CN114453140A - Beneficiation reagent for lead-zinc flotation lead separation and preparation method thereof - Google Patents
Beneficiation reagent for lead-zinc flotation lead separation and preparation method thereof Download PDFInfo
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- CN114453140A CN114453140A CN202210148779.6A CN202210148779A CN114453140A CN 114453140 A CN114453140 A CN 114453140A CN 202210148779 A CN202210148779 A CN 202210148779A CN 114453140 A CN114453140 A CN 114453140A
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- Prior art keywords
- lead
- ore
- zinc
- concentration
- tailings
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- 238000005188 flotation Methods 0.000 title claims abstract description 28
- JQJCSZOEVBFDKO-UHFFFAOYSA-N lead zinc Chemical compound [Zn].[Pb] JQJCSZOEVBFDKO-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 239000003153 chemical reaction reagent Substances 0.000 title description 4
- 238000002360 preparation method Methods 0.000 title description 4
- 238000000926 separation method Methods 0.000 title description 4
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims abstract description 32
- 239000012141 concentrate Substances 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 29
- 238000003756 stirring Methods 0.000 claims abstract description 28
- QTANTQQOYSUMLC-UHFFFAOYSA-O Ethidium cation Chemical compound C12=CC(N)=CC=C2C2=CC=C(N)C=C2[N+](CC)=C1C1=CC=CC=C1 QTANTQQOYSUMLC-UHFFFAOYSA-O 0.000 claims abstract description 23
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 22
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 22
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 22
- 235000011116 calcium hydroxide Nutrition 0.000 claims abstract description 22
- 235000010265 sodium sulphite Nutrition 0.000 claims abstract description 16
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 15
- 235000010755 mineral Nutrition 0.000 claims abstract description 15
- 239000011707 mineral Substances 0.000 claims abstract description 15
- 239000012257 stirred material Substances 0.000 claims abstract description 12
- 229910052709 silver Inorganic materials 0.000 claims abstract description 10
- 239000004332 silver Substances 0.000 claims abstract description 10
- 230000002000 scavenging effect Effects 0.000 claims description 39
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims description 37
- 229960001763 zinc sulfate Drugs 0.000 claims description 37
- 229910000368 zinc sulfate Inorganic materials 0.000 claims description 37
- 238000000227 grinding Methods 0.000 claims description 27
- 239000000843 powder Substances 0.000 claims description 15
- 239000003112 inhibitor Substances 0.000 claims description 14
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 5
- 238000000498 ball milling Methods 0.000 claims description 5
- 229910052708 sodium Inorganic materials 0.000 claims description 5
- 239000011734 sodium Substances 0.000 claims description 5
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract description 11
- 239000011701 zinc Substances 0.000 abstract description 11
- 229910052725 zinc Inorganic materials 0.000 abstract description 11
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 5
- 238000011084 recovery Methods 0.000 abstract description 3
- RIZMRRKBZQXFOY-UHFFFAOYSA-N ethion Chemical compound CCOP(=S)(OCC)SCSP(=S)(OCC)OCC RIZMRRKBZQXFOY-UHFFFAOYSA-N 0.000 abstract 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 7
- 235000011941 Tilia x europaea Nutrition 0.000 description 7
- 239000004571 lime Substances 0.000 description 7
- 230000002401 inhibitory effect Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 239000011593 sulfur Substances 0.000 description 3
- 229910052717 sulfur Inorganic materials 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 229910052683 pyrite Inorganic materials 0.000 description 2
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 2
- 239000011028 pyrite Substances 0.000 description 2
- WGPCGCOKHWGKJJ-UHFFFAOYSA-N sulfanylidenezinc Chemical compound [Zn]=S WGPCGCOKHWGKJJ-UHFFFAOYSA-N 0.000 description 2
- 229910001656 zinc mineral Inorganic materials 0.000 description 2
- 229910052984 zinc sulfide Inorganic materials 0.000 description 2
- GGLZPLKKBSSKCX-YFKPBYRVSA-N L-ethionine Chemical compound CCSCC[C@H](N)C(O)=O GGLZPLKKBSSKCX-YFKPBYRVSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010979 pH adjustment Methods 0.000 description 1
- 229910052979 sodium sulfide Inorganic materials 0.000 description 1
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-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
- B03D1/001—Flotation agents
- B03D1/002—Inorganic compounds
-
- 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
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/06—Depressants
-
- 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
- B03D2203/00—Specified materials treated by the flotation agents; specified applications
- B03D2203/02—Ores
- B03D2203/04—Non-sulfide ores
Abstract
The invention relates to the technical field of lead-zinc flotation, in particular to a lead-zinc flotation method for ores, which comprises the steps of putting the mineral aggregate obtained in the step into a stirring barrel, and adding slaked lime and sodium sulfite into the stirring barrel for fully stirring; adding ethidium and modified dithiophosphate into the stirred material and continuously stirring; floating the evenly stirred materials to obtain lead concentrate with the lead concentrate grade of 45-48%; the lead-zinc flotation method can improve the recovery rate of lead and silver, reduce the mutual zinc content of lead and zinc, and reduce the dosage of ethion and nitrogen.
Description
Technical Field
The invention relates to the technical field of lead-zinc flotation, in particular to a beneficiation reagent for lead-zinc flotation and lead separation and a preparation method thereof.
Background
The traditional method is that hydrated lime is added as a pH regulator, sodium sulfide with odor is added, and then zinc sulfate and sodium sulfite are added as zinc inhibitors for lead-zinc flotation; finally, adding ethionine and ammonium-butyl-ammonium-black-agent as collecting agent. The production process of the prepared medicament has the defects of large medicament consumption, low lead concentrate quality and the like.
The lime mainly plays a role in pH adjustment and pyrite inhibition in lead flotation, and because the sulfur grade in raw ore is 8-12%, and part of lime plays a role in pyrite inhibition, the consumption of lime is large.
Disclosure of Invention
The invention aims to provide a beneficiation reagent for lead-zinc flotation and lead separation and a preparation method thereof aiming at the defects and shortcomings of the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that:
the invention relates to a lead-zinc flotation method for ores, which comprises the following steps:
a. grinding the crushed lead-zinc-silver raw ore, and adding zinc sulfate in the grinding process; the adding amount of zinc sulfate is 800-;
b. b, putting the ground mineral aggregate in the step a into a stirring barrel, and adding slaked lime and sodium sulfite into the stirring barrel for fully stirring; wherein the adding amount of the sodium sulfite is 100-150 g per ton of ore; the addition amount of the hydrated lime is 1000-1200 g per ton of ore;
c. b, adding ethidium and modified dithiophosphate into the stirred material in the step b, and continuously stirring; the adding amount of the ethidium and the azote is 30 to 50 grams per ton of ore; the addition amount of the modified dithiophosphate is 8-12 g per ton of ore;
d. and d, floating the uniformly stirred material in the step c to obtain lead concentrate with the lead concentrate grade of 45-48%.
Further, grinding treatment in the step a is divided into two sections for grinding, in the first section, a lattice type ball mill is adopted to grind the ore until the proportion of 200 meshes of the ore powder is 50%, and zinc sulfate is added in the first section of grinding process; in the second stage, overflow ball milling equipment is adopted to continuously mill the powder ground in the first stage to obtain a ground ore product with the proportion of 200 meshes of ore powder being more than 76%.
Further, in the flotation process of the step d, lead concentrate is roughly selected and then lead concentration is carried out for three times; adding 300 g of 200-plus-one slaked lime, 20-30 g of sodium humate, 300 g of 200-plus-one zinc sulfate and 20-30 g of W-1 inhibitor into each ton of tailings obtained after the first concentration, and then performing roughing again, wherein the lead concentrate after the first concentration enters the second lead concentration; adding 300 g of hydrated lime 200-; the lead concentrate after the second concentration enters the third lead concentration; carrying out concentration for the third time to obtain lead concentrate; and each ton of tailings obtained after the third concentration is added with 150 g of zinc sulfate and 20-30 g of W-1 inhibitor, and then the tailings enter the second concentration stage again.
Further, carrying out three times of lead scavenging on the roughed tailings; performing secondary lead scavenging on the obtained tailings after the primary lead scavenging; in the first lead scavenging, 8-12 g of ethidium and 2-3 g of modified dithiophosphate are added into each ton of mineral aggregate without tailings and then the mineral aggregate enters the roughing stage again; performing third lead scavenging on the obtained tailings after the second lead scavenging; and in the second lead scavenging, 8-12 g of ethidium and 2-3 g of modified dithiophosphate are added into each ton of mineral aggregate from which the tailings are removed, and then the first lead scavenging is carried out again.
Further, the pH of the pulp in the flotation process of step d is 9.
Compared with the prior art, the invention has the beneficial effects that:
1. the modified dithiophosphate has foamability, needs small amount, has better selectivity to lead and silver, is weak in zinc collection, can effectively improve the quality of lead concentrate, improves the recovery rate of lead and silver, reduces the mutual zinc content of lead concentrate, and can reduce the amount of ethidium and nitrogen (to 30-40% of the original amount).
2. The zinc sulfate is added in the primary grinding process, so that the zinc sulfate is conveniently and fully contacted with zinc blende, and the effect of inhibiting zinc by the zinc sulfate is enhanced;
3. the sodium sulfite is added into the stirring barrel before flotation, which mainly prolongs the contact time of the sodium sulfite with zinc sulfate and zinc minerals in ore pulp, and fully plays a role in inhibiting zinc;
4. lime is added into the stirring barrel before flotation, on one hand, the pH value of ore pulp is adjusted, and the proper pH value of lead roughing is facilitated; the lime is used in a small amount and has the effect of inhibiting sulfur.
Detailed Description
The present invention will now be described in detail with reference to specific examples, which are provided for illustration only and are not intended to be limiting.
Example 1:
the lead-zinc flotation method of the ore comprises the following steps:
a. grinding the crushed lead-zinc-silver raw ore, and adding zinc sulfate in the grinding process; the addition amount of zinc sulfate is 1000 g per ton of ore; grinding treatment is divided into two sections for grinding, in the first section, a grate-type ball mill is adopted to grind the ore until the proportion of 200 meshes of ore powder is 50%, and zinc sulfate is added in the first section of grinding process; in the second stage, overflow ball milling equipment is adopted to continuously mill the powder ground in the first stage to obtain a ground ore product with the proportion of 200 meshes of ore powder being more than 76%;
b. b, putting the ground mineral aggregate in the step a into a stirring barrel, and adding slaked lime and sodium sulfite into the stirring barrel for fully stirring; wherein the addition amount of sodium sulfite is 150 g per ton of ore; the addition amount of the hydrated lime is 1200 g per ton of ore; adjusting the pH value of the ore pulp to 9;
c. b, adding ethidium and modified dithiophosphate into the stirred material in the step b, and continuously stirring; the adding amount of the ethidium and the azote is 50 g per ton of ore; the addition of the modified dithiophosphate is 12 grams per ton of ore;
d. c, roughly selecting lead concentrate from the uniformly stirred materials in the step c, and then carrying out three-time lead concentration; adding 200 g of slaked lime, 25 g of sodium humate, 300 g of zinc sulfate and 20 g of W-1 inhibitor into each ton of tailings obtained after the first concentration, performing roughing again, and feeding lead concentrate after the first concentration into the second lead concentration; adding 200 g of hydrated lime, 300 g of zinc sulfate and 30 g of W-1 inhibitor into each ton of tailings obtained after the second concentration, and then re-entering the first concentration stage; the lead concentrate after the second lead concentration enters the third lead concentration; lead concentrate with the grade of 48% is obtained after the third fine concentration; and adding 125 g of zinc sulfate and 30 g of W-1 inhibitor into each ton of tailings obtained after the third concentration, and then re-entering the second concentration stage.
Carrying out three lead scavenging on the roughed tailings; performing secondary lead scavenging on the obtained tailings after the primary lead scavenging; in the first lead scavenging, 10 g of ethidium and 10 g of modified dithiophosphate are added into each ton of ore material without tailings, and then the ore material enters a roughing stage again; performing third lead scavenging on the obtained tailings after the second lead scavenging; the second lead scavenging is carried out again after 10 g of ethidium and 2 g of modified dithiophosphate are added into each ton of ore material without tailings
Example 2:
the lead-zinc flotation method of the ore comprises the following steps:
a. grinding the crushed lead-zinc-silver raw ore, and adding zinc sulfate in the grinding process; the addition amount of zinc sulfate is 800 g per ton of ore; grinding treatment is divided into two sections for grinding, in the first section, a grate-type ball mill is adopted to grind the ore until the proportion of 200 meshes of ore powder is 50%, and zinc sulfate is added in the first section of grinding process; in the second stage, overflow ball milling equipment is adopted to continuously mill the powder ground in the first stage to obtain a ground ore product with the proportion of 200 meshes of ore powder being more than 76%;
b. b, putting the ground mineral aggregate in the step a into a stirring barrel, and adding slaked lime and sodium sulfite into the stirring barrel for fully stirring; wherein the addition amount of the sodium sulfite is 100 g per ton of ore; the addition amount of the hydrated lime is 1000 g per ton of ore; adjusting the pH value of the ore pulp to 9;
c. b, adding ethidium nitrogen and the modified dithiophosphate into the stirred material in the step b, and continuously stirring; the adding amount of the ethidium and the azote is 30 g per ton of ore; the addition of the modified dithiophosphate is 8 grams per ton of ore;
d. c, roughly selecting lead concentrate from the uniformly stirred materials in the step c, and then carrying out three-time lead concentration; adding 300 g of hydrated lime, 30 g of sodium humate, 200 g of zinc sulfate and 25 g of W-1 inhibitor into each ton of tailings obtained after the first concentration, and performing roughing again, wherein lead concentrate after the first concentration enters the second lead concentration; adding 300 g of hydrated lime, 200 g of zinc sulfate and 20 g of W-1 inhibitor into each ton of tailings obtained after the second concentration, and then re-entering the first concentration stage; the lead concentrate after the second concentration enters the third lead concentration; lead concentrate with the grade of 47% is obtained after the third concentration; and after the third concentration, 150 g of zinc sulfate and 25 g of W-1 inhibitor are added into each ton of tailings, and the tailings enter the second concentration stage again.
Carrying out three lead scavenging on the roughed tailings; performing secondary lead scavenging on the obtained tailings after the primary lead scavenging; in the first lead scavenging, 12 g of ethidium and nitrogen and 2.5 g of modified dithiophosphate are added into each ton of ore material without tailings, and then the ore material enters a roughing stage again; performing third lead scavenging on the obtained tailings after the second lead scavenging; and in the second lead scavenging, 12 g of ethidium and 2.5 g of modified dithiophosphate are added into each ton of ore material without tailings, and then the first lead scavenging is carried out again.
Example 3:
the lead-zinc flotation method of the ore comprises the following steps:
a. grinding the crushed lead-zinc-silver raw ore, and adding zinc sulfate in the grinding process; the addition amount of zinc sulfate is 900 g per ton of ore; grinding treatment is divided into two sections for grinding, in the first section, a grate-type ball mill is adopted to grind the ore until the proportion of 200 meshes of ore powder is 50%, and zinc sulfate is added in the first section of grinding process; in the second stage, overflow ball milling equipment is adopted to continuously mill the powder ground in the first stage to obtain a ground ore product with the proportion of 200 meshes of ore powder being more than 76%;
b. b, putting the ground mineral aggregate in the step a into a stirring barrel, and adding slaked lime and sodium sulfite into the stirring barrel for fully stirring; wherein the addition amount of sodium sulfite is 125 g per ton of ore; the addition amount of the hydrated lime is 1100 g per ton of ore; adjusting the pH value of the ore pulp to 9;
c. b, adding ethidium and modified dithiophosphate into the stirred material in the step b, and continuously stirring; the adding amount of the ethidium and the azote is 40 g per ton of ore; the addition of the modified dithiophosphate is 10 grams per ton of ore;
d. c, roughly selecting lead concentrate from the uniformly stirred materials in the step c, and then carrying out three times of lead concentration; adding 250 g of slaked lime, 20 g of sodium humate, 250 g of zinc sulfate and 20 g of W-1 inhibitor into each ton of tailings obtained after the first concentration, performing roughing again, and feeding lead concentrate after the first concentration into the second lead concentration; adding 150 g of hydrated lime, 150 g of zinc sulfate and 15 g of W-1 inhibitor into each ton of tailings obtained after the second concentration, and then entering the first concentration stage again; the lead concentrate after the second concentration enters the third lead concentration; lead concentrate with the grade of 45% is obtained after the third concentration; and adding 100 g of zinc sulfate and 20 g of W-1 inhibitor into each ton of tailings obtained after the third concentration, and then re-entering the second concentration stage.
Carrying out three lead scavenging on the roughed tailings; performing secondary lead scavenging on the obtained tailings after the primary lead scavenging; in the first lead scavenging, 8 g of ethidium and 3 g of modified dithiophosphate are added into each ton of mineral aggregate without tailings and then the mineral aggregate enters a roughing stage again; performing third lead scavenging on the obtained tailings after the second lead scavenging; and in the second lead scavenging, 8 g of ethidium and 3 g of modified dithiophosphate are added into each ton of mineral aggregate from which the tailings are removed, and then the first lead scavenging is carried out again.
Compared with the prior art, the invention has the beneficial effects that:
1. the modified dithiophosphate has foamability, needs small amount, has better selectivity to lead and silver, is weak in zinc collection, can effectively improve the quality of lead concentrate, improves the recovery rate of lead and silver, reduces the mutual zinc content of lead concentrate, and can reduce the amount of ethidium and nitrogen (to 30-40% of the original amount).
2. The zinc sulfate is added in the primary ore grinding process, so that the zinc sulfate can be in full contact with zinc blende conveniently, and the effect of inhibiting zinc by the zinc sulfate is enhanced;
3. the sodium sulfite is added into the stirring barrel before flotation, which mainly prolongs the contact time of the sodium sulfite with zinc sulfate and zinc minerals in ore pulp, and fully plays a role in inhibiting zinc;
4. lime is added into the stirring barrel before flotation, on one hand, the pH value of ore pulp is adjusted, and the proper pH value of lead roughing is facilitated; the lime is used in a small amount and has the effect of inhibiting sulfur.
The foregoing is for the purpose of illustrating the invention only and various simple changes and modifications within the spirit of the invention made by those skilled in the art should fall within the scope of the invention.
Claims (5)
1. A lead-zinc flotation method for ores is characterized by comprising the following steps: the lead-zinc flotation method for the ore comprises the following steps:
a. grinding the crushed lead-zinc-silver raw ore, and adding zinc sulfate in the grinding process; the adding amount of zinc sulfate is 800-;
b. b, putting the ground mineral aggregate in the step a into a stirring barrel, and adding slaked lime and sodium sulfite into the stirring barrel for fully stirring; wherein the adding amount of the sodium sulfite is 100-150 g per ton of ore; the addition amount of the hydrated lime is 1000-1200 g per ton of ore;
c. b, adding ethidium and modified dithiophosphate into the stirred material in the step b, and continuously stirring; the adding amount of the ethidium and the azote is 30 to 50 grams per ton of ore; the adding amount of the modified dithiophosphate is 8-12 g per ton of ore;
d. and d, floating the uniformly stirred material in the step c to obtain lead concentrate with the lead concentrate grade of 45-48%.
2. The lead-zinc flotation method for ores according to claim 1, characterized in that: grinding treatment in the step a is divided into two sections for grinding, in the first section, a grate-type ball mill is adopted to grind the ore until the proportion of 200 meshes of ore powder is 50%, and zinc sulfate is added in the first section of grinding process; in the second stage, overflow ball milling equipment is adopted to continuously mill the powder ground in the first stage to obtain a ground ore product with the proportion of 200 meshes of ore powder being more than 76%.
3. The lead-zinc flotation method for ores according to claim 1, characterized in that: in the flotation process of the step d, firstly roughing lead concentrate and then carrying out tertiary lead concentration; adding 300 g of 200-plus-one slaked lime, 20-30 g of sodium humate, 300 g of 200-plus-one zinc sulfate and 20-30 g of W-1 inhibitor into each ton of tailings obtained after the first concentration, and then performing roughing again, wherein the lead concentrate after the first concentration enters the second lead concentration; adding 300 g of hydrated lime 200-; the lead concentrate after the second concentration enters the third lead concentration; carrying out concentration for the third time to obtain lead concentrate; and each ton of tailings obtained after the third concentration is added with 150 g of zinc sulfate and 20-30 g of W-1 inhibitor, and then the tailings enter the second concentration stage again.
4. A method for lead-zinc flotation of ores according to claim 3, characterized in that: carrying out three lead scavenging on the roughed tailings; performing secondary lead scavenging on the obtained tailings after the primary lead scavenging; in the first lead scavenging, 8-12 g of ethidium and 2-3 g of modified dithiophosphate are added into each ton of mineral aggregate without tailings and then the mineral aggregate enters the roughing stage again; performing third lead scavenging on the obtained tailings after the second lead scavenging; and in the second lead scavenging, 8-12 g of ethidium and 2-3 g of modified dithiophosphate are added into each ton of mineral aggregate from which the tailings are removed, and then the first lead scavenging is carried out again.
5. The lead-zinc flotation method for ores according to claim 1, characterized in that: the pH of the pulp in the flotation process of step d is 9.
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| CN202210148779.6A CN114453140B (en) | 2022-02-18 | 2022-02-18 | Beneficiation reagent for lead and zinc flotation and lead separation and preparation method thereof |
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| CN202210148779.6A CN114453140B (en) | 2022-02-18 | 2022-02-18 | Beneficiation reagent for lead and zinc flotation and lead separation and preparation method thereof |
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| CN114453140B CN114453140B (en) | 2024-01-26 |
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2022
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Patent Citations (6)
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| CN102319629A (en) * | 2011-06-09 | 2012-01-18 | 北京矿冶研究总院 | Activation flotation method for sulfide minerals inhibited by cyanide ions |
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| CN114453140B (en) | 2024-01-26 |
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