CN102962123A - Beneficiation process for low-grade copper-nickel ore - Google Patents
Beneficiation process for low-grade copper-nickel ore Download PDFInfo
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Abstract
The invention discloses a beneficiation process for low-grade copper-nickel ore. The process comprises the following steps: grinding, wherein sodium hexametaphosphate and sodium carbonate are added in the grinding process; adding sodium carboxymethylcellulose into ore pulp obtained by grinding to carry out pulp mixing and then adding butyl xanthate and a collecting agent Z-200 to carry out flotation to obtain bulk concentrate; adding the sodium hexametaphosphate, sodium carboxymethylcellulose, the butyl xanthate and the collecting agent Z-200 into tailings obtained by flotation to carry out secondary roughing and mixing the obtained product and the bulk concentrate after carrying out closed-loop circulating concentration for twice; and adding lime and activated carbon into the bulk concentrate to carry out roughing separation, then carrying out closed-loop circulating concentration for four times on the obtained product to obtain copper ore concentrate and carrying out closed-loop circulating scavenging for twice on the tailings separated by roughing so as to obtain nickel ore concentrate. Finally, the copper ore concentrate with the copper grade of more than or equal to 25 percent, the nickel content of less than 0.4 percent and the copper recovery rate of over 70 percent, and the nickel ore concentrate with the nickel grade of 5 percent, the copper content of less than 0.4 percent and the nickel recovery rate of 80 percent are obtained.
Description
Technical field
The invention belongs to the preprocessing technical field of ore or waste material, be specifically related to a kind of ore-dressing technique of Low-grade Cu-ni Ore.
Background technology
The industry-by-industries such as the application of nickel has contained from the product for civilian use to the space flight and aviation, guided missile, submarine, atomic reactor are a kind of indispensable important meals.The consumption of current nickel accounts for 65%～70% of aggregate consumption take iron and steel and non-ferrous metal metallurgy already as main; Next is light industry, comprises that the plating of bicycle, medical vessels, daily necessities all needs nickel, and consumption accounts for 12%～15% of aggregate consumption; Be machine-building, chemical industry, oil and power industry again, these industries need to make various machines and container with nickel, and consumption accounts for aggregate consumption 10%～12%.The products such as the rechargeable battery that high-technology field is used, nickel foam, nickel plated steel strip, reactive hydrogen nickel protoxide, demand to nickel is also very vigorous, and China is the fastest country of nickel consumption figure speedup in recent years, and average annual progressive increase rate reaches 25.93%, consumption figure only is lower than Japan, occupies the 2nd in the world.As a whole, the consumption figure of world's nickel is in rising trend, and amplification reaches 4.55%, and wherein stainless steel industry is obvious to the nickel demand growth, and 60～65% Chinese nickel reserves that in recent years account for the nickel consumption figure belong to medium level, and reserves and reserves basis occupy the 9th in the world.But the reserves high concentration that China is verified, Gansu Jinchuan Mining Area reserves and stock number account for 64% of the whole nation.The whole nation is except temporary difficult nickel ore, silicate nickel minerals and the laterite-type nickel ore that utilizes at present, and the domestic big-and-middle-sized nickel sulfide ore of verifying all develops basically, and remaining mainly is some fragmentary little nickel minerals, and volume increase is difficulty relatively.In recent years, some progress of ore deposit was looked in the newly developed area, and at Hami Mount Huang, Eastern Huangshan, periphery, Ka Latongke mining area, Fuyun finds that all new ore body is arranged, and can also not find for the large-scale nickel minerals of building exploitation.
It is reported that along with the rapid growth of China's stainless steel industry, to the also thereupon increase of demand of nickel, China's nickel consumption figure also was sure to occupy the first in the world in continuous 6 years.China is higher to the degree of dependence of nickel ore resource at present, and the risk of whole industry chain increases, and systematic risk is still waiting assessment.Although Chinese stainless steel industry exist such as production capacity serious superfluous, quality is very different, structural adjustment not yet puts in place and backward production facilities are eliminated the problems such as arduous task, estimate " 12 " during still can keep steady growth about 7%.
The existing Mine Cu nickel ores of verifying is reclaimed to greatest extent, can promote company survival and development, concerning the improvement of local expanding economy and ecological environment, be the only way that keeps enterprise, regional cycle development, have important practical significance, be very important.
Summary of the invention
The purpose of this invention is to provide a kind of ore-dressing technique that improves the Low-grade Cu-ni Ore recovery rate in ore-dressing.
The present invention realizes that the technical scheme that above-mentioned purpose adopts is as follows:
A kind of Low-grade Cu-ni Ore ore-dressing technique comprises the steps:
(1) ore grinding: the grind grading effluent concentration is 32～35wt%, adds simultaneously calgon 120～150g/ ton ore and sodium carbonate 1.3～1.6kg/ ton ore;
(2) one roughing: add sodium carboxymethylcellulose 300～350g/ ton ore in the ore pulp that obtains to ore grinding and size mixing, add again butyl xanthate 30～45g/ ton ore and collecting agent Z-200 15～25g/ ton ore carries out flotation, obtain copper nickel bulk concentrate;
(3) secondary is roughly selected: add calgon 35～50g/ ton ore, sodium carboxymethylcellulose 45～65g/ ton ore, butyl xanthate 20～35g/ ton ore and collecting agent Z-200 10～20g/ ton ore to the rougher tailings of step (2) gained and carry out secondary and roughly select, mix with the copper nickel bulk concentrate of step (2) after cull is selected through twice closed cycle again, obtain bulk concentrate;
(4) the copper nickel of bulk concentrate separates: add lime 800～1200g/ ton ore, active carbon 80～110g/ ton ore to the bulk concentrate of step (3) gained and separate and roughly select, obtain copper concentrate after cull is selected through four closed cycles again, mine tailing is scanned through twice closed cycle and is obtained nickel ore concentrate.
Further, after step (3) secondary is roughly selected resulting mine tailing again through roughly selecting after II section and four closed cycles scan the mine tailing that is finally discharged.
Further, when resulting mine tailing was roughly selected the II section after step (3) secondary is roughly selected, by ore per ton, the adding dose was: 60～70g calgon and 10～20g butyl xanthate.
Further, when roughly selecting mine tailing that the II section obtains and carrying out four closed cycles and scan, by ore per ton, scanning for the first time the adding dose is 30～50g calgon, 60～90g sodium carboxymethylcellulose, 20～35g butyl xanthate and 10～20g collecting agent Z-200, scanning for the second time the adding dose is 40～60g sodium carboxymethylcellulose, and scanning for the third time the adding dose is 15～25g calgon, 10～15g butyl xanthate and 5～10g collecting agent Z-200.
Beneficial effect: adopt ore-dressing technique of the present invention, the Low-grade Cu-ni Ore sorting of copper grade≤0.18%, nickel grade≤0.4% can be obtained copper grade 〉=25%, nickeliferous＜0.4%, copper concentrate and nickel grade 〉=5%, cupric＜0.4% of copper recovery more than 70%, nickel recovery reaches 80% nickel ore concentrate, and nickel content below 0.097%, copper content reclaim copper and mickel in the mineral below 0.033% to greatest extent in the mine tailing.
Description of drawings
Fig. 1 is mineral processing circuit schematic diagram of the present invention.
The specific embodiment
Below in conjunction with drawings and Examples the present invention is described in further details.
Low-grade Cu-ni Ore stone of the present invention refers to the copper nickel stone of copper grade≤0.18wt%, nickel grade≤0.4wt%.
As shown in Figure 1, the present invention concrete mineral processing circuit as follows:
1, Low-grade Cu-ni Ore stone is added ore mill, add water and regulate grind grading effluent concentration to 32～35wt%, simultaneously by ore consumption per ton, add 120～150g calgon and 1.3～1.6kg sodium carbonate, carry out ore grinding, until grind grading overflow slurry fineness-200 order reaches 65～70wt%;
2, in above-mentioned ore pulp up to standard, by ore per ton, add 300～350g sodium carboxymethylcellulose and size mixing, add again 30～45g collecting agent butyl xanthate and 15～25g collecting agent Z-200, carry out one roughing, obtain copper nickel bulk concentrate, the mine tailing of gained needs further sorting;
3, the mine tailing of one roughing is again by ore per ton, adding 35～50g calgon, 45～65g sodium carboxymethylcellulose, 20～35g butyl xanthate and 10～20g collecting agent Z-200 carry out secondary and roughly select the I section, obtain copper nickel bulk concentrate after the gained cull is selected through twice closed cycle again, wherein, carry out adding 20～35g calgon and 60～80g sodium carboxymethylcellulose by ore per ton when selected the first time, add 15～25g calgon and 50～70g sodium carboxymethylcellulose by ore per ton when for the second time selected; The gained mine tailing enters step 5 operation;
4, the copper nickel bulk concentrate that one roughing is obtained is with after the copper nickel bulk concentrate of step 3 gained mixes, carrying out copper in ore consumption adding 800～1200g lime per ton and 80～110g active carbon roughly selects, the copper rough concentrate that separation obtains is again through the selected copper concentrate that obtains of four closed cycles, and the copper mine tailing that separation obtains is scanned through twice closed cycle and obtained nickel ore concentrate;
5, step 3 secondary is roughly selected mine tailing that the I section obtains and is added 60～70g calgon and 10～20g butyl xanthate by ore per ton and carry out secondary and roughly select the II section, the cull that obtains enters the selected operation first time in the step 3, the mine tailing that obtains namely becomes final tailing disposal after scanning through four closed cycles again, wherein by ore per ton, scanning for the first time the adding dose is 30～50g calgon, 60～90g sodium carboxymethylcellulose, 20～35g butyl xanthate and 10～20g collecting agent Z-200, scanning for the second time the adding dose is 40～60g sodium carboxymethylcellulose, and scanning for the third time the adding dose is 15～25g calgon, 10～15g butyl xanthate and 5～10g collecting agent Z-200.
Described closed cycle is selected to be that mine tailing with a selected operation is back to last selected operation and selects, and the concentrate of this selected operation is as the charging of next selected operation simultaneously, and according to this circulation is with the concentrate extraction of last one stock runner's order.
It is a cull of scanning operation to be back to the last operation of scanning select that described closed cycle is scanned again, and this mine tailing of scanning operation is scanned the charging of operation as next simultaneously, according to this circulation, the extraction of scanning together the mine tailing of operation at last.
Embodiment 1
Ore adopts the poor copper nickel sample (copper grade 0.16～0.18%, nickel grade 0.36～0.4%) of the sub-nickel minerals of the husky spring of the sky, new Hua Lian, Xinjiang mining industry.Product grade of processing rear each step by above-mentioned technique is as follows:
Through nickel grade 5.508%, copper grade 3.440% in the copper nickel bulk concentrate behind the one roughing, output accounts for the 4.208wt% of ore; Nickel grade 0.209%, copper grade 0.055% in the mine tailing that one roughing obtains, output accounts for the 95.792wt% of ore.
The mine tailing of one roughing is roughly selected after I section and the selected processing of twice closed cycle nickel grade 4.219%, copper grade 1.642% in the resulting copper nickel bulk concentrate through secondary again, and output accounts for the 3.18wt% of ore.
Through copper roughly select with the selected resulting copper concentrate of four closed cycles in nickel grade 0.332%, copper grade 29.207%, output accounts for the 0.468wt% of ore.
The copper mine tailing is scanned nickel grade 4.921% in the resulting nickel ore concentrate, copper grade 0.356% through twice closed cycle, and output accounts for the 6.923wt% of ore.
Secondary is roughly selected mine tailing that the I section obtains and is roughly selected after II section and four closed cycles scan through secondary, makes nickel grade 0.097%, copper grade 0.033% in the mine tailing of final discharging, and output accounts for the 92.609wt% of ore.
Claims (4)
1. a Low-grade Cu-ni Ore ore-dressing technique is characterized in that, comprises the steps:
(1) ore grinding: the grind grading effluent concentration is 32～35wt%, adds simultaneously calgon 120～150g/ ton ore and sodium carbonate 1.3～1.6kg/ ton ore;
(2) one roughing: add sodium carboxymethylcellulose 300～350g/ ton ore in the ore pulp that obtains to ore grinding and size mixing, add again butyl xanthate 30～45g/ ton ore and collecting agent Z-200 15～25g/ ton ore carries out flotation, obtain copper nickel bulk concentrate;
(3) secondary is roughly selected: add calgon 35～50g/ ton ore, sodium carboxymethylcellulose 45～65g/ ton ore, butyl xanthate 20～35g/ ton ore and collecting agent Z-200 10～20g/ ton ore to the rougher tailings of step (2) gained and carry out secondary and roughly select, mix with the copper nickel bulk concentrate of step (2) after cull is selected through twice closed cycle again, obtain bulk concentrate;
(4) the copper nickel of bulk concentrate separates: add lime 800～1200g/ ton ore, active carbon 80～110g/ ton ore to the bulk concentrate of step (3) gained and separate and roughly select, obtain copper concentrate after cull is selected through four closed cycles again, mine tailing is scanned through twice closed cycle and is obtained nickel ore concentrate.
2. Low-grade Cu-ni Ore ore-dressing technique according to claim 1 is characterized in that: resulting mine tailing is again through roughly selecting after II section and four closed cycles scan the mine tailing that is finally discharged after step (3) secondary is roughly selected.
3. Low-grade Cu-ni Ore ore-dressing technique according to claim 2, it is characterized in that: when resulting mine tailing is roughly selected the II section after step (3) secondary is roughly selected, by ore per ton, the adding dose is: 60～70g calgon and 10～20g butyl xanthate.
4. Low-grade Cu-ni Ore ore-dressing technique according to claim 3, it is characterized in that: when roughly selecting mine tailing that the II section obtains and carrying out four closed cycles and scan, by ore per ton, scanning for the first time the adding dose is 30～50g calgon, 60～90g sodium carboxymethylcellulose, 20～35g butyl xanthate and 10～20g collecting agent Z-200, scanning for the second time the adding dose is 40～60g sodium carboxymethylcellulose, and scanning for the third time the adding dose is 15～25g calgon, 10～15g butyl xanthate and 5～10g collecting agent Z-200.
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Cited By (11)
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| CN103386359A (en) * | 2013-07-19 | 2013-11-13 | 广州有色金属研究院 | Beneficiation method for copper oxide cobalt ores |
| CN103495492A (en) * | 2013-10-11 | 2014-01-08 | 金川集团股份有限公司 | Beneficiation method for copper nickel |
| CN103736584A (en) * | 2014-01-20 | 2014-04-23 | 吉林吉恩镍业股份有限公司 | Beneficiation method for high-grade copper-nickel sulphide ore |
| CN103801460A (en) * | 2014-01-26 | 2014-05-21 | 乌鲁木齐金石徽龙矿业有限公司 | Low-grade copper flotation technology |
| CN103801461A (en) * | 2014-01-26 | 2014-05-21 | 乌鲁木齐金石徽龙矿业有限公司 | Low-grade copper-nickel ore flotation technology |
| CN104138807A (en) * | 2014-07-24 | 2014-11-12 | 北京矿冶研究总院 | Beneficiation method for copper-nickel sulfide ore containing layered easy-to-float silicate gangue |
| CN106622636A (en) * | 2016-12-21 | 2017-05-10 | 广西睿桂涵农业有限公司 | Beneficiation process of copper-nickel sulfide ore |
| CN109806982A (en) * | 2019-03-19 | 2019-05-28 | 北京矿冶科技集团有限公司 | A kind of beneficiation method of nickel sulfide ore |
| CN109909071A (en) * | 2019-03-05 | 2019-06-21 | 西部矿业股份有限公司 | A kind of low-grade difficulty of high shale content selects the beneficiation method of copper-nickel sulfide |
| CN114260099A (en) * | 2021-11-17 | 2022-04-01 | 赤峰金通铜业有限公司 | Method for efficiently recovering copper and iron metals in copper smelting slag |
| CN115365013A (en) * | 2022-09-30 | 2022-11-22 | 中南大学 | Combined inhibitor for flotation of copper-nickel sulfide ore and application thereof |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103386359A (en) * | 2013-07-19 | 2013-11-13 | 广州有色金属研究院 | Beneficiation method for copper oxide cobalt ores |
| CN103495492A (en) * | 2013-10-11 | 2014-01-08 | 金川集团股份有限公司 | Beneficiation method for copper nickel |
| CN103736584B (en) * | 2014-01-20 | 2015-10-28 | 吉林吉恩镍业股份有限公司 | A kind of beneficiation method of high-grade copper-nickel sulphide ore |
| CN103736584A (en) * | 2014-01-20 | 2014-04-23 | 吉林吉恩镍业股份有限公司 | Beneficiation method for high-grade copper-nickel sulphide ore |
| CN103801460A (en) * | 2014-01-26 | 2014-05-21 | 乌鲁木齐金石徽龙矿业有限公司 | Low-grade copper flotation technology |
| CN103801461A (en) * | 2014-01-26 | 2014-05-21 | 乌鲁木齐金石徽龙矿业有限公司 | Low-grade copper-nickel ore flotation technology |
| CN103801460B (en) * | 2014-01-26 | 2017-01-25 | 乌鲁木齐金石徽龙矿业有限公司 | Low-grade copper flotation technology |
| CN104138807A (en) * | 2014-07-24 | 2014-11-12 | 北京矿冶研究总院 | Beneficiation method for copper-nickel sulfide ore containing layered easy-to-float silicate gangue |
| CN106622636A (en) * | 2016-12-21 | 2017-05-10 | 广西睿桂涵农业有限公司 | Beneficiation process of copper-nickel sulfide ore |
| CN106622636B (en) * | 2016-12-21 | 2019-05-14 | 广西睿桂涵农业有限公司 | A kind of ore-dressing technique of copper nickel sulfide mineral |
| CN109909071A (en) * | 2019-03-05 | 2019-06-21 | 西部矿业股份有限公司 | A kind of low-grade difficulty of high shale content selects the beneficiation method of copper-nickel sulfide |
| CN109806982A (en) * | 2019-03-19 | 2019-05-28 | 北京矿冶科技集团有限公司 | A kind of beneficiation method of nickel sulfide ore |
| CN109806982B (en) * | 2019-03-19 | 2021-04-20 | 北京矿冶科技集团有限公司 | Beneficiation method for nickel sulfide ore |
| CN114260099A (en) * | 2021-11-17 | 2022-04-01 | 赤峰金通铜业有限公司 | Method for efficiently recovering copper and iron metals in copper smelting slag |
| CN115365013A (en) * | 2022-09-30 | 2022-11-22 | 中南大学 | Combined inhibitor for flotation of copper-nickel sulfide ore and application thereof |
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