CN116727114A - Method for recycling lepidolite through short-process flotation - Google Patents
Method for recycling lepidolite through short-process flotation Download PDFInfo
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- CN116727114A CN116727114A CN202310885363.7A CN202310885363A CN116727114A CN 116727114 A CN116727114 A CN 116727114A CN 202310885363 A CN202310885363 A CN 202310885363A CN 116727114 A CN116727114 A CN 116727114A
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- lepidolite
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- 229910052629 lepidolite Inorganic materials 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 title claims abstract description 56
- 238000005188 flotation Methods 0.000 title claims abstract description 44
- 238000004064 recycling Methods 0.000 title description 4
- 239000002131 composite material Substances 0.000 claims abstract description 91
- 238000011084 recovery Methods 0.000 claims abstract description 8
- 230000002000 scavenging effect Effects 0.000 claims description 58
- 239000012141 concentrate Substances 0.000 claims description 45
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 31
- 229910052744 lithium Inorganic materials 0.000 claims description 31
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 16
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 12
- CYEJMVLDXAUOPN-UHFFFAOYSA-N 2-dodecylphenol Chemical compound CCCCCCCCCCCCC1=CC=CC=C1O CYEJMVLDXAUOPN-UHFFFAOYSA-N 0.000 claims description 8
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 8
- JRBPAEWTRLWTQC-UHFFFAOYSA-N dodecylamine Chemical compound CCCCCCCCCCCCN JRBPAEWTRLWTQC-UHFFFAOYSA-N 0.000 claims description 8
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 8
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 8
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 8
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims description 6
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 6
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 6
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 claims description 6
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 claims description 6
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims description 6
- 235000019982 sodium hexametaphosphate Nutrition 0.000 claims description 6
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 12
- 239000011707 mineral Substances 0.000 abstract description 12
- 239000006260 foam Substances 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 230000005764 inhibitory process Effects 0.000 abstract description 4
- 238000009825 accumulation Methods 0.000 abstract description 3
- 230000006866 deterioration Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract 1
- 150000001412 amines Chemical class 0.000 description 4
- 239000010802 sludge Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 239000008396 flotation agent Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
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
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/018—Mixtures of inorganic and organic compounds
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/004—Organic compounds
- B03D1/012—Organic compounds containing sulfur
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/02—Froth-flotation processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/007—Modifying reagents for adjusting pH or conductivity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/02—Collectors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2203/00—Specified materials treated by the flotation agents; specified applications
- B03D2203/02—Ores
-
- 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
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to a method for recovering lepidolite by short-process flotation, and belongs to the technical field of mineral processing. Aiming at the technical problems that the traditional floatation process is long in flow, complex in operation procedure, unstable in production process and the like of middling return worsening rough concentration and concentration indexes, the invention adopts the composite regulator and the composite collector to carry out cooperative foam control and mud inhibition, promotes the enrichment effect and the separation indexes of lepidolite in the ore, can recover most lepidolite in the ore only through one rough concentration operation, can ensure the grade of the lepidolite only through one concentration operation, and realizes the short-flow floatation recovery of the lepidolite ore. The middlings generated by flotation are not returned to roughing and concentration operation, so that accumulation and circulation of the mineral slime in a flotation system are avoided, and deterioration of the mineral slime on roughing and concentration indexes is eliminated. The invention simplifies the sorting process, reduces the production energy consumption and the cost, solves the problem of high-efficiency clean utilization of lepidolite, and has remarkable economic and environmental benefits.
Description
Technical Field
The invention relates to a method for recovering lepidolite by short-process flotation, and belongs to the technical field of mineral processing.
Background
Lepidolite is an important lithium extraction raw material, and amine flotation is a method for recycling lepidolite, and has the advantages of low cost, high enrichment ratio and the like. The weathering and corrosion degree of the lepidolite ore deposit are gradually deep, the grade of raw ore is reduced, and the sliming degree is increased, so that the mineralogy of the lepidolite ore is complex, a flotation process is often added or a large amount of agents are added to regulate and control the flotation process in production, but the whole flotation process is long, the adding points are more, the investment is large and the operation is complex, and therefore, how to economically and efficiently flotation and recycle the complex refractory lepidolite with high mud content becomes a bottleneck problem which is urgently needed to be solved by the lithium industry.
In addition to the presence of a large amount of primary sludge in lepidolite ore, secondary sludge is generated during the grinding process, the surfaces of the sludge are negatively charged, a large amount of positively charged amine collectors are consumed, and the collectors are attached to the surfaces of various minerals, so that the collectors cannot selectively react with the lepidolite surfaces. In addition, the mineral mud adhered with the amines can be adhered to the mineralized foam, so that the flotation foam is combined with the mineral mud and the amine collector to be armored, the service life of the flotation foam is long, the stability is high, the circulation quantity of middlings can be increased, the fluidity of the mineral-carrying foam is extremely poor and difficult to eliminate, the phenomenon of 'running groove' is serious, and finally the flotation process is difficult to control and production is difficult to carry out.
Therefore, development of novel efficient flotation agents and process flows is needed, influence of mineral mud on lepidolite flotation is eliminated, the lepidolite resources are economically and efficiently recovered, and technical support is provided for green low-carbon efficient utilization of complex and difficult-to-process lepidolite resources.
Disclosure of Invention
Aiming at the technical problems that the traditional flotation process is long in flow, complex in operation procedure, poor in middling return and worsening rough concentration and concentration indexes, unstable in production process and the like, the invention provides a method for recycling lepidolite in short-flow flotation, namely, a composite regulator and a composite collector are adopted to carry out cooperative foam control and mud inhibition, so that enrichment effect and separation indexes of lepidolite in the ore are promoted, most lepidolite in the ore can be recycled only through one rough concentration operation, the grade of the lepidolite can be ensured only through one concentration operation, middling generated in the flotation process is not returned to rough concentration and concentration operation, accumulation and circulation of the ore mud in a flotation system are avoided, and the worsening of the ore mud on rough concentration and concentration indexes is eliminated; in addition, the fine scavenging operation not only solves the problem of stockpiling of middlings, but also effectively increases the floatation recovery rate of lepidolite.
A method for recovering lepidolite by short-process flotation comprises the following specific steps:
(1) The lepidolite ore is crushed and ground until the lepidolite ore is fully dissociated, and water is added for pulp mixing until the mass percentage concentration of the ore pulp is 32-40%;
(2) Sequentially adding a composite regulator and a composite collector into the ore pulp obtained in the step (1) to perform roughing operation to obtain roughing concentrate and roughing tailings;
(3) Sequentially adding a composite regulator and a composite collector into the rough concentrate obtained in the step (2) to carry out concentration operation to obtain lithium concentrate I and concentration tailings;
(4) Adding a composite collector into the roughing tailings obtained in the step (2) to perform scavenging operation to obtain scavenging concentrate and scavenging tailings;
(5) Combining the concentrating tailings obtained in the step (3) and the scavenging concentrate obtained in the step (4) to form mixed middlings, sequentially adding a composite regulator and a composite collector to perform fine scavenging operation to obtain lithium concentrate II and fine scavenging tailings, wherein the fine scavenging tailings return to size mixing and are combined with the scavenging operation in the step (4);
(6) Combining the lithium concentrate I obtained in the step (3) and the lithium concentrate II obtained in the step (5) to obtain a lithium concentrate product, wherein the scavenging tailings obtained in the step (4) are flotation tailings;
the composite collector is a mixture of dodecyl amine, ethanol, sodium dodecyl benzene sulfonate and dodecyl phenol polyoxyethylene ether.
Based on the mass fraction of the composite regulator being 100%, the sodium carbonate accounts for 30-40%, the sodium hexametaphosphate accounts for 40-50%, and the sodium carboxymethylcellulose accounts for 15-25%; based on the mass fraction of 100 percent of the composite collector, the composite collector comprises 30 to 40 percent of dodecylamine, 35 to 40 percent of ethanol, 20 to 25 percent of sodium dodecyl benzene sulfonate and 5 to 10 percent of dodecylphenol polyoxyethylene ether
Li in the lepidolite ore in the step (1) 2 The mass percentage content of O is 0.35-0.75%.
And (3) adding 500-700 g of a composite regulator and 400-600 g of a composite collector into the ore pulp of the rough concentration operation in the step (2) by counting each ton of lepidolite ore.
And (3) adding 100-200 g of a composite regulator and 60-100 g of a composite collector into the ore pulp of the fine selection operation in the step (3) according to each ton of lepidolite ore.
And (3) adding 80-120 g of composite collector into the ore pulp of the scavenging operation in the step (4) according to each ton of lepidolite ore.
200-300 g of composite regulator and 40-60 g of composite collector are added into the ore pulp of the fine scavenging operation in the step (5) by counting each ton of lepidolite ore.
The beneficial effects of the invention are as follows:
(1) The invention fully plays the synergistic effect of the composite medicament, realizes the efficient dispersion of the lepidolite ore with high mud content, the selective inhibition of gangue minerals and the full drainage of target minerals, can recover most of lepidolite in the ore by only adopting one roughing operation, can ensure the grade of the lepidolite by only adopting one concentration operation, and lays a foundation for short-process flotation recovery of lepidolite;
(2) The middlings generated in the flotation process are not returned to roughing and concentrating operation, so that accumulation and circulation of mineral slime in a flotation system are avoided, deterioration of mineral slime on roughing and concentrating indexes is eliminated, consumption of flotation agents is reduced, a flotation foam structure and ore carrying capacity are optimized, the problems of foam control and mud inhibition in the lepidolite flotation process are solved, and the utilization rate of lithium resources is greatly improved;
(3) The method has the advantages of simple operation, convenient use, strong controllability, simplified selection process, reduced production energy consumption and cost, improved floatation index, economically and efficiently solves the technical problems of long process, complex operation procedure, worsened rough concentration and concentration index of middling return, unstable production process and the like of the traditional floatation process of the lepidolite ore with high mud content, and realizes the short-process floatation recovery of the lepidolite ore.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
The invention will be described in further detail with reference to specific embodiments, but the scope of the invention is not limited to the description.
The flotation process in the following examples of the invention consists of one roughing, one concentrating, one scavenging and one refining scavenging, the middlings are not returned to the roughing and concentrating operation, the compound regulator is a mixture of sodium carbonate, sodium hexametaphosphate and sodium carboxymethyl cellulose, and the compound collector is a mixture of dodecyl amine, ethanol, sodium dodecyl benzene sulfonate and dodecyl phenol polyoxyethylene ether.
Example 1: in the embodiment, the mass fraction of the composite regulator is 100%, sodium carbonate accounts for 30%, sodium hexametaphosphate accounts for 50%, and sodium carboxymethylcellulose accounts for 20%; based on the mass fraction of 100% of the composite collector, the composite collector comprises 30% of dodecylamine, 40% of ethanol, 25% of sodium dodecyl benzene sulfonate and 5% of dodecylphenol polyoxyethylene ether;
a method for recovering lepidolite by short-process flotation (see figure 1), which comprises the following specific steps:
(1) The lepidolite ore is crushed and ground until the lepidolite is fully dissociated, water is added for pulp mixing until the mass percentage concentration of ore pulp is 32%, wherein Li in the lepidolite ore 2 The mass percentage content of O is 0.35%;
(2) Sequentially adding a composite regulator and a composite collector into the ore pulp obtained in the step (1) to perform roughing operation to obtain roughing concentrate and roughing tailings; adding 500g of a composite regulator and 400g of a composite collector into ore pulp of roughing operation according to each ton of lepidolite ore;
(3) Sequentially adding a composite regulator and a composite collector into the rough concentrate obtained in the step (2) to carry out concentration operation to obtain lithium concentrate I and concentration tailings; adding 100g of a composite regulator and 60g of a composite collector into ore pulp of carefully selecting operation per ton of lepidolite ore;
(4) Adding a composite collector into the roughing tailings obtained in the step (2) to perform scavenging operation to obtain scavenging concentrate and scavenging tailings; 80g of composite collector is added into ore pulp of scavenging operation according to each ton of lepidolite ore;
(5) Combining the concentrating tailings obtained in the step (3) and the scavenging concentrate obtained in the step (4) to form mixed middlings, sequentially adding a composite regulator and a composite collector to carry out fine scavenging operation to obtain lithium concentrate II and fine scavenging tailings, wherein the fine scavenging tailings return to size mixing and are combined into scavenging operation; 200g of a composite regulator and 40g of a composite collector are added into the ore pulp of the fine scavenging operation according to each ton of lepidolite ore;
(6) Combining the lithium concentrate I obtained in the step (3) and the lithium concentrate II obtained in the step (5) to obtain a lithium concentrate product, wherein the scavenging tailings obtained in the step (4) are flotation tailings;
the flotation recovery of lithium in this example was 84.7%.
Example 2: in the embodiment, the mass fraction of the composite regulator is 100%, the sodium carbonate accounts for 35%, the sodium hexametaphosphate accounts for 40%, and the sodium carboxymethylcellulose accounts for 25%; based on the mass fraction of 100% of the composite collector, 35% of dodecylamine, 35% of ethanol, 20% of sodium dodecyl benzene sulfonate and 10% of dodecylphenol polyoxyethylene ether;
a method for recovering lepidolite by short-process flotation (see figure 1), which comprises the following specific steps:
(1) The lepidolite ore is crushed and ground until the lepidolite is fully dissociated, water is added for pulp mixing until the mass percentage concentration of ore pulp is 36%, wherein Li in the lepidolite ore 2 The mass percentage content of O is 0.55%;
(2) Sequentially adding a composite regulator and a composite collector into the ore pulp obtained in the step (1) to perform roughing operation to obtain roughing concentrate and roughing tailings; adding 600g of a composite regulator and 500g of a composite collector into ore pulp of roughing operation according to each ton of lepidolite ore;
(3) Sequentially adding a composite regulator and a composite collector into the rough concentrate obtained in the step (2) to carry out concentration operation to obtain lithium concentrate I and concentration tailings; 150g of composite regulator and 80g of composite collector are added into ore pulp of the carefully selecting operation per ton of lepidolite ore;
(4) Adding a composite collector into the roughing tailings obtained in the step (2) to perform scavenging operation to obtain scavenging concentrate and scavenging tailings; adding 100g of composite collector into ore pulp of scavenging operation according to each ton of lepidolite ore;
(5) Combining the concentrating tailings obtained in the step (3) and the scavenging concentrate obtained in the step (4) to form mixed middlings, sequentially adding a composite regulator and a composite collector to carry out fine scavenging operation to obtain lithium concentrate II and fine scavenging tailings, wherein the fine scavenging tailings return to size mixing and are combined into scavenging operation; adding 250g of a composite regulator and 50g of a composite collector into ore pulp of fine scavenging operation according to each ton of lepidolite ore;
(6) Combining the lithium concentrate I obtained in the step (3) and the lithium concentrate II obtained in the step (5) to obtain a lithium concentrate product, wherein the scavenging tailings obtained in the step (4) are flotation tailings;
the flotation recovery of lithium in this example was 86.2%.
Example 3: in the embodiment, the mass fraction of the composite regulator is 100%, sodium carbonate accounts for 40%, sodium hexametaphosphate accounts for 45%, and sodium carboxymethylcellulose accounts for 15%; based on the mass fraction of 100% of the composite collector, the composite collector comprises 40% of dodecylamine, 35% of ethanol, 20% of sodium dodecyl benzene sulfonate and 5% of dodecylphenol polyoxyethylene ether;
a method for recovering lepidolite by short-process flotation (see figure 1), which comprises the following specific steps:
(1) The lepidolite ore is crushed and ground until the lepidolite is fully dissociated, water is added for pulp mixing until the mass percentage concentration of ore pulp is 40%, wherein Li in the lepidolite ore 2 The mass percentage content of O is 0.75%;
(2) Sequentially adding a composite regulator and a composite collector into the ore pulp obtained in the step (1) to perform roughing operation to obtain roughing concentrate and roughing tailings; adding 700g of a composite regulator and 600g of a composite collector into ore pulp of roughing operation according to each ton of lepidolite ore;
(3) Sequentially adding a composite regulator and a composite collector into the rough concentrate obtained in the step (2) to carry out concentration operation to obtain lithium concentrate I and concentration tailings; 200g of composite regulator and 100g of composite collector are added into ore pulp of fine selection operation according to each ton of lepidolite ore;
(4) Adding a composite collector into the roughing tailings obtained in the step (2) to perform scavenging operation to obtain scavenging concentrate and scavenging tailings; 120g of composite collector is added into ore pulp of scavenging operation according to each ton of lepidolite ore;
(5) Combining the concentrating tailings obtained in the step (3) and the scavenging concentrate obtained in the step (4) to form mixed middlings, sequentially adding a composite regulator and a composite collector to carry out fine scavenging operation to obtain lithium concentrate II and fine scavenging tailings, wherein the fine scavenging tailings return to size mixing and are combined into scavenging operation; adding 300g of a composite regulator and 60g of a composite collector into ore pulp of fine scavenging operation according to each ton of lepidolite ore;
(6) Combining the lithium concentrate I obtained in the step (3) and the lithium concentrate II obtained in the step (5) to obtain a lithium concentrate product, wherein the scavenging tailings obtained in the step (4) are flotation tailings;
the flotation recovery of lithium in this example was 87.3%.
While the specific embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes may be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (7)
1. A method for recovering lepidolite by short-process flotation is characterized by comprising the following specific steps:
(1) The lepidolite ore is crushed and ground until the lepidolite ore is fully dissociated, and water is added for pulp mixing until the mass percentage concentration of the ore pulp is 32-40%;
(2) Sequentially adding a composite regulator and a composite collector into the ore pulp obtained in the step (1) to perform roughing operation to obtain roughing concentrate and roughing tailings;
(3) Sequentially adding a composite regulator and a composite collector into the rough concentrate obtained in the step (2) to carry out concentration operation to obtain lithium concentrate I and concentration tailings;
(4) Adding a composite collector into the roughing tailings obtained in the step (2) to perform scavenging operation to obtain scavenging concentrate and scavenging tailings;
(5) Combining the concentrating tailings obtained in the step (3) and the scavenging concentrate obtained in the step (4) to form mixed middlings, sequentially adding a composite regulator and a composite collector to perform fine scavenging operation to obtain lithium concentrate II and fine scavenging tailings, wherein the fine scavenging tailings return to size mixing and are combined with the scavenging operation in the step (4);
(6) Combining the lithium concentrate I obtained in the step (3) and the lithium concentrate II obtained in the step (5) to obtain a lithium concentrate product, wherein the scavenging tailings obtained in the step (4) are flotation tailings;
the composite collector is a mixture of dodecyl amine, ethanol, sodium dodecyl benzene sulfonate and dodecyl phenol polyoxyethylene ether.
2. The method for recovering lepidolite from short-process flotation according to claim 1, wherein: based on the mass fraction of the composite regulator being 100%, the sodium carbonate accounts for 30-40%, the sodium hexametaphosphate accounts for 40-50%, and the sodium carboxymethylcellulose accounts for 15-25%; based on the mass fraction of 100% of the composite collector, the composite collector comprises 30-40% of dodecylamine, 35-40% of ethanol, 20-25% of sodium dodecyl benzene sulfonate and 5-10% of dodecylphenol polyoxyethylene ether.
3. The method for recovering lepidolite from short-process flotation according to claim 1, wherein: step (1) Li in lepidolite ore 2 The mass percentage content of O is 0.35-0.75%.
4. A method for short-process flotation recovery of lepidolite according to claim 1 or 3, characterized in that: and (3) adding 500-700 g of a composite regulator and 400-600 g of a composite collector into the ore pulp of the rough concentration operation in the step (2) by counting each ton of lepidolite ore.
5. The method for recovering lepidolite from short-process flotation according to claim 1, wherein: and (3) adding 100-200 g of a composite regulator and 60-100 g of a composite collector into the ore pulp of the fine selection operation in the step (3) according to each ton of lepidolite ore.
6. The method for recovering lepidolite from short-process flotation according to claim 1, wherein: and (3) adding 80-120 g of composite collector into the ore pulp of the scavenging operation in the step (4) according to each ton of lepidolite ore.
7. The method for recovering lepidolite from short-process flotation according to claim 1, wherein: 200-300 g of composite regulator and 40-60 g of composite collector are added into the ore pulp of the fine scavenging operation in the step (5) by counting each ton of lepidolite ore.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310885363.7A CN116727114B (en) | 2023-07-19 | 2023-07-19 | Method for recycling lepidolite through short-process flotation |
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| CN202310885363.7A CN116727114B (en) | 2023-07-19 | 2023-07-19 | Method for recycling lepidolite through short-process flotation |
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| CN116727114B CN116727114B (en) | 2024-07-09 |
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Citations (7)
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