CN109465106B - Sorting method for tungsten-molybdenum ore - Google Patents
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Abstract
The invention discloses a sorting method for tungsten-molybdenum ores, which is characterized in that molybdenum is recovered through flotation, molybdenum tailings are separated into sulfur, and sulfur tailings are separated into scheelite tailings through flotation. The invention has the advantages of high sorting efficiency, good effect, clear arrangement and easy operation. The method is suitable for minerals containing tungsten, molybdenum and sulfur, three elements are recovered, molybdenum concentrate, sulfur concentrate and tungsten concentrate can be well separated by the method, and good grade and recovery rate are obtained.
Description
Technical Field
The invention belongs to the technical field of mineral separation, and particularly relates to a method for separating tungsten and molybdenum ores.
Background
Tungsten has the characteristics of high melting point, high specific gravity, high hardness and the like, is one of irreplaceable basic materials of national economy and modern national defense, is an important strategic material, and is widely applied to important fields of aerospace, mechanical manufacturing, petroleum, new materials, national defense industry and the like. Therefore, great attention is paid to the development and utilization of tungsten resources in various countries.
Although the discovery of molybdenum has been over 200 years, molybdenum is listed as mineral resources needing to be reserved strategically in strong countries in the world due to the special use of molybdenum in military weapons. Strategic mineral reserve or mineral strategic reserve. China is a country with rich molybdenum ore resources, and the total reserve reaches 860 million tons (measured by molybdenum), wherein the industrial reserve is about 350 million tons and is the second place in the world. The molybdenum ore resources in China have the characteristics of large reserves, wide distribution, more large ore deposits, shallow ore body burial and the like, and have important influence on the global molybdenum market.
As is known, the recovery of complex multi-element minerals generally requires a complex process flotation, the final effect is often not ideal, the mutual inclusion is serious, or the final grade is not high, or the recovery rate is low.
Disclosure of Invention
The invention aims to provide a method for sorting tungsten-molybdenum ores, which solves the problems of complex process, poor effect and serious mutual inclusion in the prior art, and low grade of the tungsten-molybdenum ores.
The technical scheme adopted by the invention is that the method for sorting tungsten-molybdenum ores is specifically carried out according to the following steps as shown in figure 1:
grinding ore until the granularity of less than 0.075mm accounts for 65%, and adding lime and water glass in the ore grinding process;
the ore is ground to a grain size of less than 0.075mm accounting for 65 percent, the grinding cost is increased along with the increase of the grinding fineness, but the grinding fineness and the grain size are less than or more than 65 percent, the useful minerals cannot be dissociated by monomers, and the grade and the recovery rate of the useful minerals cannot be improved;
further, 2000g of lime and 1500g of water glass are added into each ton of ore in the first step; lime adjusts the pH value of the ore pulp and inhibits gangue mineral pyrite, if the lime dosage is more than 2000g per ton, the inhibition effect is stronger and stronger, part of target mineral molybdenum can be inhibited, the smaller the lime dosage is, the inhibition effect on pyrite is insufficient, the more the ore comes, and the recovery of sulfur is influenced; the water glass can inhibit silicate gangue minerals, if the using amount of the water glass is more than 1500g per ton, the inhibiting force is too large, the silicate gangue minerals can be inhibited, the molybdenum can be inhibited from being recycled, the using amount of the collecting agent can be increased, if the using amount of the water glass is less than 1500g per ton, the inhibiting force is insufficient, the silicate gangue minerals can be partially absorbed, the grade of molybdenum in the ore concentrate can be reduced, and the ore concentrate amount is increased.
And step two, after ore grinding is finished, pouring the mixture obtained in the step one into a flotation machine, adding a collecting agent, uniformly stirring, adding a foaming agent, uniformly stirring, scraping bubbles until no attachment exists, and obtaining molybdenum rough concentrate and molybdenum tailings, wherein the scraped foam product is the molybdenum rough concentrate, and the molybdenum tailings are in the flotation machine.
Further, the collector used in the second step is CG1, CG 1150 g is added into each ton of mixture, the collector CG1 is a mixed product of kerosene, diesel oil and transformer oil according to the mass ratio of 1:1:1, the using amount of the collector is small, the grade of the collected concentrate is high, the recovery rate is too low, the using amount of the collector is high, the recovery rate is too low, CG1 is a collector for collecting sulfide minerals, molybdenum belongs to sulfide minerals, therefore, the CG1 is used as the collector, the molybdenum floats upwards, and CG1 is also the best sulfide mineral collector determined by screening test data of the same type of sulfide mineral collectors;
and the foaming agent used in the second step is No. 2 oil, 50g of No. 2 oil is added into each ton of the mixture, the dosage of the foaming agent is small, no foaming occurs during sorting, molybdenum of the target mineral cannot be attached to bubbles and cannot be selected, the obtained concentrate cannot be obtained, or the concentrate amount is too small, the recovery rate is low, the dosage of the foaming agent is large, the bubbles are too many, the ore pulp is sticky, the molybdenum of the target mineral is attached to the bubbles, and other gangue minerals such as quartz and feldspar are also attached to the bubbles and enriched in the concentrate, so that the grade of the target mineral is reduced.
Step three, feeding the molybdenum rough concentrate obtained in the step two into a grinding machine for secondary grinding until the granularity is less than 0.045mm and accounts for 90%, adding 500g of water glass and 500g of sodium sulfide into each ton of molybdenum rough concentrate in the grinding machine, uniformly stirring, and carrying out first concentration; scraping and foaming the mixture after the first concentration until no attachments exist, then adding water glass and sodium sulfide into each ton of the mixture, uniformly stirring the mixture by 400g, and performing second concentration; scraping and foaming the mixture after the second selection until no attachments exist, then adding 300g of water glass and 300g of sodium sulfide into each ton of the mixture, uniformly stirring, and performing the third selection; scraping and foaming the mixture after the third selection until no attachments exist, then adding water glass and sodium sulfide into each ton of the mixture, uniformly stirring the mixture by 400g respectively, and performing the fourth selection; scraping and soaking the mixture after the fourth concentration until no attachments exist, then stirring, and scraping and soaking again after uniformly stirring to obtain a fifth concentration, wherein a foam product obtained by the fifth concentration is molybdenum concentrate;
and D, adding an activating agent into the molybdenum tailings obtained in the step II, uniformly stirring, adding a collecting agent, uniformly stirring, adding a foaming agent, uniformly stirring, scraping until no attachment exists, wherein the scraped foam product is sulfur rough concentrate, and the rest is sulfur tailings.
In the third step, the ore is ground to the granularity of less than 0.045mm accounting for 90%, the ore concentrate grade and recovery rate accounting for 90% of less than 0.045mm are obtained through comparison of test results, the grinding fineness can not be achieved, the target mineral molybdenum is not completely dissociated by monomers, the ore concentrate grade is low, the recovery rate is also low, and the ore concentrate grade and recovery rate of the molybdenum can be improved only after the grinding fineness is thinned to meet the requirement of complete dissociation of the molybdenum;
furthermore, in the third step, water glass and sodium sulfide are inhibitors, the water glass inhibits quartz and feldspar sodium silicate gangue minerals, the sodium sulfide inhibits pyrite iron sulfide minerals, if no inhibitor is added, the selected sodium silicate gangue minerals and iron sulfide minerals are attached to foams and enter the concentrate along with molybdenum, the grade of the molybdenum concentrate is further reduced, the weight of the concentrate is increased, and the grade of the concentrate cannot meet the requirement; the gangue minerals can not be completely inhibited when the dosage of the inhibitor is small, and the molybdenum is also inhibited when the dosage of the inhibitor is large;
the activating agent in the third step is copper sulfate, 400g of copper sulfate is added into each ton of molybdenum tailings, and if the activating agent dosage is small, the activating agent cannot perform an activating effect, the effect is poor, and if the activating agent dosage is large, the resource waste is caused;
the collecting agent in the third step is any one of etihuang, iprodione, buthixate, penthixate, isobutylxanthate, sec-octyl xanthate and isopentyl xanthate, 100g of collecting agent is added into each ton of molybdenum tailings after the activating agent is added, the adding amount is small, the effect of the collecting agent is poor, the adding amount is large, and resources of the collecting agent are caused; sulfur can float up by taking any one of ethidium, iprodione, butylated xanthate, pentylene xanthate, isobutylene xanthate, sec-octylene xanthate and isoamylene xanthate as a collecting agent;
and in the third step, the foaming agent is No. 2 oil, 50g of No. 2 oil is added into each ton of molybdenum tailings added with the activating agent and the collecting agent, the consumption of the foaming agent is small, no foaming occurs during sorting, the pyrite serving as a target mineral cannot be attached to bubbles, the flotation cannot be carried out, no concentrate can be obtained, or the amount of the concentrate is too small, the recovery rate is low, the consumption of the foaming agent is large, the bubbles are too much, ore pulp is sticky, not only is molybdenum serving as the target mineral attached to the bubbles, but also other gangue minerals such as quartz and feldspar are attached to the bubbles and enriched in the concentrate.
Step four, the sulfur rough concentrate in the step three is selected, the sulfur rough concentrate is uniformly stirred and inflated, the collecting agent added in the step two continues to act, so that a plurality of foams are generated after the inflation, the target mineral sulfide ore is attached to the foams, the foams are scraped until the foams become white and the target mineral does not exist, the scraped foam products are sulfur concentrate, and the frequency of the selection is selected according to the actual requirement;
scavenging the sulfur tailings in the third step, performing tungsten roughing after scavenging, wherein the tungsten roughing needs to be performed by adding a pH regulator and a collecting agent, and scraping bubbles until no attachments exist, wherein the scraped foam product is tungsten rough concentrate, and the rest is tungsten tailings.
Further, in the fourth step, the pH regulator is sodium carbonate or lime, the sodium carbonate not only has the function of regulating pH, but also has the functions of dispersing slime and preventing mineral from being sticky, and the pH regulator is added into each ton of scavenged sulfur tailings and is 1000g per ton; the lime adjusts the pH value and can also inhibit pyrite sulfide minerals, if the lime is used in a large amount, the pH value is too large, the inhibition force is too large, so that the scheelite is inhibited, the target mineral scheelite cannot be completely selected, and if the lime is used in an amount less than 1000g per ton, the pH value cannot be reached, so that the effect of the collecting agent is influenced;
the inhibitor in the fourth step is water glass, 2000g of water glass is added into each ton of scavenged sulfur tailings added with the pH regulator, the water glass inhibits silicate minerals, after the water glass is added, most gangue mineral silicate minerals occupy the gangue minerals and follow the pyrite of the target mineral along with foams, the grade of the concentrate is reduced, the weight of the concentrate is increased, the quality of the concentrate is seriously influenced, if the amount of the water glass is small, the gangue mineral silicate minerals are incompletely inhibited, too many gangue minerals are in the concentrate, the quality of the concentrate is influenced, the grade of the concentrate is reduced, the weight of the concentrate is increased, if the amount of the water glass is large, the gangue minerals are excessive, the pyrite of the target mineral is also inhibited, the amount of the concentrate is reduced, and the recovery rate is reduced;
the collecting agent in the fourth step is CF, the CF is a saponified medicament of oxidized paraffin soap, and the saponified medicament has the advantages of low temperature resistance, strong collecting capability, good selectivity, high grade of flotation concentrate and high recovery rate, wherein CF500g is added into the scavenged sulfur tailings with pH regulator and inhibitor added into each ton, the recovery rate of partial scheelite is low when the collecting agent CF is too little, the scavenged incomplete collector CF is too much, and the grade of CF is reduced; CF is a medicament for collecting oxidized ores, scheelite belongs to the oxidized ores, the scheelite floats upwards by using CF as a collecting agent, and the CF is also the best oxidized ore collecting agent determined by screening test data through the scheelite collecting agent selected from the same class.
Step five, concentrating and heating the tungsten rough concentrate in the step four, adding an inhibitor and a collecting agent to heat and stir the ore pulp for 1 hour, uniformly stirring, inflating and scraping bubbles, attaching purposeful mineral white tungsten on the bubbles, scraping until the bubbles become white and have no bubbles, concentrating the scraped foam products to obtain tungsten concentrate, selecting concentration times according to required standards, adding the collecting agent into the rest, stirring for fine scavenging, scraping bubbles, wherein the collected foam products are tungsten concentrate, the rest are tungsten heated tailings, and scavenging is finished when no mineral is attached to the bubbles;
and (3) adding a collecting agent into the tungsten tailings in the fourth step for scavenging, scraping until no ore is attached to the foam, stopping foam scraping and inflating to prevent the white tungsten from being not selected in rough concentration, wherein the ore pulp after scavenging is the final tailings, and the scavenging times of the tungsten tailings are selected according to requirements.
Further, the inhibitor in the fifth step is water glass and CG2, the adding amount of the water glass is 40000g per ton, the adding amount of the CG2 is 100g per ton, and the CG2 is made of Na2S, NaOH, Ca salt, Mg salt, Na2S: NaOH: ca salt: the molar ratio of Mg salt is 2:1:1:1, so that pyrite and pyrrhotite in the rough concentrate can be effectively inhibited, and the grade of the tungsten concentrate is improved;
the collecting agent in the fifth step is CF, the adding amount of the tungsten rough concentrate during concentration is 50g per ton, the adding amount of the tungsten tailings during scavenging is 100g per ton, CF is a saponified reagent of oxidized paraffin soap, and the collecting agent has the advantages of low temperature resistance, strong collecting capacity, good selectivity, high grade of flotation concentrate and high recovery rate.
Furthermore, the concentration of the ore pulp in percentage by weight in the step five is kept between 55 and 65 percent, the temperature is kept between 85 and 95 ℃, and if the concentration and the temperature of the ore pulp in the step five are not in the range, the experimental effect cannot be achieved.
And (4) returning to the previous step to re-select the bad products obtained in each step.
The invention has the beneficial effects that: the invention has the advantages of high sorting efficiency, good effect, clear arrangement and easy operation. The method is suitable for minerals containing tungsten, molybdenum and sulfur, three elements are recovered, molybdenum concentrate, sulfur concentrate and tungsten concentrate can be well separated by the method, and good grade and recovery rate are obtained.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a process flow diagram of a method for grading tungsten molybdenum ore.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The process adopts a preferential flotation process, molybdenum is recovered by flotation, molybdenum tailings are separated by flotation, sulfur is separated, and white tungsten is separated from sulfur tailings by flotation. The molybdenum separation process comprises two-stage grinding, primary coarse grinding, concentrate regrinding and five-stage fine separation, wherein the fineness of the primary grinding is less than 0.075mm and accounts for 65%, and the fineness of the concentrate regrinding is less than 0.045mm and accounts for 90%; the sulfur selecting process is 'one coarse and three fine sweeps'; the tungsten selecting process is 'one coarse and two sweeps' + coarse concentrate 'one coarse and two sweeps and two concentrates'.
Examples
The method is adopted to sort the tungsten and molybdenum ores in somewhere in Sichuan, and WO in the ores3The grade of (A) was 0.155%, the grade of Mo was 0.03%, and the grade of S was 0.51%.
Putting 3kg of ore into a mill, adding 2000g/t of lime and 1500g/t of water glass, grinding to-0.074 mm accounting for 65%, pouring the ground ore pulp into an 8L flotation machine, stirring, adding CG1, stirring for 3 minutes, adding No. 2 oil, stirring for 2 minutes, carrying out flotation and foam scraping for 3 minutes to obtain molybdenum rough concentrate and molybdenum tailings, and reserving the molybdenum tailings for next sulfur selection; the molybdenum rough concentrate enters a grinding machine to carry out secondary grinding until the molybdenum ore concentrate is ground to be 90 mm, 500g/t of each of water glass and sodium sulfide is added into the grinding machine, the ground ore pulp is poured into an lL flotation machine to carry out concentration, the concentrated concentrate is poured into a 0.5L flotation machine to be added with 400g/t of each of water glass and sodium sulfide, the mixture is stirred for 3 minutes to carry out concentration II, the concentrate of the concentration II is added with 300g/t of each of water glass and sodium sulfide, the mixture is stirred for 3 minutes to carry out concentration III, the concentrate of the concentration III is added with 400g/t of each of water glass and sodium sulfide, the mixture is stirred for 3 minutes to carry out concentration IV, the concentrate of the concentration IV is poured into a 0.5L flotation machine, the mixture is stirred for 2 minutes to carry out concentration V, the five-stage concentration is carried out to obtain the final molybdenum.
Adding 400g/t of copper sulfate into the molybdenum tailings, stirring for 3 minutes, adding 100g/t of ethyl xanthate, adding 50g/t of No. 2 oil, concentrating for 3 minutes to obtain sulfur rough concentrate and sulfur tailings, adding half of collecting agent and foaming agent of rough concentration into the sulfur tailings for scavenging, and selecting tungsten from the rest tungsten tailings; and (3) carrying out primary stirring separation on the sulfur rough concentrate without adding a medicament to obtain the sulfur concentrate, wherein the sulfur grade of the sulfur concentrate is 36.85%, and the recovery rate of sulfur is 64.56%.
Adding 1000g/t of sodium carbonate into the sulfur tailings, stirring for 5 minutes, adding 2000g/t of water glass, stirring for 3 minutes, adding 500 CF (carbon fiber) g/t, stirring for 5 minutes, and performing tungsten roughing and bubble scraping for 5 minutes to obtain tungsten rough concentrate and tungsten tailings; scavenging the tungsten tailings twice, adding CF200g/t, stirring for 5 minutes, scraping for 3 minutes, and taking the ore pulp after scavenging as the final tailings; concentrating the tungsten rough concentrate, pouring the tungsten rough concentrate into a small beaker to enable the concentration of ore pulp to be 55-65%, adding water glass 40000g/t, CG2 and CF50g/t to keep the temperature at 85-95 ℃, heating and stirring for 1 hour, then roughing and scraping for 3 minutes to obtain tungsten concentrate and residual products, adding CF100g/t to the residual products, stirring for 5 minutes to carry out scavenging to obtain tungsten heated tailings, carrying out two-stage chemical-free concentration on the tungsten concentrate to obtain the tungsten concentrate, wherein the grade of the tungsten concentrate is 50.01%, and the recovery rate is 83.38%.
All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (2)
1. The method for sorting tungsten-molybdenum ores is characterized by comprising the following steps of:
grinding ore until the granularity of less than 0.075mm accounts for 65%, and adding lime and water glass in the ore grinding process;
in the first step, 2000g of lime and 1500g of water glass are added into each ton of ore;
step two, after ore grinding is finished, pouring the mixture obtained in the step one into a flotation machine, adding a collecting agent, uniformly stirring, adding a foaming agent, uniformly stirring, scraping until no attachment exists, wherein the scraped foam product is molybdenum rough concentrate, and molybdenum tailings are obtained in the flotation machine;
the collector used in the second step is CG1, CG 1150 g is added into each ton of mixture, and the collector CG1 is a compound product of kerosene, diesel oil and transformer oil mixed according to the mass ratio of 1:1: 1;
the foaming agent used in the second step is No. 2 oil, and 50g of No. 2 oil is added into each ton of the mixture;
step three, feeding the molybdenum rough concentrate obtained in the step two into a grinding machine for secondary grinding until the granularity is less than 0.045mm and accounts for 90%, adding 500g of water glass and 500g of sodium sulfide into each ton of molybdenum rough concentrate in the grinding machine, uniformly stirring, and carrying out first concentration; scraping and foaming the mixture after the first concentration until no attachments exist, then adding water glass and sodium sulfide into each ton of the mixture, uniformly stirring the mixture by 400g, and performing second concentration; scraping and foaming the mixture after the second selection until no attachments exist, then adding 300g of water glass and 300g of sodium sulfide into each ton of the mixture, uniformly stirring, and performing the third selection; scraping and foaming the mixture after the third selection until no attachments exist, then adding water glass and sodium sulfide into each ton of the mixture, uniformly stirring the mixture by 400g respectively, and performing the fourth selection; scraping and soaking the mixture after the fourth concentration until no attachments exist, then stirring, and scraping and soaking again after uniformly stirring to obtain a fifth concentration, wherein a foam product obtained by the fifth concentration is molybdenum concentrate;
adding an activating agent into the molybdenum tailings obtained in the step two, uniformly stirring, adding a collecting agent, uniformly stirring, adding a foaming agent, uniformly stirring, scraping until no attachment exists, wherein the scraped foam product is sulfur rough concentrate, and the rest is sulfur tailings;
the activating agent in the third step is copper sulfate, and 400g of copper sulfate is added into each ton of molybdenum tailings;
the collector in the third step is any one of etihuang, iprodione, buthuang, penthemeramide, isobutylxanthate, sec-octyl xanthate and isopentyl xanthate, and 100g of the collector is added into each ton of molybdenum tailings after the activator is added;
the foaming agent in the third step is No. 2 oil, and 50g of No. 2 oil is added into each ton of molybdenum tailings added with the activating agent and the collecting agent;
step four, the sulfur rough concentrate in the step three is selected, after being uniformly stirred, the sulfur rough concentrate is aerated, the target mineral sulfide ore is attached to the foam, the foam is scraped until the foam turns white and the target mineral does not exist, the scraped foam product is the sulfur concentrate, and the frequency of the selection is selected according to the actual requirement;
scavenging the sulfur tailings in the third step, performing tungsten roughing after scavenging, wherein the tungsten roughing needs to be performed by adding a pH regulator, an inhibitor and a collecting agent, and scraping bubbles until no attachments exist, wherein the scraped foam product is tungsten rough concentrate, and the rest is tungsten tailings;
the pH regulator in the fourth step is sodium carbonate or lime, and 1000g of the pH regulator is added into each ton of scavenged sulfur tailings;
in the fourth step, the inhibitor is water glass, and 2000g of water glass is added into each ton of scavenged sulfur tailings added with the pH regulator;
the collecting agent in the fourth step is CF, and CF500g is added into the scavenged sulfur tailings with the pH regulator and the inhibitor added into each ton of the scavenged sulfur tailings; the collecting agent CF is a medicament obtained after the oxidized paraffin is saponified;
step five, concentrating and heating the tungsten rough concentrate in the step four, adding an inhibitor and a collecting agent to heat and stir the ore pulp for 1 hour, uniformly stirring, inflating and scraping bubbles, attaching purposeful mineral white tungsten on the bubbles, scraping until the bubbles become white and have no bubbles, concentrating the scraped foam products to obtain tungsten concentrate, selecting concentration times according to required standards, adding the collecting agent into the rest, stirring for fine scavenging, scraping bubbles, wherein the collected foam products are tungsten concentrate, the rest are tungsten heated tailings, and scavenging is finished when no mineral is attached to the bubbles;
adding a collecting agent into the tungsten tailings in the fourth step for scavenging, scraping until no ore is attached to the foam, stopping foam scraping and inflating, wherein the ore pulp after scavenging is the final tailings, and the scavenging times of the tungsten tailings are selected according to the requirements;
the inhibitor in the step five is water glass and CG2, the adding amount of the water glass is 40000g per ton, the adding amount of the CG2 is 100g per ton, and the CG2 is made of Na2S, NaOH, Ca salt, Mg salt, Na2S: NaOH: ca salt: the molar ratio of Mg salt is 2:1:1: 1;
and the collector in the fifth step is CF, the adding amount of the tungsten rough concentrate during concentration is 50g per ton, and the adding amount of the tungsten tailings during scavenging is 100g per ton.
2. The method for grading tungsten-molybdenum ore according to claim 1, wherein the ore pulp in the fifth step is maintained at a concentration of 55-65% by weight and at a temperature of 85-95 ℃.
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| CN110918249A (en) * | 2019-12-04 | 2020-03-27 | 沈阳有色金属研究院有限公司 | Beneficiation process for tungsten-molybdenum-silver polymetallic ore |
| CN111250246B (en) * | 2020-04-02 | 2021-04-09 | 郑州大学 | Method for preparing cementing material by using tungsten-molybdenum tailings valuable mineral step separation component |
| CN111495551B (en) * | 2020-04-14 | 2021-09-10 | 湖南柿竹园有色金属有限责任公司 | Process for roughing molybdenum sulfide ore |
| CN111841899A (en) * | 2020-08-03 | 2020-10-30 | 江西都昌金鼎钨钼矿业有限公司 | Combined type scheelite collecting agent for low-temperature sorting of low-grade tungsten molybdenum ore and sorting method |
| CN112892853B (en) * | 2021-03-11 | 2022-05-10 | 武汉理工大学 | Comprehensive recovery beneficiation process for wolframite and associated valuable metals thereof |
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| CN102671769B (en) * | 2012-05-14 | 2014-02-26 | 长沙矿冶研究院有限责任公司 | Beneficiation method for flotation and recovery of molybdenum from easy-floating gangue refractory molybdenum ore |
| CN103128004B (en) * | 2013-01-07 | 2015-04-29 | 湖南有色金属研究院 | Method for flotation and separation of copper molybdenum sulphide bulk concentrates |
| RU2013103943A (en) * | 2013-01-29 | 2014-08-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования Кабардино-Балкарский государственный университет им. Х.М. Бербекова (КБГУ) | METHOD FOR PRODUCING AND PROCESSING TUNGSTEN-MOLYBDENUM ORES |
| CN104475264B (en) * | 2014-11-26 | 2017-05-17 | 广东省工业技术研究院(广州有色金属研究院) | Scheelite beneficiation method |
| CN106076590B (en) * | 2016-06-22 | 2018-06-01 | 中国地质科学院郑州矿产综合利用研究所 | Beneficiation method for separating molybdenum oxide tungsten ore and molybdenum sulfide ore in molybdenum tungsten ore |
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| CN105903552A (en) * | 2016-04-26 | 2016-08-31 | 中南大学 | Beneficiation method for effectively recovering extremely-fine-particle molybdenum ore |
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| 安徽某低品位白钨矿浮选试验研究;张虹，蓝卓越;《矿产综合利用》;20180430;第20-24页 * |
| 河南某钼矿尾中钨钼硫的选矿回收试验;周新民,宋翔宇,李翠芬;《金属矿山》;20120715;第151-154页 * |
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