CN101972705A - Benefication method for copper nickel - Google Patents
Benefication method for copper nickel Download PDFInfo
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- CN101972705A CN101972705A CN 201010533152 CN201010533152A CN101972705A CN 101972705 A CN101972705 A CN 101972705A CN 201010533152 CN201010533152 CN 201010533152 CN 201010533152 A CN201010533152 A CN 201010533152A CN 101972705 A CN101972705 A CN 101972705A
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Abstract
The invention relates to a benefication method for copper nickel. The benefication method for the copper nickel is characterized by comprising the following steps of: (1) finely grinding and desliming on raw copper nickel; (2) performing copper ore flotation on the deslimed raw ore; (3) performing copper concentration on mixed copper rough concentrate obtained in the step (2); (4) performing copper scavenging on copper middling ore I in the step (3); (5) regrinding the mixed copper nickel concentrate of copper and part of nickel in the step (3) and then performing copper nickel separation; (6) performing copper concentration on the copper rough concentrate in the step (5) and performing copper scavenging on the nickel rough concentrate in the step (5); (7) performing copper scavenging II on the nickel concentrate in the step (6); and (8) performing nickel roughing on the reground copper tailings in the step (4). In the benefication method for the copper nickel of the invention, the adaptability of a flotation separation process is high; complex low-grade particle-embedded copper and nickel minerals can be recycled; flotation separation of the copper and nickel minerals can be realized; and the quality and the recovery rate of copper and nickel concentrate are obviously improved.
Description
Technical field
A kind of beneficiation method of copper nickel stone, relate to a kind of from copper nickel the beneficiation method of separating copper, nickel, the flotation separation method of particularly low-grade fine-grained disseminated grain copper nickel.
Background technology
At present, most copper nickel stone character complexity, grade is lower, and embedding cloth is trickle, and the gangue mineral argillization is serious in the ore, causes copper nickel flotation difficulty, and difficulty separated from one another is bigger, is difficult to obtain qualified copper, concentrate that nickel is single.Show in the production it is that main metal content is on the low side in copper, the nickel ore concentrate, impurity content is higher simultaneously, and copper nickel contains seriously mutually.For the cu-ni sulphide ore of these complicated low-grade fine-grained disseminated grains, most mines or sorting copper nickel bulk concentrate only, or because of the big and not yet in effect exploitation of ore dressing difficulty.Have only the minority mine to carry out copper nickel and separate, obtained single copper concentrate and nickel ore concentrate.Nonetheless, carried out ore dressing plant also many employing copper nickel floatation process that mixed floating-copper nickel separates that copper nickel separates, because nickel mineral content is far above copper mineral content in the copper nickel bulk concentrate, difficulty was bigger when the nickelic ore of this low copper carried out the separation of copper nickel, be difficult to obtain the higher copper of grade, the single concentrate of nickel, also have influence on the rate of recovery of copper, nickel ore concentrate.
Traditional copper-nickel controling differential flotation process for copper, the lime that adopt are made the nickel mineral inhibitor more, and xanthate is done the diffeential floatation of copper mineral collecting agent, and this technology has carried out copper mineral and nickel mineral effectively to separate, but, cause nickel recovery on the low side because of nickel mineral is suppressed back activation difficulty.Copper nickel bulk flotation technology adopts copper sulphate to make copper, nickel mineral activator more, xanthate, butyl ammonium aerofloat are made copper, the nickel mineral collecting agent carries out bulk flotation, adopt lime to make the nickel mineral inhibitor again and carry out the separation of copper nickel, this technology is difficult to copper, nickel mineral are effectively separated, thereby have influence on the grade of copper, nickel master metal, copper, nickel ore concentrate quality are not high yet, and copper, nickel contain seriously mutually in the concentrate.This makes that the whole synthesis utilization rate of this type of resource is not high.
Chinese invention patent " a kind of mineral separation method for copper nickel sulfide ore ", patent No. CN97116773.7 discloses a kind of beneficiation method of copper nickel sulfide mineral, it has only solved change copper nickel thing surface state, improve the rate of recovery of copper, nickel, can't be applicable to copper, nickel FLOTATION SEPARATION in the complicated low-grade fine-grained disseminated grain cu-ni sulphide ore, so this patent scope of application is narrower.
Summary of the invention
Purpose of the present invention is exactly at the copper that exists in the above-mentioned prior art-the nickel separating difficulty is big, copper-nickel concentrate is of poor quality, copper nickel contains serious problem mutually in the concentrate, a kind of economy is provided, is suitable for, the beneficiation method of the copper nickel of simple, cleaning, good separating effect.
The objective of the invention is to be achieved through the following technical solutions.
A kind of beneficiation method of copper nickel is characterized in that the step of its ore dressing process comprises:
(1) copper nickel raw ore is carried out levigate, desliming;
(2) raw ore after the desliming carries out copper mineral flotation, the mixed copper rough concentrate and the copper mine tailing I of the nickel mineral that obtain copper mineral and part adhesion, easily floats;
(3) it is selected that the mixed copper rough concentrate that step (2) is obtained carries out copper, obtains the copper nickel bulk concentrate and the copper chats I of copper and part of nickel;
(4) the copper chats I in the step (3) is carried out copper and scan, obtain copper chats II and copper mine tailing II.Copper chats II return last layer the selected operation of copper, copper mine tailing II and copper mine tailing I merge regrinds;
(5) the copper nickel bulk concentrate of copper in the step (3) and part of nickel is regrinded, carried out copper nickel after regrinding and separate.Obtain copper rough concentrate and nickel rough concentrate after the separation;
(6) the copper rough concentrate in the step (5) is carried out selected copper concentrate and the copper chats III of once obtaining of copper, the nickel rough concentrate carries out copper and scans I and obtain nickel ore concentrate and nickel chats I.The copper nickel bulk concentrate that nickel chats I is returned last layer with copper chats III is regrinded.
(7) nickel ore concentrate in the step (6) is carried out copper and scan II, obtain nickel ore concentrate I and nickel chats II, nickel chats II is returned the copper of last layer and is scanned the I operation.
(8) the copper mine tailing after the regrinding in the step (4) is carried out nickel and roughly select, obtain nickel rough concentrate and nickel mine tailing.The nickel rough concentrate carries out nickel selected three times, obtains nickel ore concentrate II and three selected chats of nickel, and three selected chats of nickel return last layer respectively in proper order.The nickel mine tailing carries out nickel to be scanned three times, obtains mine tailing and three nickel are scanned chats, three nickel scan chats respectively order return last layer.
The beneficiation method of a kind of copper nickel of the present invention, it is characterized in that in levigate in the described step (1), the desliming process mog for-0.074mm greater than 83%; The process conditions of desliming process are: add blowing agent 2
#Oil 14g/t, be 2～4 minutes action time; Copper mine tailing II and copper mine tailing I merge the grinding rate again of regrinding for-0.074mm content greater than 95%.
The beneficiation method of a kind of copper nickel of the present invention is characterized in that the process conditions that raw ore in the described step (2) carries out the copper mineral flotation process are: add collecting agent Z-200:21g/t, 3～4 minutes action time.Add blowing agent 2
#Oil 14g/t, be 2～4 minutes action time.
The beneficiation method of a kind of copper nickel of the present invention is characterized in that mixed copper rough concentrate in the described step (3) carries out the selected process conditions of copper and is: add inhibitor carboxymethyl cellulose 400g/t, be 4～6 minutes action time.
The beneficiation method of a kind of copper nickel of the present invention is characterized in that copper chats I in the described step (4) carries out the process conditions that copper scans and be: add inhibitor carboxymethyl cellulose 150g/t, 5 minutes action time.Add collecting agent Z-200:7g/t, 3～4 minutes action time.
The beneficiation method of a kind of copper nickel of the present invention is characterized in that the copper nickel bulk concentrate in the described step (5) is regrinded, again grinding rate be-0.025mm content is greater than 95%; Carrying out copper nickel separation processes condition after copper nickel bulk concentrate is regrinded is: add the medicament active carbon 250g/t of reagent removal, 5～7 minutes action time.Adding inhibitor lime 350g/t(pH values of pulp is 12) and sodium hydrogensulfite 200g/t, 5～7 minutes action time.Add collecting agent butyl xanthate 20g/t, 3～4 minutes action time.Add blowing agent 2
#Oil 7g/t, 2～4 minutes action time.
The beneficiation method of a kind of copper nickel of the present invention, it is characterized in that the middle copper rough concentrate of described step (6) carries out copper dressing process condition and is: adding inhibitor lime 100g/t(pH values of pulp is 12) and sodium hydrogensulfite 50g/t, 5～7 minutes action time; The nickel rough concentrate carries out copper and scans the I process conditions and be: adding inhibitor lime 150g/t(pH values of pulp is about 12) and sodium hydrogensulfite 70g/t, 5～7 minutes action time. Add collecting agent butyl xanthate 7g/t, 3～4 minutes action time.
The beneficiation method of a kind of copper nickel of the present invention, it is characterized in that nickel ore concentrate in the described step (7) carries out copper and scans the process conditions of II and be: adding inhibitor lime 50g/t(pH values of pulp is 12) and sodium hydrogensulfite 20g/t, 5～7 minutes action time.Add collecting agent butyl xanthate 3g/t, 3～4 minutes action time.
The beneficiation method of a kind of copper nickel of the present invention, it is characterized in that copper mine tailing in the described step (8) carries out the process conditions that nickel roughly selects and is: adding activator sulfuric acid 8000g/t(slurry pH is 6) and copper sulphate 500g/t, be 5～7 minutes action time.Add collecting agent butyl ammonium aerofloat 100g/t and Mac-12
#14g/t, 3～4 minutes action time.Add blowing agent 2
#Oil 14g/t, 2～4 minutes action time; The nickel rough concentrate carries out the selected three times process conditions of nickel: selected adding inhibitor carboxymethyl cellulose 450g/t for the first time, 5～7 minutes action time.Selected adding inhibitor carboxymethyl cellulose 300g/t for the second time, 5～7 minutes action time.Selected for the third time adding inhibitor carboxymethyl cellulose 150g/t, 5～7 minutes action time; The nickel rougher tailings carries out nickel and scans three times process conditions and be: scan that to add activator sulfuric acid 2000g/t(slurry pH be 6 for the first time) and copper sulphate 150g/t, be 5～7 minutes action time.Add collecting agent butyl ammonium aerofloat 30g/t and Mac-12
#7g/t, 3～4 minutes action time.Scanning for the second time adding activator sulfuric acid 2000g/t(slurry pH is 6) and copper sulphate 50g/t, be 5～7 minutes action time.Add collecting agent butyl ammonium aerofloat 20g/t and Mac-12
#4g/t, 3～4 minutes action time.Scanning adding activator sulfuric acid 1000g/t(slurry pH for the third time is 6) and copper sulphate 15g/t, be 5～7 minutes action time.Add collecting agent butyl ammonium aerofloat 10g/t and Mac-12
#2g/t, 3～4 minutes action time.Simultaneously the chats that obtains of triple cleaning and scanning for three times all order turn back to the last layer operation.
The main points that the raw ore preliminary treatment will be held are: contain a large amount of gangue minerals in the copper nickel thing usually, and these gangue mineral argillizations are serious, natural floatability is better, enters easily in the flotation froth, influences the flotation of copper nickel thing.Therefore raw ore need be carried out preliminary treatment, adopt 2
#Oil carries out the desliming operation.And 2
#Oil consumption must control well, consumption very little, desliming is incomplete; Consumption is too many, and copper, nickel mineral loss are seriously.
The main points of selecting the copper circulation to hold are:
Because nickel mineral is suppressed back activation difficulty, cause nickel recovery on the low side, so in the cu-ni sulphide ore floatation separation process, should nickel mineral not suppressed, simultaneously in the copper mineral flotation process, if the nickel mineral of introducing can increase the difficulty that copper nickel separates too much again, so the selection of copper collecting agent is the key of test in floating copper process.The Z-200 collecting agent has shown high selective power in selecting the copper process, the rate of recovery of copper is also higher simultaneously, and the content of nickel is minimum in the copper rough concentrate, and follow-up copper nickel is separated the critical effect of having played.Therefore, employing is done copper mineral collecting agent, 2 to the Z-200 that copper has high selectivity
#Oil carries out the Floatation of Copper mineral as foaming agent.For avoiding nickel mineral to be suppressed back activation difficulty, nickel mineral is not suppressed, but the consumption of Z-200 must be got hold of in the floating copper process.Consumption is little, and copper recovery is not enough; Consumption is big, and the content of nickel increases, and increases the pressure that copper nickel separates, so will control the consumption of Z-200 in right amount.
Copper nickel separates the main points that will hold and is: want earlier copper nickel bulk concentrate is regrinded for copper, nickel adhesion densification, copper nickel stone that disseminated grain size is trickle, promote the abundant monomer dissociation of copper nickel thing.Add the activated carbon reagent removal after regrinding, adopt lime and sodium hydrogensulfite to make the nickel mineral inhibitor, butyl xanthate is made the copper mineral collecting agent, presses down the floating copper copper nickel separation of nickel.Wherein copper nickel bulk concentrate again the consumption of grinding rate and activated carbon be crucial, whether fully the selection of grinding rate has determined copper nickel thing monomer dissociation again, and the quality of activated carbon reagent removal effect directly affects the separation of copper nickel, because the activated carbon consumption is too little, then reagent removal is incomplete; Consumption is too big, does not then adsorb saturated that part of activated carbon and can adsorb collecting agent and foaming agent, causes collecting agent and foaming agent consumption to increase, influences copper, nickel separates.
The main points of selecting the nickel circulation to hold are: owing to the gangue mineral in the ore has alkaline higher, specific area is huge, characteristics such as high adsorption capacity, being adsorbed on nickel mineral surface easily influence the flotation of nickel mineral, so adopt sulfuric acid adjusting slurry pH to carry out the activated ni mineral about 5～6 during the flotation nickel mineral.
The present invention adopts Z-200 to make copper mineral collecting agent Floatation of Copper mineral, regrind after copper nickel rough concentrate is selected, realize that copper, nickel monomer fully dissociate, adopt activated carbon to carry out reagent removal afterwards, adding lime presses down the floating copper copper nickel of nickel with the sodium hydrogensulfite composite restrainer and separates, chats that copper nickel is selected and copper tail merge, and adopt sulfuric acid, copper sulphate to make activator, butyl ammonium aerofloat and Mac-12
#Make collecting agent flotation another part nickel mineral, realized the efficient FLOTATION SEPARATION of complicated low-grade fine-grained disseminated grain cu-ni sulphide ore.
The copper mineral collecting agent Z-200 that the present invention adopts is to the nickel mineral poor selectivity, introducing nickel mineral that can be less is in copper concentrate, and (lime+sodium hydrogensulfite) combination medicament can carry out strong inhibition to nickel mineral, the copper tail is independent flotation another part nickel mineral again, the copper nickel FLOTATION SEPARATION of complicated low-grade fine-grained disseminated grain cu-ni sulphide ore is become carry out easily; Realized the separation of copper, nickel mineral, output qualified copper, the single concentrate of nickel; The purpose mineral are fast thorough emersion in flotation circuit separately, has avoided the vicious circle of chats and the unnecessary consumption of floating agent, meets energy-conservation needs; The floating agent high-efficiency cleaning that adopts meets the requirement of cleaner production; Stable technical process, strong to ore adaptability, season, the temperature difference was little to the index influence.
Method of the present invention, it is strong to float floatation separation process adaptability, copper, the nickel mineral of the low-grade fine-grained disseminated grain of not only recyclable complexity, and can realize the FLOTATION SEPARATION of copper, nickel mineral, significantly improved the quality and the rate of recovery of copper, nickel ore concentrate, improved the level of profitability, and do not pollute natural environment.Be a kind of economy, simple, be suitable for, controllability is strong, good separating effect, processing cost a kind of low-grade fine-grained disseminated grain copper nickel stone iso flotability flotation separation process scheme low, applied widely.
The specific embodiment
A kind of beneficiation method of copper nickel, the step of its ore dressing process comprises:
(1) copper nickel raw ore is carried out levigate, desliming; Its mog is-0.074mm is greater than 83%; The desliming process adds blowing agent 2
#Oil 14g/t, be 2～4 minutes action time;
(2) raw ore after the desliming carries out copper mineral flotation, the mixed copper rough concentrate and the copper mine tailing I of the nickel mineral that obtain copper mineral and part adhesion, easily floats; The process conditions of its floatation process are: add collecting agent Z-200:21g/t, 3～4 minutes action time.Add blowing agent 2
#Oil 14g/t, be 2～4 minutes action time.
(3) it is selected that the mixed copper rough concentrate that step (2) is obtained carries out copper, obtains the copper nickel bulk concentrate and the copper chats I of copper and part of nickel; Its mixed copper rough concentrate carries out the selected process conditions of copper: add inhibitor carboxymethyl cellulose 400g/t, be 4～6 minutes action time.
(4) the copper chats I in the step (3) is carried out copper and scan, obtain copper chats II and copper mine tailing II.Copper chats II return last layer the selected operation of copper, copper mine tailing II and copper mine tailing I merge regrinds; Copper mine tailing II and copper mine tailing I merge the grinding rate again of regrinding for-0.074mm content greater than 95%; Its copper chats I is carried out the process conditions that copper scans: add inhibitor carboxymethyl cellulose 150g/t, 5 minutes action time.Add collecting agent Z-200:7g/t, 3～4 minutes action time.
(5) the copper nickel bulk concentrate of copper in the step (3) and part of nickel is regrinded, carried out copper nickel after regrinding and separate.Obtain copper rough concentrate and nickel rough concentrate after the separation; The grinding rate again that copper nickel bulk concentrate is regrinded for-0.025mm content greater than 95%; Carrying out copper nickel separation processes condition after copper nickel bulk concentrate is regrinded is: add the medicament active carbon 250g/t of reagent removal, 5～7 minutes action time.Adding inhibitor lime 350g/t(pH values of pulp is 12) and sodium hydrogensulfite 200g/t, 5～7 minutes action time.Add collecting agent butyl xanthate 20g/t, 3～4 minutes action time.Add blowing agent 2
#Oil 7g/t, 2～4 minutes action time.
(6) the copper rough concentrate in the step (5) is carried out selected copper concentrate and the copper chats III of once obtaining of copper, the nickel rough concentrate carries out copper and scans I and obtain nickel ore concentrate and nickel chats I.The copper nickel bulk concentrate that nickel chats I is returned last layer with copper chats III is regrinded; Its copper rough concentrate carries out copper dressing process condition: adding inhibitor lime 100g/t(pH values of pulp is 12) and sodium hydrogensulfite 50g/t, 5～7 minutes action time; The nickel rough concentrate carries out copper and scans the I process conditions and be: adding inhibitor lime 150g/t(pH values of pulp is about 12) and sodium hydrogensulfite 70g/t, 5～7 minutes action time. Add collecting agent butyl xanthate 7g/t, 3～4 minutes action time.
(7) nickel ore concentrate in the step (6) is carried out copper and scan II, obtain nickel ore concentrate I and nickel chats II, nickel chats II is returned the copper of last layer and is scanned the I operation; Its nickel ore concentrate carries out copper and scans the process conditions of II and be: adding inhibitor lime 50g/t(pH values of pulp is 12) and sodium hydrogensulfite 20g/t, 5～7 minutes action time.Add collecting agent butyl xanthate 3g/t, 3～4 minutes action time.
(8) the copper mine tailing after the regrinding in the step (4) is carried out nickel and roughly select, obtain nickel rough concentrate and nickel mine tailing.The nickel rough concentrate carries out nickel selected three times, obtains nickel ore concentrate II and three selected chats of nickel, and three selected chats of nickel return last layer respectively in proper order.The nickel mine tailing carries out nickel to be scanned three times, obtains mine tailing and three nickel are scanned chats, three nickel scan chats respectively order return last layer; Its copper mine tailing carries out the process conditions that nickel roughly selects: adding activator sulfuric acid 8000g/t(slurry pH is 6) and copper sulphate 500g/t, be 5～7 minutes action time.Add collecting agent butyl ammonium aerofloat 100g/t and Mac-12
#14g/t, 3～4 minutes action time.Add blowing agent 2
#Oil 14g/t, 2～4 minutes action time; The nickel rough concentrate carries out the selected three times process conditions of nickel: selected adding inhibitor carboxymethyl cellulose 450g/t for the first time, 5～7 minutes action time.Selected adding inhibitor carboxymethyl cellulose 300g/t for the second time, 5～7 minutes action time.Selected for the third time adding inhibitor carboxymethyl cellulose 150g/t, 5～7 minutes action time; The nickel rougher tailings carries out nickel and scans three times process conditions and be: scan that to add activator sulfuric acid 2000g/t(slurry pH be 6 for the first time) and copper sulphate 150g/t, be 5～7 minutes action time.Add collecting agent butyl ammonium aerofloat 30g/t and Mac-12
#7g/t, 3～4 minutes action time.Scanning for the second time adding activator sulfuric acid 2000g/t(slurry pH is 6) and copper sulphate 50g/t, be 5～7 minutes action time.Add collecting agent butyl ammonium aerofloat 20g/t and Mac-12
#4g/t, 3～4 minutes action time.Scanning adding activator sulfuric acid 1000g/t(slurry pH for the third time is 6) and copper sulphate 15g/t, be 5～7 minutes action time.Add collecting agent butyl ammonium aerofloat 10g/t and Mac-12
#2g/t, 3～4 minutes action time.Simultaneously the chats that obtains of triple cleaning and scanning for three times all order turn back to the last layer operation.
Embodiment 1
The raw ore that sorts is a kind of many metallic coppers Ni sulphide mine that chalcopyrite, pentlandite, capillose, violarite and association have rare precious metals such as gold, silver, platinum, palladium that contains, gangue mineral has serpentine, talcum, chlorite, pyroxene, olivine etc. in the ore, copper in the raw ore, nickel grade are lower, wherein Cu:0.20%, Ni:0.48%.Copper, nickel mineral embedding Bu Tezheng complexity, disseminated grain size is thin-and little, monomer dissociation is poor, copper, nickel adhesion densification.
Adopt copper nickel iso flotability flotation separating technology that the low-grade fine-grained disseminated grain cu-ni sulphide ore of this complexity stone is carried out FLOTATION SEPARATION.Raw ore mog-0.074mm content adds foaming agent 2 greater than 83%
#Oil 14g/t carries out the raw ore desliming, adds collecting agent Z-200 14g/t after the desliming, foaming agent 2
#Oil 14g/t carries out Floatation of Copper mineral and part of nickel mineral.It is once selected that the copper nickel rough concentrate of emersion adds inhibitor carboxymethyl cellulose 400g/t, copper-nickel concentrate after selected is regrinded, and adds activated carbon 250g/t and carries out reagent removal, adds inhibitor lime 350g/t and sodium hydrogensulfite 200g/t, collecting agent butyl xanthate 20g/t, foaming agent 2
#Oil 7g/t carries out copper nickel to be separated.Copper concentrate adding inhibitor lime 100g/t and sodium hydrogensulfite 50g/t after the separation are once selected.Nickel ore concentrate after the separation carries out scanning for twice, scans for the first time to add inhibitor lime 150g/t and sodium hydrogensulfite 70g/t, collecting agent butyl xanthate 7g/t, foaming agent 2
#Oil 3g/t, scanning dosing for the second time is primary 1/3.Copper nickel mixes selected chats and adds inhibitor carboxymethyl cellulose 150g/t, and collecting agent Z-200 7g/t scans once.Scan the merging of chats and copper nickel rougher tailings and regrind, the back of regrinding adds activator sulfuric acid 8000g/t and copper sulphate 500g/t, collecting agent butyl ammonium aerofloat 100g/t and Mac-12
#14g/t, foaming agent 2
#Oil 14g/t, the flotation nickel mineral.The nickel rough concentrate adds the inhibitor carboxymethyl cellulose selected three times, and selected carboxymethyl cellulose consumption is 450g/t for the first time, and selected carboxymethyl cellulose consumption is 300g/t for the second time, and selected for the third time carboxymethyl cellulose consumption is 150g/t.Nickel carries out three nickel after roughly selecting to be scanned, scan dosing for the first time and be roughly select 1/3, scan dosing for the second time and be primary 1/3, scanning dosing for the third time is primary 1/3.The closed circuit sorting index that adopts copper nickel iso flotability flotation technological process of the present invention to obtain sees Table 1:
Table 1:
As seen from Table 1: the low-grade fine-grained disseminated grain copper nickel sulfide mineral of this complexity stone is adopted copper nickel iso flotability flotation of the present invention technological process carrying out copper nickel FLOTATION SEPARATION, the single copper that can obtain, nickel essence, and concentrate grade is higher, quality is better, copper, nickel recovery are higher, the separation of copper nickel is easier to, and simple to operate, controllability is strong.
Embodiment 2
The raw ore that sorts is a kind of many metallic coppers Ni sulphide mines such as chalcopyrite, pyrite, pentlandite, magnetic iron ore, magnetic iron ore that contain, and gangue mineral has olivine, pyroxene, serpentine, the tremolite, talcum, saponite etc. in the ore.Copper in the raw ore, nickel mineral grade are lower, and wherein the Cu grade is 0.27%, the Ni grade is 0.54%.Copper, nickel mineral embedding Bu Tezheng complexity, disseminated grain size based in, in being-fine-grained disseminated grain, monomer dissociation is relatively poor, copper, nickel mineral adhesion are obvious.
Adopt copper nickel iso flotability flotation separating technology of the present invention that it is carried out FLOTATION SEPARATION, it sorts step and is:
(1) copper nickel raw ore is carried out levigate, desliming; Its mog is-0.074mm is greater than 78%; The desliming process adds blowing agent 2
#Oil 14g/t, be 4 minutes action time;
(2) raw ore after the desliming carries out copper mineral flotation, the mixed copper rough concentrate and the copper mine tailing I of the nickel mineral that obtain copper mineral and part adhesion, easily floats; The process conditions of its floatation process are: add copper collecting agent Z-200:21g/t, 4 minutes action time.Add blowing agent 2
#Oil 14g/t, be 4 minutes action time.
(3) it is selected that the mixed copper rough concentrate that step (2) is obtained carries out copper, obtains the copper nickel bulk concentrate and the copper chats I of copper and part of nickel; Its mixed copper rough concentrate carries out the selected process conditions of copper: add inhibitor carboxymethyl cellulose 300g/t, be 6 minutes action time.
(4) the copper chats I in the step (3) is carried out copper and scan, obtain copper chats II and copper mine tailing II.Copper chats II return last layer the selected operation of copper, copper mine tailing II and copper mine tailing I merge regrinds; Copper mine tailing II and copper mine tailing I merge the grinding rate again of regrinding for-0.074mm content greater than 90%; Its copper chats I is carried out the process conditions that copper scans: add inhibitor carboxymethyl cellulose 150g/t, 5 minutes action time.Add collecting agent Z-200:7g/t, 4 minutes action time.
(5) the copper nickel bulk concentrate of copper in the step (3) and part of nickel is regrinded, carried out copper nickel after regrinding and separate.Obtain copper rough concentrate and nickel rough concentrate after the separation; The grinding rate again that copper nickel bulk concentrate is regrinded for-0.025mm content greater than 90%; Carrying out copper nickel separation processes condition after copper nickel bulk concentrate is regrinded is: add active carbon 250g/t reagent removal, 7 minutes action time.Adding inhibitor lime 300g/t(pH values of pulp is 12) and sodium hydrogensulfite 150g/t, 7 minutes action time.Add collecting agent butyl xanthate 10g/t, 4 minutes action time.Add blowing agent 2
#Oil 7g/t, 4 minutes action time.
(6) the copper rough concentrate in the step (5) is carried out selected copper concentrate and the copper chats III of once obtaining of copper, the nickel rough concentrate carries out copper and scans I and obtain nickel ore concentrate and nickel chats I.The copper nickel bulk concentrate that nickel chats I is returned last layer with copper chats III is regrinded; Its copper rough concentrate carries out copper dressing process condition: adding inhibitor lime 100g/t(pH values of pulp is 12) and sodium hydrogensulfite 50g/t, 7 minutes action time; The nickel rough concentrate carries out copper and scans the I process conditions and be: adding inhibitor lime 150g/t(pH values of pulp is about 12) and sodium hydrogensulfite 70g/t, 7 minutes action time. Add collecting agent butyl xanthate 7g/t, 3～4 minutes action time.
(7) nickel ore concentrate in the step (6) is carried out copper and scan II, obtain nickel ore concentrate I and nickel chats II, nickel chats II is returned the copper of last layer and is scanned the I operation; Its nickel ore concentrate carries out copper and scans the process conditions of II and be: adding inhibitor lime 50g/t(pH values of pulp is 12) and sodium hydrogensulfite 20g/t, 7 minutes action time.Add collecting agent butyl xanthate 3g/t, 4 minutes action time.
(8) the copper mine tailing after the regrinding in the step (4) is carried out nickel and roughly select, obtain nickel rough concentrate and nickel mine tailing.The nickel rough concentrate carries out nickel selected three times, obtains nickel ore concentrate II and three selected chats of nickel, and three selected chats of nickel return last layer respectively in proper order.The nickel mine tailing carries out nickel to be scanned three times, obtains mine tailing and three nickel are scanned chats, three nickel scan chats respectively order return last layer; Its copper mine tailing carries out the process conditions that nickel roughly selects: adding activator sulfuric acid 6000g/t(slurry pH is 6) and copper sulphate 400g/t, be 7 minutes action time.Add collecting agent butyl ammonium aerofloat 120g/t and Mac-12
#14g/t, 4 minutes action time.Add blowing agent 2
#Oil 14g/t, 4 minutes action time; The nickel rough concentrate carries out the selected three times process conditions of nickel: selected adding inhibitor carboxymethyl cellulose 300g/t for the first time, 7 minutes action time.Selected adding inhibitor carboxymethyl cellulose 200g/t for the second time, 5～7 minutes action time.Selected for the third time adding inhibitor carboxymethyl cellulose 100g/t, 7 minutes action time; The nickel rougher tailings carries out nickel and scans three times process conditions and be: scan that to add activator sulfuric acid 1500g/t(slurry pH be 6 for the first time) and copper sulphate 130g/t, be 7 minutes action time.Add collecting agent butyl ammonium aerofloat 40g/t and Mac-12
#7g/t, 4 minutes action time.Scanning for the second time adding activator sulfuric acid 1000g/t(slurry pH is 6) and copper sulphate 40g/t, be 7 minutes action time.Add collecting agent butyl ammonium aerofloat 15g/t and Mac-12
#4g/t, 4 minutes action time.Scanning adding activator sulfuric acid 1000g/t(slurry pH for the third time is 6) and copper sulphate 15g/t, be 7 minutes action time.Add collecting agent butyl ammonium aerofloat 5g/t and Mac-12
#2g/t, 4 minutes action time.Simultaneously the chats that obtains of triple cleaning and scanning for three times all order turn back to the last layer operation.
The closed circuit sorting index that adopts copper nickel iso flotability flotation technological process of the present invention to obtain sees Table 2:
Table 2:
As seen from Table 2: adopt copper nickel iso flotability flotation technology of the present invention to carry out copper nickel FLOTATION SEPARATION to this complexity low-grade copper Ni sulphide mine stone, single copper, the nickel ore concentrate that not only can obtain, and the concentrate index is better, copper, nickel recovery are higher.When copper nickel FLOTATION SEPARATION, this technology has shown extremely strong hungry adaptability, and it is easier, simple to operate that copper nickel separates, and controllability is strong.
Embodiment 3
The raw ore that sorts is a kind of many metallic coppers Ni sulphide mines such as chalcopyrite, covellite, niccolite, pentlandite, pyrite, magnetic iron ore that contain, gangue mineral mainly contains olivine, serpentine, saponite, talcum, chlorite etc. in the ore, copper in the raw ore, nickel mineral grade are lower, wherein Cu:0.36%, Ni:0.53%.Copper, nickel mineral embedding Bu Tezheng complexity, disseminated grain size be based on middle grain, in being-fine-grained disseminated grain, part is with fine grain teeth cloth, and monomer dissociation is relatively poor, copper, nickel adhesion densification.
The step of its ore dressing process is:
(1) copper nickel raw ore is carried out levigate, desliming; Its mog is-0.074mm is greater than 78%; The desliming process adds blowing agent 2
#Oil 14g/t, be 2 minutes action time;
(2) raw ore after the desliming carries out copper mineral flotation, the mixed copper rough concentrate and the copper mine tailing I of the nickel mineral that obtain copper mineral and part adhesion, easily floats; The process conditions of its floatation process are: add collecting agent Z-200:28g/t, 3～4 minutes action time.Add blowing agent 2
#Oil 21g/t, be 2 minutes action time.
(3) it is selected that the mixed copper rough concentrate that step (2) is obtained carries out copper, obtains the copper nickel bulk concentrate and the copper chats I of copper and part of nickel; Its mixed copper rough concentrate carries out the selected process conditions of copper: add inhibitor carboxymethyl cellulose 300g/t, be 4～6 minutes action time.
(4) the copper chats I in the step (3) is carried out copper and scan, obtain copper chats II and copper mine tailing II.Copper chats II return last layer the selected operation of copper, copper mine tailing II and copper mine tailing I merge regrinds; Copper mine tailing II and copper mine tailing I merge the grinding rate again of regrinding for-0.074mm content greater than 90%; Its copper chats I is carried out the process conditions that copper scans: add inhibitor carboxymethyl cellulose 200g/t, 5 minutes action time.Add collecting agent Z-200:7g/t, 3 minutes action time.
(5) the copper nickel bulk concentrate of copper in the step (3) and part of nickel is regrinded, carried out copper nickel after regrinding and separate.Obtain copper rough concentrate and nickel rough concentrate after the separation; The grinding rate again that copper nickel bulk concentrate is regrinded for-0.025mm content greater than 90%; Carrying out copper nickel separation processes condition after copper nickel bulk concentrate is regrinded is: add active carbon 250g/t and carry out reagent removal, 5 minutes action time.Adding inhibitor lime 450g/t(pH values of pulp is 12) and sodium hydrogensulfite 300g/t, 5 minutes action time.Add collecting agent butyl xanthate 10g/t, 3 minutes action time.Add blowing agent 2
#Oil 7g/t, 2 minutes action time.
(6) the copper rough concentrate in the step (5) is carried out selected copper concentrate and the copper chats III of once obtaining of copper, the nickel rough concentrate carries out copper and scans I and obtain nickel ore concentrate and nickel chats I.The copper nickel bulk concentrate that nickel chats I is returned last layer with copper chats III is regrinded; Its copper rough concentrate carries out copper dressing process condition: adding inhibitor lime 200g/t(pH values of pulp is 12) and sodium hydrogensulfite 100g/t, 5 minutes action time; The nickel rough concentrate carries out copper and scans the I process conditions and be: adding inhibitor lime 200g/t(pH values of pulp is about 12) and sodium hydrogensulfite 50g/t, 5 minutes action time; Add collecting agent butyl xanthate 7g/t, 3 minutes action time.
(7) nickel ore concentrate in the step (6) is carried out copper and scan II, obtain nickel ore concentrate I and nickel chats II, nickel chats II is returned the copper of last layer and is scanned the I operation; Its nickel ore concentrate carries out copper and scans the process conditions of II and be: adding inhibitor lime 100g/t(pH values of pulp is 12) and sodium hydrogensulfite 50g/t, 5 minutes action time.Add collecting agent butyl xanthate 3g/t, 3 minutes action time.
(8) the copper mine tailing after the regrinding in the step (4) is carried out nickel and roughly select, obtain nickel rough concentrate and nickel mine tailing.The nickel rough concentrate carries out nickel selected three times, obtains nickel ore concentrate II and three selected chats of nickel, and three selected chats of nickel return last layer respectively in proper order.The nickel mine tailing carries out nickel to be scanned three times, obtains mine tailing and three nickel are scanned chats, three nickel scan chats respectively order return last layer; Its copper mine tailing carries out the process conditions that nickel roughly selects: add activator copper sulphate 400g/t, be 5 minutes action time.Add collecting agent butyl ammonium aerofloat 140g/t and Mac-12
#14g/t, 3 minutes action time.Add blowing agent 2
#Oil 14g/t, 2 minutes action time; The nickel rough concentrate carries out the selected three times process conditions of nickel: selected adding inhibitor carboxymethyl cellulose 300g/t for the first time, 5 minutes action time.Selected adding inhibitor carboxymethyl cellulose 200g/t for the second time, 5 minutes action time.Selected for the third time adding inhibitor carboxymethyl cellulose 100g/t, 5 minutes action time; The nickel rougher tailings carries out nickel and scans three times process conditions and be: scan for the first time and add activator copper sulphate 130g/t, be 5 minutes action time.Add collecting agent butyl ammonium aerofloat 50g/t and Mac-12
#7g/t, 3 minutes action time.Scan for the second time adding activator copper sulphate 40g/t, be 5 minutes action time.Add collecting agent butyl ammonium aerofloat 20g/t and Mac-12
#4g/t, 3 minutes action time.Scan adding activator copper sulphate 15g/t for the third time, be 5 minutes action time.Add collecting agent butyl ammonium aerofloat 10g/t and Mac-12
#2g/t, 3～4 minutes action time.Simultaneously the chats that obtains of triple cleaning and scanning for three times all order turn back to the last layer operation.
The closed circuit sorting index that adopts copper nickel iso flotability flotation technological process of the present invention to obtain sees Table 3:
Table 3:
As seen from Table 3: the low-grade fine-grained disseminated grain copper nickel sulfide mineral of this complexity stone is adopted copper nickel iso flotability flotation of the present invention technological process carrying out copper nickel FLOTATION SEPARATION, the single copper that can obtain, nickel essence, and concentrate grade is higher, concentrate quality is better, copper, nickel recovery are higher, the separation of copper nickel is easier to, and simple to operate, controllability is strong.
Hold within not being described in detail in this specification and be the known prior art of this area professional and technical personnel.
Claims (9)
1. the beneficiation method of a copper nickel is characterized in that the step of its ore dressing process comprises:
(1) copper nickel raw ore is carried out levigate, desliming;
(2) raw ore after the desliming carries out copper mineral flotation, the mixed copper rough concentrate and the copper mine tailing I of the nickel mineral that obtain copper mineral and part adhesion, easily floats;
(3) it is selected that the mixed copper rough concentrate that step (2) is obtained carries out copper, obtains the copper nickel bulk concentrate and the copper chats I of copper and part of nickel;
(4) the copper chats I in the step (3) is carried out copper and scan, obtain copper chats II and copper mine tailing II; Copper chats II return last layer the selected operation of copper, copper mine tailing II and copper mine tailing I merge regrinds;
(5) the copper nickel bulk concentrate of copper in the step (3) and part of nickel is regrinded, carried out copper nickel after regrinding and separate; Obtain copper rough concentrate and nickel rough concentrate after the separation;
(6) the copper rough concentrate in the step (5) is carried out selected copper concentrate and the copper chats III of once obtaining of copper, the nickel rough concentrate carries out copper and scans I and obtain nickel ore concentrate and nickel chats I; The copper nickel bulk concentrate that nickel chats I is returned last layer with copper chats III is regrinded;
(7) nickel ore concentrate in the step (6) is carried out copper and scan II, obtain nickel ore concentrate I and nickel chats II, nickel chats II is returned the copper of last layer and is scanned the I operation;
(8) the copper mine tailing after the regrinding in the step (4) is carried out nickel and roughly select, obtain nickel rough concentrate and nickel mine tailing; The nickel rough concentrate carries out nickel selected three times, obtains nickel ore concentrate II and three selected chats of nickel, and three selected chats of nickel return last layer respectively in proper order; The nickel mine tailing carries out nickel to be scanned three times, obtains mine tailing and three nickel are scanned chats, three nickel scan chats respectively order return last layer.
2. the beneficiation method of a kind of copper nickel according to claim 1, it is characterized in that in levigate in the described step (1), the desliming process mog for-0.074mm greater than 83%; The process conditions of desliming process are: add blowing agent 2
#Oil 14g/t, be 2～4 minutes action time; In the step (4) copper mine tailing II merge the grinding rate again of regrinding with copper mine tailing I and be-0.074mm content is greater than 95%.
3. the beneficiation method of a kind of copper nickel according to claim 1 is characterized in that the process conditions that raw ore in the described step (2) carries out the copper mineral flotation process are: add collecting agent Z-200:21g/t, 3～4 minutes action time.Add blowing agent 2
#Oil 14g/t, be 2～4 minutes action time.
4. the beneficiation method of a kind of copper nickel according to claim 1, it is characterized in that mixed copper rough concentrate in the described step (3) carries out the selected process conditions of copper and is: add inhibitor carboxymethyl cellulose 400g/t, be 4～6 minutes action time.
5. the beneficiation method of a kind of copper nickel according to claim 1 is characterized in that copper chats I in the described step (4) carries out the process conditions that copper scans and be: add inhibitor carboxymethyl cellulose 150g/t, 5 minutes action time; Add collecting agent Z-200:7g/t, 3～4 minutes action time.
6. the beneficiation method of a kind of copper nickel according to claim 1 is characterized in that the copper nickel bulk concentrate in the described step (5) is regrinded, again grinding rate be-0.025mm content is greater than 95%; Carrying out copper nickel separation processes condition after copper nickel bulk concentrate is regrinded is: add the medicament active carbon 250g/t of reagent removal, 5～7 minutes action time; Add inhibitor lime 350g/t and sodium hydrogensulfite 200g/t, 5～7 minutes action time.Add collecting agent butyl xanthate 20g/t, 3～4 minutes action time.Add blowing agent 2
#Oil 7g/t, 2～4 minutes action time.
7. the beneficiation method of a kind of copper nickel according to claim 1 is characterized in that the middle copper rough concentrate of described step (6) carries out copper dressing process condition and is: add inhibitor lime 100g/t and sodium hydrogensulfite 50g/t, 5～7 minutes action time; The nickel rough concentrate carries out copper and scans the I process conditions and be: add inhibitor lime 150g/t and sodium hydrogensulfite 70g/t, 5～7 minutes action time. Add collecting agent butyl xanthate 7g/t, 3～4 minutes action time.
8. the beneficiation method of a kind of copper nickel according to claim 1, it is characterized in that nickel ore concentrate in the described step (7) carries out copper and scans the process conditions of II and be: add inhibitor lime 50g/t and sodium hydrogensulfite 20g/t, 5～7 minutes action time; Add collecting agent butyl xanthate 3g/t, 3～4 minutes action time.
9. the beneficiation method of a kind of copper nickel according to claim 1, it is characterized in that copper mine tailing in the described step (8) carries out the process conditions that nickel roughly selects and is: add activator sulfuric acid 8000g/t and copper sulphate 500g/t, be 5～7 minutes action time; Add collecting agent butyl ammonium aerofloat 100g/t and Mac-12
#14g/t, 3～4 minutes action time; Add blowing agent 2
#Oil 14g/t, 2～4 minutes action time; The nickel rough concentrate carries out the selected three times process conditions of nickel: selected adding inhibitor carboxymethyl cellulose 450g/t for the first time, 5～7 minutes action time; Selected adding inhibitor carboxymethyl cellulose 300g/t for the second time, 5～7 minutes action time.Selected for the third time adding inhibitor carboxymethyl cellulose 150g/t, 5～7 minutes action time; The nickel rougher tailings carries out nickel and scans three times process conditions and be: scan for the first time and add activator sulfuric acid 2000g/t and copper sulphate 150g/t, be 5～7 minutes action time.Add collecting agent butyl ammonium aerofloat 30g/t and Mac-12
#7g/t, 3～4 minutes action time; Scan for the second time adding activator sulfuric acid 2000g/t and copper sulphate 50g/t, be 5～7 minutes action time; Add collecting agent butyl ammonium aerofloat 20g/t and Mac-12
#4g/t, 3～4 minutes action time; Scan adding activator sulfuric acid 1000g/t and copper sulphate 15g/t for the third time, be 5～7 minutes action time; Add collecting agent butyl ammonium aerofloat 10g/t and Mac-12
#2g/t, 3～4 minutes action time; Simultaneously the chats that obtains of triple cleaning and scanning for three times all order turn back to the last layer operation.
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