CN112892874A - Comprehensive utilization method of pit water of lead-zinc-silver ore - Google Patents
Comprehensive utilization method of pit water of lead-zinc-silver ore Download PDFInfo
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- CN112892874A CN112892874A CN202110065333.2A CN202110065333A CN112892874A CN 112892874 A CN112892874 A CN 112892874A CN 202110065333 A CN202110065333 A CN 202110065333A CN 112892874 A CN112892874 A CN 112892874A
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- water
- zinc
- mixed water
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- lead
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 76
- 238000000034 method Methods 0.000 title claims abstract description 22
- 229910052709 silver Inorganic materials 0.000 title claims abstract description 15
- 239000004332 silver Substances 0.000 title claims abstract description 15
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims abstract description 25
- 229910000368 zinc sulfate Inorganic materials 0.000 claims abstract description 21
- 229960001763 zinc sulfate Drugs 0.000 claims abstract description 21
- 229910000365 copper sulfate Inorganic materials 0.000 claims abstract description 14
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims abstract description 14
- 239000012141 concentrate Substances 0.000 claims abstract description 12
- 238000000926 separation method Methods 0.000 claims abstract description 12
- 239000011701 zinc Substances 0.000 claims abstract description 11
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 10
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000000292 calcium oxide Substances 0.000 claims abstract description 8
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000005188 flotation Methods 0.000 claims abstract description 8
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 5
- 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 description 6
- 239000008396 flotation agent Substances 0.000 claims description 6
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 claims description 6
- 229910052979 sodium sulfide Inorganic materials 0.000 claims description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- 229910002651 NO3 Inorganic materials 0.000 claims description 4
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 239000011686 zinc sulphate Substances 0.000 claims description 4
- 235000009529 zinc sulphate Nutrition 0.000 claims description 4
- 239000004088 foaming agent Substances 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 230000002829 reductive effect Effects 0.000 abstract description 7
- 239000010865 sewage Substances 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000011084 recovery Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 235000010755 mineral Nutrition 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 239000008239 natural water Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- JQJCSZOEVBFDKO-UHFFFAOYSA-N lead zinc Chemical compound [Zn].[Pb] JQJCSZOEVBFDKO-UHFFFAOYSA-N 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- WGPCGCOKHWGKJJ-UHFFFAOYSA-N sulfanylidenezinc Chemical compound [Zn]=S WGPCGCOKHWGKJJ-UHFFFAOYSA-N 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 229910052984 zinc sulfide Inorganic materials 0.000 description 1
Images
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
- B03D2201/007—Modifying reagents for adjusting pH or conductivity
-
- 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
- B03D2201/02—Collectors
-
- 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
- B03D2203/025—Precious metal ores
-
- 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
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a comprehensive utilization method of pit water of lead-zinc-silver ores, which comprises the steps of mixing the pit water with backwater of a tailing pond to form mixed water, wherein the pH value of the mixed water is 7; adding a collecting agent containing zinc sulfate into the mixed water, adding calcium oxide to adjust the pH value of the mixed water to be 9, and sending the mixed water to a flotation process to separate lead rough concentrate of the ore; and (3) adding copper sulfate into the tailings and the mixed water treated in the step (2), adding calcium oxide to adjust the pH value of the water to be 10, and carrying out zinc rough concentrate separation. The flotation process is adjusted, so that the utilization of pit water is realized, the sewage discharge is reduced, the environmental protection is realized, and the production cost is reduced.
Description
Technical Field
The invention relates to the technical field of waste water utilization, in particular to a comprehensive utilization method of pit water of lead-zinc-silver ores.
Background
Mine water is waste water generated in mining operation of mines, mainly comprises rock stratum fracture water, surface rainfall seepage water, water for mining operation, waste stone dump leaching water and the like, belongs to waste water prohibited to be directly discharged due to strong acidity and heavy metal ions, and can be discharged after being treated. A special pit water treatment plant is arranged to treat pit water, how to treat filter residues generated after treatment becomes another problem in production management, and a large amount of lime and flocculating agent are required to be added in operation, so that the production cost is increased.
The main indexes of the pit water of the lead-zinc-silver ore are as follows: pH of 2.7 to 3.1, TFe content of 68 mg/L to 70 mg/L, Cu2+Zn in an amount of 0.17 mg/l to 0.19 mg/l2+Mn in an amount of 1000 mg/l to 1050 mg/l2+SO in an amount of 1000 mg/l to 1050 mg/l4 2-The content is 5500 mg/L to 5600 mg/L.
Aiming at the problems of pit water treatment of lead-zinc-silver ores, the research on putting the pit water into mineral processing production for use can well achieve resource utilization and reduce the separate treatment of the pit water.
Disclosure of Invention
The embodiment of the invention provides a comprehensive utilization method of mine water of lead-zinc-silver ores, which realizes the utilization of the mine water, reduces the sewage discharge, realizes environmental protection and reduces the production cost.
The method for comprehensively utilizing the mine water of the lead-zinc-silver ore provided by the embodiment of the invention comprises the following steps:
step 1: mixing pit water and tailing pond backwater to form mixed water, wherein the pH value of the mixed water is 7;
step 2: adding a collecting agent containing zinc sulfate into the mixed water, adding calcium oxide to adjust the pH value of the mixed water to be 9, and sending the mixed water to a flotation process to separate lead rough concentrate of the ore;
and step 3: and (3) adding copper sulfate into the tailings and the mixed water treated in the step (2), adding calcium oxide to adjust the pH value of the water to be 10, and carrying out zinc rough concentrate separation.
In a preferred embodiment, from 30 to 100 grams of zinc sulphate are added per ton of ore processed in step 2.
In a preferred embodiment, step 2 preferably involves the addition of 40 grams of zinc sulphate per ton of ore processed.
In a preferred embodiment, the collector is: zinc sulfate, sodium sulfide, MB flotation agent, black powder, ethidium nitrate and foaming agent.
In a preferred embodiment, the collectors are added at 3.3 grams of sodium sulfide, 16.5 grams of MB flotation agent, and 6.6 grams of each of the black powder and ethidium nitrate per ton of ore processed.
In a preferred embodiment, 100 g to 300 g of copper sulfate is added per ton of tailings treated in step 3.
In a preferred embodiment, step 3 preferably involves the addition of 150 to 200 grams of copper sulfate per ton of ore processed.
The embodiment of the invention has the following beneficial effects: the flotation process is adjusted, so that the utilization of pit water is realized, the sewage discharge is reduced, the environmental protection is realized, and the production cost is reduced.
Drawings
FIG. 1 is a schematic flow chart of an embodiment of the present invention.
Detailed Description
The following describes in detail a specific embodiment of a method for comprehensively utilizing mine water of lead-zinc-silver ores according to an embodiment of the present invention, with reference to the accompanying drawings.
As shown in fig. 1, the method for comprehensively utilizing mine water of lead-zinc-silver ore provided by the embodiment of the present invention includes:
step 1: mixing pit water and tailing pond backwater to form mixed water, wherein the pH value of the mixed water is 7;
step 2: adding a collecting agent containing zinc sulfate into the mixed water, adding calcium oxide to adjust the pH value of the mixed water to be 9, and sending the mixed water to a flotation process to separate lead rough concentrate of the ore;
and step 3: and (3) adding copper sulfate into the tailings and the mixed water treated in the step (2), adding calcium oxide to adjust the pH value of the water to be 10, and carrying out zinc rough concentrate separation.
Based on the characteristic analysis of the pit water of the lead-zinc-silver ore, the indexes of the pit water which have large influence on lead-zinc separation mainly include the pH value of water and the content of zinc ions, the pH value of the backwater of a tailing pond is about 12-13, the two kinds of water are mixed, and the pH value of the mixed water is adjusted to be about 7.
The mixed water contains more zinc ions due to the fact that the mixed water contains pit water, so that the mixed water has a strong inhibiting effect on zinc blende, and separation of lead rough concentrates can be remarkably improved. The collector may specifically be: zinc sulfate, sodium sulfide, MB flotation agent, black powder, ethidium nitrate and foaming agent. The adding amount of the collecting agent is specifically as follows: 3.3 g of sodium sulfide, 16.5 g of MB flotation agent and 6.6 g of each of the pesticide and the ethidium and nitrogen are added into each ton of ore to be processed, only zinc sulfate needs to be added according to the amount because the mixed water already contains the zinc sulfate, and 30 g to 100 g of zinc sulfate, preferably 40 g of zinc sulfate is added into each ton of ore to be processed.
Selecting the same batch of ores, respectively using mixed water, backwater and natural water, and adding zinc sulfate as appropriate, wherein the separation results of lead rough concentrates under different conditions are as follows:
along with the reduction of the zinc sulfate dosage in the mixed water, the recovery rate of the lead rough concentrate is increased, and when the zinc sulfate dosage is 30 g/ton to 100 g/ton, the recovery rate of the silver, the lead and the zinc is close to the corresponding indexes of backwater and natural water of a tailing pond. The recovery indexes of silver, lead and zinc are comprehensively considered, the using amount of zinc sulfate is about 40 g/ton in mixed water flotation, and at the moment, the lead rough concentrate has high grade, high lead recovery rate, low zinc content and good separation effect.
During zinc separation, copper sulfate is added to the tailings and mixed water after lead separation, the comprehensive recovery rate of zinc rises along with the increase of the usage amount of copper sulfate, and the recovery rate does not rise any more when one ton of ores is treated and added to 300 g/ton of ores; in step 3, 100 to 300 grams of copper sulfate, preferably 150 to 200 grams of copper sulfate, per ton of ore processed, are added.
Selecting the same batch of ores, after lead selection operation, respectively using mixed water and backwater, and adding copper sulfate as appropriate, wherein the sorting results under different conditions are as follows:
after the mine water is comprehensively utilized, the benefits are mainly reflected in the following aspects: firstly, the sewage treatment cost of the mine water is reduced; and secondly, because the concentration of zinc-containing ions in the pit water is higher, the effect of partial zinc sulfate in flotation is replaced, and the unit consumption of the zinc sulfate is reduced. The sewage treatment cost is mainly reflected in the consumption of electric power according to the flow of mine water of 1000m per day3Calculating to save power by about 200 yuan/day and 6.5 ten thousand yuan per year; the normal addition of the zinc sulfate medicament is 400g/t, the calculation of at least 200g/t is saved, the annual treated ore amount is calculated to be 35 ten thousand tons, the zinc sulfate price is 4700 yuan/ton, and the annual cost of the zinc sulfate medicament is about 32.9 yuan.
According to the comprehensive utilization method of the pit water of the lead-zinc-silver ore, the pit water (acidic) is mixed with the backwater (alkaline) of the tailing pond and then is used for mineral separation production, the use amounts of zinc sulfate and copper sulfate are adjusted, the adverse effect on mineral separation technical indexes is avoided, the recycling is realized, the pollution discharge is reduced, and the cost is saved.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (7)
1. A comprehensive utilization method of mine water of lead-zinc-silver ores, which is characterized in that,
step 1: mixing pit water and tailing pond backwater to form mixed water, wherein the pH value of the mixed water is 7;
step 2: adding a collecting agent containing zinc sulfate into the mixed water, adding calcium oxide to adjust the pH value of the mixed water to be 9, and sending the mixed water to a flotation process to separate lead rough concentrate of ore;
and step 3: and (3) adding copper sulfate into the tailings and the mixed water treated in the step (2), adding calcium oxide to adjust the pH value of the water to be 10, and carrying out zinc rough concentrate separation.
2. A method according to claim 1, characterized in that in step 2 between 30 and 100 grams of zinc sulphate are added per ton of ore processed.
3. A method according to claim 2, characterized in that in step 2, preferably 40 grams of zinc sulphate are added per ton of ore processed.
4. A method according to claim 1, wherein the collector is: zinc sulfate, sodium sulfide, MB flotation agent, black powder, ethidium nitrate and foaming agent.
5. A method according to claim 4 wherein the collectors are dosed at 3.3 grams of sodium sulphide, 16.5 grams of MB flotation agent, and 6.6 grams of each of the black chemical and the ethidium nitrogen per ton of ore processed.
6. The process according to claim 1, characterized in that 100 to 300 grams of copper sulfate per ton of tailings treated is added in step 3.
7. The process according to claim 6, characterized in that 150 to 200 grams of copper sulfate per ton of tailings treated is added in step 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110065333.2A CN112892874A (en) | 2021-01-18 | 2021-01-18 | Comprehensive utilization method of pit water of lead-zinc-silver ore |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110065333.2A CN112892874A (en) | 2021-01-18 | 2021-01-18 | Comprehensive utilization method of pit water of lead-zinc-silver ore |
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| CN112892874A true CN112892874A (en) | 2021-06-04 |
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| CN202110065333.2A Withdrawn CN112892874A (en) | 2021-01-18 | 2021-01-18 | Comprehensive utilization method of pit water of lead-zinc-silver ore |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114558688A (en) * | 2022-03-08 | 2022-05-31 | 西藏华泰龙矿业开发有限公司 | Beneficiation method for refractory copper-lead-zinc ore |
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Application publication date: 20210604 |