CN111359773A - Preparation method of high-quality molybdenum concentrate - Google Patents
Preparation method of high-quality molybdenum concentrate Download PDFInfo
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- CN111359773A CN111359773A CN202010180108.9A CN202010180108A CN111359773A CN 111359773 A CN111359773 A CN 111359773A CN 202010180108 A CN202010180108 A CN 202010180108A CN 111359773 A CN111359773 A CN 111359773A
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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
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/10—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with one or a few disintegrating members arranged in the container
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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
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
- C22B3/06—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions, e.g. with acids generated in situ; in inorganic salt solutions other than ammonium salt solutions
- C22B3/10—Hydrochloric acid, other halogenated acids or salts thereof
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B34/00—Obtaining refractory metals
- C22B34/30—Obtaining chromium, molybdenum or tungsten
- C22B34/34—Obtaining molybdenum
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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 discloses a preparation method of high-quality molybdenum concentrate, which comprises the steps of carrying out flotation on molybdenum ore after ore grinding by adopting a method combining neutral collector flotation and chemical leaching to obtain bulk concentrate containing molybdenum, separating and floating molybdenum rough concentrate and other sulfide ores after the bulk concentrate is reground, carrying out chemical leaching after the molybdenum rough concentrate is refined by grinding for three times, further improving the grade, and obtaining the high-quality molybdenum concentrate, wherein the Mo grade is more than 57%, the content of impurities in the molybdenum concentrate is reduced to the maximum extent, the quality of the molybdenum concentrate is effectively ensured, the added value of products is improved, the maximization of the yield of the molybdenum concentrate is ensured, the high-quality molybdenum concentrate has strong universal applicability, the leaching agent is a conventional chemical reagent, and the environmental pollution is reduced.
Description
Technical Field
The invention relates to the technical field of molybdenum concentrate, in particular to a preparation method of high-quality molybdenum concentrate.
Background
The high-quality molybdenum concentrate generally requires that the Mo grade is more than 57%, and particularly, the ammonium molybdate washing process has extremely high requirement on the Mo grade, so that the high-quality molybdenum concentrate is an important raw material in the chemical industry. At present, the content of main element molybdenum in molybdenum concentrate produced by most molybdenum mines in China is low, impurities are high, the quality of the molybdenum concentrate has a large difference with that of the developed countries of foreign industries, except that the grade of a few molybdenum concentrates is high, the content of Mo in most molybdenum concentrates is 45% -47%, and the content of the main element is 3-7% lower than that of molybdenum concentrates produced in America and Chilean.
The existing process has high requirements on the properties of ores, generally single molybdenum sulfide ore, and the Pb grade is below 0.1%, but the molybdenum in China is a mineral resource of associated resources, and the molybdenum ore is often associated with elements such as copper, lead and the like, especially galena. At present, the main recovery method of molybdenum concentrate is a flotation method, because molybdenite and galena have good floating characteristics, the difficulty of reducing lead in the molybdenum concentrate is very high, lead is inevitable in the molybdenum concentrate, and sulfide ores mainly containing lead seriously influence the quality of the molybdenum concentrate. And the existing process has higher requirements on mineral processing equipment, needs more advanced equipment such as a flotation column, a vertical spiral stirring mill and the like, and increases the process modification cost for producing high-quality molybdenum concentrate.
Disclosure of Invention
The invention aims to overcome the technical defects and provide the method for preparing the high-quality molybdenum concentrate, which has the advantages of simple process, strong operability, low cost, environmental protection and capability of being used for preparing the high-quality molybdenum concentrate in large-scale industrial production and realizing high-quality and high-quality use of molybdenum ore.
In order to solve the technical problems, the invention adopts the following technical scheme.
A method for preparing high-quality molybdenum concentrate is characterized by comprising the following steps:
s1: crushing molybdenum ore with the Mo grade of more than 0.13%, grinding until the Mo grade is-0.074 mm and accounts for 60% -70%, and adding 1500-2500 g/t lime in the grinding process to obtain a substance A;
s2: adding 1500-2000 g/t of regulator water glass, 60-80 g/t of kerosene and 40-60 g/t of pine oil into the substance A obtained in the step S1 in sequence to obtain ore pulp, and performing flotation on the ore pulp for 3-5 min to obtain rough concentrate and tailings 1;
s3: carrying out three-time concentration on the rough concentrate obtained in the step S2, adding 100-200 g/t of water glass in the concentration process to obtain a bulk concentrate 1, and carrying out two-time scavenging on the tailings 1 obtained in the step S2 to obtain final tailings 2;
s4: putting the bulk concentrate 1 obtained in the step S3 into a ball mill, grinding for the second time until the grain size is-0.038 mm and accounts for 85% -90%, and obtaining bulk concentrate 2;
s5: adding 100-200 g/t of water glass, 15-25 g/t of sodium thioglycolate and 15-20 g/t of phosphonocks into the bulk concentrate 2 obtained in the step S4 in sequence, and performing molybdenum concentrate separation flotation to obtain a molybdenum concentrate 1 and other sulfide ores 1;
s6: carrying out concentration for three times on the molybdenum concentrate 1 obtained in the step S5, and sequentially adding 50-100 g/t of water glass, 15-25 g/t of sodium thioglycolate and 15-20 g/t of phosphonocks in the concentration process to obtain molybdenum concentrate 2; carrying out scavenging on molybdenum in other sulfide ores 1 in S5 for three times, and sequentially adding 5-10 g/t of kerosene, 10-15 g/t of sodium thioglycolate and 10-20 g/t of phosphonotx in the scavenging process to obtain other sulfide ores 2;
s7: carrying out third grinding on the molybdenum concentrate 2 obtained in the step S6 until the grinding fineness is-0.038 mm, wherein the grinding fineness is 90-95%, so as to obtain molybdenum concentrate 3;
s8: carrying out concentration on the molybdenum concentrate 3 obtained in the step S7 for three times, sequentially adding 50-100 g/t of water glass, 15-20 g/t of sodium thioglycolate and 15-20 g/t of phosphonocks in the concentration process, and obtaining molybdenum concentrate 4 and general molybdenum concentrate after concentration;
s9: after the molybdenum concentrate 4 is subjected to ultrasonic cleaning, 1-2% of HCl and 5-10% of FeCl are added3Leaching at the temperature of 80-90 ℃ for 2h as a leaching agent, and ultrasonically cleaning after leaching to obtain high-quality molybdenum concentrate.
Further, the concentration of the slurry in the S2 is 25-35 wt%.
Further, the three beneficiating operations in S3 include first beneficiating, second beneficiating, and third beneficiating, the first beneficiated middlings are returned to S2, the second beneficiated middlings are returned to the first beneficiating, and the third beneficiated middlings are returned to the second beneficiating.
Further, the two times of scavenging in the S3 include first scavenging and second scavenging, where the first scavenging middlings are returned to the S2, and the second scavenging middlings are returned to the first scavenging.
Further, in the S6, carrying out three times of concentration on the molybdenum concentrate 1, merging middlings generated by the three times of concentration, and returning the middlings to the S4 ball mill for regrinding; middlings generated by three times of scavenging on other sulfide ores in the S6 are combined and then returned to the S4 grinding machine for regrinding.
Further, the Phosphonocks in S5 is prepared by NaOH and P2S5The preparation of the reaction specifically comprises the following steps: dissolving NaOH in water to prepare a 10% solution, and cooling to room temperature; will P2S5Adding NaOH solution until the NaOH solution is completely dissolved, wherein the ratio of NaOH to P is2S5The mass fraction ratio is 1: 1.5.
Compared with the prior art, the invention has the beneficial effects that:
by adopting a method combining neutral collector flotation and chemical leaching, and adopting different treatment methods for middlings generated in different stages in the flotation process, the content of impurities in the molybdenum concentrate is reduced to the maximum extent, the quality of the molybdenum concentrate is effectively ensured, the added value of products is improved, the maximization of the yield of the molybdenum concentrate is ensured, the method has strong universal applicability, and the leaching agent is a conventional chemical reagent, so that the environmental pollution is reduced.
Drawings
Fig. 1 is a flow diagram of a method of producing high quality molybdenum concentrate according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
A method for preparing high-quality molybdenum concentrate is characterized by comprising the following steps:
s1: crushing molybdenum ore with the Mo grade of more than 0.13%, grinding until the Mo grade is-0.074 mm and accounts for 60% -70%, and adding 1500-2500 g/t lime in the grinding process to obtain a substance A;
s2: adding 1500-2000 g/t of regulator water glass, 60-80 g/t of kerosene and 40-60 g/t of pine oil into the substance A obtained in the step S1 in sequence to obtain ore pulp, and performing flotation on the ore pulp for 3-5 min to obtain rough concentrate and tailings 1;
s3: and (4) carrying out tertiary concentration on the rough concentrate obtained in the step (S2), and adding 100-200 g/t of water glass in the concentration process to obtain the bulk concentrate 1. Carrying out scavenging twice on the tailings 1 obtained in the step S2 to obtain final tailings 2;
s4: putting the bulk concentrate 1 obtained in the step S3 into a ball mill, grinding for the second time until the grain size is-0.038 mm and accounts for 85% -90%, and obtaining bulk concentrate 2;
s5: adding 100-200 g/t of water glass, 15-25 g/t of sodium thioglycolate and 15-20 g/t of phosphonocks into the bulk concentrate 2 obtained in the step S4 in sequence, and performing molybdenum concentrate separation flotation to obtain a molybdenum concentrate 1 and other sulfide ores 1;
s6: carrying out concentration for three times on the molybdenum concentrate 1 obtained in the step S5, and sequentially adding 50-100 g/t of water glass, 15-25 g/t of sodium thioglycolate and 15-20 g/t of phosphonocks in the concentration process to obtain molybdenum concentrate 2; carrying out scavenging on molybdenum in other sulfide ores 1 in S5 for three times, and sequentially adding 5-10 g/t of kerosene, 10-15 g/t of sodium thioglycolate and 10-20 g/t of phosphonotx in the scavenging process to obtain other sulfide ores 2;
s7: carrying out third grinding on the molybdenum concentrate 2 obtained in the step S6 until the grinding fineness is-0.038 mm, wherein the grinding fineness is 90-95%, so as to obtain molybdenum concentrate 3;
s8: carrying out concentration on the molybdenum concentrate 3 obtained in the step S7 for three times, sequentially adding 50-100 g/t of water glass, 15-20 g/t of sodium thioglycolate and 15-20 g/t of phosphonocks in the concentration process, and obtaining molybdenum concentrate 4 and general molybdenum concentrate after concentration;
s9: after the molybdenum concentrate 4 is subjected to ultrasonic cleaning, 1-2% of HCl and 5-10% of FeCl are added3Leaching with the temperature of 80-90 ℃ as a leaching agent,leaching for 2h, and ultrasonically cleaning after leaching to obtain the high-quality molybdenum concentrate.
Further, the concentration of the slurry in the S2 is 25-35 wt%.
Further, the third concentration in the S3 includes first concentration, second concentration and third concentration, the first concentration middlings are returned to the S2, the second concentration middlings are returned to the first concentration, and the third concentration middlings are returned to the second concentration.
Further, the two times of scavenging in the S3 include first scavenging and second scavenging, the first scavenging middlings are returned to the S2, and the second scavenging middlings are returned to the first scavenging.
Further, in the S6, carrying out three times of concentration on the molybdenum concentrate 1, merging middlings generated by the three times of concentration, and returning the middlings to the S4 ball mill for regrinding; middlings generated by three times of scavenging on other sulfide ores in the S6 are combined and then returned to the S4 grinding machine for regrinding.
Further, the Phosphonocks in S5 is prepared by NaOH and P2S5The preparation of the reaction specifically comprises the following steps: dissolving NaOH in water to prepare a 10% solution, and cooling to room temperature; will P2S5Adding NaOH solution until the NaOH solution is completely dissolved, wherein the ratio of NaOH to P is2S5The mass fraction ratio is 1: 1.5.
In addition, when the molybdenum ore in the S1 has low impurity content, chemical leaching is not adopted, and more than 57% of molybdenum concentrate can be produced; the molybdenum concentrate grade can be improved by increasing the frequency of concentration operation and the grinding fineness.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. The preparation method of the high-quality molybdenum concentrate is characterized by comprising the following steps of:
s1: crushing molybdenum ore with the Mo grade of more than 0.13%, grinding until the Mo grade is-0.074 mm and accounts for 60% -70%, and adding 1500-2500 g/t lime in the grinding process to obtain a substance A;
s2: adding 1500-2000 g/t of regulator water glass, 60-80 g/t of kerosene and 40-60 g/t of pine oil into the substance A obtained in the step S1 in sequence to obtain ore pulp, and performing flotation on the ore pulp for 3-5 min to obtain rough concentrate and tailings 1;
s3: carrying out three-time concentration on the rough concentrate obtained in the step S2, adding 100-200 g/t of water glass in the concentration process to obtain a bulk concentrate 1, and carrying out two-time scavenging on the tailings 1 obtained in the step S2 to obtain final tailings 2;
s4: putting the bulk concentrate 1 obtained in the step S3 into a ball mill, grinding for the second time until the grain size is-0.038 mm and accounts for 85% -90%, and obtaining bulk concentrate 2;
s5: adding 100-200 g/t of water glass, 15-25 g/t of sodium thioglycolate and 15-20 g/t of phosphonocks into the bulk concentrate 2 obtained in the step S4 in sequence, and performing molybdenum concentrate separation flotation to obtain a molybdenum concentrate 1 and other sulfide ores 1;
s6: carrying out concentration for three times on the molybdenum concentrate 1 obtained in the step S5, and sequentially adding 50-100 g/t of water glass, 15-25 g/t of sodium thioglycolate and 15-20 g/t of phosphonocks in the concentration process to obtain molybdenum concentrate 2; carrying out scavenging on molybdenum in other sulfide ores 1 in S5 for three times, and sequentially adding 5-10 g/t of kerosene, 10-15 g/t of sodium thioglycolate and 10-20 g/t of phosphonotx in the scavenging process to obtain other sulfide ores 2;
s7: carrying out third grinding on the molybdenum concentrate 2 obtained in the step S6 until the grinding fineness is-0.038 mm, wherein the grinding fineness is 90-95%, so as to obtain molybdenum concentrate 3;
s8: carrying out concentration on the molybdenum concentrate 3 obtained in the step S7 for three times, sequentially adding 50-100 g/t of water glass, 15-20 g/t of sodium thioglycolate and 15-20 g/t of phosphonocks in the concentration process, and obtaining molybdenum concentrate 4 and general molybdenum concentrate after concentration;
s9: after the molybdenum concentrate 4 is subjected to ultrasonic cleaning, 1-2% of HCl and 5-10% of FeCl are added3Leaching at the temperature of 80-90 ℃ for 2h as a leaching agent, and ultrasonically cleaning after leaching to obtain high-quality molybdenum concentrate.
2. The method for preparing high-quality molybdenum concentrate according to claim 1, wherein the concentration of the slurry in S2 is 25-35 wt%.
3. The method of claim 1, wherein the third concentration in the step S3 comprises first concentration, second concentration and third concentration, the first concentration middlings are returned to the step S2, the second concentration middlings are returned to the first concentration, and the third concentration middlings are returned to the second concentration.
4. The method for preparing high-quality molybdenum concentrate according to claim 1, wherein the two times of scavenging in the S3 comprise first scavenging and second scavenging, the first scavenging middlings are returned to the S2, and the second scavenging middlings are returned to the first scavenging.
5. The method for preparing the high-quality molybdenum concentrate according to claim 1, characterized in that the molybdenum concentrate 1 is concentrated for three times in S6, middlings generated by the three times of concentration are combined and then returned to the S4 ball mill for regrinding; middlings generated by three times of scavenging on other sulfide ores in the S6 are combined and then returned to the S4 grinding machine for regrinding.
6. The method for preparing high-quality molybdenum concentrate according to claim 1, wherein the second step is that the phosphoric acid in S5 is treated by NaOH and P2S5Of reactionThe preparation method specifically comprises the following steps: dissolving NaOH in water to prepare a 10% solution, and cooling to room temperature; will P2S5Adding NaOH solution until the NaOH solution is completely dissolved, wherein the ratio of NaOH to P is2S5The mass fraction ratio is 1: 1.5.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4605518A (en) * | 1981-06-04 | 1986-08-12 | Crozier Ronald D G | Industrial process for the manufacture of alkyl xanthogen formates |
| CN101451187A (en) * | 2007-12-04 | 2009-06-10 | 灵宝市金源矿业有限责任公司 | Comprehensive recovery method of gold ore resource containing molybdenum multi-metal |
| CN101914678A (en) * | 2010-08-20 | 2010-12-15 | 西北有色金属研究院 | Method for producing industry molybdenum oxide from molybdenum concentrate |
| CN105413880A (en) * | 2015-12-22 | 2016-03-23 | 中国地质科学院矿产综合利用研究所 | Beneficiation method for producing low-phosphorus molybdenum concentrate by utilizing ultrasonic waves |
| WO2018067657A1 (en) * | 2016-10-04 | 2018-04-12 | Cidra Corporate Services, Inc | Separation of copper and molybdenum sulfides from pyrite using a sea water / desalinated water hybrid process |
| CN108580027A (en) * | 2018-06-20 | 2018-09-28 | 金堆城钼业股份有限公司 | A kind of technique improving molybdenum floatation indicators |
-
2020
- 2020-03-16 CN CN202010180108.9A patent/CN111359773A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4605518A (en) * | 1981-06-04 | 1986-08-12 | Crozier Ronald D G | Industrial process for the manufacture of alkyl xanthogen formates |
| CN101451187A (en) * | 2007-12-04 | 2009-06-10 | 灵宝市金源矿业有限责任公司 | Comprehensive recovery method of gold ore resource containing molybdenum multi-metal |
| CN101914678A (en) * | 2010-08-20 | 2010-12-15 | 西北有色金属研究院 | Method for producing industry molybdenum oxide from molybdenum concentrate |
| CN105413880A (en) * | 2015-12-22 | 2016-03-23 | 中国地质科学院矿产综合利用研究所 | Beneficiation method for producing low-phosphorus molybdenum concentrate by utilizing ultrasonic waves |
| WO2018067657A1 (en) * | 2016-10-04 | 2018-04-12 | Cidra Corporate Services, Inc | Separation of copper and molybdenum sulfides from pyrite using a sea water / desalinated water hybrid process |
| CN108580027A (en) * | 2018-06-20 | 2018-09-28 | 金堆城钼业股份有限公司 | A kind of technique improving molybdenum floatation indicators |
Non-Patent Citations (2)
| Title |
|---|
| 王敬功: "《地质科技创新与实践 河北省保定地质工程勘查院科技论文集》", 30 September 2016, 地质出版社 * |
| 陈代雄: "《铜铅锌矿选矿新技术》", 31 October 2019, 冶金工业出版社 * |
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Application publication date: 20200703 |