CN107470033B - Method for controlling flotation pollution of zinc sulfide minerals and iron sulfide minerals from source - Google Patents
Method for controlling flotation pollution of zinc sulfide minerals and iron sulfide minerals from source Download PDFInfo
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- CN107470033B CN107470033B CN201710645214.8A CN201710645214A CN107470033B CN 107470033 B CN107470033 B CN 107470033B CN 201710645214 A CN201710645214 A CN 201710645214A CN 107470033 B CN107470033 B CN 107470033B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/02—Froth-flotation processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B1/00—Conditioning for facilitating separation by altering physical properties of the matter to be treated
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/002—Inorganic compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/06—Depressants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2203/00—Specified materials treated by the flotation agents; specified applications
- B03D2203/02—Ores
- B03D2203/04—Non-sulfide ores
- B03D2203/06—Phosphate ores
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Abstract
a method for controlling flotation pollution of zinc sulfide minerals and iron sulfide minerals from a source, which is characterized by comprising the following steps: grinding minerals containing zinc sulfide and iron sulfide, grinding the minerals until the particle size of the minerals reaches 60-95% of the total volume of the minerals, adding water to prepare ore pulp with the solid content of 25-50%, arranging a flotation principle flow according to the sequence of natural floatability of the zinc sulfide minerals and the iron sulfide minerals, and performing flotation separation of the zinc sulfide and the iron sulfide minerals in the sequence of flotation of the zinc sulfide minerals and then flotation of the iron sulfide minerals; lime is not added in the operation of floating the zinc sulfide minerals, and the zinc sulfide minerals are floated by adopting a light inhibition method; in the operation of flotation of the iron sulfide minerals, sulfuric acid or hydrochloric acid is not added, and the iron sulfide minerals are floated by adopting a light activation method.
Description
Technical Field
The invention relates to a clean production process method for flotation, in particular to a clean production process method for flotation separation of zinc sulfide minerals and iron sulfide minerals based on pollution source control, which solves the problems that the pH value of concentrate and tailing water is up to more than 12, the concentrate and tailing water can reach the standard and be discharged after being adjusted by adding acid, and the content of heavy metal ions such as lead, zinc, cadmium and the like in the tailing water seriously exceeds the standard, which is based on pollution source control, and belongs to the technical field of mineral processing flotation.
background art:
Two common flotation separation methods for zinc sulfide minerals and iron sulfide minerals at home and abroad are provided, wherein one method is a preferential flotation process, lime is added to adjust the pH value of ore pulp to be more than 12 so as to inhibit the iron sulfide minerals, an activating agent and a collecting agent are added to float the zinc sulfide minerals, then the pH value of the ore pulp is adjusted to be neutral or even acidic by sulfuric acid for zinc flotation tailings so as to activate the inhibited iron sulfide minerals, and the collecting agent is used for floating the zinc sulfide minerals; the other is a mixed flotation process, namely, under the condition of not adding lime or adding a small amount of lime, zinc sulfide minerals and iron sulfide minerals are simultaneously floated into mixed concentrate by using an activating agent and a collecting agent, and then the mixed concentrate is inhibited and the zinc sulfide minerals are floated under the condition of adding a large amount of lime (the pH value reaches more than 12).
the two methods for separating the zinc sulfide minerals and the iron sulfide minerals by flotation both need to use a large amount of lime in the production process (for example, the amount of lime used in lead zinc ore of Kangjiawan in the water gap is 5-6 kg/ton of raw ore, the amount of lime used in lead zinc ore of Huangshapingwan is 10-13 kg/ton of raw ore, and the amount of lime used in lead zinc ore of Huangshapingwan is 11-15 kg/ton of raw ore), although the two methods have long production history, mature and reliable process and can obtain stable separation effect, the accompanying defects are many, besides the problems that lime milk is difficult to prepare and a pipeline added with the lime milk is easy to scale and block, the method also has a serious environmental pollution problem, and is mainly represented as the following steps:
(1) The pH of the tail water exceeds the standard. The pH value of water removed from zinc sulfide concentrate, iron sulfide concentrate and tailings obtained by a lime process is usually over 12 and seriously exceeds the industrial wastewater discharge standard of pH6-9, and acid is added into tail water for neutralization in a wastewater treatment station; the amount of acid added is often not properly controlled, the pH value of the aqueous solution is adjusted to be below 6, and the pH value is adjusted to be neutral by adding alkali reversely. Therefore, how to adjust the pH value of the wastewater to the standard range of 6-9 becomes a problem that operators and managers on the site often feel headache.
(2) The contents of heavy metal ions and COD in the tail water exceed the standard. The pH value of water removed from zinc sulfide concentrate, iron sulfide concentrate and tailings obtained by a lime process is usually over 12, so that the content of heavy metal pollution factors such as lead, zinc, cadmium, sulfur and the like and the content of COD in the tailings are often out of standard.
In the traditional mine industry, extensive development modes are adopted in the past decades, and most of the measures are 'terminal treatment' for treating pollution after the pollution is generated, but all trades around the world pay more attention to clean production, and the environment protection work is promoted to be changed from the past single terminal treatment to a clean production process controlled by a pollution source. Like the problem that the pH value of tail water and heavy metal ions are polluted due to the fact that lime is used in the flotation separation process of zinc sulfide minerals and iron sulfide minerals, in the past, tail water is regulated by adding acid, heavy metal ions are removed by a heavy metal collector, and other terminal treatment measures are adopted, few people think of the root causes of the problems, and the problems are caused by the fact that a large amount of lime is used in the production process. Because the production method of adding lime to perform flotation separation of zinc sulfide minerals and iron sulfide minerals has long history, mature and reliable process, stable separation effect, wide lime source and low price, in the past, in the era of less environmental protection importance, few people think whether to realize pollution source control without adding lime, so that the pollution of flotation is increasingly serious, and the improvement is very necessary.
Patent documents in which the same technology as that of the present invention is not found through patent search are reported, and the following patents which have a certain relationship with the present invention are mainly included:
1. The patent number CN201610842051.8, entitled "a method for direct flotation of zinc sulfide ore", discloses a method for direct flotation of zinc sulfide ore, grinding zinc sulfide ore into ore pulp, adjusting the pH value of the ore pulp to 6-11, adding collecting agent sodium N-alkyl dithiocarbamate and foaming agent terpineol oil, and adding no or little activating agent copper sulfate for flotation. The method can realize the copper-free activation direct flotation of the zinc sulfide ore or obviously reduce the dosage of copper sulfate, and is beneficial to the subsequent flotation separation of zinc sulfide and other metal sulfide ores.
2. Patent No. cn201510862686.x entitled "a process for recovering zinc oxide from zinc sulfide flotation tailings", discloses a process for recovering zinc oxide from zinc sulfide flotation tailings, comprising the steps of: (1) concentrating the high-alkalinity zinc sulfide flotation tailings to 45 wt%, adding 800g/t-1200 g/citric acid, and stirring for reaction for 10-15 minutes. (2) Adding 2-3kg/t of sodium sulfide, stirring for reaction for 5 minutes, and then adding clear water to dilute the concentration to 30 wt%. (3) Adding 300g/t of stearic-primary amine acetate, and stirring for reaction for 5 minutes; (4) adding 160g/t No. 2 oil 120, stirring and reacting for 3 minutes, wherein the pH value of the ore pulp is 8.5-9.5. And (5) starting inflation and froth scraping flotation to obtain a high-quality zinc oxide product.
3. The patent number is CN200810214844.0, is named as the invention patent of 'a flotation method of iron sulfide ore', and discloses a flotation method of iron sulfide ore, belonging to the technical field of ore dressing. The method is characterized in that after the flotation of the nonferrous metal sulphide ore, under the condition of alkaline ore pulp, ammonium salt and sulfide are added as activating agents, collecting agent xanthate and foaming agent pine oil are added, and the iron sulphide ore is floated after stirring. In the flotation process, the addition amount of an activator ammonium salt is 6-120 mol/t of raw ore, the addition amount of an activator sulfide is 6-36 mol/t of raw ore, the addition amount of a collector xanthate is 500g/t of raw ore, and the addition amount of a foaming agent pine oil is 50g/t of raw ore. The method can improve the surface property and the flotation condition of the iron sulfide ore, accelerate the upward floating speed of the iron sulfide ore, improve the recovery rate and the concentrate grade of the iron sulfide ore, reduce the consumption of flotation reagents and reduce the production cost.
Although the patents mentioned above relate to the flotation of iron or zinc sulfide, it can be seen from the reading of the patent that the patents are irrelevant to the problem to be solved by the present invention, and the technical solutions disclosed therein are still flotation using lime, and no flotation treatment solution using no lime is proposed, so that the problems mentioned above still exist and still need to be further improved.
Disclosure of Invention
The invention aims to provide a clean production process method for flotation separation of zinc sulfide and iron sulfide ore based on pollution source control aiming at the problems of the existing flotation separation method for zinc sulfide ore and iron sulfide ore.
In order to achieve the purpose, the invention provides a method for controlling flotation pollution of zinc sulfide minerals and iron sulfide minerals from a source, the minerals containing the zinc sulfide and the iron sulfide are ground to be in a range of 60% -95% of the total volume of the minerals after the minerals are ground to be less than 0.074mm, water is added to prepare ore pulp with the solid content of 25% -50%, a flotation principle flow is arranged according to the sequence of strong and weak natural floatability of the zinc sulfide minerals and the iron sulfide minerals, and the flotation separation of the zinc sulfide and the iron sulfide minerals is carried out in the sequence of firstly floating the zinc sulfide minerals and then floating the iron sulfide minerals; lime is not added in the operation of floating the zinc sulfide minerals, and the zinc sulfide minerals are floated by adopting a light inhibition method; in the operation of flotation of the iron sulfide minerals, sulfuric acid or hydrochloric acid is not added, and the iron sulfide minerals are floated by adopting a light activation method.
Further, the zinc sulfide mineral flotation by adopting a light inhibition method comprises the following steps: when the zinc sulfide minerals are floated, the light inhibitor is adopted to replace lime to serve as the inhibitor of the iron sulfide minerals, the pH value of flotation ore pulp is controlled within the neutral range of 6-9, and the zinc sulfide minerals are floated.
Further, the light inhibitor is one or a mixture of more of non-metal acid salt and oligomer thereof, monothio-non-metal acid salt and oligomer thereof, dithio-non-metal acid salt and oligomer thereof, tri-substituted non-metal acid salt and oligomer thereof, and tetrathio-non-metal acid salt and oligomer thereof; non-metal acid salt and oligomer thereof, monothio-non-metal acid salt and oligomer thereof, dithio-non-metal acid salt and oligomer thereof, trithio-non-metal acid salt and oligomer thereof, tetrathio-non-metal acid salt and oligomer thereof are mixed together according to any weight ratio.
further, the iron sulfide mineral flotation by adopting the light activation method comprises the following steps: the light activator used for the flotation of the iron sulfide minerals replaces sulfuric acid or hydrochloric acid to be used as the activator of the iron sulfide minerals, and the pH value of the flotation pulp is controlled within the neutral range of 6-9 in a mode of not adding the sulfuric acid or the hydrochloric acid, so that the iron sulfide minerals are floated.
further, the activating agent is one or a mixture of copper sulfate, silver sulfate, ammonium sulfate, copper nitrate, silver nitrate and ammonium nitrate.
Furthermore, the flotation principle flow is arranged according to the sequence of the natural floatability of the zinc sulfide minerals and the iron sulfide minerals, wherein the zinc sulfide minerals are preferentially floated firstly, and then the iron sulfide minerals are floated, so that zinc sulfide concentrate and iron sulfide concentrate are obtained respectively; the zinc sulfide mineral flotation operation and the iron sulfide mineral flotation operation adopt a primary roughing, a scavenging and a fine concentration process; in the zinc sulfide flotation operation, the lime dosage is zero, and a light inhibitor is adopted to inhibit iron sulfide minerals, wherein the dosage is 300 g/t; in the flotation operation of the ferric sulfide, the dosage of sulfuric acid or hydrochloric acid is zero, and a light activator is adopted, and the dosage is 80 g/t; the pH value of the obtained zinc sulfide concentrate, iron sulfide concentrate and tailing dewatering water is in a neutral range of 6-9.
The invention has the advantages that:
1. the process of the invention adopts a light inhibition method without adding lime to inhibit the iron sulfide minerals from floating the zinc sulfide minerals, and the pH value of the ore pulp in the operation of floating the zinc sulfide minerals is obviously different from the pH value of the ore pulp in the operation of floating the zinc sulfide minerals by using the known lime as the inhibitor of the iron sulfide minerals, which is up to more than 12 and is in a neutral range of 6-9.
2. The process of the invention adopts a light activation method without adding sulfuric acid or hydrochloric acid to float the iron sulfide minerals, and the pH value of the ore pulp in the operation of floating the iron sulfide minerals is obviously different from the pH value of the ore pulp in the known iron sulfide mineral flotation operation after the zinc sulfide minerals are floated and is lower than 6, and is in a neutral range of 6-9.
3. The process adopts a light inhibition method without adding lime to inhibit the iron sulfide minerals from floating the zinc sulfide minerals, and the pH value of the ore pulp in the zinc sulfide mineral floating operation is in a neutral range of 6-9, so that the pH value of the dewatering water of the zinc sulfide concentrate pulp obtained in the zinc sulfide mineral floating operation is obviously different from the pH value of the dewatering water of the zinc sulfide concentrate pulp obtained in the known zinc sulfide concentrate pulp obtained in the zinc sulfide mineral floating operation by adopting lime as an iron sulfide inhibitor, and is in the neutral range of 6-9.
4. The process adopts a light activation mode without adding sulfuric acid or hydrochloric acid to float the iron sulfide minerals, and the pH value of the ore pulp in the operation of floating the iron sulfide minerals is in a neutral range of 6-9, so that the pH value of the water removed from the iron sulfide concentrate pulp and the tailing pulp obtained in the operation of floating the iron sulfide minerals is obviously different from the pH value of the water removed from the iron sulfide concentrate pulp and the tailing pulp obtained in the known operation of adding lime to inhibit the iron sulfide minerals from floating the iron sulfide minerals and then adding acid to activate the iron sulfide minerals, which is obviously lower than 6 and is in the neutral range of 6-9.
5. The concentrated ore pulp of iron sulfide obtained by the process is flotation foam ore pulp, the concentration of the ore pulp is higher than 40%, zinc sulfide and iron sulfide minerals are subjected to mixed flotation under the neutral condition that the pH value of the ore pulp without lime is 6-9 in the prior art, then the mixed concentrate of the zinc sulfide and the iron sulfide minerals is subjected to inhibition on the iron sulfide minerals under the high-alkali condition that the pH value of the ore pulp with lime is higher than 12, the concentrated ore pulp of iron sulfide obtained by the flotation separation process for the zinc sulfide minerals is in-tank ore pulp, and the concentration of the ore pulp is lower than 25%, so that the ore pulp concentration is obviously different.
the invention brings the following advantages:
Firstly, lime is omitted in the whole process, so that the cost of beneficiation reagents can be saved;
Lime is eliminated in the whole process, so that a position for washing and preparing lime can be omitted, labor of a selecting factory is saved, and the manpower resource cost of mineral separation production is reduced;
Thirdly, lime is not added in the whole process, so that the problems that lime milk is difficult to prepare and production indexes are affected by easy scaling and blockage of pipelines added with the lime milk are solved;
Fourthly, sulfuric acid or hydrochloric acid is not needed to be added in the flotation operation of the iron sulfide minerals, so that the problem that the sulfuric acid and the hydrochloric acid are easy to prepare drugs and are very troublesome to use and examine and approve in some places is solved;
fifthly, the pH value of the water removed from the concentrate and the tailings is in a neutral range of 6-9 of the standard discharge standard, the heavy metal ion content and COD content in the water removed from the concentrate and the tailings are lower than those in the traditional lime adding process, and even the heavy metal ion content and COD content in the water removed from the concentrate and the tailings are lower than the discharge standard without any treatment.
drawings
FIG. 1 is a flow chart of the flotation separation clean production process of zinc sulfide and iron sulfide ore based on pollution source control according to the invention;
FIG. 2 is a flow chart of the conventional process for separating the zinc sulfide minerals and the iron sulfide minerals by flotation.
Detailed Description
The following further describes the embodiments of the present invention with reference to examples, but the examples are not intended to limit the present invention.
Example one
Some zinc sulfide ore contains 4.9% of zinc and 11% of sulfur.
According to the invention shown in fig. 1, a closed-loop process test is carried out by a test flow of preferentially floating zinc sulfide minerals and then floating iron sulfide minerals to obtain zinc sulfide concentrates and iron sulfide concentrates respectively, the zinc sulfide mineral flotation operation and the iron sulfide mineral flotation operation both adopt a primary roughing, primary scavenging and primary concentration flow structure, 5 circulating closed-loop process tests are carried out altogether, and the average value of the test results of the 4 th round and the 5 th round is taken as the final test result, which is shown in table 1.
Table 1 example test results of a clean production process for flotation separation of zinc sulfide and iron sulfide minerals based on pollution source control
Example two
Example two is a comparative example of the present invention, a comparative example of a conventional lime-added zinc sulfide flotation followed by iron sulfide flotation for the same ore sample used in example one
A closed-loop flow test is carried out according to the test flow shown in fig. 2, in which zinc sulfide minerals are floated first and then iron sulfide minerals are floated, so as to obtain zinc sulfide concentrates and iron sulfide concentrates respectively, the zinc sulfide mineral flotation operation and the iron sulfide mineral flotation operation both adopt a structure of primary roughing, primary scavenging and primary concentration flow, 5 cycles of closed-loop flow tests are carried out altogether, and the average value of the test results of the 4 th round and the 5 th round is taken as the final test result, which is shown in table 2.
Table 2 example 2 results of sequential flotation separation of certain limed zinc sulphide minerals and iron sulphide minerals
EXAMPLE III
example three is a control of the conventional lime-added zinc sulfide and iron sulfide ore bulk flotation re-separation process for the same ore sample used in example 1.
A closed-loop process test is carried out according to a mixed flotation and separation test process to respectively obtain zinc sulfide concentrate and iron sulfide concentrate, the mixed flotation operation and the separation flotation operation adopt a primary roughing, primary scavenging and primary concentration process structure, 5 circulating closed-loop process tests are carried out together, and the average value of the test results of the 4 th round and the 5 th round is taken as the final test result, which is shown in Table 3.
Table 3 example 3 results of certain lime-added zinc sulfide mineral and iron sulfide mineral co-flotation re-separation tests
By analyzing the water quality of the concentrate and tailing filtration of example 1, example 2 and example 3, the obtained zinc sulfide concentrate filtration water, iron sulfide concentrate filtration water and tailing filtration water were subjected to water quality analysis, and the results are shown in table 4.
Table 4 comparison of product filtered water quality for non-lime separation process with product filtered water quality for conventional lime separation process
As can be seen from table 4, the pH of the filtered water of the zinc sulfide concentrate obtained in the experimental process of first floating the zinc sulfide mineral and then floating the iron sulfide mineral in example 2 was as high as about 13, and the pH of the filtered water of the zinc sulfide concentrate and the filtered water of the iron sulfide concentrate obtained in the experimental process of mixing, floating and separating the zinc sulfide and the iron sulfide mineral in example 3 was as high as 12.5 or more, but the pH of the filtered water of the zinc sulfide concentrate and the filtered water of the iron sulfide concentrate obtained in example 1 was in a neutral range of about 8 by using the process of floating and separating the zinc sulfide mineral and the iron sulfide mineral in pentalime. The zinc sulfide concentrate filtered water obtained by the conventional lime flotation process in example 2 and the iron sulfide concentrate filtered water obtained by the conventional lime flotation process in example 3 both have pH values, lead, zinc, COD and S contents exceeding the national discharge standards, but the zinc sulfide concentrate filtered water and the iron sulfide concentrate filtered water obtained by the lime-free separation process have pollution factors within the discharge standards, which indicates that the zinc sulfide concentrate and the iron sulfide concentrate filtered water obtained by the lime-free separation process have much cleaner water quality than the zinc sulfide concentrate and the iron sulfide concentrate filtered water obtained by the conventional lime flotation process.
It is to be clearly understood that this is done by way of illustration and not as a limitation on the scope of the invention, and that all equivalent modifications of the invention which fall within the limits of the claims set out below will occur to those skilled in the art upon reading the present invention.
The invention has the advantages that:
the invention brings the following advantages:
Firstly, lime is omitted in the whole process, so that the cost of beneficiation reagents can be saved;
Lime is cancelled in the whole process, so that a position for washing and preparing lime can be omitted, labor of a selecting factory position is saved, and the manpower resource cost of mineral separation production is reduced;
Thirdly, lime is not added in the whole process, so that the problems that lime milk is difficult to prepare and production indexes are affected by easy scaling and blockage of pipelines added with the lime milk are solved;
Fourthly, sulfuric acid or hydrochloric acid is not needed to be added in the flotation operation of the iron sulfide minerals, so that the problem that the sulfuric acid and the hydrochloric acid are easy to prepare drugs and are very troublesome to use and examine and approve in some places is solved;
Fifthly, the pH value of the water removed from the concentrate and the tailings is in a neutral range of 6-9 of the standard discharge standard, the heavy metal ion content and COD content in the water removed from the concentrate and the tailings are lower than those in the traditional lime adding process, and even the heavy metal ion content and COD content in the water removed from the concentrate and the tailings are lower than the discharge standard without any treatment.
Claims (5)
1. A method for controlling flotation pollution of zinc sulfide minerals and iron sulfide minerals from a source, which is characterized by comprising the following steps: grinding minerals containing zinc sulfide and iron sulfide, grinding the minerals until the particle size of the minerals reaches 60-95% of the total volume of the minerals, adding water to prepare ore pulp with the solid content of 25-50%, arranging a flotation principle flow according to the sequence of natural floatability of the zinc sulfide minerals and the iron sulfide minerals, and performing flotation separation of the zinc sulfide and the iron sulfide minerals in the sequence of flotation of the zinc sulfide minerals and then flotation of the iron sulfide minerals; lime is not added in the operation of floating the zinc sulfide minerals, and the zinc sulfide minerals are floated by adopting a light inhibition method; in the operation of flotation of the iron sulfide minerals, sulfuric acid or hydrochloric acid is not added, and the iron sulfide minerals are floated by adopting a light activation method; the flotation principle flow is arranged according to the sequence of the natural floatability of the zinc sulfide minerals and the iron sulfide minerals, the zinc sulfide minerals are preferentially floated firstly, and then the iron sulfide minerals are floated, so that zinc sulfide concentrate and iron sulfide concentrate are obtained respectively; the zinc sulfide mineral flotation operation and the iron sulfide mineral flotation operation adopt a primary roughing, a scavenging and a fine concentration process; in the zinc sulfide flotation operation, the lime dosage is zero, and a light inhibitor is adopted to inhibit iron sulfide minerals, wherein the dosage is 300 g/t; in the flotation operation of the ferric sulfide, the dosage of sulfuric acid or hydrochloric acid is zero, and a light activator is adopted, and the dosage is 80 g/t; the pH value of the obtained zinc sulfide concentrate, iron sulfide concentrate and tailing dewatering water is in a neutral range of 6-9.
2. the method of controlling flotation contamination of zinc sulfide minerals and iron sulfide minerals from a source as recited in claim 1, wherein: the flotation of the zinc sulfide minerals by adopting a light inhibition method comprises the following steps: when the zinc sulfide minerals are floated, the light inhibitor is adopted to replace lime to serve as the inhibitor of the iron sulfide minerals, the pH value of flotation ore pulp is controlled within the neutral range of 6-9, and the zinc sulfide minerals are floated.
3. the method of controlling flotation contamination of zinc sulfide minerals and iron sulfide minerals from a source as recited in claim 2, wherein: the light inhibitor is one or a mixture of more of non-metal acid salt and oligomer thereof, monothio non-metal acid salt and oligomer thereof, dithio non-metal acid salt and oligomer thereof, tri-substituted non-metal acid salt and oligomer thereof, and tetrathio non-metal acid salt and oligomer thereof; non-metal acid salt and oligomer thereof, monothio-non-metal acid salt and oligomer thereof, dithio-non-metal acid salt and oligomer thereof, trithio-non-metal acid salt and oligomer thereof, tetrathio-non-metal acid salt and oligomer thereof are mixed together according to any weight ratio.
4. The method of controlling flotation contamination of zinc sulfide minerals and iron sulfide minerals from a source as recited in claim 1, wherein: the iron sulfide mineral flotation by adopting a light activation method comprises the following steps: the light activator used for the flotation of the iron sulfide minerals replaces sulfuric acid or hydrochloric acid to be used as the activator of the iron sulfide minerals, and the pH value of the flotation pulp is controlled within the neutral range of 6-9 in a mode of not adding the sulfuric acid or the hydrochloric acid, so that the iron sulfide minerals are floated.
5. The method of controlling flotation contamination of zinc sulfide minerals and iron sulfide minerals from a source as recited in claim 4, wherein: the activating agent is one or a mixture of copper sulfate, silver sulfate, ammonium sulfate, copper nitrate, silver nitrate and ammonium nitrate.
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| CN113262884A (en) * | 2020-10-28 | 2021-08-17 | 水口山有色金属有限责任公司 | Lime-free mineral separation process for lead-zinc raw ore |
| CN115888988A (en) * | 2022-12-28 | 2023-04-04 | 湖南有色黄沙坪矿业有限公司 | Beneficiation method for high-sulfur high-carbon lead-zinc ore under natural pH condition |
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| JP4129499B2 (en) * | 2000-08-08 | 2008-08-06 | Ｄｏｗａメタルマイン株式会社 | Method for recovering sulfur from minerals |
| CN1147365C (en) * | 2001-05-29 | 2004-04-28 | 周源 | Copper-sulfur separating process without lime |
| CN101623674A (en) * | 2009-08-03 | 2010-01-13 | 北京矿冶研究总院 | Method for floating inhibited iron sulfide minerals |
| CN102698878A (en) * | 2012-05-30 | 2012-10-03 | 西北矿冶研究院 | Pyrite inhibitor used under low-alkalinity condition |
| CN103157560B (en) * | 2013-03-29 | 2014-08-27 | 云南金鼎锌业有限公司 | Flotation method of vulcanizing lead and zinc by weak acid full pulp |
| CN103657870B (en) * | 2013-12-03 | 2016-02-10 | 安徽朝山新材料股份有限公司 | A kind of auriferous pyrite capture reagent for gold and preparation method thereof |
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