CN103521349A - Comprehensive-utilization mineral separation process for ultra-lean magnetite - Google Patents
Comprehensive-utilization mineral separation process for ultra-lean magnetite Download PDFInfo
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Abstract
The invention relates to the technical field of ultra-lean magnetite mineral separation and particularly relates to a comprehensive-utilization mineral separation process for ultra-lean magnetite. The comprehensive-utilization mineral separation process is used for solving the problems that the ultra-lean magnetite is mainly subjected to magnetic iron recycling from the magnetite currently, and the contradiction of the unity of opposites, such as technology, cost and quality, exists in the recycling of useful elements, such as phosphorus, titanium and the like, from the magnetite. Some phosphorus separation technologies are carried out in magnetic separation tailings, thus the impurity content of phosphorus concentrate is high, and the quality of products is hard to guarantee. Aiming at ultra-lean magnetite ore with the P2O5 content of 2.44%, the TFe content of 13.58% and the TiO2 content of 2.02%, the process comprises the steps of firstly carrying out phosphorus flotation, then carrying out iron magnetic separation on phosphorus flotation tailings and finally recovering titanium from iron separation tailings through re-separation. According to the process, on the premise that the quality of products is qualified, useful elements are recovered to the maximum, and the ultra-lean magnetite is subjected to comprehensive development and utilization.
Description
Technical field
The present invention relates to ultra-poor magnetite separation technical field, specifically a kind of ultra-poor magnetic iron ore comprehensive utilization ore-dressing technique.
Background technology
Current ultra-poor magnetic iron ore is mainly recycled Armco magnetic iron wherein, and the useful elements such as phosphorus wherein, titanium are recycled the unity of opposites contradiction that exists technology, cost, quality.Some selects phosphorus technology is to carry out in magnetic tailing, causes phosphorus concentrate impurity content high, is difficult to guarantee product quality.
Summary of the invention
The object of this invention is to provide a kind of ultra-poor magnetic iron ore comprehensive utilization ore-dressing technique, to solve, the recovery rate in ore-dressing existing in phosphorus in ultra-poor magnetic iron ore, iron, titanium elements ore dressing process is low, cost is high, the underproof problem of product quality.
The present invention is directed to content P
2o
5be 2.44%, TFe is 13.58% and TiO
2it is 2.02% ultra-poor magnetite ore; Its technical scheme is: by first flotation phosphate, to selecting phosphorus mine tailing magnetic separation iron again, finally to iron selection tailings, utilize gravity treatment to reclaim titanium.
Further, concrete technology is as follows:
A, by ultra-poor magnetite ore, adopt ball mill ore grinding, be milled to fineness and account for 58.5% fine ore and make ore pulp for-200 orders;
B, selection adjusting agent are sodium carbonate, consumption 2kg/t; Inhibitor is waterglass and CMC, waterglass consumption 1kg/t and CMC consumption 200g/t; Collecting agent is Oxidized paraffin wax, consumption 500g/t; Divide a rough floatation and three cleaner flotations, flotation pulp temperature is 30～35 ℃; During cleaner flotation, add CMC50g/t, waterglass 250g/t in flotation pulp for the first time, every grade of flotation tail washings slurry returns to upper level porch again; After cleaner flotation, obtain for the third time phosphorus concentrate;
C, adopt drum-type magnetic separator, to scanning mine tailing (mog accounts for 58.5% for-200 orders), first carry out weak magnetic roughly select, after carry out a little less than magnetic selected; It is 119.5kA/m that weak magnetic is roughly selected magnetic field intensity, and the selected magnetic field intensity of weak magnetic is 91.5 kA/m; After weak magnetic is selected, obtain iron ore concentrate;
D, magnetic tailing is carried out to a gravity treatment again, a low intensity magnetic separation, one time high intensity magnetic separation obtains ilmenite concentrate.
The present invention has adopted " first floating rear magnetic " beneficiation flowsheet, is exactly that phosphorus concentrate is reclaimed in first flotation, and floating phosphorus mine tailing then magnetic separation reclaims magnetic iron ore, then carries out a gravity treatment, a low intensity magnetic separation, and one time high intensity magnetic separation obtains ilmenite concentrate.
Change ore-dressing technique and adopt magnetic technological process after " one thick three single-mindedly sweeps operation and selects phosphorus--iron is selected in floating phosphorus mine tailing magnetic separation " first floating.Product indices is all good than floating flow process after the first magnetic of other ore-dressing techniques, and in the iron ore concentrate obtaining harmful element phosphorus, sulphur than first magnetic after floating ore-dressing technique low.
Cost and benefit estimation: processing and selecting iron cost in ore per ton is 21.87 yuan/ton, and selecting phosphorus cost is 21.63 yuan/ton, 43.5 yuan/ton of the costs of total processing ore per ton.By the comprehensive recovery process result of ore dressing, calculate, the productive rate of phosphorus concentrate is 6.62%, by current P
2o
5approximately 480 yuan/ton of the phosphorus concentrate prices of grade 34-35% grade, the output value of one ton of ore phosphorus of every processing is 31.78 yuan/ton; The productive rate of iron ore concentrate is 10.69%, approximately 600 yuan/ton of iron ore concentrate prices, and the output value of one ton of ore iron of every processing is 64.14 yuan/ton; Amount to and process 95.92 yuan/ton of one ton of ore output values, ton profit is 52.42 yuan.
Advantage of the present invention is by P
2o
5, TFe, TiO
2content is respectively 2.44%, 13.58% and 2.02% ultra-poor magnetite ore, and the improvement through ore-dressing technique, adopts ore grinding one time, reduced beneficiation cost, under the prerequisite of qualified product, useful element is reclaimed to greatest extent, makes ultra-poor magnetic iron ore obtain comprehensive development and utilization.
Accompanying drawing explanation
Fig. 1 is process chart of the present invention.
The specific embodiment
The present invention be directed to P
2o
5, TFe, TiO
2content is respectively the proposition of 2.44%, 13.58% and 2.02% ultra-poor magnetite ore.
1, by above-mentioned ore, adopt XMQ-67 type 240 * 90 conical ball mill ore grindings, mog accounts for 58.5% fine ore and makes ore pulp for-200 orders;
2, selecting adjusting agent is sodium carbonate, consumption 2kg/t; Inhibitor is waterglass and CMC, waterglass consumption 1kg/t and CMC consumption 200g/t; Collecting agent is Oxidized paraffin wax, consumption 500g/t; Divide a rough floatation and three cleaner flotations, flotation pulp temperature is 30～35 ℃; During cleaner flotation, add CMC50g/t, waterglass 250g/t in flotation pulp for the first time, every grade of flotation tail washings slurry returns to upper level porch again; After cleaner flotation, obtain for the third time phosphorus concentrate.
3, adopt drum-type magnetic separator, to scanning mine tailing (mog accounts for 58.5% for-200 orders), first carry out weak magnetic roughly select, after carry out a little less than magnetic selected; It is 119.5kA/m that weak magnetic is roughly selected magnetic field intensity, and the selected magnetic field intensity of weak magnetic is 91.5 kA/m; After weak magnetic is selected, obtain iron ore concentrate.
4, magnetic tailing is carried out to a gravity treatment again, a low intensity magnetic separation, one time high intensity magnetic separation obtains ilmenite concentrate.
Obviously, the above embodiment of the present invention is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here cannot give all embodiments exhaustive.Every still row in protection scope of the present invention of apparent variation that technical scheme of the present invention extends out or change that belong to.
Claims (2)
1. ultra-poor magnetic iron ore fully utilizes an ore-dressing technique, for content P
2o
5be 2.44%, TFe is 13.58% and TiO
2it is 2.02% ultra-poor magnetite ore; It is characterized in that: by first flotation phosphate, to selecting phosphorus mine tailing magnetic separation iron again, finally to iron selection tailings, utilize gravity treatment to reclaim titanium.
2. a kind of ultra-poor magnetic iron ore fully utilizes ore-dressing technique according to claim 1, it is characterized in that:
Concrete technology is as follows:
A, by ultra-poor magnetite ore, adopt ball mill ore grinding, be milled to fineness and account for 58.5% fine ore and make ore pulp for-200 orders;
B, selection adjusting agent are sodium carbonate, consumption 2kg/t; Inhibitor is waterglass and CMC, waterglass consumption 1kg/t and CMC consumption 200g/t; Collecting agent is Oxidized paraffin wax, consumption 500g/t; Divide a rough floatation and three cleaner flotations, flotation pulp temperature is 30～35 ℃; During cleaner flotation, add CMC50g/t, waterglass 250g/t in flotation pulp for the first time, every grade of flotation tail washings slurry returns to upper level porch again; After cleaner flotation, obtain for the third time phosphorus concentrate;
C, adopt drum-type magnetic separator, to scan mine tailing first carry out weak magnetic roughly select, after to carry out weak magnetic selected; It is 119.5kA/m that weak magnetic is roughly selected magnetic field intensity, and the selected magnetic field intensity of weak magnetic is 91.5 kA/m; After weak magnetic is selected, obtain iron ore concentrate;
D, magnetic tailing is carried out to a gravity treatment again, a low intensity magnetic separation, one time high intensity magnetic separation obtains ilmenite concentrate.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104209174A (en) * | 2014-08-13 | 2014-12-17 | 铜陵有色金属集团股份有限公司 | Multifunctional grinding and floating production line |
| CN104258963A (en) * | 2014-09-15 | 2015-01-07 | 中冶北方（大连）工程技术有限公司 | Sorting technology for iron ore containing copper, cobalt and magnetite |
| CN108970799A (en) * | 2018-08-06 | 2018-12-11 | 中国恩菲工程技术有限公司 | The system for handling Ultra-low-grade magnetite |
| CN109225602A (en) * | 2018-08-06 | 2019-01-18 | 中国恩菲工程技术有限公司 | The method for handling Ultra-low-grade magnetite |
| CN109967221A (en) * | 2019-03-29 | 2019-07-05 | 中冶北方（大连）工程技术有限公司 | Two Product Process of apatite vanadium titano-magnetite |
| CN109967224A (en) * | 2019-03-29 | 2019-07-05 | 中冶北方（大连）工程技术有限公司 | Miscellaneous ore-dressing technique drops in apatite vanadium titano-magnetite |
| CN110935560A (en) * | 2019-10-22 | 2020-03-31 | 中国地质科学院矿产综合利用研究所 | Beneficiation method for recovering phosphorus from vanadium titano-magnetite tailings with extremely low phosphorus content |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104209174A (en) * | 2014-08-13 | 2014-12-17 | 铜陵有色金属集团股份有限公司 | Multifunctional grinding and floating production line |
| CN104258963A (en) * | 2014-09-15 | 2015-01-07 | 中冶北方（大连）工程技术有限公司 | Sorting technology for iron ore containing copper, cobalt and magnetite |
| CN108970799A (en) * | 2018-08-06 | 2018-12-11 | 中国恩菲工程技术有限公司 | The system for handling Ultra-low-grade magnetite |
| CN109225602A (en) * | 2018-08-06 | 2019-01-18 | 中国恩菲工程技术有限公司 | The method for handling Ultra-low-grade magnetite |
| CN109225602B (en) * | 2018-08-06 | 2020-11-24 | 中国恩菲工程技术有限公司 | Method for treating ultra-lean magnetite |
| CN109967221A (en) * | 2019-03-29 | 2019-07-05 | 中冶北方（大连）工程技术有限公司 | Two Product Process of apatite vanadium titano-magnetite |
| CN109967224A (en) * | 2019-03-29 | 2019-07-05 | 中冶北方（大连）工程技术有限公司 | Miscellaneous ore-dressing technique drops in apatite vanadium titano-magnetite |
| CN109967221B (en) * | 2019-03-29 | 2020-10-02 | 中冶北方（大连）工程技术有限公司 | Process for producing apatite vanadium titano-magnetite |
| CN109967224B (en) * | 2019-03-29 | 2021-04-16 | 中冶北方（大连）工程技术有限公司 | Impurity-reducing mineral separation process for apatite vanadium titano-magnetite |
| CN110935560A (en) * | 2019-10-22 | 2020-03-31 | 中国地质科学院矿产综合利用研究所 | Beneficiation method for recovering phosphorus from vanadium titano-magnetite tailings with extremely low phosphorus content |
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