after ore grinding reaches monomer separation, converge through the concentrate that the low intensity magnetic separation machine-middle magnetic separator-the intensity magnetic separator magnetic separation obtains,
2) utilize the concentrate that will converge to the strong floating agent of the selective collecting ability of ferric carbonate, selected after roughly selecting earlier, obtain the ferric carbonate concentrate,
3) resulting ferric carbonate concentrate is further processed, is entered thermal decomposition process,
4) ore after the decomposition enters and adds the ore pulp that the water tank diameter is mixed with suitable concentration,
5) mine tailing after its ore pulp and the ferric carbonate flotation lumps together and carries out hematite reverse flotation, gets final concentrate and true tailings behind the reverse flotation.
2, processing according to claim 1 contains the technology of the hematite ore of ferric carbonate, it is characterized in that described thermal decomposition process carries out thermal decomposition for utilizing rotary kiln to the ferric carbonate concentrate.
3, processing according to claim 1 contains the technology of the hematite ore of ferric carbonate, and the percentage by weight that it is characterized in that described ore pulp suitable concentration is 42-48%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810012400A CN101632957A (en) | 2008-07-22 | 2008-07-22 | Process for processing hematite ore containing iron carbonate |
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| CN200810012400A CN101632957A (en) | 2008-07-22 | 2008-07-22 | Process for processing hematite ore containing iron carbonate |
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| CN101632957A true CN101632957A (en) | 2010-01-27 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102225353A (en) * | 2011-03-15 | 2011-10-26 | 吉林大学 | Method for concentrating iron from weathering iron ore |
| CN102728453A (en) * | 2012-06-17 | 2012-10-17 | 鞍钢集团矿业公司 | New technology for sorting lean hematite and magnetite orecontaining iron carbonate |
| CN102806140A (en) * | 2012-08-16 | 2012-12-05 | 鞍钢集团矿业公司 | Method for recycling hematite combined tailings |
| CN103464273A (en) * | 2013-09-04 | 2013-12-25 | 鞍钢集团矿业公司 | Process for sorting iron-carbonate-containing low-grade iron ore concentrate |
| CN103567058A (en) * | 2013-11-13 | 2014-02-12 | 鞍钢集团矿业公司 | Technique for processing high-iron-carbonate mixed ore |
| CN103861733A (en) * | 2014-03-26 | 2014-06-18 | 东北大学 | Method for preparing super iron concentrates through magnetic separation-reverse flotation technology |
| CN104588203A (en) * | 2015-01-29 | 2015-05-06 | 鞍钢集团矿业公司 | Beneficiation method for refractory iron ores |
| CN104624361A (en) * | 2015-01-29 | 2015-05-20 | 鞍钢集团矿业公司 | Beneficiation method for complex iron ore |
| CN104689903A (en) * | 2015-01-29 | 2015-06-10 | 鞍钢集团矿业公司 | Method for improving iron grade in iron ore direct-flotation tailings |
| CN106269177A (en) * | 2016-10-14 | 2017-01-04 | 鞍钢集团矿业有限公司 | Magnetic strength magnetic reverse floatation process in lean hematite thickness grading, gravity treatment |
| CN110665640A (en) * | 2019-10-15 | 2020-01-10 | 江苏旌凯中科超导高技术有限公司 | Pre-enrichment and concentration process of ultrafine ferrotitanium ore material |
-
2008
- 2008-07-22 CN CN200810012400A patent/CN101632957A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102225353B (en) * | 2011-03-15 | 2013-07-03 | 吉林大学 | Method for concentrating iron from weathering iron ore |
| CN102225353A (en) * | 2011-03-15 | 2011-10-26 | 吉林大学 | Method for concentrating iron from weathering iron ore |
| CN102728453A (en) * | 2012-06-17 | 2012-10-17 | 鞍钢集团矿业公司 | New technology for sorting lean hematite and magnetite orecontaining iron carbonate |
| CN102806140A (en) * | 2012-08-16 | 2012-12-05 | 鞍钢集团矿业公司 | Method for recycling hematite combined tailings |
| CN103464273A (en) * | 2013-09-04 | 2013-12-25 | 鞍钢集团矿业公司 | Process for sorting iron-carbonate-containing low-grade iron ore concentrate |
| CN103464273B (en) * | 2013-09-04 | 2015-03-11 | 鞍钢集团矿业公司 | Process for sorting iron-carbonate-containing low-grade iron ore concentrate |
| CN103567058B (en) * | 2013-11-13 | 2015-05-13 | 鞍钢集团矿业公司 | Technique for processing high-iron-carbonate mixed ore |
| CN103567058A (en) * | 2013-11-13 | 2014-02-12 | 鞍钢集团矿业公司 | Technique for processing high-iron-carbonate mixed ore |
| CN103861733B (en) * | 2014-03-26 | 2016-04-20 | 东北大学 | A kind of magnetic separation-reverse flotation prepares the method for extraction of superpure concentrate of magnetite |
| CN103861733A (en) * | 2014-03-26 | 2014-06-18 | 东北大学 | Method for preparing super iron concentrates through magnetic separation-reverse flotation technology |
| CN104588203A (en) * | 2015-01-29 | 2015-05-06 | 鞍钢集团矿业公司 | Beneficiation method for refractory iron ores |
| CN104624361A (en) * | 2015-01-29 | 2015-05-20 | 鞍钢集团矿业公司 | Beneficiation method for complex iron ore |
| CN104689903A (en) * | 2015-01-29 | 2015-06-10 | 鞍钢集团矿业公司 | Method for improving iron grade in iron ore direct-flotation tailings |
| CN106269177A (en) * | 2016-10-14 | 2017-01-04 | 鞍钢集团矿业有限公司 | Magnetic strength magnetic reverse floatation process in lean hematite thickness grading, gravity treatment |
| CN106269177B (en) * | 2016-10-14 | 2018-04-24 | 鞍钢集团矿业有限公司 | Lean hematite thickness grading, gravity treatment-middle magnetic-strong magnetic-reverse floatation process |
| CN110665640A (en) * | 2019-10-15 | 2020-01-10 | 江苏旌凯中科超导高技术有限公司 | Pre-enrichment and concentration process of ultrafine ferrotitanium ore material |
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Application publication date: 20100127 |