CN114950723A - Method for comprehensively recovering silver and tungsten from silver-containing tungsten polymetallic ore - Google Patents
Method for comprehensively recovering silver and tungsten from silver-containing tungsten polymetallic ore Download PDFInfo
- Publication number
- CN114950723A CN114950723A CN202210565579.0A CN202210565579A CN114950723A CN 114950723 A CN114950723 A CN 114950723A CN 202210565579 A CN202210565579 A CN 202210565579A CN 114950723 A CN114950723 A CN 114950723A
- Authority
- CN
- China
- Prior art keywords
- silver
- tungsten
- tailings
- magnetic
- concentrate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 title claims abstract description 107
- 229910052721 tungsten Inorganic materials 0.000 title claims abstract description 107
- 239000010937 tungsten Substances 0.000 title claims abstract description 107
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 title claims abstract description 97
- 229910052709 silver Inorganic materials 0.000 title claims abstract description 97
- 239000004332 silver Substances 0.000 title claims abstract description 97
- 238000000034 method Methods 0.000 title claims abstract description 63
- 239000012141 concentrate Substances 0.000 claims abstract description 88
- 238000005188 flotation Methods 0.000 claims abstract description 70
- 238000007885 magnetic separation Methods 0.000 claims abstract description 24
- 239000003795 chemical substances by application Substances 0.000 claims description 35
- 229910052952 pyrrhotite Inorganic materials 0.000 claims description 30
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 21
- 230000002000 scavenging effect Effects 0.000 claims description 17
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 16
- -1 allyl isoamyl xanthate Chemical compound 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 12
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical group [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 11
- 235000019353 potassium silicate Nutrition 0.000 claims description 10
- 239000012991 xanthate Substances 0.000 claims description 10
- 238000007667 floating Methods 0.000 claims description 8
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 8
- 239000012188 paraffin wax Substances 0.000 claims description 7
- 239000000344 soap Substances 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 4
- HQABUPZFAYXKJW-UHFFFAOYSA-O butylazanium Chemical compound CCCC[NH3+] HQABUPZFAYXKJW-UHFFFAOYSA-O 0.000 claims description 3
- QTANTQQOYSUMLC-UHFFFAOYSA-O Ethidium cation Chemical compound C12=CC(N)=CC=C2C2=CC=C(N)C=C2[N+](CC)=C1C1=CC=CC=C1 QTANTQQOYSUMLC-UHFFFAOYSA-O 0.000 claims description 2
- 229960002001 ethionamide Drugs 0.000 claims description 2
- 239000003607 modifier Substances 0.000 claims description 2
- 238000010408 sweeping Methods 0.000 claims 2
- CONMNFZLRNYHIQ-UHFFFAOYSA-N 3-methylbutoxymethanedithioic acid Chemical compound CC(C)CCOC(S)=S CONMNFZLRNYHIQ-UHFFFAOYSA-N 0.000 claims 1
- USFZMSVCRYTOJT-UHFFFAOYSA-N Ammonium acetate Chemical compound N.CC(O)=O USFZMSVCRYTOJT-UHFFFAOYSA-N 0.000 claims 1
- 239000005695 Ammonium acetate Substances 0.000 claims 1
- 229940043376 ammonium acetate Drugs 0.000 claims 1
- 235000019257 ammonium acetate Nutrition 0.000 claims 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims 1
- ZOOODBUHSVUZEM-UHFFFAOYSA-N ethoxymethanedithioic acid Chemical compound CCOC(S)=S ZOOODBUHSVUZEM-UHFFFAOYSA-N 0.000 claims 1
- UORVCLMRJXCDCP-UHFFFAOYSA-M propynoate Chemical compound [O-]C(=O)C#C UORVCLMRJXCDCP-UHFFFAOYSA-M 0.000 claims 1
- 238000011084 recovery Methods 0.000 abstract description 23
- 239000003814 drug Substances 0.000 abstract description 14
- 229910052500 inorganic mineral Inorganic materials 0.000 description 22
- 239000011707 mineral Substances 0.000 description 22
- 230000000052 comparative effect Effects 0.000 description 18
- 239000006148 magnetic separator Substances 0.000 description 13
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 10
- 239000003153 chemical reaction reagent Substances 0.000 description 10
- 239000011593 sulfur Substances 0.000 description 10
- 229910052717 sulfur Inorganic materials 0.000 description 10
- 229910052946 acanthite Inorganic materials 0.000 description 8
- XUARKZBEFFVFRG-UHFFFAOYSA-N silver sulfide Chemical compound [S-2].[Ag+].[Ag+] XUARKZBEFFVFRG-UHFFFAOYSA-N 0.000 description 8
- 229940056910 silver sulfide Drugs 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 230000005389 magnetism Effects 0.000 description 6
- ZXOKVTWPEIAYAB-UHFFFAOYSA-N dioxido(oxo)tungsten Chemical compound [O-][W]([O-])=O ZXOKVTWPEIAYAB-UHFFFAOYSA-N 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 238000011160 research Methods 0.000 description 5
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 4
- WUOACPNHFRMFPN-UHFFFAOYSA-N alpha-terpineol Chemical compound CC1=CCC(C(C)(C)O)CC1 WUOACPNHFRMFPN-UHFFFAOYSA-N 0.000 description 4
- TUZCOAQWCRRVIP-UHFFFAOYSA-N butoxymethanedithioic acid Chemical compound CCCCOC(S)=S TUZCOAQWCRRVIP-UHFFFAOYSA-N 0.000 description 4
- SQIFACVGCPWBQZ-UHFFFAOYSA-N delta-terpineol Natural products CC(C)(O)C1CCC(=C)CC1 SQIFACVGCPWBQZ-UHFFFAOYSA-N 0.000 description 4
- 239000004088 foaming agent Substances 0.000 description 4
- 239000003112 inhibitor Substances 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 229940116411 terpineol Drugs 0.000 description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 3
- 235000011941 Tilia x europaea Nutrition 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- 229910052791 calcium Inorganic materials 0.000 description 3
- 238000009472 formulation Methods 0.000 description 3
- 239000004571 lime Substances 0.000 description 3
- UYKQQBUWKSHMIM-UHFFFAOYSA-N silver tungsten Chemical compound [Ag][W][W] UYKQQBUWKSHMIM-UHFFFAOYSA-N 0.000 description 3
- 229910052979 sodium sulfide Inorganic materials 0.000 description 3
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000005272 metallurgy Methods 0.000 description 2
- 229910021532 Calcite Inorganic materials 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical class O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000010436 fluorite Substances 0.000 description 1
- 239000002223 garnet Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000002687 intercalation Effects 0.000 description 1
- 238000009830 intercalation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 229910052683 pyrite Inorganic materials 0.000 description 1
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 1
- 239000011028 pyrite Substances 0.000 description 1
- 229910052611 pyroxene Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910001739 silver mineral Inorganic materials 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
Images
Classifications
-
- 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
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/30—Combinations with other devices, not otherwise provided for
-
- 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
-
- 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
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to a method for comprehensively recovering silver and tungsten from silver-containing tungsten polymetallic ores. The method comprises the steps of raw ore grinding, low-intensity magnetic separation, silver flotation, high-intensity magnetic separation and tungsten flotation. The method can realize the high-efficiency enrichment and comprehensive recovery of useful components in the silver-containing tungsten polymetallic ore, can finally obtain silver concentrate and tungsten concentrate, and has the advantages of short process, low medicament consumption and advanced index.
Description
Technical Field
The invention relates to the technical field of mineral separation, in particular to a method for comprehensively recovering silver and tungsten from silver-containing tungsten polymetallic ores.
Technical Field
Silver is a precious metal, widely used in jewelry, utensils, religious letters, medicines and the like, has strong conductivity, ductility, heat conductivity and oxidizability, and is widely used in the electronic industry and parts of power generation equipment. Tungsten is a metal with a very high melting point, has high hardness, good high-temperature strength and high tensile strength, has tensile strength exceeding that of any metal at high temperature, has good electrical conductivity and thermal conductivity and low heat dissipation coefficient, and has very high chemical stability and corrosion resistance. Silver has strong thiophilic property, exists in the form of silver sulfide in the process of forming ores, is commonly symbiotic with pyrrhotite, pyrite and other sulfide ores, and is commonly symbiotic with valuable elements such as tungsten and the like to form silver-tungsten paragenetic ores. Although the tungsten minerals are various in types, the tungsten minerals with the recovery significance are mainly wolframite and scheelite, the storage capacity of the scheelite is far larger than that of the wolframite, the wolframite is good in crystallization, coarse in granularity, high in specific gravity, deep in color and easy to select, and the wolframite is the tungsten mineral which is firstly obtained, developed and utilized, but the wolframite is little in quantity after long-term large-scale development and utilization. In contrast, the scheelite has fine embedded particle size, low specific gravity, light color and large difficulty in dressing and metallurgy, but the scheelite becomes a tungsten mineral which is mainly developed and utilized along with the progress of dressing and metallurgy technology. Tungsten minerals in the silver-tungsten paragenetic mineral are mainly scheelite, and the silver-tungsten paragenetic mineral has the characteristics of many valuable elements, complex properties and the like, is difficult to develop and utilize, has low mineral separation indexes due to the lack of reasonable technology, and loses a large amount of valuable resources in tailings.
Recovery for scheeliteThe technology has been reported in research. Studies on ordinary-temperature flotation of scheelite [ J]Chinese tungsten industry 2010(06) (18-20) carries out scheelite flotation research on molybdenum tailings in goldenland areas, under the condition that the raw ore grade is about 0.062%, rough tungsten concentrate is obtained by adopting normal-temperature rough concentration, rough tungsten concentrate is obtained by adopting an improved 'Pedelov' method to carry out heating concentration, and scheelite concentrate WO obtained by a closed-loop test is obtained 3 The grade is 22.56 percent, and the recovery rate reaches 83.02 percent. Application of Wuhaiyan et al (Wuhaiyan et al. novel collecting agent ZL in scheelite flotation [ J]Chinese tungsten industry, 2019(05):25-30) performs a systematic collecting agent flotation exploration test on a certain scheelite in Jiangxi, adopts sodium carbonate as a regulator, sodium silicate as an inhibitor and ZL as a collecting agent in the scheelite flotation, and performs a closed-circuit flotation test on the scheelite to obtain a scheelite containing WO 3 66.80 percent and the recovery rate of 88.49 percent. Beam-friendlily (Beam-friendlily, noble country certain place scheelite ore dressing experimental research [ J)]Comprehensive utilization of mineral products 2010(02):3-6) research on certain mineral in Guizhou, and finally obtain WO by adopting a float-repeat combined process 3 74.39% and the recovery rate is 32.28% WO 3 40.51% and 52.74% recovery. The invention discloses a scheelite flotation method, which is characterized in that a composition of lignocellulose intercalation modified montmorillonite and carboxymethyl cellulose with a mass ratio of 70: 30-85: 15 is selected as an inhibitor, and when the addition amount of the inhibitor is 300-500 g/t, flotation at normal temperature can be realized, and the recovery rate and grade of the obtained concentrate are remarkably improved compared with a flotation method using water glass as the inhibitor. At present, no literature report of the comprehensive recovery technology of mineral dressing exists for the method for comprehensively recovering silver and tungsten from silver-containing tungsten polymetallic ores.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a method for comprehensively recovering silver and tungsten from silver-containing tungsten polymetallic ores. The method can realize the high-efficiency enrichment and comprehensive recovery of useful components in the silver-containing tungsten polymetallic ore, can finally obtain silver concentrate and tungsten concentrate, and has the advantages of short process, low medicament consumption and advanced index.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for comprehensively recovering silver and tungsten from silver-containing tungsten polymetallic ores comprises the following steps:
s1, grinding raw ores: grinding raw ore to-0.074 mm, wherein the raw ore accounts for 60-85%;
s2, low-intensity magnetic separation: carrying out low-intensity magnetic separation on the ground product to obtain pyrrhotite concentrate and low-intensity magnetic tailings;
s3, silver flotation: concentrating the weak magnetic tailings until the concentration of ore pulp is 25-35%, adding 500-1000 g/t of regulator and 50-120 g/t of collecting agent according to the weight of ore feeding, and performing rough concentration; then adding 15 g/t-50 g/t of collecting agent for scavenging; adding 200 g/t-800 g/t of regulator, and carrying out concentration for two to three times to obtain silver concentrate and floating silver tailings;
s4, strong magnetic separation: performing strong-magnetic roughing on the floating silver tailings to obtain strong-magnetic roughing tailings and strong-magnetic roughing concentrate;
performing strong magnetic concentration on the strong magnetic rough concentration concentrate to obtain strong magnetic concentration tailings and strong magnetic products;
s5, tungsten flotation: combining strong magnetic concentration tailings and strong magnetic roughing tailings into strong magnetic tailings, concentrating until the concentration of ore pulp is 25% -35%, adding 500-1000 g/t of regulator A and 2000-4000 g/t of regulator B according to the weight of ore feeding, stirring, and stirring 100-300 g/t of collecting agent to perform roughing; adding collecting agent 30-60 g/t for scavenging; adding 100-800 g/t of regulator B, and carrying out concentration for four to six times to obtain tungsten concentrate and floating tungsten tailings; the regulator A is one or two of sodium carbonate or sodium hydroxide; the regulator B is water glass.
The silver-containing tungsten polymetallic ore is mainly characterized by multiple valuable element types, complex gangue composition, weak magnetic silicon-containing gangue minerals, non-magnetic calcium-containing gangue minerals and strong magnetic pyrrhotite. The amount of silver minerals and scheelite is small, and in order to obtain high-grade silver concentrate and tungsten concentrate, the strong-magnetism pyrrhotite and the weak-magnetism siliceous gangue need to be removed in advance by adopting a reasonable process flow, and the calcium-containing gangue minerals are inhibited by adopting a reasonable process flow and a medicament system. Therefore, the effective recovery of silver and tungsten from silver-bearing tungsten polymetallic ores puts high demands on the combination of beneficiation processes and beneficiation reagents.
The inventor of the invention provides a beneficiation method of silver-containing tungsten polymetallic ore through repeated research, combines the special properties of the silver-containing tungsten polymetallic ore, and effectively recovers silver and tungsten in the ore by adopting the process flow of mutually combining weak magnetic separation, silver sulfide flotation, strong magnetic separation and scheelite flotation.
Specifically, the pyrrhotite has huge floatability difference, and the pyrrhotite with excellent floatability is easy to enter silver concentrate in the silver sulfide optimal floating process, so that the grade and the recovery rate of the silver concentrate are low, while the pyrrhotite with extremely poor floatability is difficult to effectively remove by flotation, so that the subsequent scheelite flotation is extremely adversely affected, and the scheelite concentrate has over-standard sulfur, low grade and unqualified concentrate. The magnetic difference of the pyrrhotite is very large, most of the pyrrhotite has strong magnetism, and a small part of the pyrrhotite has weak magnetism. The floatability of the silver sulfide mineral is good, and silver sulfide preferential flotation can be carried out on the tailings of the low-intensity magnetic separation pyrrhotite to obtain silver concentrate. The pyrrhotite with poor flotability and weak magnetism and the gangue minerals with weak magnetism such as pyroxene and garnet exist in the silver flotation tailings, and the pyrrhotite with weak magnetism and the gangue minerals with weak magnetism can be effectively removed by adopting strong magnetic separation, so that the adverse effect of the pyrrhotite on tungsten flotation can be effectively avoided, the mineral feeding amount of the tungsten flotation is greatly reduced, and the mineral feeding grade of the tungsten flotation is improved. The strong magnetic separation tailings adopt water glass and the like as regulators, are stirred to strengthen effective inhibition on calcite, fluorite and other calcium-containing gangue, and realize the scheelite flotation under the normal temperature condition to obtain tungsten concentrates. The process that the weak magnetic separation and the strong magnetic separation are combined is adopted, the interference of the pyrrhotite with huge floatability difference and large magnetic difference in the silver-containing tungsten polymetallic ore to the silver flotation is effectively solved, and the interference of the pyrrhotite and the weak magnetic gangue minerals to the white tungsten flotation is avoided, so that high-grade silver concentrate and qualified white tungsten concentrate are obtained.
According to the method, the effective enrichment and comprehensive recovery of useful components in the silver-containing tungsten polymetallic ore can be realized, the silver concentrate and the tungsten concentrate can be finally obtained, the process is short, the medicament dosage is low, and the index is advanced.
Preferably, the magnetic field intensity of the low-intensity magnetic separation in S2 is 0.15T-0.45T
Preferably, in S2, low-intensity magnetic separation is performed by using a low-intensity magnetic separator.
Preferably, the modifier in the roughing of S3 is one or both of sodium carbonate and sodium hydroxide.
Preferably, the collector in the roughing of S3 is one or more of Z200, butyl ammonium black, ethidium azopropynyl, butyl propynyl xanthate, isoamyl propynyl xanthate or isoamyl propynyl xanthate.
Preferably, the roughing process in S3 is: concentrating the weak magnetic tailings until the concentration of the ore pulp is 25-35%, adding 500-1000 g/t of regulator according to the weight of ore feeding, and stirring for 2-3 minutes; then adding 50-120 g/t of collecting agent, stirring for 1-2 minutes, and performing rough concentration.
Preferably, the scavenging process in S3 is: adding 10-30 g/t of collecting agent for primary scavenging; then adding 5-20 g/t of collecting agent for secondary scavenging.
Preferably, the collector in the scavenging of S3 is one or more of Z200, butyl ammonium nigrum, ethionamide propynyl ester, butyl propynyl xanthate, isoamyl propynyl xanthate or isoamyl propynyl xanthate.
Preferably, in S4, strong magnetic separation is performed by using a strong magnetic separator.
Preferably, in the strong magnetic roughing of S4, the magnetic field strength is 0.6T to 0.8T.
Preferably, in the strong magnetic selection of S4, the magnetic field strength is 0.5T to 0.7T.
Preferably, the roughing process in S5 is: adding 500-1000 g/t of regulator A and 2000-4000 g/t of regulator B, stirring for 8-20 minutes and 100-300 g/t of collecting agent, and stirring for 2-4 minutes to perform rough separation.
Preferably, the scavenging process in S5 is: adding 20-40 g/t of collecting agent for primary scavenging; then adding 10 g/t-20 g/t of collecting agent for secondary scavenging.
Preferably, the collector in the scavenging of S5 is one or both of oxidized paraffin soap or sulfonated oxidized paraffin.
Preferably, the raw ore is a silver-containing tungsten polymetallic ore.
Compared with the prior art, the invention has the following beneficial effects:
the method can realize the high-efficiency enrichment and comprehensive recovery of useful components in the silver-containing tungsten polymetallic ore, can finally obtain silver concentrate and tungsten concentrate, and has the advantages of short flow, low medicament consumption and advanced index.
Drawings
FIG. 1 is a process flow diagram of example 1.
Detailed Description
The invention is further illustrated by the following examples. These examples are intended to illustrate the invention and are not intended to limit the scope of the invention. Experimental procedures without specific conditions noted in the examples below, generally according to conditions conventional in the art or as suggested by the manufacturer; the raw materials, reagents and the like used are, unless otherwise specified, those commercially available from the conventional markets and the like. Any insubstantial changes and substitutions made by those skilled in the art based on the present invention are intended to be covered by the claims.
Example 1
A beneficiation method of silver-containing tungsten polymetallic ore comprises the following specific processes, and the flow is shown in figure 1, and comprises the following steps:
s1, grinding raw ore to-0.074 mm, wherein the raw ore accounts for 60%;
s2, feeding the product after ore grinding into a low-intensity magnetic separator for low-intensity magnetic separation, and adjusting the magnetic field intensity to be 0.15T to obtain pyrrhotite concentrate and low-intensity magnetic tailings;
s3, concentrating the weak magnetic tailings until the concentration of the ore pulp is 35%, adding a silver flotation reagent for silver flotation to obtain silver concentrate and silver flotation tailings;
s4, feeding the silver flotation tailings into a high-gradient strong magnetic separator for strong magnetic roughing, adjusting the magnetic field intensity to be 0.8T to obtain strong magnetic rough concentrate and strong magnetic roughing tailings, feeding the strong magnetic rough concentrate into the high-gradient strong magnetic separator for strong magnetic concentration, and adjusting the magnetic field intensity to be 0.7T to obtain strong magnetic products and strong magnetic concentration tailings;
s5, combining and concentrating the strong magnetic roughing tailings and the strong magnetic fine tailings until the concentration of ore pulp is 35%, adding a tungsten flotation reagent, and performing scheelite flotation to obtain tungsten concentrate and tungsten flotation tailings.
The specific medicament use cases are shown in table 1. The ore feeding is a certain silver-containing tungsten polymetallic ore in the Jiangxi, and specific indexes are shown in a table 6.
Example 2
A beneficiation method of silver-containing tungsten polymetallic ore comprises the following steps:
s1, grinding raw ore to-0.074 mm, wherein the raw ore accounts for 85%;
s2, feeding the product after ore grinding into a low-intensity magnetic separator for low-intensity magnetic separation, and adjusting the magnetic field intensity to be 0.45T to obtain pyrrhotite concentrate and low-intensity magnetic tailings;
s3, concentrating the weak magnetic tailings until the concentration of the ore pulp is 25%, adding a silver flotation reagent for silver flotation to obtain silver concentrate and silver flotation tailings;
s4, feeding the floating silver tailings into a high-gradient strong magnetic separator to perform strong magnetic roughing, adjusting the magnetic field intensity to be 0.6T to obtain strong magnetic rough concentrate and strong magnetic roughing tailings, feeding the strong magnetic rough concentrate into the high-gradient strong magnetic separator to perform strong magnetic concentration, and adjusting the magnetic field intensity to be 0.5T to obtain strong magnetic products and strong magnetic concentration tailings;
s5, combining and concentrating the strong magnetic roughing tailings and the strong magnetic fine tailings until the concentration of the ore pulp is 25%, adding a tungsten flotation reagent, and performing scheelite flotation to obtain tungsten concentrate and tungsten flotation tailings.
The specific medicament use cases are shown in table 1. The ore feeding is a certain silver-containing tungsten polymetallic ore in inner Mongolia, and the specific indexes are shown in Table 6.
Example 3
A beneficiation method of a silver-containing tungsten polymetallic ore comprises the following steps:
s1, grinding raw ore to-0.074 mm, wherein the raw ore accounts for 75%;
s2, feeding the product after ore grinding into a low-intensity magnetic separator for low-intensity magnetic separation, and adjusting the magnetic field intensity to be 0.35T to obtain pyrrhotite concentrate and low-intensity magnetic tailings;
s3, concentrating the weak magnetic tailings until the concentration of the ore pulp is 30%, adding a silver flotation reagent for silver flotation to obtain silver concentrate and silver flotation tailings;
s4, feeding the silver flotation tailings into a high-gradient strong magnetic separator for strong magnetic roughing, adjusting the magnetic field intensity to be 0.7T to obtain strong magnetic rough concentrate and strong magnetic roughing tailings, feeding the strong magnetic rough concentrate into the high-gradient strong magnetic separator for strong magnetic concentration, and adjusting the magnetic field intensity to be 0.6T to obtain strong magnetic products and strong magnetic concentration tailings;
s5, combining and concentrating the strong magnetic roughing tailings and the strong magnetic fine tailings until the concentration of the ore pulp is 30%, adding a tungsten flotation reagent, and performing scheelite flotation to obtain tungsten concentrate and tungsten flotation tailings.
The specific medicament use cases are shown in table 2. The ore feeding is a certain silver-containing tungsten polymetallic ore in inner Mongolia, and the specific indexes are shown in Table 6.
Table 1 use of the agents of examples 1 and 2
Table 2 use of the agent of example 3
Comparative example 1
The existing beneficiation method of the silver-containing tungsten polymetallic ore comprises the following steps:
s1, grinding raw ore to-0.074 mm, wherein the raw ore accounts for 60%;
s2, adding a product after grinding into ore into a collecting agent butyl xanthate and foaming agent terpineol oil for mixed flotation to obtain sulfide ore bulk concentrate and float sulfur tailings;
s3, adding a regulator lime to inhibit pyrrhotite in the bulk concentrate, and performing silver sulfide flotation to obtain silver concentrate and pyrrhotite concentrate;
s4, adding sodium carbonate and water glass serving as regulators into the sulfur flotation tailings to inhibit gangue, and adding a collecting agent oxidized paraffin soap to perform normal-temperature white tungsten flotation to obtain white tungsten rough concentrate and tungsten flotation tailings;
s5, adding water glass serving as a regulator, sodium hydroxide and sodium sulfide into the scheelite rough concentrate to carry out heating concentration, and obtaining scheelite concentrate and tungsten heating tailings.
The specific use condition of the medicament is shown in table 3, the ore feeding is the same as the example 1, the medicament is a certain tungsten polymetallic ore containing silver in the west and the river, and the specific indexes are shown in table 6.
Comparative example 2
The existing beneficiation method of the silver-containing tungsten polymetallic ore comprises the following steps:
s1, grinding raw ore to-0.074 mm, wherein the raw ore accounts for 85%;
s2, adding a product after grinding into ore into a collecting agent butyl xanthate and foaming agent terpineol oil for mixed flotation to obtain sulfide ore bulk concentrate and float sulfur tailings;
s3, adding a regulator lime to inhibit pyrrhotite in the bulk concentrate, and performing silver sulfide flotation to obtain silver concentrate and pyrrhotite concentrate;
s4, adding sodium carbonate and water glass serving as regulators into the sulfur flotation tailings to inhibit gangue, and adding a collecting agent oxidized paraffin soap to perform normal-temperature white tungsten flotation to obtain white tungsten rough concentrate and tungsten flotation tailings;
s5, adding water glass serving as a regulator, sodium hydroxide and sodium sulfide into the scheelite rough concentrate to carry out heating concentration, and obtaining scheelite concentrate and tungsten heating tailings.
The specific use condition of the medicament is shown in table 4, the ore is the same as the ore in example 2, the medicament is a certain silver-containing tungsten polymetallic ore in inner Mongolia, and the specific index is shown in table 6.
Comparative example 3
The existing beneficiation method of the silver-containing tungsten polymetallic ore comprises the following steps:
s1, grinding raw ore to-0.074 mm, wherein the raw ore accounts for 75%;
s2, adding a product after grinding into ore into a collecting agent butyl xanthate and foaming agent terpineol oil for mixed flotation to obtain sulfide ore bulk concentrate and float sulfur tailings;
s3, adding a regulator lime to inhibit pyrrhotite in the bulk concentrate, and performing silver sulfide flotation to obtain silver concentrate and pyrrhotite concentrate;
s4, adding adjusting agents sodium carbonate and water glass into the sulfur flotation tailings to inhibit gangue, and then adding a collecting agent oxidized paraffin soap to perform normal-temperature white tungsten flotation to obtain white tungsten rough concentrate and tungsten flotation tailings;
s5, adding water glass serving as a regulator, sodium hydroxide and sodium sulfide into the scheelite rough concentrate to carry out heating concentration, and obtaining scheelite concentrate and tungsten heating tailings.
The specific use condition of the medicament is shown in Table 5, the ore is the same as the ore in example 3, the ore is a certain silver-containing tungsten polymetallic ore in inner Mongolia, and the specific index is shown in Table 6.
Comparative example 4
The beneficiation method of the silver-containing tungsten polymetallic ore basically comprises the following steps of:
s1, grinding raw ore to-0.074 mm, wherein the raw ore accounts for 60%;
s2, adding the product after grinding into a silver flotation reagent for silver flotation to obtain silver concentrate and silver flotation tailings;
s3, adding collecting agent butyl xanthate and foaming agent terpineol oil into the silver-bearing tailings to perform pyrrhotite flotation, so as to obtain pyrrhotite concentrate and sulfur-bearing tailings;
s4, feeding the sulfur flotation tailings into a high-gradient strong magnetic separator for strong magnetic roughing, adjusting the magnetic field intensity to be 0.8T to obtain strong magnetic rough concentrate and strong magnetic roughing tailings, feeding the strong magnetic rough concentrate into the high-gradient strong magnetic separator for strong magnetic concentration, and adjusting the magnetic field intensity to be 0.7T to obtain strong magnetic products and strong magnetic concentration tailings;
s5, combining and concentrating the strong magnetic roughing tailings and the strong magnetic fine tailings until the concentration of ore pulp is 35%, adding a tungsten flotation reagent, and performing scheelite flotation to obtain tungsten concentrate and tungsten flotation tailings.
The specific agents are shown in Table 1 (same as example 1). The ore is a certain silver-containing tungsten polymetallic ore in Jiangxi (same as example 1), and specific indexes are shown in Table 6.
TABLE 3 use of the formulation of comparative example 1
Table 4 use of the formulation of comparative example 2
TABLE 5 use of the formulation of comparative example 3
The results of selecting the examples and comparative examples are shown in Table 6.
TABLE 6 beneficiation indicators for each example and comparative example
As can be seen from the mineral dressing indexes of the above examples and comparative examples, the present invention is adoptedThe silver-containing tungsten polymetallic ore is treated by the technology (ore dressing technology of sulfur-containing tungsten polymetallic ore, comparative examples 1-3), the grade of the obtained silver concentrate Ag is 5063g/t at most, the recovery rate is 80.35%, and the tungsten concentrate WO is 3 The grade can reach 64.09%, and the recovery rate can reach 74.33%.
The indexes obtained by the method are obviously higher than those obtained by the prior art, and the method has obvious progress. Specifically, the grade of the silver concentrate obtained by the method of the invention in example 1 is 852g/t higher, the recovery rate is 5.76% higher, the grade of the tungsten concentrate obtained by the method of the invention is basically consistent with that of the tungsten concentrate obtained by the prior art (comparative example 1), but the recovery rate of the tungsten concentrate obtained by the method of the invention is 8.10% higher than that of the comparative example 1; in example 2, the grade of the silver concentrate obtained by the method is high at 1553g/t, the recovery rate is high at 8.15%, the grade of the tungsten concentrate obtained by the method is basically consistent with that obtained by the prior art (comparative example 2), but the recovery rate of the tungsten concentrate obtained by the method is higher than that obtained by the comparative example 2 by 9.12%. In example 3, the grade of the silver concentrate obtained by the method of the invention is 271g/t, the recovery rate is 4.88 percent, the grade of the tungsten concentrate obtained by the method of the invention is basically consistent with that of the tungsten concentrate obtained by the prior art (comparative example 3), but the recovery rate of the tungsten concentrate obtained by the method of the invention is 6.42 percent higher than that of the comparative example 3. In the comparative example 4, the grade of the obtained silver concentrate is only 3012g/t due to the lack of the low-intensity magnetic separation pyrrhotite, compared with the grade of the silver concentrate obtained by adopting the embodiment 1 of the invention, the grade is greatly reduced by 2396g/t, the silver recovery rate is also reduced by 8.09%, and the fact that the removal of the pyrrhotite in advance by adopting the low-intensity magnetic separation is very important for improving the grading index of silver is shown.
While the foregoing is directed to particular example embodiments of the present invention, numerous modifications and adaptations may be made by those skilled in the art without departing from the principles of the present invention. Rather, the scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A method for comprehensively recovering silver and tungsten from silver-containing tungsten polymetallic ores is characterized by comprising the following steps:
s1, grinding raw ores: grinding raw ore to-0.074 mm, wherein the raw ore accounts for 60-85%;
s2, low-intensity magnetic separation: carrying out low-intensity magnetic separation on the ground product to obtain pyrrhotite concentrate and low-intensity magnetic tailings;
s3, silver flotation: concentrating the weak magnetic tailings until the concentration of ore pulp is 25-35%, adding 500-1000 g/t of regulator and 50-120 g/t of collecting agent according to the weight of ore feeding, and performing rough concentration; then adding 15 g/t-50 g/t of collecting agent for scavenging; adding 200 g/t-800 g/t of regulator, and carrying out concentration for two to three times to obtain silver concentrate and floating silver tailings;
s4, strong magnetic separation: performing strong-magnetic roughing on the floating silver tailings to obtain strong-magnetic roughing tailings and strong-magnetic roughing concentrate;
performing strong magnetic concentration on the strong magnetic rough concentration concentrate to obtain strong magnetic concentrated tailings and strong magnetic products;
s5, tungsten flotation: combining strong magnetic concentration tailings and strong magnetic roughing tailings into strong magnetic tailings, concentrating until the concentration of ore pulp is 25% -35%, adding 500-1000 g/t of regulator A and 2000-4000 g/t of regulator B according to the weight of ore feeding, stirring, and stirring 100-300 g/t of collecting agent to perform roughing; adding collecting agent 30-60 g/t for scavenging; adding 100-800 g/t of regulator B, and carrying out concentration for four to six times to obtain tungsten concentrate and floating tungsten tailings; the regulator A is one or two of sodium carbonate or sodium hydroxide; the regulator B is water glass.
2. The method of claim 1, wherein the magnetic field strength of the low-intensity magnetic separation in S2 is 0.15T-0.45T.
3. The method according to claim 1, wherein the modifier in the roughing of S3 is one or both of sodium carbonate and sodium hydroxide;
in the rough concentration of S3, the collecting agent is one or more of Z200, ammonium acetate, ethidium propiolate, butyl propinyl xanthate, propinyl isoamyl xanthate or allyl isoamyl xanthate;
and in the scavenging of S3, the collector is one or more of Z200, butyl ammonium nigride, ethionamide propynyl ester, butyl propynyl xanthate, isoamyl propynyl xanthate or isoamyl propenyl xanthate.
4. The method of claim 1, wherein the roughing process in S3 is: concentrating the weak magnetic tailings until the concentration of the ore pulp is 25-35%, adding 500-1000 g/t of regulator according to the weight of ore feeding, and stirring for 2-3 minutes; then adding 50-120 g/t of collecting agent, stirring for 1-2 minutes, and performing rough concentration.
5. The method of claim 1, wherein the sweeping in S3 comprises: adding 10-30 g/t of collecting agent for primary scavenging; then adding collecting agent 5-20 g/t for secondary scavenging.
6. The method according to claim 1, wherein in the strong magnetic rough selection of S4, the magnetic field strength is 0.6T-0.8T; and in the strong magnetic fine selection of S4, the magnetic field intensity is 0.5T-0.7T.
7. The method of claim 1, wherein the roughing process in S5 is: adding 500-1000 g/t of regulator A and 2000-4000 g/t of regulator B, stirring for 8-20 minutes and 100-300 g/t of collecting agent, and stirring for 2-4 minutes to perform rough separation.
8. The method of claim 1, wherein the sweeping in S5 comprises: adding 20-40 g/t of collecting agent for primary scavenging; then adding 10 g/t-20 g/t of collecting agent for secondary scavenging.
9. The method of claim 1, wherein the collector in S5 is one or both of oxidized paraffin soap and sulfonated oxidized paraffin.
10. The method of claim 1, wherein the raw ore is a silver-containing tungsten polymetallic ore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210565579.0A CN114950723B (en) | 2022-05-23 | 2022-05-23 | Method for comprehensively recovering silver and tungsten from silver-containing tungsten polymetallic ore |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210565579.0A CN114950723B (en) | 2022-05-23 | 2022-05-23 | Method for comprehensively recovering silver and tungsten from silver-containing tungsten polymetallic ore |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114950723A true CN114950723A (en) | 2022-08-30 |
| CN114950723B CN114950723B (en) | 2024-04-26 |
Family
ID=82986013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210565579.0A Active CN114950723B (en) | 2022-05-23 | 2022-05-23 | Method for comprehensively recovering silver and tungsten from silver-containing tungsten polymetallic ore |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114950723B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102441482A (en) * | 2011-09-30 | 2012-05-09 | 广州有色金属研究院 | Mineral separation method for scheelite containing rich pyrrhotite |
| CN107617508A (en) * | 2017-09-19 | 2018-01-23 | 中国地质科学院郑州矿产综合利用研究所 | Fine-grain tungsten-tin associated ore beneficiation process |
| CN109092548A (en) * | 2018-08-21 | 2018-12-28 | 重庆天泽兴环境科技有限公司 | The method of rare precious metal is extracted in fluorite tailing |
| CN109590115A (en) * | 2018-12-24 | 2019-04-09 | 中南大学 | A kind of mineral floating collecting agent and its preparation method and application |
| CN110614159A (en) * | 2019-08-20 | 2019-12-27 | 湖南柿竹园有色金属有限责任公司 | Pre-enrichment method before black and white tungsten separation |
| 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 |
| CN113976304A (en) * | 2021-10-27 | 2022-01-28 | 广东省科学院资源利用与稀土开发研究所 | Beneficiation method for comprehensively recovering tungsten tin bismuth silicon from skarn type tin tailings |
-
2022
- 2022-05-23 CN CN202210565579.0A patent/CN114950723B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102441482A (en) * | 2011-09-30 | 2012-05-09 | 广州有色金属研究院 | Mineral separation method for scheelite containing rich pyrrhotite |
| CN107617508A (en) * | 2017-09-19 | 2018-01-23 | 中国地质科学院郑州矿产综合利用研究所 | Fine-grain tungsten-tin associated ore beneficiation process |
| CN109092548A (en) * | 2018-08-21 | 2018-12-28 | 重庆天泽兴环境科技有限公司 | The method of rare precious metal is extracted in fluorite tailing |
| CN109590115A (en) * | 2018-12-24 | 2019-04-09 | 中南大学 | A kind of mineral floating collecting agent and its preparation method and application |
| CN110614159A (en) * | 2019-08-20 | 2019-12-27 | 湖南柿竹园有色金属有限责任公司 | Pre-enrichment method before black and white tungsten separation |
| 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 |
| CN113976304A (en) * | 2021-10-27 | 2022-01-28 | 广东省科学院资源利用与稀土开发研究所 | Beneficiation method for comprehensively recovering tungsten tin bismuth silicon from skarn type tin tailings |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114950723B (en) | 2024-04-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101869876B (en) | Ore dressing method of low-grade scheelite | |
| CN103551245B (en) | Complex multi-metal micro fine particle sulphide ore is carried out to the beneficiation method of synthetical recovery | |
| CN100515576C (en) | Super fine lean lead-antimony-zinc flacculation carrier flotation technology | |
| CN103301946B (en) | Grading and branching streaming flotation method of tungsten ore | |
| CN103691569A (en) | Flotation method for high-sulfur gold-bearing copper ore | |
| CN107971127B (en) | Beneficiation method for separating bismuth and sulfur in bismuth-sulfur concentrate | |
| CN104148163B (en) | A kind of beneficiation method processing low-grade tin-lead-zinc multi-metal oxygen ore deposit | |
| CN110170381B (en) | Beneficiation method for recovering cassiterite from tin-copper paragenic ore | |
| CN113976304B (en) | Mineral separation method for comprehensively recovering tungsten, tin, bismuth and silicon from skarn type tin tailings | |
| CN102896050A (en) | Pyrrhotite flotation inhibitor, preparation and application thereof, and copper-nickel sulfide ore beneficiation method | |
| CN101507950A (en) | Mineral separation process capable of recovering micro scheelite from scheelite flotation tailings | |
| CN105903571B (en) | A kind of efficient flotation separation method of high arsenic high-carbon gold mine semi-oxidized | |
| CN109290062B (en) | Oxide ore flotation miscible collector and using method thereof | |
| CN101054625A (en) | Method forpreparing iron concentrate for making iron from phosphorus-containing oolitic hematite | |
| CN107899755B (en) | Synergist for flotation of refractory copper oxide ore | |
| CN111298982B (en) | High-efficiency collecting agent for copper and gold in copper smelting slag by pyrometallurgy and application of high-efficiency collecting agent | |
| CN101823024B (en) | Natural bismuth mineral beneficiation method | |
| CN114950723A (en) | Method for comprehensively recovering silver and tungsten from silver-containing tungsten polymetallic ore | |
| CN112221719B (en) | Method for improving recovery rate of associated gold from low-grade copper-sulfur ore | |
| CN110420760B (en) | Beneficiation and recovery method of silver copper ore | |
| CN107876214B (en) | Copper-containing magnetite ore sorting method | |
| CN103817011A (en) | Carbon inhibitor and application thereof in molybdenum-nickel flotation from high-carbon molybdenum-nickel ores | |
| CN114011582A (en) | Flotation method for improving beneficiation index of gold-bearing copper sulfide ore | |
| CN103657860B (en) | The method of reverse flotation enrichment zinc silicate mineral in acid condition | |
| CN114950724B (en) | Mineral separation method for recovering valuable components of complex scheelite at normal temperature |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |