CN113102110B - Inhibitor for sorting molybdenum-bismuth ore and application thereof - Google Patents
Inhibitor for sorting molybdenum-bismuth ore and application thereof Download PDFInfo
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- CN113102110B CN113102110B CN202110408453.8A CN202110408453A CN113102110B CN 113102110 B CN113102110 B CN 113102110B CN 202110408453 A CN202110408453 A CN 202110408453A CN 113102110 B CN113102110 B CN 113102110B
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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
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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
- B03B1/04—Conditioning for facilitating separation by altering physical properties of the matter to be treated by additives
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention relates to an inhibitor for separating molybdenum-bismuth ore and an application method thereof. Firstly, introducing an oxidant into flotation pulp, selectively oxidizing the surface of bismuth mineral, and forming free bismuth ions on the surface of the bismuth mineral; then introducing a chlorine-containing compound, and forming a hydrophilic bismuth oxychloride layer on the surface of the bismuth mineral through the complexing hydrolysis action of bismuth ions and chloride ions, thereby achieving the purpose of inhibiting the bismuth mineral from floating. When the inhibitor is used in the separation operation of molybdenum-bismuth ore, the inhibitor has stronger inhibiting effect and better selectivity than the inhibiting effect of the traditional inhibitor, and can fully separate molybdenum ore from bismuth ore and improve the flotation index of molybdenum concentrate. The method has simple operation, avoids the defects of large dosage, severe operation environment, serious environmental pollution and harm to human bodies of the traditional toxic inhibitors, simplifies the flotation process, reduces the flotation reagent and the reagent dosage, has good separation effect and small environmental pollution, and is convenient for industrialized application.
Description
Technical Field
The invention belongs to the technical field of non-ferrous metal ore dressing, and particularly relates to an inhibitor for separating molybdenum-bismuth ore and an application method thereof.
Background
Along with the development of society, the utilization rate of mineral resources is increased day by day, the properties of ores are more and more complex, and the difficulty of ore dressing technology is more and more large. The molybdenum-bismuth ore belongs to ore with very complex symbiotic relationship, and the minerals are difficult to separate due to similar floatability, fine embedded particle size and poor monomer dissociation. Currently, the most common method for separating molybdenum from bismuth is to suppress molybdenum floating in bismuth. Common bismuth inhibitors mainly include sulfides (sodium sulfide, sodium hydrosulfide, ammonium sulfide, etc.), nocks, sodium thioglycolate, hydrogen peroxide, trihydroxybenzene, etc. Among them, sodium sulfide is widely used industrially as the most successful bismuth inhibitor. HS produced by hydrolysis thereof - The collecting agent adsorbed on the surface of the bismuth mineral is extruded and adsorbed on the surface of the bismuth mineral,increasing the hydrophilicity of the surface of the bismuth mineral, thereby achieving the effect of inhibiting the bismuth mineral. However, when in use, the dosage of sodium sulfide is higher, and the dosage of the medicament in industrial production is usually more than 50kg/t, which causes higher production cost. Meanwhile, harmful gas hydrogen sulfide is generated in the using process, so that not only can serious environmental pollution be caused, but also the life health of operators can be seriously threatened. The Nox reagent is a non-molybdenum sulfide ore inhibitor developed by Nox et al in the 50 th century, has good selectivity and strong inhibition, but because the reagent contains harmful elements such as phosphorus, arsenic and the like, the environment is polluted, so the reagent is forbidden at home and abroad at present. Organic matters such as sodium thioglycolate and trihydroxybenzene also have good inhibition effect on bismuth, but have strong pungent smell, so the requirements on operation and production workshop infrastructure are high when the bismuth-containing composite material is used. The hydrogen peroxide has strong oxidizability, and can corrode production equipment while inhibiting target minerals, so that the hydrogen peroxide is rarely used for separating the molybdenum-bismuth ore industrially.
Therefore, the bismuth inhibitor with excellent performance, environmental friendliness and simple operation is developed, not only accords with the current national policy of energy conservation and environmental protection, but also improves the high-efficiency comprehensive recycling of mineral resources, and creates more economic benefits for enterprises while solving the problem of difficult production. At present, a flotation technology for inhibiting bismuth-containing minerals to separate molybdenum and bismuth by adopting a chlorine complex oxidation method is rarely reported in relevant documents.
Disclosure of Invention
The invention aims to provide a molybdenum-bismuth ore separation technology which can be used under the conventional flotation condition, is efficient and environment-friendly, has wide sources, small dosage and good stability and can be applied to industrial production.
The invention relates to an inhibitor for separating molybdenum-bismuth ore, which comprises an oxidant and chlorine. The invention introduces oxidant and chlorine element into the molybdenum-bismuth ore pulp; the bismuth is inhibited in the flotation process by using the introduced oxidant and chlorine; thereby realizing the separation of molybdenum and bismuth.
The invention relates to the application of an inhibitor for separating molybdenum-bismuth ore; the separation of bismuth and molybdenum is realized in the flotation process of molybdenum-bismuth ore by a chlorine complex oxidation method. In the invention, the chlorine complex oxidation method is applied to the flotation of the bismuth-containing minerals to inhibit the flotation of the bismuth-containing minerals, so as to achieve the purpose of separating the molybdenum minerals from other bismuth-containing minerals.
The invention relates to the application of an inhibitor for separating molybdenum-bismuth ore; the implementation comprises the following steps:
s1, adjusting the concentration of the molybdenum-bismuth ore pulp;
s2, adding a certain amount of oxidant into the ore pulp, and stirring;
s3, adding a certain amount of chlorine-containing compound into the ore pulp, and stirring;
s4, adding a molybdenum collecting agent and a foaming agent into the ore pulp, respectively stirring for 3min, and then performing flotation separation;
or comprises the following steps:
step 1, adjusting the concentration of the molybdenum-bismuth ore pulp;
and 3, adding a molybdenum collecting agent and a foaming agent into the ore pulp, stirring and then carrying out flotation separation.
The invention relates to the application of an inhibitor for separating molybdenum-bismuth ore; the bismuth-containing mineral in the bismuth-molybdenum ore is at least one selected from bismuth sillimanite, bismuth magnesium ore, bismuth chabazite, bismuth copper ore and bismuth galena.
The invention relates to the application of an inhibitor for separating molybdenum-bismuth ore; the molybdenum mineral in the molybdenite is at least one of molybdenite, calcium molybdate ore, wulfenite, molybdenite and blue-molybdenum ore.
The invention relates to the application of an inhibitor for separating molybdenum-bismuth ore; s1 or the concentration of the molybdenum-bismuth ore pulp prepared in the step 1 is 1-50%, preferably 15-45%, and more preferably 25-35%;
s2, adding a certain amount of oxidant into the ore pulp, and stirring for at least 1min, preferably 1-30 min;
s3, adding a certain amount of chlorine-containing compound into the ore pulp, and stirring for at least 1min, preferably 1-30 min;
s4, adding a molybdenum collecting agent and a foaming agent into the ore pulp, respectively stirring for at least 1min, preferably 2-5 min, and then carrying out flotation separation;
and 3, adding a molybdenum collecting agent and a foaming agent into the ore pulp, respectively stirring for at least 1min, preferably 2-5 min, and then carrying out flotation separation.
The invention relates to the application of an inhibitor for separating molybdenum-bismuth ore; the oxidant in the S1 is oxygen or/and gas with ozone content more than 1%. Ozone is preferred, and the ozone content is more than 20% is more preferred.
The invention relates to the application of an inhibitor for separating molybdenum-bismuth ore; the chlorine-containing compound in S1 comprises at least one of chlorine, sodium chloride, sodium hypochlorite, sodium chlorite, sodium chlorate, sodium perchlorate, potassium chloride, potassium hypochlorite, potassium chlorite, potassium chlorate, potassium perchlorate, calcium hypochlorite, hypochlorous acid, hydrochloric acid, chloroform, calcium chloride, potassium chloride, ferric chloride, magnesium chloride, aluminum chloride and copper chloride. Preferred are hypochlorous acid, sodium hypochlorite, calcium hypochlorite, and potassium hypochlorite, and more preferred is calcium hypochlorite.
The invention relates to the application of an inhibitor for separating molybdenum-bismuth ore; the chlorine-containing compound having an oxidizing ability in step 2 is at least one selected from chlorine gas, sodium hypochlorite, sodium chlorite, sodium chlorate, sodium perchlorate, potassium hypochlorite, potassium chlorite, potassium chlorate, potassium perchlorate, calcium hypochlorite, hypochlorous acid, and chloroform. Preferred are hypochlorous acid, sodium hypochlorite, calcium hypochlorite, and potassium hypochlorite, and more preferred is calcium hypochlorite.
The invention relates to the application of an inhibitor for separating molybdenum-bismuth ore; the adding amount of the oxidant is 0 to 10000g/t per ton of ore feeding. Preferably 200 to 500g/t. Exceeding this range will destroy the floatability of the mineral, resulting in a decrease in the recovery rate of valuable metals.
The invention relates to the application of an inhibitor for separating molybdenum-bismuth ore; and in the S3 or the step 2, the adding amount of the chlorine-containing compound is 300-10000 g/t per ton of ore. Preferably 300 to 5000g/t. If the dosage is less than the range, the inhibition effect is insufficient, and minerals cannot be separated; exceeding this range will destroy the floatability of the mineral, resulting in a decrease in the recovery rate of valuable metals.
The invention relates to the application of an inhibitor for separating molybdenum-bismuth ore; and S4 or in the third step, the molybdenum collecting agent is at least one of kerosene and diesel oil.
The invention relates to the application of an inhibitor for separating molybdenum-bismuth ore; s4 or in the third step, the foaming agent is at least one of terpineol oil and methyl isobutyl carbinol; the adding amount of the molybdenum collecting agent is 100-10000 g/t, preferably 50-500 g/t, per ton of ore feeding; the amount of the blowing agent added is 5 to 500g/t, preferably 10 to 100g/t.
Preferably, in the application of the inhibitor for separating the molybdenum-bismuth ore, the chlorine-containing compound can be directly added or added in a liquid preparation manner.
Preferably, the invention relates to the application of the inhibitor for separating the molybdenum-bismuth ore; the flotation reagent may be used in the form of any one of a pure solid, a pure liquid, and a solution of different concentrations.
In the beneficiation process, the fineness of the raw materials, the dosage system of the collecting agent and the foaming agent and the control of related parameters in the prior art can be consistent.
The reagents and gases (except air) adopted by the invention belong to the conventional reagents and gases sold on the market.
The chlorine complex oxidation method is that firstly, an oxidant is introduced into flotation pulp, the surface of bismuth mineral is selectively oxidized, and free bismuth ions are formed on the surface of the bismuth mineral; then introducing a chlorine-containing compound, and forming a hydrophilic bismuth oxychloride layer on the surface of the bismuth mineral through the complexing hydrolysis action of bismuth ions and chloride ions, thereby achieving the purpose of inhibiting the bismuth mineral from floating. When the inhibitor is used in the separation operation of molybdenum-bismuth ore, the inhibitor has stronger inhibiting effect and better selectivity than the inhibiting effect of the traditional inhibitor, and can fully separate molybdenum ore from bismuth ore and improve the flotation index of molybdenum concentrate. The chlorocomplex oxidation method has simple operation, avoids the defects of large dosage, severe operation environment, serious environmental pollution and harm to human bodies of the traditional toxic inhibitors, simplifies the flotation process, reduces the flotation reagent, reduces the dosage of the reagent, has good separation effect and little environmental pollution, and is convenient for industrial application.
Compared with the prior inhibitor for flotation separation of molybdenum and bismuth, the technical scheme of the invention has the following beneficial effects:
the chlorine complex oxidation method for separating molybdenum and bismuth ores disclosed by the invention can be used for performing flotation separation operation of molybdenum and bismuth ores in a very wide pH flotation system and an ore pulp system with the pH of 0-14, can replace the operation of a traditional high-alkali system, and improves the separation efficiency.
The chloroxodization method for separating the molybdenum-bismuth ore can be widely applied to flotation process flows such as preferential flotation, mixed flotation, and the like, has the advantages of strong selectivity, small medicament dosage, simple medicament system, no influence on subsequent selection operation, and can greatly reduce the production cost and improve the utilization rate of mineral resources. Meanwhile, the inhibitor developed by the invention can simplify the process flow.
The chloride-complexing oxidation method for separating the molybdenum-bismuth ore disclosed by the invention is a stable, efficient, safe and low-toxicity method for inhibiting the bismuth ore, is environment-friendly, convenient to treat, stable in flotation process and easy to control, and has very important significance for improving comprehensive recycling of metal resources and economic benefits of mines.
Drawings
Figure 1 is a flotation scheme for the examples and comparative examples.
FIG. 2 is an SEM image of a bismuth mineral in tailings obtained in comparative example 1.
FIG. 3 is an SEM image of a bismuth mineral in tailings obtained in example 1.
FIG. 4 is a schematic diagram of the inhibition mechanism of the chloro-complex oxidation method for separating molybdenum-bismuth ore disclosed by the invention.
Detailed Description
The following examples are intended to further illustrate the present disclosure, but not to limit the scope of the claims.
Example 1
1. Mineral raw material
The molybdenum grade in the molybdenum-bismuth mixed rough concentrate in Hunan province is 4-5%, the bismuth grade is 9-10%, the molybdenum mainly is molybdenite, and the bismuth mainly is bismuthine. Grinding ore to-0.074 mm accounting for 80%;
2. the operation steps and technical conditions are as follows:
(1) roughing operation: weighing a certain amount of molybdenum-bismuth bulk concentrate, adding water to adjust the concentration of the ore pulp to be 25-30%, pouring the ore pulp into a proper flotation tank, sequentially adding 500g/t of oxygen with the concentration of 21%, 3000 g/of calcium hypochlorite, 1000g/t of collecting agent kerosene and 25g/t of foaming agent terpineol oil into the flotation tank, stirring each agent for 3-5 minutes, and then carrying out molybdenum-bismuth separation and roughing operation to obtain molybdenum rough concentrate and tailings; before roughing, adding calcium hypochlorite, stirring for 5min, adding collecting agent kerosene, continuously stirring for 3min, adding foaming agent terpineol oil, stirring for 3min, and roughing;
(2) molybdenum concentration I: adding 300g/t of oxygen and 1500g/t of calcium hypochlorite into the concentrate obtained in the molybdenum-bismuth separation operation, stirring for 3-5 minutes, and performing a molybdenum concentration operation;
(3) and II, molybdenum concentration: adding 150g/t of oxygen and 1000g/t of calcium hypochlorite into the concentrate obtained in the first molybdenum concentration operation, stirring for 2-3 minutes, and performing the second molybdenum concentration operation;
(4) and (3) molybdenum concentration: adding 80g/t of oxygen and 500g/t of calcium hypochlorite into the concentrate obtained in the first molybdenum concentration operation, stirring for 2-3 minutes, and performing the third molybdenum concentration operation;
(5) and (3) selecting four to five of molybdenum: stirring the concentrate obtained in the three molybdenum concentration operations for 2-3 minutes, and then carrying out blank concentration operation, wherein the concentration times are 2 times, and the final concentrate is molybdenum concentrate;
(6) molybdenum scavenging: adding 20g/t of kerosene into the tailings of the molybdenum-bismuth separation operation at the same time, stirring for 2-3 minutes, and performing molybdenum scavenging operation;
(7) and the middlings in each flotation operation are returned to the last flotation operation in sequence.
The experimental results are shown in table 1, and the SEM image of the tailings is shown in fig. 3.
Example 2
The other conditions were the same as in example 1 except that: in step (1), 10000g/t of the inhibitor of the present invention was added at the maximum, and the results are shown in Table 1.
Example 3
The other conditions were the same as in example 1 except that: in step (1), the minimum amount of the inhibitor of the present invention, i.e., 0g/t oxygen, 300g/t calcium hypochlorite was added, and the results are shown in Table 1.
Example 4
The other conditions were the same as in example 1 except that: in the steps (1), (2), (3) and (4), the chloride used was hydrochloric acid, and the results are shown in table 1.
Example 5
The other conditions were the same as in example 1, except that: in the steps (1), (2), (3) and (4), the chloride used was potassium chloride, and the results are shown in table 1.
Example 6
The other conditions were the same as in example 1 except that: in the steps (1), (2), (3) and (4), the oxidizing agent used was 25% ozone, and the results are shown in table 1.
Example 7
The other conditions were the same as in example 1 except that: the results obtained in steps (1), (2), (3) and (4) without adding oxygen are shown in table 1.
Example 8
The other conditions were the same as in example 1, except that: the raw ore is a molybdenum-bismuth mixed rough concentrate in Yunnan, the grade of molybdenum is 2-3%, the grade of bismuth is 4-5%, molybdenum mainly is calcium molybdate ore, and bismuth mainly is copper bismuth ore. 75 percent of grinding fineness of-0.074 mm;
example 9
The other conditions were the same as in example 1 except that: the raw ore is a molybdenum-bismuth mixed rough concentrate of Anhui, the grade of molybdenum is 7-8%, the grade of bismuth is 5-6%, molybdenum mainly is colored molybdenum lead ore, and bismuth mainly is square lead bismuth ore. The grinding fineness is 75 percent of-0.074 mm;
comparative example 1
The other conditions were the same as in example 1 except that: no chlorine-containing compound was added in steps (1), (2), (3) and (4), and the results are shown in Table 1, and the SEM image of the tailings is shown in FIG. 2.
Comparative example 2
The other conditions were the same as in example 1 except that: in the flotation process, the amount of chloride added in steps (1), (2), (3) and (4) was 20000g/t, and the results are shown in table 1.
Comparative example 3
The other conditions were the same as in example 1 except that: in the flotation process, the amount of chloride added in steps (1), (2), (3) and (4) was 100g/t, and the results are shown in table 1.
Comparative example 4
The other conditions were the same as in example 1 except that: the results of the flotation process, in which the combined depressants were replaced with equal amounts of sodium sulfide, are shown in table 1.
TABLE 1 flotation test results
The experimental results of the examples 1 to 7 show that the inhibitor has a good inhibiting effect on bismuth ore, and is suitable for flotation separation of molybdenum-containing minerals and bismuth-containing minerals. Meanwhile, according to the experimental results of comparative examples 1 to 4, the inhibitor of the present invention cannot inhibit the bismuth mineral within the dosage range not within the protection range of the present invention. As can be seen from comparative example 4, the inhibitor of the present invention can achieve a better inhibiting effect than the inhibitor for separation of molybdenum and bismuth in the prior art beneficiation.
It should be noted that although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The application of the inhibitor for separating the molybdenum-bismuth ore is characterized in that: separating bismuth and molybdenum in the flotation process of the molybdenum-bismuth ore by a chlorine complex oxidation method; the implementation comprises the following steps:
s1, adjusting the concentration of the molybdenum-bismuth ore pulp;
s2, adding a certain amount of oxidant into the ore pulp, and stirring; the addition amount of the oxidant is 200 to 500g/t;
s3, adding a certain amount of chlorine-containing compound into the ore pulp, and stirring; the adding amount of the chlorine-containing compound is 300 to 10000g/t;
s4, adding a molybdenum collecting agent and a foaming agent into the ore pulp, respectively stirring for 3min, and then performing flotation separation;
s1, adjusting the concentration of the molybdenum-bismuth ore pulp to be 1% -50%;
s2, adding a certain amount of oxidant into the ore pulp, and stirring for at least 1min;
s3, adding a certain amount of chlorine-containing compound into the ore pulp, and stirring for at least 1min.
2. The use of the inhibitor for sorting the molybdenum bismuth ore according to claim 1; the method is characterized in that: the bismuth-containing mineral in the bismuth-molybdenum ore is at least one selected from bismuth nadite, bismuth ambrosite, rhombohedral bismuth ore, copper bismuth ore and galena bismuth ore.
3. The use of the inhibitor for sorting the molybdenum bismuth ore according to claim 1; the method is characterized in that: the molybdenum mineral in the molybdenum-bismuth ore is at least one of molybdenite, calcium molybdate ore, color molybdenum-lead ore, molybdenum colloid ore and blue molybdenum ore.
4. The use of the inhibitor for sorting the molybdenum bismuth ore according to claim 1; the method is characterized in that: the oxidant in S2 is oxygen or/and gas with ozone content more than 1%.
5. The use of the inhibitor for sorting the molybdenum bismuth ore according to claim 1; the method is characterized in that: the chlorine-containing compound in S3 comprises at least one of chlorine, sodium chloride, sodium hypochlorite, sodium chlorite, sodium chlorate, sodium perchlorate, potassium chloride, potassium hypochlorite, potassium chlorite, potassium chlorate, potassium perchlorate, calcium hypochlorite, hypochlorous acid, hydrochloric acid, chloroform, calcium chloride, potassium chloride, ferric chloride, magnesium chloride, aluminum chloride and copper chloride.
6. The use of the inhibitor for sorting the molybdenum bismuth ore according to claim 1; the method is characterized in that: in S4, the molybdenum collector is at least one of kerosene and diesel oil, and the foaming agent is at least one of terpineol oil and methyl isobutyl carbinol; the adding amount of the molybdenum collecting agent is 100 to 10000g/t and the adding amount of the foaming agent is 5 to 500g/t in terms of ore feeding per ton.
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| WO2001046208A2 (en) * | 1999-12-21 | 2001-06-28 | Monsanto Technology Llc | Use of a supplemental promoter in conjunction with a carbon-supported, noble-metal-containing catalyst in liquid phase oxidation reactions |
| CN1381612A (en) * | 2002-03-11 | 2002-11-27 | 北京矿冶研究总院 | Method for producing antimony by electrolyzing antimony-containing sulfide mineral pulp |
| CN111229473A (en) * | 2020-01-15 | 2020-06-05 | 辽宁科技大学 | Ore dressing method for guiding and recovering silver in bismuth-sulfur separation process |
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| WO2022217709A1 (en) | 2022-10-20 |
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