CN110052327B - Method for sorting zinc oxide-containing high-sulfur high-copper zinc concentrate - Google Patents
Method for sorting zinc oxide-containing high-sulfur high-copper zinc concentrate Download PDFInfo
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- CN110052327B CN110052327B CN201810399890.6A CN201810399890A CN110052327B CN 110052327 B CN110052327 B CN 110052327B CN 201810399890 A CN201810399890 A CN 201810399890A CN 110052327 B CN110052327 B CN 110052327B
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- 239000012141 concentrate Substances 0.000 title claims abstract description 155
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 title claims abstract description 62
- 229910052717 sulfur Inorganic materials 0.000 title claims abstract description 42
- 239000011593 sulfur Substances 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000011787 zinc oxide Substances 0.000 title claims abstract description 31
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 332
- 239000010949 copper Substances 0.000 claims abstract description 332
- 229910052802 copper Inorganic materials 0.000 claims abstract description 332
- 230000002000 scavenging effect Effects 0.000 claims abstract description 142
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 59
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 59
- 239000011701 zinc Substances 0.000 claims abstract description 59
- 238000000926 separation method Methods 0.000 claims abstract description 34
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- BWFPGXWASODCHM-UHFFFAOYSA-N copper monosulfide Chemical compound [Cu]=S BWFPGXWASODCHM-UHFFFAOYSA-N 0.000 claims abstract description 14
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 13
- 229910052683 pyrite Inorganic materials 0.000 claims abstract description 12
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000011028 pyrite Substances 0.000 claims abstract description 12
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 9
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims description 38
- 238000003756 stirring Methods 0.000 claims description 27
- 239000003112 inhibitor Substances 0.000 claims description 20
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims description 20
- 229960001763 zinc sulfate Drugs 0.000 claims description 20
- 229910000368 zinc sulfate Inorganic materials 0.000 claims description 20
- 239000003795 chemical substances by application Substances 0.000 claims description 19
- 235000010265 sodium sulphite Nutrition 0.000 claims description 19
- 239000003814 drug Substances 0.000 claims description 17
- 239000002562 thickening agent Substances 0.000 claims description 14
- ZOOODBUHSVUZEM-UHFFFAOYSA-N ethoxymethanedithioic acid Chemical compound CCOC(S)=S ZOOODBUHSVUZEM-UHFFFAOYSA-N 0.000 claims description 13
- 238000000227 grinding Methods 0.000 claims description 13
- 238000004062 sedimentation Methods 0.000 claims description 13
- 238000001556 precipitation Methods 0.000 claims description 11
- 229940079593 drug Drugs 0.000 claims description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 8
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 8
- 239000004571 lime Substances 0.000 claims description 8
- 229910052979 sodium sulfide Inorganic materials 0.000 claims description 7
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 5
- 239000000575 pesticide Substances 0.000 claims description 5
- 235000019353 potassium silicate Nutrition 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- 239000002893 slag Substances 0.000 claims description 5
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical group [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- HQABUPZFAYXKJW-UHFFFAOYSA-O butylazanium Chemical compound CCCC[NH3+] HQABUPZFAYXKJW-UHFFFAOYSA-O 0.000 claims description 4
- 239000002270 dispersing agent Substances 0.000 claims description 4
- 210000003574 melanophore Anatomy 0.000 claims description 4
- 230000008719 thickening Effects 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 9
- 239000011707 mineral Substances 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 230000001737 promoting effect Effects 0.000 abstract description 2
- 238000005188 flotation Methods 0.000 description 62
- TVZPLCNGKSPOJA-UHFFFAOYSA-N copper zinc Chemical compound [Cu].[Zn] TVZPLCNGKSPOJA-UHFFFAOYSA-N 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 239000000049 pigment Substances 0.000 description 5
- 229910001656 zinc mineral Inorganic materials 0.000 description 5
- YNTQKXBRXYIAHM-UHFFFAOYSA-N azanium;butanoate Chemical compound [NH4+].CCCC([O-])=O YNTQKXBRXYIAHM-UHFFFAOYSA-N 0.000 description 4
- 238000004064 recycling Methods 0.000 description 4
- 230000002829 reductive effect Effects 0.000 description 4
- DSBUAQPRJNCZAU-UHFFFAOYSA-N azane;butan-1-ol Chemical compound N.CCCCO DSBUAQPRJNCZAU-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 229910001779 copper mineral Inorganic materials 0.000 description 3
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 description 2
- FENQZYRPJMQVRW-UHFFFAOYSA-N [Cu]S[Zn] Chemical compound [Cu]S[Zn] FENQZYRPJMQVRW-UHFFFAOYSA-N 0.000 description 2
- 229910001431 copper ion Inorganic materials 0.000 description 2
- 238000010494 dissociation reaction Methods 0.000 description 2
- 230000005593 dissociations Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- WGPCGCOKHWGKJJ-UHFFFAOYSA-N sulfanylidenezinc Chemical compound [Zn]=S WGPCGCOKHWGKJJ-UHFFFAOYSA-N 0.000 description 2
- 229910052984 zinc sulfide Inorganic materials 0.000 description 2
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000002687 intercalation Effects 0.000 description 1
- 238000009830 intercalation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229910052952 pyrrhotite Inorganic materials 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 229910052569 sulfide mineral Inorganic materials 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
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- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a sorting method of zinc oxide-containing high-sulfur high-copper zinc concentrate, which comprises the steps of carrying out grading branch reagent removal on the zinc oxide-containing high-sulfur high-copper zinc concentrate, and then carrying out copper and zinc sorting to obtain copper concentrate containing more than 25% of copper and zinc concentrate containing more than 50% of zinc; carrying out copper-sulfur separation on the middlings in the operation of copper concentration I and copper scavenging I to obtain pyrite containing over 45% of sulfur; adding sodium carbonate into the zinc concentrate dense overflow water to open the way and settle so as to recover zinc. The sorting method has the advantages of advanced technology, good sorting effect, strong adaptability, economy and environmental protection; the method has important significance for saving energy, reducing consumption, efficiently utilizing resources, improving economic benefits and promoting sustainable development of mineral resources of mine enterprises or metallurgical enterprises.
Description
The technical field is as follows:
the invention relates to a concentrate sorting method, in particular to a sorting method of zinc oxide-containing high-sulfur high-copper zinc concentrate.
Background art:
the paraffinite in the copper-zinc-sulfur minerals is difficult to float than the copper minerals, and a preferential flotation process for inhibiting zinc and copper floating is generally adopted, however, the copper-zinc separation is restricted by the adverse factors of complex intercalation relationship of the copper-zinc minerals, free copper ions in solution, residual flotation reagents, different degrees of oxidation and the like, particularly the separation of zinc oxide-containing high-sulfur high-copper-zinc concentrate. The separation difficulty is mainly shown in that: 1) copper-zinc-sulfur minerals are densely symbiotic with each other, the embedding granularity is fine, deep dissociation can be achieved only by fine grinding, but the specific surface area of ore particles after fine grinding is increased, a hydrophobic film is formed on the surface of zinc blende by generated secondary copper ions and soluble heavy metal salts, and partial zinc blende is activated, so that the floatability difference among the copper-zinc minerals is reduced; 2) the existence of a large amount of minerals such as pyrite, pyrrhotite and the like and slime in the minerals is also a key factor influencing the separation of copper and zinc, and the flotation effect of zinc concentrate is restricted; 3) the copper minerals are various in types and have large difference in floatability, and the floatability of the sulfide minerals is staggered and overlapped and the pyrite is oxidized in an accelerated manner, so that great difficulty is brought to flotation separation; 4) the residual flotation reagent in the solution environment is the largest factor influencing the separation of the copper-zinc bulk concentrates, and the residual flotation reagent is adsorbed on the bare surface of the copper-zinc mineral to the greatest extent, so that the flotation critical point of the copper mineral is increased, and the mutual containing strength of the copper concentrate and the zinc concentrate is increased. Even if the separation is deeply dissociated again, the residual agent in a floating state is adsorbed on the surface of the newly dissociated copper-zinc minerals as much as possible in the ore grinding stage, and the separation effect of the bulk concentrate is influenced. If the zinc oxide-containing high-sulfur high-copper zinc concentrate cannot be effectively separated, the concentrate can only be used as a mixture for ore matching, so that the utilization coefficient of zinc is reduced, metals such as copper, iron and the like cannot be effectively utilized, the operation cost in the zinc metal smelting process is also increased, and the resource recycling or disposal cost of waste residues is also increased.
The invention content is as follows:
the invention aims to provide the method for sorting the zinc oxide-containing high-sulfur high-copper zinc concentrate, which has the advantages of advanced technology, good sorting effect, strong adaptability, economy and environmental protection.
The purpose of the invention is implemented by the following technical scheme: a separation method of zinc oxide-containing high-sulfur high-copper zinc concentrate is provided, after grading branch reagent removal is carried out on the zinc oxide-containing high-sulfur high-copper zinc concentrate, copper concentrate containing more than 25% of copper and zinc concentrate containing more than 50% of zinc are obtained through copper and zinc separation; carrying out copper-sulfur separation on the middlings in the operation of copper concentration I and copper scavenging I to obtain pyrite containing over 45% of sulfur; adding sodium carbonate into the zinc concentrate dense overflow water to open the way and settle so as to recover zinc.
Specifically, the method for sorting the zinc oxide-containing high-sulfur high-copper zinc concentrate comprises the following steps: 1) grading, branching and removing the medicines; 2) roughing copper; 3) copper fine selection; 4) copper scavenging; 5) separating copper and sulfur; 6) zinc is recovered by open circuit sedimentation; wherein,
1) grading, branching and removing the drug: adding water into the raw materials according to the liquid-solid ratio of 1:1-2:3 according to the dry weight of each ton of raw ore, stirring, fully stirring, grading by using a hydrocyclone, adding 800-1000 g/t of a reagent I into the graded bottom flow, grinding until the grinding fineness is-0.038 mm and accounts for 60-65%; adding 500-800 g/t of dispersing agent and 300-500 g/t of pesticide removing agent II into the graded overflow, stirring, and mixing with mill ore discharge to prepare a mixed sample;
2) copper roughing: sequentially adding 4000-5000 g/t of combined inhibitor and 120-150 g/t of collecting agent into the mixed sample, and performing copper roughing to obtain copper roughing concentrate and copper roughing tailings;
3) copper fine selection: carrying out at least one fine concentration on the copper roughing concentrate to obtain a copper concentrate and copper fine concentration I tailings;
4) copper scavenging: carrying out scavenging on the copper roughing tailings at least once to obtain copper scavenging I concentrate and zinc concentrate;
5) and (3) copper and sulfur separation: after combining the tailings in the first copper concentration step and the concentrates in the first copper scavenging step, adding 1000-1500 g/t of a regulator, adjusting the pH value to 8-9, carrying out copper-sulfur separation to obtain copper middlings and pyrite, and returning the copper middlings to the copper roughing operation in the step 2);
6) and (3) open circuit sedimentation for recovering zinc: and (3) thickening the copper scavenging tailings after entering a thickener to obtain zinc concentrate, overflowing the thickener to add 500-600 g/t of sodium carbonate for zinc precipitation, and merging the precipitation slag into the zinc concentrate.
Specifically, the copper concentration in the step 3) comprises the following steps: a) copper fine selection I; b) copper fine selection II; c) copper fine selection III; wherein,
a) copper selection I: adding 4000-5000 g/t of a combined inhibitor into the copper roughing concentrate to carry out copper roughing I to obtain copper roughing I concentrate and copper roughing I tailings;
b) copper concentration II: adding 2000-2400 g/t of combined inhibitor into the copper concentration I concentrate to perform copper concentration II to obtain copper concentration II concentrate and copper concentration II tailings, and returning the copper concentration II tailings to the copper concentration I operation;
c) copper concentration III: and adding 100-200 g/t of a regulator into the copper concentration II concentrate to carry out copper concentration III to obtain copper concentration III concentrate, namely the copper concentrate and copper concentration III tailings, and returning the copper concentration III tailings to the copper concentration II operation.
Specifically, the copper scavenging in the step 4) comprises the following steps: d) copper scavenging I; e) copper scavenging II; f) copper scavenging III; wherein,
d) copper scavenging I: sequentially adding 2000-2400 g/t of combined inhibitor and 60-75 g/t of collecting agent to the copper roughing tailings, and performing copper scavenging I to obtain concentrate and tailings;
e) and (4) copper scavenging II: sequentially adding 1000-1200 g/t of combined inhibitor and 30-37 g/t of collecting agent to the tailings of the first copper scavenging section, performing second copper scavenging to obtain concentrates of the second copper scavenging section and the tailings of the second copper scavenging section, and returning the concentrates of the second copper scavenging section to the operation of the first copper scavenging section;
f) copper scavenging III: and (3) carrying out copper scavenging III without adding any reagent to the copper scavenging II concentrate to obtain copper scavenging III concentrate and copper scavenging tailings, and returning the copper scavenging III concentrate to the copper scavenging II operation.
Specifically, the combined inhibitor comprises sodium sulfite and zinc sulfate, wherein the mass ratio of the sodium sulfite to the zinc sulfate is 1: 1.
Specifically, the collecting agent comprises an ethyl xanthate and a butylammonium melanophore, and the mass ratio of the ethyl xanthate to the butylammonium melanophore is 2: 1.
Specifically, the chemical removing agent I is activated carbon.
Specifically, the chemical removing agent II is sodium sulfide.
Specifically, the dispersing agent is water glass.
Specifically, the regulator is lime.
The invention has the advantages that:
1) the hydrocyclone is classified in advance, and the combination process of coarse fraction regrinding and fine fraction stirring can effectively remove the medicament adsorbed on the surface of the material and strengthen the medicament removal effect. The material is stirred and subjected to hydrocyclone, and the aim of removing the pesticide in advance is fulfilled by barrel wall scrubbing and spiral grading friction; coarse fraction materials are reground to realize depth dissociation of the intergrowth to generate a fresh mineral surface, so that the medicament is desorbed from the mineral surface, and meanwhile, the activated carbon is added to adsorb 'free medicament' in the ore pulp in time; the specific surface area of the fine-grained material is large, and the collecting agent film on the surface of the mineral is desorbed by adding sodium sulfide to directly stir and remove the medicine, so that the medicine removal is thorough. After the branch treatment, the combination can effectively weaken the influence of the surplus medicament sodium sulfide on the selected materials. The material branch treatment scheme not only strengthens the effect of removing the pesticide, but also optimizes the granularity composition, and greatly improves the copper-zinc separation effect.
2) The ore property is followed according to different materials, and middling branch sorting and weak base environment fine sorting are arranged. The copper concentration I and the copper scavenging I are subjected to strong inhibition flotation, middlings in the two operations are rich in pyrite, and the pyrite can be efficiently recovered through copper-sulfur separation, so that the impurity content in copper-zinc concentrate is reduced; and the copper concentration III operation is performed through alkalescent flotation, so that the quality of copper concentrate can be effectively improved, and the influence of alkalinity on the whole flotation system is reduced to the maximum extent.
3) Most of zinc oxide meeting water can be converted into zinc sulfate, if the zinc oxide meeting water is not treated, the concentration of zinc ions in a flotation system can rise violently along with the circulation of production water, and then zinc minerals are over-inhibited, so that the flotation index is influenced. The method has the advantages that the dense overflow water of the zinc concentrate is treated by adding the sodium carbonate through an open circuit, the process is simple, the zinc ion balance of a flotation system can be effectively controlled, the water-soluble zinc can be recovered to the maximum extent, and the sustainable and stable operation of the flotation system is ensured.
4) The sorting method has the advantages of advanced technology, good sorting effect, strong adaptability, economy and environmental protection; the method has important significance for saving energy, reducing consumption, efficiently utilizing resources, improving economic benefits and promoting sustainable development of mineral resources of mine enterprises or metallurgical enterprises.
Description of the drawings:
fig. 1 is a schematic diagram of a sorting system for zinc oxide-containing high-sulfur high-copper zinc concentrate.
Fig. 2 is a flow chart of a sorting process of zinc oxide-containing high-sulfur high-copper zinc concentrate.
The device comprises a first stirring barrel 1, a hydrocyclone 2, a second stirring barrel 3, a mill 4, a roughing flotation column 5, a thickener 6, a zinc precipitation tank 7, a copper-sulfur separation flotation machine 8, a primary concentration flotation column 9, a secondary concentration flotation column 10, a tertiary concentration flotation column 11, a primary scavenging flotation machine 12, a secondary scavenging flotation machine 13 and a tertiary scavenging flotation machine 14.
The specific implementation mode is as follows:
example 1: as shown in fig. 1, a zinc oxide-containing high-sulfur high-copper zinc concentrate sorting system comprises a first stirring barrel 1, a hydrocyclone 2, a second stirring barrel 3, a mill 4, a roughing flotation column 5, a concentration flotation device, a scavenging flotation device, a thickener 6, a zinc precipitation tank 7 and a copper-sulfur separation flotation machine 8; the concentration flotation device comprises a primary concentration flotation column 9, a secondary concentration flotation column 10 and a tertiary concentration flotation column 11; the scavenging flotation device comprises a primary scavenging flotation machine 12, a secondary scavenging flotation machine 13 and a tertiary scavenging flotation machine 14;
the discharge hole of the first stirring barrel 1 is connected with the feed inlet of the hydrocyclone 2; an overflow outlet of the hydrocyclone 2 is connected with an inlet of the second stirring barrel 3, and an underflow outlet of the hydrocyclone 2 is connected with an inlet of the mill 4; the outlet of the second stirring barrel 3 and the outlet of the mill 4 are both connected with the inlet of the roughing flotation column 5; the copper roughing concentrate outlet of the roughing flotation column 5 is connected with the copper roughing concentrate inlet of the primary concentration flotation column 9, the copper concentration I concentrate outlet of the primary concentration flotation column 9 is connected with the inlet of the secondary concentration flotation column 10, and the copper concentration I tailing outlet of the primary concentration flotation column 9 is connected with the inlet of the copper-sulfur separation flotation machine 8; the copper concentration II concentrate outlet of the secondary concentration flotation column 10 is connected with the inlet of the tertiary concentration flotation column 11, and the copper concentration II tailing outlet of the secondary concentration flotation column 10 is connected with the copper roughing concentrate inlet of the primary concentration flotation column 9; the copper concentration III tailing outlet of the third concentration flotation column 11 is connected with the inlet of the second concentration flotation column 10.
A copper roughing tailing outlet of the roughing flotation column 5 is connected with a copper roughing tailing inlet of a primary scavenging flotation machine 12, a copper scavenging I concentrate outlet of the primary scavenging flotation machine 12 is connected with an inlet of a copper-sulfur separation flotation machine 8, and a copper scavenging I tailing outlet of the primary scavenging flotation machine 12 is connected with an inlet of a secondary scavenging flotation machine 12; the copper scavenging II concentrate outlet of the secondary scavenging flotation machine 13 is connected with the copper roughing tailing inlet of the primary scavenging flotation machine 12, the copper scavenging II tailing outlet of the secondary scavenging flotation machine 13 is connected with the inlet of the tertiary scavenging flotation machine 14, the copper scavenging III concentrate outlet of the tertiary scavenging flotation machine 14 is connected with the inlet of the secondary scavenging flotation machine 13, the copper scavenging tailing outlet of the tertiary scavenging flotation machine 14 is connected with the inlet of the thickener 6, and the overflow port of the thickener 6 is connected with the inlet of the zinc precipitation tank 7.
The copper middling outlet of the copper-sulfur separation flotation machine 8 is connected with the inlet of the roughing flotation column 5.
Examples 2-4 all use the system of example 1 to accomplish the separation of zinc oxide-containing high-sulfur high-copper zinc concentrate.
Example 2: as shown in fig. 2, a method for sorting zinc oxide-containing high-sulfur high-copper zinc concentrate includes the following steps: 1) grading, branching and removing the medicines; 2) roughing copper; 3) copper fine selection; 4) copper scavenging; 5) separating copper and sulfur; 6) zinc is recovered by open circuit sedimentation; wherein,
1) grading, branching and removing the drug: adding water into the raw materials according to the liquid-solid ratio of 1:1 according to the dry weight of each ton of raw ore, stirring, fully stirring, classifying by a hydrocyclone, adding 800g/t of active carbon into classification bottom flow for grinding until the grinding fineness is-0.038 mm and accounts for 60%, adding 500g/t of water glass and 300g/t of sodium sulfide into classification overflow for stirring, and mixing with mill discharge after stirring to prepare a mixed sample;
2) copper roughing: the combined inhibitor is added into the mixed sample in sequence: 2000g/t of sodium sulfite and 2000g/t of zinc sulfate, and a collecting agent: 80g/t of ethyl xanthate and 40g/t of ammonium nitrate black powder, and performing copper roughing to obtain copper roughing concentrate and copper roughing tailings;
3) copper fine selection:
a) copper selection I: adding 2000g/t of sodium sulfite and 2000g/t of zinc sulfate as combined inhibitors into the copper roughing concentrate to carry out copper roughing I so as to obtain copper roughing I concentrate and copper roughing I tailings;
b) copper concentration II: adding 1000g/t of sodium sulfite and 1000g/t of zinc sulfate into the concentrate I to carry out copper concentration II to obtain concentrate II and tailings II, and returning the tailings II to the operation of the copper concentration I;
c) copper concentration III: and adding 100g/t of regulator lime into the copper concentration II concentrate to carry out copper concentration III so as to obtain copper concentration III concentrate (namely copper concentrate) and copper concentration III tailings, and returning the copper concentration III tailings to the copper concentration II operation.
4) Copper scavenging:
d) copper scavenging I: sequentially adding 1000g/t of sodium sulfite, 1000g/t of zinc sulfate, 40g/t of ethyl xanthate and 20g/t of ammonium butyrate black pigment as combined inhibitors to the copper roughing tailings, and performing copper scavenging I to obtain concentrate and tailings;
e) and (4) copper scavenging II: sequentially adding 500g/t of sodium sulfite, 500g/t of zinc sulfate, 20g/t of ethyl xanthate and 10g/t of ammonium butoxide as collecting agents into the tailings of the copper scavenging I, performing copper scavenging II to obtain concentrate of the copper scavenging II and tailings of the copper scavenging II, and returning the concentrate of the copper scavenging II to the operation of the copper scavenging I;
f) copper scavenging III: and (3) carrying out copper scavenging III without adding any reagent to the copper scavenging II concentrate to obtain copper scavenging III concentrate and copper scavenging tailings (namely zinc concentrate), and returning the copper scavenging III concentrate to the copper scavenging II operation.
5) And (3) copper and sulfur separation: and (3) combining the tailings in the copper concentration I and the concentrates in the copper scavenging I, adding 1000g/t of regulator lime, adjusting the pH value to 8, carrying out copper-sulfur separation to obtain copper middlings and pyrite, and returning the copper middlings to the copper roughing operation in the step 2).
6) And (3) open circuit sedimentation for recovering zinc: and (3) thickening the copper scavenging tailings after entering a thickener to obtain zinc concentrate, overflowing the thickener to add 500g/t of sodium carbonate for zinc precipitation, and merging the precipitation slag into the zinc concentrate.
And directly recycling the concentrate dense overflow water and the zinc sedimentation overflow water.
Example 3: as shown in fig. 2, a method for sorting zinc oxide-containing high-sulfur high-copper zinc concentrate includes the following steps: 1) grading, branching and removing the medicines; 2) roughing copper; 3) copper fine selection; 4) copper scavenging; 5) separating copper and sulfur; 6) zinc is recovered by open circuit sedimentation; wherein,
1) grading, branching and removing the drug: adding water into the raw materials according to the liquid-solid ratio of 2:3 according to the dry weight of each ton of raw ore, stirring, fully stirring, classifying by a hydrocyclone, adding 1000g/t of active carbon into classification bottom flow for grinding until the grinding fineness is-0.038 mm and accounts for 65%, adding 800g/t of water glass and 500g/t of sodium sulfide into classification overflow for stirring, and mixing with mill discharge after stirring to prepare a mixed sample;
2) copper roughing: adding 2500g/t of sodium sulfite, 2500g/t of zinc sulfate and 100g/t of ethyl xanthate serving as a collecting agent and 50g/t of ammonium butyrate black pigment into the mixed sample in sequence, and performing copper roughing to obtain copper roughing concentrate and copper roughing tailings;
3) copper fine selection:
a) copper selection I: adding 2500g/t of sodium sulfite and 2500g/t of zinc sulfate as combined inhibitors into the copper roughing concentrate to carry out copper roughing I so as to obtain concentrate I and tailings I;
b) copper concentration II: adding 1200g/t of sodium sulfite and 1200g/t of zinc sulfate into the concentrate I of copper concentration to carry out copper concentration II to obtain concentrate II of copper concentration and tailings II of copper concentration, and returning the tailings II of copper concentration to the operation I of copper concentration;
c) copper concentration III: and adding 200g/t of regulator lime into the copper concentration II concentrate to carry out copper concentration III so as to obtain copper concentration III concentrate (namely copper concentrate) and copper concentration III tailings, and returning the copper concentration III tailings to the copper concentration II operation.
4) Copper scavenging:
d) copper scavenging I: sequentially adding 1200g/t of sodium sulfite, 1200g/t of zinc sulfate and 50g/t of ethyl xanthate serving as a collecting agent and 25g/t of ammonium butyrate black pigment into the copper roughing tailings, and performing copper scavenging I to obtain concentrate and tailings of the copper scavenging I;
e) and (4) copper scavenging II: sequentially adding 600g/t of sodium sulfite, 600g/t of zinc sulfate, 25g/t of ethyl xanthate and 12.5g/t of ammonium butoxide as combined inhibitors to the tailings of the copper scavenging I, performing copper scavenging II to obtain concentrate of the copper scavenging II and tailings of the copper scavenging II, and returning the concentrate of the copper scavenging II to the operation of the copper scavenging I;
f) copper scavenging III: and (3) carrying out copper scavenging III without adding any reagent to the copper scavenging II concentrate to obtain copper scavenging III concentrate and copper scavenging tailings (namely zinc concentrate), and returning the copper scavenging III concentrate to the copper scavenging II operation.
5) And (3) copper and sulfur separation: and (3) combining the tailings in the copper concentration I and the concentrates in the copper scavenging I, adding 1500g/t of regulator lime, adjusting the pH to 9, carrying out copper-sulfur separation to obtain copper middlings and pyrite, and returning the copper middlings to the copper roughing operation in the step 2).
6) And (3) open circuit sedimentation for recovering zinc: after entering a thickener, copper scavenging tailings are thickened to obtain zinc concentrate, the thickener overflows and is added with 600g/t of sodium carbonate to precipitate zinc, and precipitation slag is merged into the zinc concentrate.
And directly recycling the concentrate dense overflow water and the zinc sedimentation overflow water.
Example 4: as shown in fig. 2, a method for sorting zinc oxide-containing high-sulfur high-copper zinc concentrate includes the following steps: 1) grading, branching and removing the medicines; 2) roughing copper; 3) copper fine selection; 4) copper scavenging; 5) separating copper and sulfur; 6) zinc is recovered by open circuit sedimentation; wherein,
1) grading, branching and removing the drug: adding water into the raw materials according to a liquid-solid ratio of 9:11 according to the dry weight of each ton of raw ore, stirring, fully stirring, classifying by a hydrocyclone, adding 900g/t of active carbon into classification bottom flow for grinding until the grinding fineness is-0.038 mm and accounts for 63%, adding 650g/t of water glass and 400g/t of sodium sulfide into classification overflow for stirring, and mixing with mill discharge after stirring to prepare a mixed sample;
2) copper roughing: sequentially adding 2200g/t of sodium sulfite, 2200g/t of zinc sulfate and 90g/t of ethyl xanthate serving as a collecting agent and 45g/t of ammonium butyl black pigment into the mixed sample, and performing copper roughing to obtain copper roughing concentrate and copper roughing tailings;
3) copper fine selection:
a) copper selection I: adding 2200g/t sodium sulfite and 2200g/t zinc sulfate which are combined inhibitors into the copper roughing concentrate to carry out copper roughing I so as to obtain copper roughing I concentrate and copper roughing I tailings;
b) copper concentration II: adding 1100g/t of sodium sulfite and 1100g/t of zinc sulfate as combined inhibitors into the concentrate I of copper concentration to carry out copper concentration II to obtain concentrate II of copper concentration and tailings II of copper concentration, and returning the tailings II of copper concentration to the operation I of copper concentration;
c) copper concentration III: and adding 150g/t of regulator lime into the copper concentration II concentrate to carry out copper concentration III so as to obtain copper concentration III concentrate (namely copper concentrate) and copper concentration III tailings, and returning the copper concentration III tailings to the copper concentration II operation.
4) Copper scavenging:
d) copper scavenging I: sequentially adding 1100g/t of sodium sulfite, 1100g/t of zinc sulfate, 45g/t of ethyl xanthate and 22.5g/t of ammonium butyrate black pigment into the copper roughing tailings, and performing copper scavenging I to obtain concentrate and tailings;
e) and (4) copper scavenging II: the method comprises the following steps of sequentially adding 550g/t of sodium sulfite, 550g/t of zinc sulfate, 22g/t of ethyl xanthate and 11g/t of ammonium butoxide as combined inhibitors to tailings of copper scavenging I, carrying out copper scavenging II to obtain concentrate of copper scavenging II and tailings of copper scavenging II, and returning the concentrate of copper scavenging II to the operation of copper scavenging I;
f) copper scavenging III: and (3) carrying out copper scavenging III without adding any reagent to the copper scavenging II concentrate to obtain copper scavenging III concentrate and copper scavenging tailings (namely zinc concentrate), and returning the copper scavenging III concentrate to the copper scavenging II operation.
5) And (3) copper and sulfur separation: and (3) combining the tailings in the copper concentration I and the concentrates in the copper scavenging I, adding 1300g/t of regulator lime, adjusting the pH to 8.5, carrying out copper-sulfur separation to obtain copper middlings and pyrite, and returning the copper middlings to the copper roughing operation in the step 2).
6) And (3) open circuit sedimentation for recovering zinc: and (3) thickening the copper scavenging tailings after entering a thickener to obtain zinc concentrate, overflowing the thickener to add 550g/t of sodium carbonate to precipitate zinc, and merging the precipitation slag into the zinc concentrate.
And directly recycling the concentrate dense overflow water and the zinc sedimentation overflow water.
Example 5: sorting was carried out according to the method of examples 2-4 of the present invention, and the test results are shown in Table 1:
TABLE 1 results of sorting tests carried out according to the methods of examples 2 to 4 of the present invention
The test results in table 1 show that the process of the invention is advanced and can realize the high-efficiency separation of zinc oxide-containing high-sulfur high-copper zinc concentrate.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. A separation method of zinc oxide-containing high-sulfur high-copper zinc concentrate is characterized by comprising the following steps: after the zinc oxide-containing high-sulfur high-copper zinc concentrate is subjected to grading branch reagent removal, copper concentrate containing more than 25% of copper and zinc concentrate containing more than 50% of zinc are obtained through copper and zinc separation; carrying out copper-sulfur separation on the middlings in the operation of copper concentration I and copper scavenging I to obtain pyrite containing over 45% of sulfur; adding sodium carbonate into the zinc concentrate dense overflow water to open the way and settle so as to recover zinc;
the method specifically comprises the following steps: 1) grading, branching and removing the medicines; 2) roughing copper; 3) copper fine selection; 4) copper scavenging; 5) separating copper and sulfur; 6) zinc is recovered by open circuit sedimentation; wherein,
1) grading, branching and removing the drug: adding water into the raw materials according to the liquid-solid ratio of 1:1-2:3 according to the dry weight of each ton of raw ore, stirring, fully stirring, grading by using a hydrocyclone, adding 800-1000 g/t of a reagent I into the graded bottom flow, grinding until the grinding fineness is-0.038 mm and accounts for 60-65%; adding 500-800 g/t of dispersing agent and 300-500 g/t of pesticide removing agent II into the graded overflow, stirring, and mixing with mill ore discharge to prepare a mixed sample;
2) copper roughing: sequentially adding 4000-5000 g/t of combined inhibitor and 120-150 g/t of collecting agent into the mixed sample, and performing copper roughing to obtain copper roughing concentrate and copper roughing tailings;
3) copper fine selection: carrying out at least one fine concentration on the copper roughing concentrate to obtain a copper concentrate and copper fine concentration I tailings;
4) copper scavenging: carrying out scavenging on the copper roughing tailings at least once to obtain copper scavenging I concentrate and zinc concentrate;
5) and (3) copper and sulfur separation: after combining the tailings in the first copper concentration step and the concentrates in the first copper scavenging step, adding 1000-1500 g/t of a regulator, adjusting the pH value to 8-9, carrying out copper-sulfur separation to obtain copper middlings and pyrite, and returning the copper middlings to the copper roughing operation in the step 2);
6) and (3) open circuit sedimentation for recovering zinc: and (3) thickening the copper scavenging tailings after entering a thickener to obtain zinc concentrate, overflowing the thickener to add 500-600 g/t of sodium carbonate for zinc precipitation, and merging the precipitation slag into the zinc concentrate.
2. The method for sorting the zinc oxide-containing high-sulfur high-copper zinc concentrate according to claim 1, characterized in that: the step 3) copper concentration comprises the following steps: a) copper fine selection I; b) copper fine selection II; c) copper fine selection III; wherein,
a) copper selection I: adding 4000-5000 g/t of a combined inhibitor into the copper roughing concentrate to carry out copper roughing I to obtain copper roughing I concentrate and copper roughing I tailings;
b) copper concentration II: adding 2000-2400 g/t of combined inhibitor into the copper concentration I concentrate to perform copper concentration II to obtain copper concentration II concentrate and copper concentration II tailings, and returning the copper concentration II tailings to the copper concentration I operation;
c) copper concentration III: and adding 100-200 g/t of a regulator into the copper concentration II concentrate to carry out copper concentration III to obtain copper concentration III concentrate, namely the copper concentrate and copper concentration III tailings, and returning the copper concentration III tailings to the copper concentration II operation.
3. The method for sorting the zinc oxide-containing high-sulfur high-copper zinc concentrate according to claim 1, characterized in that: the copper scavenging in the step 4) comprises the following steps: d) copper scavenging I; e) copper scavenging II; f) copper scavenging III; wherein,
d) copper scavenging I: sequentially adding 2000-2400 g/t of combined inhibitor and 60-75 g/t of collecting agent to the copper roughing tailings, and performing copper scavenging I to obtain concentrate and tailings;
e) and (4) copper scavenging II: sequentially adding 1000-1200 g/t of combined inhibitor and 30-37 g/t of collecting agent to the tailings of the first copper scavenging section, performing second copper scavenging to obtain concentrates of the second copper scavenging section and the tailings of the second copper scavenging section, and returning the concentrates of the second copper scavenging section to the operation of the first copper scavenging section;
f) copper scavenging III: and (3) carrying out copper scavenging III without adding any reagent to the copper scavenging II concentrate to obtain copper scavenging III concentrate and copper scavenging tailings, and returning the copper scavenging III concentrate to the copper scavenging II operation.
4. The method for sorting the zinc oxide-containing high-sulfur high-copper zinc concentrate according to any one of claims 1 to 3, characterized in that: the combined inhibitor comprises sodium sulfite and zinc sulfate, wherein the mass ratio of the sodium sulfite to the zinc sulfate is 1: 1.
5. The method for sorting the zinc oxide-containing high-sulfur high-copper zinc concentrate according to claim 1 or 3, characterized in that: the collecting agent comprises an ethyl xanthate and a butylammonium melanophore, and the mass ratio of the ethyl xanthate to the butylammonium melanophore is 2: 1.
6. The method for sorting the zinc oxide-containing high-sulfur high-copper zinc concentrate according to claim 1, characterized in that: the pesticide removing agent I is activated carbon.
7. The method for sorting the zinc oxide-containing high-sulfur high-copper zinc concentrate according to claim 1, characterized in that: the chemical removing agent II is sodium sulfide.
8. The method for sorting the zinc oxide-containing high-sulfur high-copper zinc concentrate according to claim 1, characterized in that: the dispersing agent is water glass.
9. The method for sorting the zinc oxide-containing high-sulfur high-copper zinc concentrate according to claim 1 or 2, characterized in that: the regulator is lime.
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