CN115417483A - Method for treating sulfide ore mine wastewater by using pyrite - Google Patents
Method for treating sulfide ore mine wastewater by using pyrite Download PDFInfo
- Publication number
- CN115417483A CN115417483A CN202211129384.8A CN202211129384A CN115417483A CN 115417483 A CN115417483 A CN 115417483A CN 202211129384 A CN202211129384 A CN 202211129384A CN 115417483 A CN115417483 A CN 115417483A
- Authority
- CN
- China
- Prior art keywords
- pyrite
- sulfide ore
- wastewater
- mine wastewater
- sulfide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 48
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 229910052683 pyrite Inorganic materials 0.000 title claims abstract description 45
- 239000011028 pyrite Substances 0.000 title claims abstract description 45
- 239000002351 wastewater Substances 0.000 title claims abstract description 41
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 230000015556 catabolic process Effects 0.000 claims abstract description 34
- 238000006731 degradation reaction Methods 0.000 claims abstract description 34
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 24
- 239000000126 substance Substances 0.000 claims abstract description 10
- 239000002245 particle Substances 0.000 claims abstract description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 12
- 239000011707 mineral Substances 0.000 claims description 12
- ZOOODBUHSVUZEM-UHFFFAOYSA-N ethoxymethanedithioic acid Chemical compound CCOC(S)=S ZOOODBUHSVUZEM-UHFFFAOYSA-N 0.000 claims description 5
- 229910052952 pyrrhotite Inorganic materials 0.000 claims description 5
- 239000012991 xanthate Substances 0.000 claims description 4
- JZRWCGZRTZMZEH-UHFFFAOYSA-N Thiamine Natural products CC1=C(CCO)SC=[N+]1CC1=CN=C(C)N=C1N JZRWCGZRTZMZEH-UHFFFAOYSA-N 0.000 claims description 3
- 229910052960 marcasite Inorganic materials 0.000 claims description 3
- 239000011721 thiamine Substances 0.000 claims description 3
- 229960003495 thiamine Drugs 0.000 claims description 3
- 235000019157 thiamine Nutrition 0.000 claims description 3
- -1 thiamine ester Chemical class 0.000 claims description 3
- 150000003573 thiols Chemical class 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 2
- PFRUBEOIWWEFOL-UHFFFAOYSA-N [N].[S] Chemical compound [N].[S] PFRUBEOIWWEFOL-UHFFFAOYSA-N 0.000 claims 1
- 239000003814 drug Substances 0.000 abstract description 11
- 238000004065 wastewater treatment Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 238000007254 oxidation reaction Methods 0.000 abstract description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 2
- 239000003153 chemical reaction reagent Substances 0.000 abstract description 2
- 229910052760 oxygen Inorganic materials 0.000 abstract description 2
- 239000001301 oxygen Substances 0.000 abstract description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract 1
- 239000001257 hydrogen Substances 0.000 abstract 1
- 229910052739 hydrogen Inorganic materials 0.000 abstract 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 230000020477 pH reduction Effects 0.000 description 6
- 238000005188 flotation Methods 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 4
- 150000002978 peroxides Chemical class 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- RIZMRRKBZQXFOY-UHFFFAOYSA-N ethion Chemical compound CCOP(=S)(OCC)SCSP(=S)(OCC)OCC RIZMRRKBZQXFOY-UHFFFAOYSA-N 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 229910052569 sulfide mineral Inorganic materials 0.000 description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052976 metal sulfide Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- OMKVZYFAGQKILB-UHFFFAOYSA-M potassium;butoxymethanedithioate Chemical compound [K+].CCCCOC([S-])=S OMKVZYFAGQKILB-UHFFFAOYSA-M 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010170 biological method Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- JRKICGRDRMAZLK-UHFFFAOYSA-L peroxydisulfate Chemical compound [O-]S(=O)(=O)OOS([O-])(=O)=O JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- JCBJVAJGLKENNC-UHFFFAOYSA-M potassium ethyl xanthate Chemical compound [K+].CCOC([S-])=S JCBJVAJGLKENNC-UHFFFAOYSA-M 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/101—Sulfur compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
Abstract
The invention discloses a method for treating sulfide ore mine wastewater by using pyrite. The sulfide ore mine wastewater contains a sulfide ore collecting agent, the pyrite is crushed and ground, and then the obtained pyrite particles are fully contacted with the sulfide ore mine wastewater and react for a period of time, so that the degradation of the sulfide ore collecting agent in the wastewater is accelerated. According to the method for treating the sulfide ore mine wastewater by using the pyrite, the common low-value associated pyrite in the sulfide ore mine is innovatively used as a wastewater treatment agent, and substances such as active oxygen generated in the self-oxidation process of the pyrite are used for reacting with residual medicaments in the mine wastewater so as to promote the degradation of the pyrite mine wastewater, so that the mine wastewater can meet the requirement of the sulfide ore mine on the mine wastewater treatment effect under the condition of not adding other chemical reagents, the degradation rate of a sulfide ore collecting agent in the wastewater can be remarkably improved, the degradation period is shortened, parameters such as pH (potential of hydrogen), temperature and the like do not need to be adjusted, and the method is environment-friendly.
Description
Technical Field
The invention relates to the technical field of wastewater treatment, in particular to a method for treating sulfide ore mine wastewater by using pyrite.
Background
Non-ferrous metal minerals usually exist in the form of multi-metal sulfide ores, different sulfide ores are separated by flotation, waste water generated in the flotation process is a main source of mine waste water and contains a large amount of residual mineral dressing agents, particularly sulfide ore collecting agents such as xanthate collecting agents, sulfur and nitrogen collecting agents, thiamine ester collecting agents, black medicine collecting agents, thiol collecting agents and various collecting derivatives thereof, and if the non-ferrous metal minerals are directly discharged into the nature, not only is water resources wasted, but also a series of ecological environment problems are generated; if the sulfide mineral is not treated and directly recycled in the mineral separation process, the sulfide mineral can affect the flotation recovery or the flotation separation, and the adverse effect is generated on the flotation index.
The current methods for treating sulfide ore mine wastewater include physical, chemical and biological methods. The existing method plays an important role in improving the treatment water level of mine wastewater, but the existing methods all face different problems, such as complex process, long period, high cost and the like. The acidification degradation method, the natural degradation method and the chemical oxidation method belong to chemical methods, the cost and demand factors are comprehensively considered, and the current treatment of the sulfide mine wastewater mainly adopts the acidification degradation method and the natural degradation method. The acidification degradation method utilizes the characteristic that the medicament is hydrolyzed under the acidic condition to degrade the wastewater by adjusting the pH of the wastewater to be acidic. The natural degradation method utilizes the instability of the medicament per se to naturally degrade the medicament under the action of air, but the natural degradation method has slow speed and generally needs a larger-scale degradation site. The chemical oxidation method solves the problem of slow degradation rate of the medicament in the natural degradation method, but has strong reaction, larger medicament consumption, high cost and less application. Therefore, the development of a wastewater treatment technology which has simple process, low cost and good effect, can meet the requirement of nonferrous metal beneficiation industry on treatment effect and can also meet the requirement of enterprises on treatment cost in a relatively balanced way is still an urgent need in the field of sulfide mine wastewater treatment.
Pyrite is a common iron-containing sulphide mineral, including three natural minerals, pyrite, marcasite and pyrrhotite, as well as artificially synthesized iron sulphide. The existing method for treating wastewater by using pyrite is characterized in that pyrite is used in combination with peroxides such as persulfate and hydrogen peroxide, divalent iron released by dissolving pyrite is used for catalyzing the peroxides to form Fenton reaction, the essential of the method is that the peroxides oxidize residual medicaments in the wastewater, the process is complex, the reaction is severe, the requirement on the site is high, and the cost of the peroxides used in combination is high. The other method is to use pyrite and microorganisms in combination, the essence of the method is that microorganisms oxidize pyrite to produce acid to reduce the pH value of wastewater, so that the degradation of residual medicaments in the wastewater is accelerated, the essence still belongs to an acidification degradation method, the microorganism is difficult to culture and has more condition limitation, and a large amount of secondary pollutants are generated similar to a direct acidification method. At present, no method for using single pyrite as a mine wastewater treatment material exists.
Disclosure of Invention
The invention aims to provide a method for treating the mine wastewater of the sulphide ore by using the pyrite, aiming at the defects of the prior art, the method creatively takes the low-value co-associated pyrite commonly seen in the sulphide ore as the wastewater treatment agent, and utilizes substances such as active oxygen generated in the oxidation process of the pyrite to react with residual medicaments in the mine wastewater so as to promote the degradation of the substances, so that the mine wastewater can meet the requirements of the sulphide ore on the treatment effect of the mine wastewater without adding other chemical reagents.
The invention relates to a method for treating sulfide ore mine wastewater by using pyrite, which comprises the following steps: and crushing and grinding the pyrite, and then fully contacting and reacting the obtained pyrite particles with the sulfide mine wastewater for a period of time, so that the degradation of a sulfide collecting agent in the wastewater is accelerated, and the industrial discharge or recycling requirement is met.
Further, the pyrite is 1 or more of natural pyrite, marcasite, pyrrhotite or artificially synthesized minerals.
Further, the sulfide ore collecting agent is 1 or more of xanthate collecting agent, sulfur and nitrogen collecting agent, thiamine ester collecting agent, black-chemical collecting agent, thiol collecting agent and derivatives thereof.
Further, the pyrite is crushed and ground into pyrite with the granularity of 1mm or less.
Compared with the prior art, the invention has the beneficial effects that:
the invention adopts the pyrite as the mine wastewater treatment material, has wide source and low price, and for most nonferrous metal sulphide ore mines, the pyrite usually coexists with valuable sulphide minerals such as copper, lead, zinc and the like, is a low-value mineral separation product or byproduct, can be obtained from local sources without purchasing, has no loss basically in the using process, and can be continuously sold after being used. Compared with an acidification degradation method and a natural degradation method, the method can obviously improve the degradation rate of the sulfide ore collecting agent in the wastewater, shorten the degradation period, does not need to adjust parameters such as pH, temperature and the like, and is environment-friendly. Compared with a chemical oxidation method, the method has the advantages of mild reaction, no extra medicament consumption, no special field, simple operation, low cost, environmental friendliness and suitability for large-scale popularization and application.
Detailed Description
The following are specific examples of the present invention and further describe the technical solutions of the present invention, but the present invention is not limited to these examples.
Example 1
The mine wastewater solution is simulated to contain 160mg/L of sulfide mineral collector potassium ethyl xanthate and neutral pH, 2.0g/L of pyrite with the granularity of-0.038 mm is added, the degradation rate of ethyl xanthate reaches 83.2% after standing reaction for 24 hours, and the degradation rate of xanthate reaches 99.1% after standing reaction for 48 hours.
Example 1 the degradation rate was increased 6.30 times and 3.71 times, respectively, compared to the case where no pyrite was added. Compared with the mica added with non-pyrite mineral, the degradation rate is respectively improved by 6.22 times and 3.72 times.
Example 2
The simulated mine wastewater solution contains 100mg/L of sulfide ore collecting agent potassium butyl xanthate, the pH value is 9.0 +/-0.2, 5.0g/L of pyrrhotite with the granularity of-0.074 mm is added, the degradation rate of the potassium butyl xanthate reaches 88.2 percent after stirring reaction for 24 hours, and the degradation rate reaches 98.9 percent after stirring reaction for 48 hours.
Example 2 the degradation rate was increased by 6.68 times and 3.70 times, respectively, compared to the case where pyrrhotite was not added. Compared with the method of adding magnetite which is an iron-containing oxidized ore mineral, the degradation rate is respectively improved by 6.19 times and 3.58 times.
Example 3
The simulated mine wastewater solution contains 120mg/L of sulfide ore collecting agent ethion nitrogen and has pH of 6.0 +/-0.2, 10.0g/L of pyrite with granularity of-0.10 mm is added, the degradation rate of ethion nitrogen reaches 70.7 percent after stirring for 24 hours, and the degradation rate of ethion nitrogen reaches 99.2 percent after stirring for 48 hours.
Example 3 the degradation rate was increased 6.93 times and 4.96 times, respectively, compared to the case where no pyrite was added.
The above is not relevant and is applicable to the prior art.
While certain specific embodiments of the present invention have been described in detail by way of illustration, it will be understood by those skilled in the art that the foregoing is illustrative only and is not limiting of the scope of the invention, as various modifications or additions may be made to the specific embodiments described and substituted in a similar manner by those skilled in the art without departing from the scope of the invention as defined in the appending claims. It should be understood by those skilled in the art that any modifications, equivalents, improvements and the like made to the above embodiments in accordance with the technical spirit of the present invention are included in the scope of the present invention.
Claims (4)
1. A method for treating sulfide ore mine wastewater by using pyrite is characterized in that the sulfide ore mine wastewater contains a sulfide ore collecting agent, and the method comprises the following steps: crushing and grinding the pyrite, and then fully contacting and reacting the obtained pyrite particles with the sulfide mine wastewater for a period of time, so that the degradation of the sulfide collecting agent in the wastewater is accelerated, and the requirement of industrial discharge or recycling is met.
2. The method for treating the sulfide ore mine wastewater by using the pyrite according to claim 1, wherein the pyrite is 1 or more of natural pyrite, marcasite, pyrrhotite or artificially synthesized minerals.
3. The method for treating the sulfide ore mine wastewater by using the pyrite according to claim 1, wherein the sulfide ore collector is 1 or more of a xanthate collector, a sulfur-nitrogen collector, a thiamine ester collector, a black-chemical collector, a thiol collector and derivatives thereof.
4. The method for treating the sulfide ore mine wastewater by using the pyrite according to claim 1, wherein the crushing and grinding of the pyrite is to grind the pyrite to a particle size of 1mm or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211129384.8A CN115417483B (en) | 2022-09-16 | 2022-09-16 | Method for treating sulfide ore mine wastewater by using pyrite |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211129384.8A CN115417483B (en) | 2022-09-16 | 2022-09-16 | Method for treating sulfide ore mine wastewater by using pyrite |
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| Publication Number | Publication Date |
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| CN115417483A true CN115417483A (en) | 2022-12-02 |
| CN115417483B CN115417483B (en) | 2024-04-02 |
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|---|---|---|---|---|
| US20130025410A1 (en) * | 2010-01-22 | 2013-01-31 | Rosanna GINOCCHIO CEA | Collector and frothing agent for flotation based on organic residues to recover metals from minerals by froth flotation, collector and frothing agent recovery process and foaming flotation process that uses the collector and frothing agent |
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2022
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| CN115417483B (en) | 2024-04-02 |
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