CN111330741A - Synchronous flotation method for oxidized-vulcanized mixed zinc ore - Google Patents
Synchronous flotation method for oxidized-vulcanized mixed zinc ore Download PDFInfo
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- lead
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- 239000011701 zinc Substances 0.000 title claims abstract description 58
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims abstract description 57
- 238000005188 flotation Methods 0.000 title claims abstract description 57
- 229910052725 zinc Inorganic materials 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 33
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 24
- 239000012141 concentrate Substances 0.000 claims abstract description 15
- 238000002156 mixing Methods 0.000 claims abstract description 15
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 12
- JQJCSZOEVBFDKO-UHFFFAOYSA-N lead zinc Chemical compound [Zn].[Pb] JQJCSZOEVBFDKO-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000003112 inhibitor Substances 0.000 claims abstract description 10
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 9
- 229910021645 metal ion Inorganic materials 0.000 claims abstract description 9
- 150000003839 salts Chemical class 0.000 claims abstract description 9
- 238000000227 grinding Methods 0.000 claims abstract description 8
- 238000000926 separation method Methods 0.000 claims abstract description 8
- RLJMLMKIBZAXJO-UHFFFAOYSA-N lead nitrate Chemical compound [O-][N+](=O)O[Pb]O[N+]([O-])=O RLJMLMKIBZAXJO-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 6
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims abstract description 5
- HWSZZLVAJGOAAY-UHFFFAOYSA-L lead(II) chloride Chemical compound Cl[Pb]Cl HWSZZLVAJGOAAY-UHFFFAOYSA-L 0.000 claims abstract description 3
- DCKVFVYPWDKYDN-UHFFFAOYSA-L oxygen(2-);titanium(4+);sulfate Chemical compound [O-2].[Ti+4].[O-]S([O-])(=O)=O DCKVFVYPWDKYDN-UHFFFAOYSA-L 0.000 claims abstract description 3
- 229910000348 titanium sulfate Inorganic materials 0.000 claims abstract description 3
- 230000003647 oxidation Effects 0.000 claims description 7
- 238000007254 oxidation reaction Methods 0.000 claims description 7
- 235000019353 potassium silicate Nutrition 0.000 claims description 5
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 5
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 4
- 239000000194 fatty acid Substances 0.000 claims description 4
- 229930195729 fatty acid Natural products 0.000 claims description 4
- 150000004665 fatty acids Chemical class 0.000 claims description 4
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims description 4
- 235000019982 sodium hexametaphosphate Nutrition 0.000 claims description 4
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims description 4
- 239000004375 Dextrin Substances 0.000 claims description 3
- 229920001353 Dextrin Polymers 0.000 claims description 3
- 235000019425 dextrin Nutrition 0.000 claims description 3
- 229920002472 Starch Polymers 0.000 claims description 2
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims description 2
- 150000007513 acids Chemical class 0.000 claims description 2
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 2
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 claims description 2
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 claims description 2
- 239000008107 starch Substances 0.000 claims description 2
- 235000019698 starch Nutrition 0.000 claims description 2
- 239000012991 xanthate Substances 0.000 claims description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 22
- 239000011707 mineral Substances 0.000 abstract description 22
- 238000004073 vulcanization Methods 0.000 abstract description 17
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 abstract description 15
- 239000011787 zinc oxide Substances 0.000 abstract description 9
- 239000005083 Zinc sulfide Substances 0.000 abstract description 8
- 229910052984 zinc sulfide Inorganic materials 0.000 abstract description 8
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 abstract description 7
- 239000003153 chemical reaction reagent Substances 0.000 abstract description 5
- 238000011084 recovery Methods 0.000 abstract description 5
- 238000004064 recycling Methods 0.000 abstract description 4
- SNWNLRQYQRTOBP-UHFFFAOYSA-N [O--].[S--].[Zn++].[Zn++] Chemical compound [O--].[S--].[Zn++].[Zn++] SNWNLRQYQRTOBP-UHFFFAOYSA-N 0.000 abstract description 2
- 235000010755 mineral Nutrition 0.000 description 19
- 235000014692 zinc oxide Nutrition 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 4
- 230000004913 activation Effects 0.000 description 3
- 229910052981 lead sulfide Inorganic materials 0.000 description 3
- 229940056932 lead sulfide Drugs 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 229910000464 lead oxide Inorganic materials 0.000 description 2
- YEXPOXQUZXUXJW-UHFFFAOYSA-N oxolead Chemical compound [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 description 2
- 229910052979 sodium sulfide Inorganic materials 0.000 description 2
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 229920001732 Lignosulfonate Polymers 0.000 description 1
- REYJJPSVUYRZGE-UHFFFAOYSA-N Octadecylamine Chemical compound CCCCCCCCCCCCCCCCCCN REYJJPSVUYRZGE-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 229910001308 Zinc ferrite Inorganic materials 0.000 description 1
- 239000004110 Zinc silicate Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- TUZCOAQWCRRVIP-UHFFFAOYSA-N butoxymethanedithioic acid Chemical compound CCCCOC(S)=S TUZCOAQWCRRVIP-UHFFFAOYSA-N 0.000 description 1
- 229940105847 calamine Drugs 0.000 description 1
- NKCVNYJQLIWBHK-UHFFFAOYSA-N carbonodiperoxoic acid Chemical class OOC(=O)OO NKCVNYJQLIWBHK-UHFFFAOYSA-N 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910000365 copper sulfate Inorganic materials 0.000 description 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052864 hemimorphite Inorganic materials 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000001509 sodium citrate Substances 0.000 description 1
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- WGEATSXPYVGFCC-UHFFFAOYSA-N zinc ferrite Chemical compound O=[Zn].O=[Fe]O[Fe]=O WGEATSXPYVGFCC-UHFFFAOYSA-N 0.000 description 1
- 229910001656 zinc mineral Inorganic materials 0.000 description 1
- XSMMCTCMFDWXIX-UHFFFAOYSA-N zinc silicate Chemical compound [Zn+2].[O-][Si]([O-])=O XSMMCTCMFDWXIX-UHFFFAOYSA-N 0.000 description 1
- 235000019352 zinc silicate Nutrition 0.000 description 1
- CPYIZQLXMGRKSW-UHFFFAOYSA-N zinc;iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[Fe+3].[Fe+3].[Zn+2] CPYIZQLXMGRKSW-UHFFFAOYSA-N 0.000 description 1
- RNWHGQJWIACOKP-UHFFFAOYSA-N zinc;oxygen(2-) Chemical class [O-2].[Zn+2] RNWHGQJWIACOKP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
Abstract
The invention discloses a synchronous flotation method for oxidation-vulcanization mixed zinc ore, which comprises the following steps: (1) carrying out ore grinding treatment on raw ore of the oxidized-vulcanized mixed zinc ore; or directly selecting tailings after lead separation of oxidized-vulcanized mixed lead-zinc ores; (2) adding sodium carbonate for size mixing, controlling the pH value of the ore pulp to be 8-12, and then adding a metal ion salt, wherein the metal ion salt is at least one of lead nitrate, lead chloride, aluminum sulfate and titanium sulfate; (3) and adding an inhibitor and a collecting agent, and performing zinc flotation after size mixing to obtain the zinc oxide-sulfide bulk concentrate. The invention can obtain the zinc oxide-zinc sulfide bulk concentrate containing the zinc oxide mineral and the zinc sulfide mineral in the same flotation operation, desliming treatment is not needed before flotation, the flotation flow is short, the flotation reagent system is simpler, the flow is stable and easy to operate, the zinc flotation recovery rate is high, and the recycling of mineral dressing backwater is facilitated.
Description
Technical Field
The invention relates to a synchronous flotation method of oxidized-vulcanized mixed zinc ore, belonging to the technical field of mineral processing.
Background
The zinc metal is used in modern industry only after metals such as iron, aluminum, copper and the like, is mainly used in the zinc plating industry, the mechanical manufacturing industry and the battery field, and has very important function. The zinc ore resources in China are relatively rich, most of mines mainly adopt mining and sorting sulfide ores at present, only a few part of mines can utilize high-grade oxidized ores by adopting a leaching method, and low-grade oxidized zinc ores and oxidized-vulcanized mixed zinc ores are typical complex and difficult-to-process resources, so that the development of a new high-efficiency ore dressing and metallurgy technology is urgently needed.
The conventional mineral processing technology is adopted to process the oxidized-sulfurized mixed lead-zinc ore basically according to the principle of 'lead first and zinc first and sulfur first and oxygen second', namely, lead sulfide minerals are firstly selected, lead oxide minerals are then selected, zinc sulfide minerals are then selected, zinc oxide minerals are finally selected, and four concentrate products such as lead sulfide concentrates, lead oxide concentrates, zinc sulfide concentrates and zinc oxide concentrates are respectively produced in four sorting cycles. Therefore, the conventional flotation technology has the problems of long process flow, complex structure, high beneficiation reagent consumption and the like; and the mutual influence before each sorting circulation is low, the recovery rate of metal is low, the mineral separation operation and the recycling of backwater are not facilitated, and the practical application of the technology in industrial production is greatly limited. Moreover, most of the oxidized-sulfurized mixed lead-zinc ores are complex in structure, associated components are unstable, the embedded particle size is not uniform, argillization is serious, a large amount of clay, limonite and soluble salt are contained, and the effect of the conventional sulfurized-amine method for floatation of zinc oxide ores is unsatisfactory. Due to the factors, a large amount of low-grade zinc oxide ore and oxidation-vulcanization mixed zinc ore resources in China cannot be utilized in a large scale.
Disclosure of Invention
Aiming at the problems of long flow, low flotation recovery rate, complex operation and the like of the flotation process of the oxidation-vulcanization mixed zinc ore, the invention provides the synchronous flotation method of the oxidation-vulcanization mixed zinc ore, which can obtain the oxidation-vulcanization mixed zinc ore concentrate containing zinc oxide minerals and zinc sulfide minerals in the same flotation operation, does not need desliming treatment before flotation, has short flotation flow, simple flotation reagent system, stable flow and easy operation, high zinc flotation recovery rate and is beneficial to recycling of mineral dressing backwater.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
a synchronous flotation method for mixed zinc oxide-sulfide ores comprises the following steps:
(1) carrying out ore grinding treatment on raw ore of the oxidized-vulcanized mixed zinc ore; or directly selecting tailings after lead separation of oxidized-vulcanized mixed lead-zinc ores;
(2) adding sodium carbonate for size mixing, controlling the pH value of the ore pulp to be 8-12, and then adding a metal ion salt, wherein the metal ion salt is at least one of lead nitrate, lead chloride, aluminum sulfate and titanium sulfate;
(3) and adding an inhibitor and a collecting agent, and performing zinc flotation after size mixing to obtain the zinc oxide-sulfide bulk concentrate.
The invention relates to a synchronous flotation method for an oxidation-vulcanization mixed zinc ore, which comprises the step (1), wherein the oxidation rate of zinc in raw ore of the oxidation-vulcanization mixed zinc ore is not less than 20%, or the oxidation rate of zinc in tailings after lead separation of the oxidation-vulcanization mixed lead-zinc ore is not less than 20%.
The invention relates to a synchronous flotation method for an oxidation-vulcanization mixed zinc ore, which comprises the step (1) of controlling the product fineness of an oxidation-vulcanization mixed zinc ore raw ore after ore grinding treatment or the fineness of a tailing product after lead separation of the oxidation-vulcanization mixed lead-zinc ore to be more than 55 percent in the content of-0.074 mm.
The invention relates to a synchronous flotation method for an oxidation-vulcanization mixed zinc ore, wherein in the step (2), the size mixing time is 3-15 min.
The invention relates to a synchronous flotation method for an oxidation-vulcanization mixed zinc ore, wherein in the step (2), the dosage of a metal ion salt is at least 100g/t of raw ore or tailings, and preferably 500-1500 g/t of raw ore or tailings.
The invention relates to a synchronous flotation method for an oxidation-vulcanization mixed zinc ore, wherein in the step (3), an inhibitor is at least one of water glass, starch, dextrin, sodium carboxymethylcellulose and sodium hexametaphosphate, the dosage of the inhibitor is at least 500g/t of raw ore or tailings, and the preferred dosage of the inhibitor is 1000-3000 g/t of raw ore or tailings.
The invention relates to a synchronous flotation method of an oxidation-vulcanization mixed zinc ore, wherein in the step (3), a collecting agent is at least one of fatty acids, xanthates and hydroximic acids, the using amount of the collecting agent is at least 300g/t of raw ore or tailings, and the preferable using amount is 500-1500 g/t of raw ore or tailings.
The invention relates to a synchronous flotation method for an oxidation-vulcanization mixed zinc ore, wherein in the step (3), the size mixing time is 5-20 min; the flotation time is 5-15 min.
According to the invention, the carbonate precipitates or hydroxycarbonate compounds generated by carbonate ions and metal ions in the ore pulp aqueous solution are skillfully utilized to deposit or adsorb the difference of properties on the surfaces of different minerals, so that adsorption sites are provided for the adsorption of an inhibitor on the surface of a gangue mineral or the adsorption of a collector on the surface of a target mineral, the selective adsorption of a flotation reagent is enhanced, the synchronous floating of various zinc-containing minerals in the same flotation process and the selective inhibition of various gangue are realized, and the zinc oxide-zinc sulfide mixed concentrate containing zinc oxide minerals and zinc sulfide minerals is obtained.
The method changes the original zinc sulfide mineral flotation-zinc oxide mineral flotation process into a mixed zinc mineral synchronous flotation process; designing the original two flotation cycles as one flotation cycle; the method has the characteristics of no need of desliming treatment before flotation, short flotation flow, simple and stable flotation reagent system, easy operation, high zinc flotation recovery rate, benefit for recycling of mineral dressing backwater and the like.
Detailed Description
The present invention will be described in further detail with reference to specific examples, but the scope of the present invention is not limited to the examples. In the examples of the present invention, the contents are mass contents unless otherwise specified.
Example 1
In this example, a mixed zinc oxide-sulfide ore from Yunnan was used, and the sample contained Zn 7.35%, CaO13.01%, and SiO249.97%, zinc oxidation rate 70.52%, wherein the distribution rate of calamine is 52.85%, the distribution rate of zinc silicate is 14.27%, and other zinc oxides are mainly zinc ferrite.
Grinding raw ore to-0.074 mm, wherein the raw ore accounts for more than 85%, adding 2kg/t of sodium carbonate for size mixing for 5min, controlling the pH value of ore pulp to be about 11.0, adding 100g/t of aluminum sulfate and 500g/t of lead nitrate for activation, adding 1000g/t of combined inhibitor (600g/t of water glass, 200g/t of sodium hexametaphosphate and 200g/t of dextrin) and 1000g/t of fatty acid collecting agent, stirring and mixing the pulp for 10min, and synchronously performing flotation for 7min to obtain the zinc oxide-sulfide mixed concentrate. The test results are shown in Table 1.
Comparative example 1
The other conditions were identical to those of example 1 except that no aluminum sulfate was added and no lead nitrate was used for activation, and the test results are shown in Table 1.
Comparative example 2
The same procedure as in example 1 was repeated to oxidize and sulfide the mixed zinc ore raw ore.
(1) Grinding raw ore to 85% of-0.074 mm, adding 500g/t copper sulfate, 200g/t butyl xanthate and 20g/t No. 2 oil, and performing flotation to obtain zinc sulfide concentrate and flotation tailings;
(2) 10kg/t of sodium sulfide, 1kg/t of sodium carbonate, 500g/t of water glass and 500g/t of sodium hexametaphosphate are sequentially added into the flotation tailings, 300g/t of octadecylamine and 20g/t of No. 2 oil are added, size mixing is carried out for 3min, and then flotation is carried out, and test results are shown in table 1.
TABLE 1 flotation test results for oxide-sulfide mixed zinc ores
Example 2
In this example, a sample of an oxidized-sulfidized mixed lead-zinc ore containing 4.64% of Pb, 3.22% of Zno, 19.67% of CaO and SiO was used247.57%, TFe 2.53%, MgO 8.56%, wherein the oxidation rate of lead is about 50%, and the oxidation rate of zinc is about 70%.
Grinding raw ore to-0.074 mm, accounting for 85%, adding 10kg/t of sodium sulfide for vulcanization, adding 200g/t of pentoxanthin for synchronous flotation to obtain oxidized-lead sulfide concentrate, adding 5kg/t of sodium carbonate for size mixing for 5min, adding 500g/t of lead nitrate for activation, adding 2000g/t of combined inhibitor (500g/t of water glass, 300g/t of sodium citrate and 1200g/t of lignosulfonate) and 500g/t of fatty acid collecting agent, stirring and mixing for 5min, and synchronously floating for 10min to obtain oxidized-zinc sulfide concentrate. The test results are shown in Table 2.
TABLE 2 flotation test results for oxidized-sulfidized mixed lead-zinc ores
Claims (8)
1. A synchronous flotation method for oxidized-vulcanized mixed zinc ore is characterized by comprising the following steps:
(1) carrying out ore grinding treatment on raw ore of the oxidized-vulcanized mixed zinc ore; or directly selecting tailings after lead separation of oxidized-vulcanized mixed lead-zinc ores;
(2) adding sodium carbonate for size mixing, controlling the pH value of the ore pulp to be 8-12, and then adding a metal ion salt, wherein the metal ion salt is at least one of lead nitrate, lead chloride, aluminum sulfate and titanium sulfate;
(3) and adding an inhibitor and a collecting agent, and performing zinc flotation after size mixing to obtain the zinc oxide-sulfide bulk concentrate.
2. The synchronous flotation method for the oxidized-vulcanized mixed zinc ore according to claim 1, characterized in that: in the step (1), the oxidation rate of zinc in the oxidized-vulcanized mixed zinc ore raw ore is not less than 20%, or the oxidation rate of zinc in tailings after lead separation of the oxidized-vulcanized mixed lead-zinc ore is not less than 20%.
3. The synchronous flotation method for the oxidized-vulcanized mixed zinc ore according to claim 1, characterized in that: in the step (1), the fineness of the product after grinding treatment of the oxidized-vulcanized mixed zinc ore raw ore or the fineness of the tailing product after lead separation of the oxidized-vulcanized mixed lead-zinc ore is controlled to be more than 55 percent in the content of-0.074 mm.
4. The synchronous flotation method for the oxidized-vulcanized mixed zinc ore according to claim 1, characterized in that: in the step (2), the size mixing time is 3-15 min.
5. The synchronous flotation method for the oxidized-vulcanized mixed zinc ore according to claim 1, characterized in that: in the step (2), the dosage of the metal ion salt is at least 100g/t of raw ore or tailings.
6. The synchronous flotation method for the oxidized-vulcanized mixed zinc ore according to claim 1, characterized in that: in the step (3), the inhibitor is at least one of water glass, starch, dextrin, sodium carboxymethyl cellulose and sodium hexametaphosphate, and the dosage is at least 500g/t of raw ore or tailings.
7. The synchronous flotation method for the oxidized-vulcanized mixed zinc ore according to claim 1, characterized in that: in the step (3), the collecting agent is at least one of fatty acids, xanthates and hydroximic acids, and the using amount of the collecting agent is at least 300g/t of raw ore or tailings.
8. The synchronous flotation method for the oxidized-vulcanized mixed zinc ore according to claim 1, characterized in that: in the step (3), the size mixing time is 5-20 min; the flotation time is 5-15 min.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111715410A (en) * | 2020-07-01 | 2020-09-29 | 中南大学 | Combined inhibitor for zinc sulfide ore and application thereof |
| CN112221717A (en) * | 2020-10-26 | 2021-01-15 | 厦门紫金矿冶技术有限公司 | Zinc oxide ore flotation defoaming agent and application thereof |
| CN114653484A (en) * | 2022-04-02 | 2022-06-24 | 昆明理工大学 | Novel zinc oxide ore selective flotation reagent and preparation method and application thereof |
| CN115318448A (en) * | 2022-09-01 | 2022-11-11 | 昆明理工大学 | High-entropy activation flotation method for zinc oxide ore |
| CN115945299A (en) * | 2022-12-13 | 2023-04-11 | 昆明理工大学 | Zinc sulfide ore enhanced flotation method based on copper-lead coupling activation |
Citations (18)
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Application publication date: 20200626 Assignee: Yunnan Keli environmental protection Co.,Ltd. Assignor: CENTRAL SOUTH University Contract record no.: X2024980004590 Denomination of invention: A synchronous flotation method for oxidized sulfide mixed zinc ore Granted publication date: 20220128 License type: Exclusive License Record date: 20240418 |