CN105435954B - A kind of method for improving the copper nickel sulfide mineral flotation chats cupro-nickel rate of recovery - Google Patents
A kind of method for improving the copper nickel sulfide mineral flotation chats cupro-nickel rate of recovery Download PDFInfo
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Abstract
The invention discloses a kind of method for improving the copper nickel sulfide mineral flotation chats cupro-nickel rate of recovery, can solve that copper nickel sulfide mineral flotation middling cycle amount is big, the poor technological difficulties for being difficult to reclaim of floatability, the adverse effect containing magnesium silicate to copper nickel sulfide mineral flotation can be also reduced simultaneously, reduce the content of magnesia in concentrate, inhibitor dosage is reduced, improves the cupro-nickel rate of recovery；In copper nickel sulfide mineral floatation process, addition acid is at normal temperatures and pressures to copper nickel sulfide mineral chats（Scavenger concentrate and cleaner tailings）Selective acidleach de-magging processing is carried out, so as to reduce the adverse effect of the internal circulating load, reduction of difficult floating chats containing magnesium silicate to copper nickel sulfide mineral flotation；Flotation is carried out to phase analysis again after the completion of leaching and improves the cupro-nickel rate of recovery, the froth pulp of flotation twice is incorporated as low-grade concentrate；Present invention process is reasonable, and flow is simple, is easy to industrializing implementation.
Description
Technical field
The present invention relates to a kind of method for improving the copper nickel sulfide mineral flotation chats cupro-nickel rate of recovery, silicon containing magnesium is particularly reduced
Hydrochlorate adversely affects the method for improving the cupro-nickel rate of recovery to copper nickel sulfide mineral flotation, can be reduced containing magnesium silicate with this method
Adverse effect and difficult floating circulation of the chats in flotation flowsheet to cu-ni sulphide ore flotation, reduce containing for magnesia in concentrate
Amount, improve the cupro-nickel rate of recovery.
Background technology
China's copper nickel sulfide mineral aboundresources, but most copper nickel sulfide minerals have the characteristics of high magnesium iron, its main arteries and veins
Stone ore thing is serpentine, the tremolite, chlorite and talcum etc. containing silicate mineral high MgO.In the flotation of copper nickel sulfide mineral
Cheng Zhong, because of the lotus positive electricity of mineral surfaces containing magnesium silicate, heteromophism coacervation easily occurs with electronegative copper-nickel sulfide mineral, dislikes
Change the floatation process of copper nickel sulfide mineral, cause the rise of content of MgO in concentrate.
Further, since the embedding cloth relation of valuable mineral is complicated in copper nickel sulfide mineral, to improve the degree of dissociation of target minreal, production
Sorting for copper nickel sulfide mineral uses multistage grinding, multistage flotation flowsheet more in practice, also therefore produces substantial amounts of micro-size fraction
Following characteristics be present in the floating chats of hardly possible, the recovery of copper nickel sulfide mineral flotation chats：（1）Cupro-nickel mineral are mostly lean intergrowth in chats,
Embedding cloth relation is complicated, disseminated grain size is thin；（2）Chats clay content is big, ore grain size is fine；（3）Alteration is serious, serpentine, dodges thoroughly
The contents containing magnesium silicate such as stone are high, and content of MgO is generally up to more than 18%.In current most of copper nickel sulfide mineral floatation process stream
Cheng Zhong, all it is that the difficult floating chats in this part is back in upper level flotation operation step by step, but this mode not only increases snake
Stone and difficult floating circulation of the chats in flotation flowsheet, influence the flotation of cupro-nickel mineral, reduce the recovery rate in ore-dressing of cupro-nickel, hold simultaneously
Easily cause the rise of content of MgO in concentrate.Therefore, how to find a kind of method effectively and reasonably handle well this part it is difficult floating in
Ore deposit, and adverse effect of the serpentine to floatation process is reduced, there is important practical significance.
To reduce the content containing magnesium silicate to MgO in the adverse effect and copper-nickel concentrate of copper nickel flotation such as serpentine,
It is more at present to reach this purpose by adding substantial amounts of floatation regulator.Main regulator is divided into sludge dispersant and containing magnesium
The inhibitor of silicate, such as carboxymethyl cellulose（CMC）, sodium carbonate, sodium metasilicate and calgon etc..But inhibitor is a large amount of
Use, inhibitory action easily is produced to copper nickel thing, influences the recovery of nickel and copper, while make tailing filtration sedimentation difficult.Therefore,
How while the cupro-nickel rate of recovery is not influenceed, serpentine etc. is reduced containing magnesium silicate to the adverse effect of flotation and reduction concentrate
Middle MgO content is always a problem of cu-ni sulphide ore ore dressing.Liu Yu is strong et al. by adding the concentrated sulfuric acid in nickel ore concentrate, makes
The concentrated sulfuric acid and the oxidation reactive magnesium in concentrate, produce magnesium sulfate, are carrying out separation of solid and liquid, are being stranded in it in sulfuric acid solution and same
Concentrate separates, but due in concentrate ambrose alloy content it is higher, and sulfuric acid concentration is higher used in this method, easily causes in concentrate
Nickel and copper dissolution loss（Number of patent application 201210526480.6）.Feng Qiming et al. using ultrasonic wave produce supersonic jet and
Cavitation is to raw ore slurry or adds the ore pulp after collecting agent to carry out ultrasonic pretreatment, exists so as to reduce serpentine etc. containing magnesium silicate
The absorption on nickel sulfide mineral surface is covered with cover, and then reduces the content of magnesia in concentrate, though this method can reduce nickel and copper
Loss, reduces the content of MgO in concentrate, but is difficult to industrial applications（Number of patent application 201310268992.1）.Zhang Guofan etc.
People according to surface potential containing magnesium silicate it is high the characteristics of, have developed a kind of organic assembling inhibitor EP, produced after being dissolved in water by EP
Raw substantial amounts of-OH and-COOH, substantially reduces the positive potential on the surface containing magnesium silicate, prevents from containing magnesium silicate and cupro-nickel mineral
" heterocoagulation " phenomenon is formed between particle and hinders the progress of flotation, strengthens the suppression to the gangue mineral containing magnesium silicate, but should
Method inhibitor dosage is larger, easily produces inhibitory action to part copper nickel mineral and intergrowth particle, influences the recovery of ambrose alloy
（The such as Zhang Guofan mineral products are protected and utilized, 1999, (3):28-31）.
The present invention according to the physical property feature containing magnesium silicate such as the enrichment discipline of cupro-nickel in copper nickel sulfide mineral and serpentine,
The flotation chats of high serpentine content is individually handled, rather than returns it to upper level flotation operation, reduces serpentine
Circulated Deng containing magnesium silicate in flotation flowsheet.Meanwhile flotation chats is carried out at selective acidleach de-magging at normal temperatures and pressures
Reason, while ensureing that copper and mickel loss late is relatively low, the content of magnesia in concentrate is can obviously reduce, that improves cupro-nickel sorts finger
Mark.
The content of the invention
It is an object of the invention to provide a kind of method for improving the copper nickel sulfide mineral flotation chats cupro-nickel rate of recovery, according to vulcanization
The enrichment discipline of copper and mickel and the physical property feature containing magnesium silicate in copper nickel floatation process, using a certain amount of acid in normal temperature
Selective acidleach de-magging is carried out to chats under normal pressure to handle, then flotation is carried out to chats, rather than return it to upper level and float
It is elected to be industry；This method reduce serpentine etc. to the adverse effect of floatation process and reduces it in flotation flowsheet containing magnesium silicate
In circulation, improve the recovery rate in ore-dressing of cupro-nickel.
The present invention is realized by following technical scheme：
（1）After copper nickel sulfide mineral ore grinding, carry out conventional roughing, scan and selected, selected and during scanning, selected tail
Ore deposit and scavenger concentrate are not back to the selected operation of upper level or scan operation, obtain copper nickel sulfide mineral high-grade concentrate, chats and
Mine tailing；
（2）Chats is carried out at selective acidleach de-magging using the hydrochloric acid of the concentrated sulfuric acid or mass percent concentration 15 ~ 25%
Reason, extraction temperature is normal temperature, and extraction time is 1 ~ 1.5h, and separation of solid and liquid is carried out after the completion of leaching, and filtrate, which returns, leaches, and phase analysis is entered
Row flotation；
（3）By step（2）It is 25 ~ 30% that gained phase analysis, which adds water to size mixing to ore pulp mass percent concentration,；
（4）To step（3）Gained ore pulp carries out flotation, and flotation operation is divided into twice, and first time flotation addition collecting agent 80 ~
120g/t and 40 ~ 60g/t of foaming agent are sized mixing, and flotation are carried out after the completion of sizing mixing, the froth pulp of flotation is as low-grade essence
Ore deposit, product carries out second of flotation in groove, same in floatation process to add 20 ~ 30g/t of 40 ~ 60g/t of collecting agent and foaming agent, the
The froth pulp of secondary flotation merges with the froth pulp of first time flotation collectively as low-grade concentrate, the groove of second of flotation
Interior product is as tailing waste.
The chats is scavenger concentrate and cleaner tailings.
The hydrochloric acid dosage of the concentrated sulfuric acid or mass percent concentration 15 ~ 25% is 8 ~ 15 kg/t, and the concentrated sulfuric acid is production purchased in market
Product.
The collecting agent is ethyl xanthate or/and butyl xanthate.
The foaming agent is J-622.
The advantages of present invention exists compared with known technology：
1st, the present invention after copper nickel sulfide mineral ore grinding, carries out conventional roughing, concentrate and swept just for copper nickel sulfide mineral
Choosing, cleaner tailings and scavenger concentrate（Flotation chats）Upper level flotation operation is not back to, reduces difficult floating chats and silicon containing magnesium
Circulation of the hydrochlorate in flotation flowsheet；
2nd, only carry out selective acidleach de-magging to flotation chats to handle, treating capacity is less, and cost is lower, while reduces essence
MgO content in ore deposit；
3rd, sour dosage is only 8 ~ 15kg/t in leaching process, and extraction temperature is normal temperature, reduces cupro-nickel in leaching process
Loss；
4th, handled by carrying out selective acidleach de-magging to flotation chats, reduce the use of inhibitor, improve flotation
Operating environment, improve the rate of recovery of main metallic nickel and copper；
5th, this method technological process is reasonable, and flowage structure is simple, is easy to industrializing implementation.
Brief description of the drawings
Fig. 1 is the process flow diagram of the present invention；
Fig. 2 is conventional process flow schematic diagram.
Embodiment
The method of the present invention is described in further detail with reference to the accompanying drawings and examples, but the scope of the present invention is not
It is confined to the content.
Embodiment 1：Ore sample is the copper nickel sulfide mineral in Gansu Jinchuan mining area, and raw ore contains Ni 1.64%, Cu 0.78%,
MgO 21%, main gangue mineral are serpentine, talcum and olivine.
Copper nickel sulfide mineral accounts for 85.3% according to flow shown in Fig. 1 through muck ore grinding to fineness -0.074mm, adds water to size mixing to ore deposit
It is 33% to starch mass percent concentration, then adds inhibitor sodium metasilicate 1200g/t, collecting agent butyl xanthate 120g/t and foaming
Agent J-622 60g/t, which are stirred, to be sized mixing, and conventional roughing, selected and scan, product in selected groove is carried out after the completion of sizing mixing
It is not back to upper level roughing, selected or scan operation with the froth pulp scanned, obtains high-grade nickel concentrate, chats and tail
Ore deposit；
Concentrated sulfuric acid 10kg/t is added after chats is merged and carries out selective acidleach de-magging, extraction time 1h, leaches and completes
After be filtrated to get filtrate and phase analysis, filtrate, which returns, leaches, and it is 28% that phase analysis, which adds water to size mixing to ore pulp mass percent concentration, then
Addition collecting agent butyl xanthate 90g/t, foaming agent J-622 40g/t are sized mixing, and first time flotation is carried out after the completion of sizing mixing, and are floated
Froth pulp is selected as low-grade concentrate, mine tailing sequentially add butyl xanthate 40g/t, foaming agent J-622 20g/t are adjusted
Second of flotation is carried out after slurry, flotation froth product is incorporated as low-grade concentrate with first time flotation froth product, produced in groove
Product as tailing waste, in final low-grade concentrate and high-grade concentrate Cu and Ni overall recovery be respectively 79.73%,
90.02%, content of MgO 4.21%；
Using the technological process shown in Fig. 2, copper nickel sulfide mineral is accounted for 85.3% through muck ore grinding to fineness -0.074mm, added
It is 33% that water, which is sized mixing to ore pulp mass percent concentration, and it is yellow then to sequentially add inhibitor sodium metasilicate 2000g/t, collecting agent butyl
Medicine 120g/t and foaming agent J-622 60g/t are stirred and sized mixing, and conventional roughing, selected and scan is carried out after the completion of sizing mixing,
It is selected and during scanning, product and scan froth pulp in cleaner cell and be back to upper level roughing, selected and scan operation, most
Two products of copper-nickel concentrate and mine tailing are obtained eventually, and Cu and Ni overall recovery is respectively 77.32%, 86.42% in concentrate, in concentrate
Content of MgO is 6.8%.It can be seen that using the invention, the content of magnesia can be reduced to 4.21% by 6.8% in concentrate, and carry simultaneously
High-copper nickel recovery 2.41 and 3.6 percentage points, the dosage of inhibitor sodium metasilicate is reduced to by 2000g/t in rougher process
1200g/t。
Embodiment 2：Ore sample is the copper nickel sulfide mineral in Yunnan Baima stockaded village cupro-nickel mining area, and raw ore averagely contains Ni 1.2%,
Cu 0.7%, MgO 16.67%, main gangue mineral are serpentine, chlorite, dolomite and quartz.
Copper nickel sulfide mineral after muck ore grinding accounts for 76.43% to fineness -0.074mm, adds water to size mixing according to flow shown in Fig. 1
It is 30% to ore pulp mass percent concentration, then sequentially adds inhibitor sodium metasilicate 1600g/t, collecting agent ethyl xanthate 100g/
T and foaming agent 2#Oily 40g/t, which is stirred, to be sized mixing, and conventional roughing, selected and scan, selected groove is carried out after the completion of sizing mixing
Interior product and the froth pulp scanned are not back to upper level roughing, selected or scan operation, obtain high-grade nickel concentrate, chats
And mine tailing；
Concentrated sulfuric acid 8kg/t is added after flotation chats is merged and carries out selective acidleach de-magging, extraction time 1.5h, is leached
After the completion of be filtrated to get filtrate and phase analysis, filtrate, which returns, leaches, and it is 25% that phase analysis, which adds water to size mixing to ore pulp mass percent concentration,
Then collecting agent ethyl xanthate 80g/t, foaming agent J-622 50g/t are sequentially added to be sized mixing, first is carried out after the completion of sizing mixing
Secondary flotation, flotation froth product is as low-grade concentrate, and product adds ethyl xanthate 50g/t, foaming agent J-622 25g/t in groove
Second of flotation is carried out after being sized mixing, flotation froth product merges collectively as low-grade essence with first time flotation froth product
Ore deposit, product is as tailing waste in groove, and Cu and Ni overall recovery is respectively in final low-grade concentrate and high-grade concentrate
81.58%th, 88.4%, content of MgO 3.8%.
Using the technological process shown in Fig. 2, copper nickel sulfide mineral is accounted for 76.43% through muck ore grinding to fineness -0.074mm, added
It is 30% that water, which is sized mixing to ore pulp mass percent concentration, then sequentially adds inhibitor sodium metasilicate 3000g/t, and collecting agent ethyl is yellow
Medicine 100g/t and foaming agent 2#Oily 40g/t, which is stirred, to be sized mixing, and conventional roughing, selected and scan, essence are carried out after the completion of sizing mixing
Select in groove product and scan froth pulp and be back to upper level roughing, selected and scan operation, it is final to obtain copper-nickel concentrate and tail
Two products of ore deposit, the Cu and Ni rate of recovery is respectively 78.86%, 85.4% in concentrate, and content of MgO is 5.4% in concentrate.It can be seen that adopt
With the invention, the content of magnesia in concentrate can be made to be reduced to 3.8% by 5.4%, and improve the cupro-nickel rate of recovery 2.72 and 3.0 simultaneously
Percentage point, the dosage of inhibitor sodium metasilicate is reduced to 1600g/t by 3000g/t in rougher process.
Embodiment 3：Ore sample is Xinjiang low grade copper-nickel sulphide ores, and raw ore averagely contains Ni 0.52%, Cu
0.39%, MgO 9.32%, main gangue mineral are talcum, chlorite, dolomite and the tremolite.
Low grade copper-nickel sulphide ores after muck ore grinding accounts for 82.34% to fineness -0.074mm, add according to flow shown in Fig. 1
It is 32.3% that water, which is sized mixing to ore pulp mass percent concentration, then sequentially adds inhibitor sodium metasilicate 2000g/t, collecting agent butyl
Xanthate 120g/t and foaming agent J-622 60g/t are stirred and sized mixing, and conventional roughing, selected and sweep is carried out after the completion of sizing mixing
Choosing, product and the froth pulp scanned are not back to upper level roughing, selected or scan operation in selected groove, obtain high-grade
Nickel ore concentrate, chats and mine tailing；
Concentrated sulfuric acid 15kg/t is added after flotation chats is merged and carries out selective acidleach de-magging, extraction time 1.2h, leaching
It is filtrated to get filtrate and phase analysis after the completion of going out, filtrate, which returns, leaches, and phase analysis adds water to size mixing to be to ore pulp mass percent concentration
30%, then collecting agent 110g/t successively（Butyl xanthate 50g/t, the g/t of ethyl xanthate 60）, foaming agent J-622 60g/t progress
Size mixing, first time flotation is carried out after the completion of sizing mixing, flotation froth product is as low-grade concentrate, and product adds collecting agent in groove
60g/t（Butyl xanthate 30g/t, ethyl xanthate 30g/t）, foaming agent J-622 30g/t carry out second of flotation after being sized mixing,
Flotation froth product merges with first time flotation froth product collectively as low-grade concentrate, in groove product as tailing waste,
Cu and Ni overall recovery is respectively 78.32%, 82.6% in final low-grade concentrate and high-grade concentrate, content of MgO 4.34%.
Using the technological process shown in Fig. 2, copper nickel sulfide mineral is accounted for 82.34% through muck ore grinding to fineness -0.074mm, added
It is 32.3% that water, which is sized mixing to ore pulp mass percent concentration, then adds inhibitor sodium metasilicate 3200g/t, collecting agent butyl xanthate
120g/t and foaming agent J-622 60g/t are stirred and sized mixing, and conventional roughing, selected and scan, essence are carried out after the completion of sizing mixing
Select in groove product and scan froth pulp and be back to upper level roughing, selected and scan operation, it is final to obtain copper-nickel concentrate and tail
Two products of ore deposit, the Cu and Ni rate of recovery is respectively 74.43%, 78.26% in concentrate, and content of MgO is 5.16% in concentrate.It can be seen that
Using the invention, the content of magnesia in concentrate can be made to be reduced to 4.34% by 5.16%, and improve the cupro-nickel rate of recovery 3.89 simultaneously
With 4.43 percentage points, the dosage of inhibitor sodium metasilicate is reduced to 2000g/t by 3200g/t in rougher process.
Embodiment 4：Ore sample is the copper nickel sulfide mineral in Yunnan Baima stockaded village cupro-nickel mining area, and raw ore averagely contains Ni 1.2%,
Cu 0.7%, MgO 16.67%, main gangue mineral are serpentine, chlorite, dolomite and quartz.
Copper nickel sulfide mineral after muck ore grinding accounts for 76.43% to fineness -0.074mm, adds water to size mixing according to flow shown in Fig. 1
It is 30% to ore pulp mass percent concentration, then sequentially adds inhibitor sodium metasilicate 1600g/t, collecting agent ethyl xanthate 100g/
T and foaming agent 2#Oily 40g/t, which is stirred, to be sized mixing, and conventional roughing, selected and scan, selected groove is carried out after the completion of sizing mixing
Interior product and the froth pulp scanned are not back to upper level roughing, selected or scan operation, obtain high-grade nickel concentrate, chats
And mine tailing；
The hydrochloric acid 9kg/t that mass percent concentration 20% is added after flotation chats is merged carries out selective acidleach de-magging, leaching
It is 1h to go out the time, and filtrate and phase analysis are filtrated to get after the completion of leaching, and filtrate, which returns, leaches, and phase analysis adds water to size mixing to ore pulp quality hundred
It is 27% to divide specific concentration, then sequentially adds collecting agent ethyl xanthate 100g/t, foaming agent J-622 45g/t and is sized mixing, is sized mixing
After the completion of carry out first time flotation, flotation froth product is as low-grade concentrate, and product adds ethyl xanthate 55g/t in groove, rises
Infusion J-622 25g/t carry out second of flotation after being sized mixing, flotation froth product merges with first time flotation froth product
Collectively as low-grade concentrate, product is as tailing waste in groove, Cu and Ni in final low-grade concentrate and high-grade concentrate
Overall recovery is respectively 80.92%, 87.38%, content of MgO 4.21%.
Using the technological process shown in Fig. 2, copper nickel sulfide mineral is accounted for 76.43% through muck ore grinding to fineness -0.074mm, added
It is 30% that water, which is sized mixing to ore pulp mass percent concentration, then sequentially adds inhibitor sodium metasilicate 3000g/t, and collecting agent ethyl is yellow
Medicine 100g/t and foaming agent 2#Oily 40g/t, which is stirred, to be sized mixing, and conventional roughing, selected and scan, essence are carried out after the completion of sizing mixing
Select in groove product and scan froth pulp and be back to upper level roughing, selected and scan operation, it is final to obtain copper-nickel concentrate and tail
Two products of ore deposit, the Cu and Ni rate of recovery is respectively 78.86%, 85.4% in concentrate, and content of MgO is 5.4% in concentrate；It can be seen that adopt
With the invention, the content of magnesia in concentrate can be made to be reduced to 4.21% by 5.4%, and improve the He of the cupro-nickel rate of recovery 2.06 simultaneously
1.98 percentage points, the dosage of inhibitor sodium metasilicate is reduced to 1600g/t by 3000g/t in rougher process.
Embodiment 5：Ore sample is the copper nickel sulfide mineral in Gansu Jinchuan mining area, and raw ore contains Ni 1.64%, Cu
0.78%, MgO 21%, main gangue mineral are serpentine, talcum and olivine.
Copper nickel sulfide mineral accounts for 85.3% according to flow shown in Fig. 1 through muck ore grinding to fineness -0.074mm, adds water to size mixing to ore deposit
It is 33% to starch mass percent concentration, then adds inhibitor sodium metasilicate 1200g/t, collecting agent butyl xanthate 115g/t and foaming
Agent J-622 55g/t, which are stirred, to be sized mixing, and conventional roughing, selected and scan, product in selected groove is carried out after the completion of sizing mixing
It is not back to upper level roughing, selected or scan operation with the froth pulp scanned, obtains high-grade nickel concentrate, chats and tail
Ore deposit；
The hydrochloric acid 15kg/t that mass percent concentration 15% is added after chats is merged carries out selective acidleach de-magging, leaches
Time is 1.5h, and filtrate and phase analysis are filtrated to get after the completion of leaching, and filtrate, which returns, leaches, and phase analysis adds water to size mixing to ore pulp quality hundred
It is 30% to divide specific concentration, then adds collecting agent butyl xanthate 90g/t, foaming agent J-622 40g/t are sized mixing, completion of sizing mixing
First time flotation is carried out afterwards, and flotation froth product is sequentially adding butyl xanthate 40g/t, foaming as low-grade concentrate, mine tailing
Agent J-622 20g/t carry out second of flotation after being sized mixing, flotation froth product merges work with first time flotation froth product
For low-grade concentrate, product is as tailing waste in groove, Cu and Ni total recovery in final low-grade concentrate and high-grade concentrate
Rate is respectively 78.4%, 88.32%, content of MgO 4.86%；
Using the technological process shown in Fig. 2, copper nickel sulfide mineral is accounted for 85.3% through muck ore grinding to fineness -0.074mm, added
It is 33% that water, which is sized mixing to ore pulp mass percent concentration, and it is yellow then to sequentially add inhibitor sodium metasilicate 2000g/t, collecting agent butyl
Medicine 120g/t and foaming agent J-622 60g/t are stirred and sized mixing, and conventional roughing, selected and scan is carried out after the completion of sizing mixing,
It is selected and during scanning, product and scan froth pulp in cleaner cell and be back to upper level roughing, selected and scan operation, most
Two products of copper-nickel concentrate and mine tailing are obtained eventually, and Cu and Ni overall recovery is respectively 77.32%, 86.42% in concentrate, in concentrate
Content of MgO is 6.8%.It can be seen that using the invention, the content of magnesia can be reduced to 4.86% by 6.8% in concentrate, and carry simultaneously
High-copper nickel recovery 1.08 and 1.9 percentage points, the dosage of inhibitor sodium metasilicate is reduced to by 2000g/t in rougher process
1200g/t。
Claims (4)
- A kind of 1. method for improving the copper nickel sulfide mineral flotation chats cupro-nickel rate of recovery, it is characterised in that comprise the following steps that：（1）After copper nickel sulfide mineral ore grinding, carry out conventional roughing, scan with it is selected, it is selected and during scanning, cleaner tailings and Scavenger concentrate is not back to upper level roughing, selected or scan operation, obtains copper nickel sulfide mineral high-grade concentrate, chats and tail Ore deposit；（2）Selective acidleach de-magging is carried out using the hydrochloric acid of the concentrated sulfuric acid or mass percent concentration 15 ~ 25% to chats to handle, leaching It is normal temperature to go out temperature, and extraction time is 1 ~ 1.5h, and separation of solid and liquid is carried out after the completion of leaching, and filtrate, which returns, is leached, and phase analysis is floated Choosing；（3）By step（2）It is 25 ~ 30% that gained phase analysis, which adds water to size mixing to ore pulp mass percent concentration,；（4）To step（3）Gained ore pulp carries out flotation, and flotation operation is divided into twice, and first time flotation addition collecting agent 80 ~ 120g/t and 40 ~ 60g/t of foaming agent are sized mixing, and flotation are carried out after the completion of sizing mixing, the froth pulp of flotation is as low-grade essence Ore deposit, product carries out second of flotation in groove, same in floatation process to add 20 ~ 30g/t of 40 ~ 60g/t of collecting agent and foaming agent, the The froth pulp of secondary flotation merges with the froth pulp of first time flotation collectively as low-grade concentrate, the groove of second of flotation Interior product is as tailing waste.
- 2. the method according to claim 1 for improving the copper nickel sulfide mineral flotation chats cupro-nickel rate of recovery, it is characterised in that：It is dense The hydrochloric acid dosage of sulfuric acid or mass percent concentration 15 ~ 25% is 8 ~ 15 kg/t.
- 3. the method according to claim 1 or 2 for improving the copper nickel sulfide mineral flotation chats cupro-nickel rate of recovery, its feature exist In：Collecting agent is ethyl xanthate or/and butyl xanthate.
- 4. the method according to claim 3 for improving the copper nickel sulfide mineral flotation chats cupro-nickel rate of recovery, it is characterised in that：Rise Infusion is J-622.
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| CN106269274A (en) * | 2016-06-20 | 2017-01-04 | 兰州大学 | A kind of medicament for copper nickel sulfide mineral flotation in acidic condition |
| CN106583061B (en) * | 2016-11-29 | 2018-12-07 | 金川集团股份有限公司 | A kind of two sections of acid adding floatation process of villamaninite |
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| CN104998758B (en) * | 2015-07-09 | 2017-05-24 | 广东省工业技术研究院(广州有色金属研究院) | Ore dressing and magnesium reduction method of copper-nickel sulfide-platinum-group metal ores |
| CN105013603B (en) * | 2015-07-24 | 2017-06-06 | 中南大学 | A kind of beneficiation method of copper nickel sulfide mineral |
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