CN102962123B - Beneficiation process for low-grade copper-nickel ore - Google Patents

Beneficiation process for low-grade copper-nickel ore Download PDF

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Publication number
CN102962123B
CN102962123B CN201210511519.7A CN201210511519A CN102962123B CN 102962123 B CN102962123 B CN 102962123B CN 201210511519 A CN201210511519 A CN 201210511519A CN 102962123 B CN102962123 B CN 102962123B
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China
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ore
nickel
grade
ton
copper
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CN201210511519.7A
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Chinese (zh)
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CN102962123A (en
Inventor
李路明
江建贤
王莉
陈吉平
王润生
郑东
马永森
王军
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新疆新华联天宇矿业有限责任公司
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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

A kind of ore-dressing technique of Low-grade Cu-ni Ore
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 space flight and aviation, guided missile, submarine, atomic reactor are a kind of indispensable important meals.The consumption of current nickel, taking iron and steel and non-ferrous metal metallurgy industry as main, accounts for 65%~70% of aggregate consumption; 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 be manufactured various machines and container with nickel, and consumption accounts for aggregate consumption 10%~12%.The products such as the rechargeable battery of high-technology field application, nickel foam, nickel plated steel strip, reactive hydrogen nickel protoxide, also very vigorous to the demand of nickel, 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 lower than Japan, occupies the 2nd, 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 nickel demand growth, and 60~65% Chinese nickel reserves that in recent years account for nickel consumption figure belong to medium level, and reserves and reserves basis occupy the 9th, the world.But the reserves high concentration that China is verified, Jinchuan Mining Area, Gansu 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 utilizing at present, and the domestic big-and-middle-sized nickel sulfide ore of verifying all develops substantially, and remaining is mainly some fragmentary little nickel minerals, increases production more difficult.In recent years, some progress of ore deposit was looked in new district, and at Hami Mount Huang, Eastern Huangshan, periphery, Ka Latongke mining area, Fuyun all finds that there is new ore body, can also not find for the large-scale nickel minerals of building exploitation.
It is reported, along with the rapid growth of China's stainless steel industry, the demand of nickel is also increased thereupon, China's nickel consumption figure is also sure to occupy the first in the world for 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 need 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 " still can keep during this time the steady growth of 7% left and right.
The existing Mine Cu nickel ores of verifying is reclaimed to greatest extent, can promote company survival and development, be related to 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 object of this invention is to provide a kind of ore-dressing technique that improves Low-grade Cu-ni Ore recovery rate in ore-dressing.
It is as follows that the present invention realizes the technical scheme that above-mentioned purpose adopts:
A kind of Low-grade Cu-ni Ore ore-dressing technique, comprises the steps:
(1) ore grinding: grind grading effluent concentration is 32~35wt% adds calgon 120~150g/ ton ore and sodium carbonate 1.3~1.6kg/ ton ore simultaneously;
(2) one roughing: add sodium carboxymethylcellulose 300~350g/ ton ore to size mixing in the ore pulp obtaining to ore grinding, then add butyl xanthate 30~45g/ ton ore and collecting agent Z-200 15~25g/ ton ore to carry 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 carry out secondary to the rougher tailings of step (2) gained and roughly select, cull mixes with the copper nickel bulk concentrate of step (2) after twice closed cycle is selected again, obtains bulk concentrate;
(4) the copper nickel of bulk concentrate separates: add lime 800~1200g/ ton ore, active carbon 80~110g/ ton ore to separate and roughly select to the bulk concentrate of step (3) gained, cull obtains copper concentrate again after four closed cycles are selected, and mine tailing is scanned and obtained nickel ore concentrate through twice closed cycle again.
Further, the mine tailing obtaining after step (3) secondary is roughly selected through roughly selecting after II section and four closed cycles scan, obtains the mine tailing of final discharge again.
Further, when the mine tailing obtaining after step (3) secondary is roughly selected is roughly selected II section, by ore per ton, add dose to be: 60~70g calgon and 10~20g butyl xanthate.
Further, when roughly selecting mine tailing that II section obtains and carrying out four closed cycles and scan, by ore per ton, scan for the first time that to add dose be 30~50g calgon, 60~90g sodium carboxymethylcellulose, 20~35g butyl xanthate and 10~20g collecting agent Z-200, scan for the second time that to add dose be 40~60g sodium carboxymethylcellulose, scan for the third time that to add dose be 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 to copper grade >=25%, nickeliferous < 0.4%, more than 70% copper concentrate of copper recovery and nickel grade >=5%, cupric < 0.4%, nickel recovery reaches 80% nickel ore concentrate, and in mine tailing, nickel content below 0.097%, copper content, below 0.033%, reclaim copper and mickel in mineral to greatest extent.
Brief description of the drawings
Fig. 1 is mineral processing circuit schematic diagram of the present invention.
Detailed description of the invention
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 to 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 to 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, add 35~50g calgon, 45~65g sodium carboxymethylcellulose, 20~35g butyl xanthate and 10~20g collecting agent Z-200 to carry out secondary and roughly select I section, gained cull obtains copper nickel bulk concentrate again after twice closed cycle is selected, wherein, carry out when selected for the first time adding 20~35g calgon and 60~80g sodium carboxymethylcellulose by ore per ton, when selected for the second time, add 15~25g calgon and 50~70g sodium carboxymethylcellulose by ore per ton; Gained mine tailing enters step 5 operation;
4, after copper nickel bulk concentrate one roughing being obtained mixes with the copper nickel bulk concentrate of step 3 gained, adding 800~1200g lime and 80~110g active carbon to carry out copper in ore consumption per ton roughly selects, the copper rough concentrate that separation obtains, again through the selected copper concentrate that obtains of four closed cycles, separates the copper mine tailing obtaining and scans and obtain nickel ore concentrate through twice closed cycle;
5, step 3 is roughly selected mine tailing that I section obtains for two times and is added 60~70g calgon and 10~20g butyl xanthate to carry out secondary by ore per ton to roughly select II section, the cull obtaining enters the selected operation for the first time in step 3, the mine tailing obtaining becomes final tailing disposal again after four closed cycles are scanned, wherein by ore per ton, scan for the first time that to add dose be 30~50g calgon, 60~90g sodium carboxymethylcellulose, 20~35g butyl xanthate and 10~20g collecting agent Z-200, scan for the second time that to add dose be 40~60g sodium carboxymethylcellulose, scan for the third time that to add dose be 15~25g calgon, 10~15g butyl xanthate and 5~10g collecting agent Z-200.
Described closed cycle is selected is the mine tailing of a selected operation to be back to last selected operation select again, and the concentrate of this selected operation is as the charging of next selected operation simultaneously, and circulation according to this, by 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 the charging that this mine tailing of scanning operation is scanned operation as next simultaneously, circulates according to this, the extraction of finally scanning together the mine tailing of operation.
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 New Hualian sky, Xinjiang mining industry.After processing by above-mentioned technique, the product grade of each step is as follows:
Nickel grade 5.508%, copper grade 3.440% in copper nickel bulk concentrate after 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.
Nickel grade 4.219%, copper grade 1.642% in the copper nickel bulk concentrate that the mine tailing of one roughing obtains after secondary is roughly selected I section and the selected processing of twice closed cycle again, output accounts for the 3.18wt% of ore.
Through copper roughly select with selected the obtained copper concentrate of four closed cycles in nickel grade 0.332%, copper grade 29.207%, output accounts for the 0.468wt% of ore.
Copper mine tailing is scanned nickel grade 4.921% in obtained 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 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 discharge, 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, described Low-grade Cu-ni Ore is the copper nickel stone of copper grade≤0.18%, nickel grade≤0.4%, comprises the steps:
(1) ore grinding: grind grading effluent concentration is 32~35wt% adds calgon 120~150g/ ton ore and sodium carbonate 1.3~1.6kg/ ton ore simultaneously;
(2) one roughing: add sodium carboxymethylcellulose 300~350g/ ton ore to size mixing in the ore pulp obtaining to ore grinding, then add butyl xanthate 30~45g/ ton ore and collecting agent Z-200 15~25g/ ton ore to carry 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 carry out secondary to the rougher tailings of step (2) gained and roughly select, cull mixes with the copper nickel bulk concentrate of step (2) after twice closed cycle is selected again, obtains bulk concentrate;
(4) the copper nickel of bulk concentrate separates: add lime 800~1200g/ ton ore, active carbon 80~110g/ ton ore to separate and roughly select to the bulk concentrate of step (3) gained, cull obtains copper concentrate again after four closed cycles are selected, and mine tailing is scanned and obtained nickel ore concentrate through twice closed cycle again.
2. Low-grade Cu-ni Ore ore-dressing technique according to claim 1, is characterized in that: the mine tailing obtaining after step (3) secondary is roughly selected through roughly selecting after II section and four closed cycles scan, obtains the mine tailing of final discharge again.
3. Low-grade Cu-ni Ore ore-dressing technique according to claim 2, it is characterized in that: when the mine tailing obtaining after step (3) secondary is roughly selected is roughly selected II section, by ore per ton, add dose to be: 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 II section obtains and carrying out four closed cycles and scan, by ore per ton, scan for the first time that to add dose be 30~50g calgon, 60~90g sodium carboxymethylcellulose, 20~35g butyl xanthate and 10~20g collecting agent Z-200, scan for the second time that to add dose be 40~60g sodium carboxymethylcellulose, scan for the third time that to add dose be 15~25g calgon, 10~15g butyl xanthate and 5~10g collecting agent Z-200.
CN201210511519.7A 2012-12-04 2012-12-04 Beneficiation process for low-grade copper-nickel ore CN102962123B (en)

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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
CN103495492B (en) * 2013-10-11 2015-02-18 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
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
CN103801461B (en) * 2014-01-26 2017-01-25 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 silicate gangue easy to float
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
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

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