CN109482360B - Mineral processing technology of rare earth, fluorite and barite associated ore - Google Patents
Mineral processing technology of rare earth, fluorite and barite associated ore Download PDFInfo
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- CN109482360B CN109482360B CN201811386342.6A CN201811386342A CN109482360B CN 109482360 B CN109482360 B CN 109482360B CN 201811386342 A CN201811386342 A CN 201811386342A CN 109482360 B CN109482360 B CN 109482360B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/018—Mixtures of inorganic and organic compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/02—Collectors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/06—Depressants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2203/00—Specified materials treated by the flotation agents; specified applications
- B03D2203/02—Ores
Abstract
The invention relates to a mineral processing technology of rare earth, fluorite and barite associated ore, belonging to the field of mineral processing; the invention has the innovation points that the collecting agent I is used during the flotation of the rare earth and the inhibitor III is used during the flotation separation of fluorite and barite; when the mineral processing technology of the rare earth, fluorite and barite associated ore provided by the invention is applied, the flotation separation effect is good, the flow is short, the separation efficiency is high, the comprehensive utilization technology of the rare earth, fluorite and barite associated ore is effectively improved, and the social benefit and the economic benefit are better.
Description
Technical Field
The invention belongs to the field of mineral separation, and particularly relates to a mineral separation process for rare earth, fluorite and barite associated ores.
Background
The rare earth has unique physicochemical properties such as magnetism, light, electricity, heat and the like, and trace rare earth can well improve the properties of metal and non-metal materials, and can be widely applied to the fields of metallurgical machinery, clean energy, national defense and military industry, petrochemical industry, light industry and agriculture, electronic information, high-tech materials and the like. Fluorite is the main raw material for producing hydrofluoric acid, and the hydrofluoric acid is the basic raw material of organic fluorine chemical industry and has a vital position in chemical industry; in the building and construction industry, fluorite is also widely used in the production of glass, ceramics, cement, and the like. Because of its high density, low hardness, white color, chemical inertness and high absorbability to X-ray, gamma-ray and some barium compounds, it is widely used in the industrial fields of petroleum, chemical industry, light industry, metallurgy, medicine, agriculture, atomic energy, military and so on. Therefore, in modern industrial production, there is a great demand for rare earth, fluorite and barite.
The industrial reserve of the rare earth oxide which has been proved in China is 1859 ten thousand, which accounts for about 23.6 percent of the reserve of the rare earth which has been proved in the world, and the rare earth oxide is located at the first place in the world and has complete light, medium and heavy rare earth elements. The reserves, the exploitation amount and the export amount of fluorite and barite in China are the top of the world and are the traditional dominant ore species in China. By 2017, the storage capacity of fluorite ore in China is 4000 ten thousand tons, and the fluorite ore occupies the third place in the world, has more single ore deposit, less storage capacity, high average grade, less associated (co) type ore deposit, large storage capacity, low grade and large sorting difficulty; by 2015, the storage capacity of barite ore in China is 10000 million tons, which is the first in the world, and about 30% of the barite ore is associated with associated ore deposit. In a large part of ore deposits, rare earth is commonly associated with fluorite and barite, so that the comprehensive utilization level of the rare earth ore co-associated resources is improved, the method has an active effect on realizing the comprehensive utilization of resources in China, and has great significance on exerting the advantages of the rare earth, fluorite and barite resources in China.
With the further deepening of 'the promotion of the green development of the mining industry' in China, higher requirements are put forward on the saving and comprehensive utilization levels of mining enterprises, so that in recent years, most of rare earth mining enterprises develop comprehensive utilization research and practice of the co-associated resources of the rare earth ore to different degrees, and particularly develop a great deal of research on co-associated fluorite and barite resources in the rare earth ore. At present, flotation, gravity separation and magnetic separation or combination of multiple processes are mostly adopted in the rare earth beneficiation process, particularly, the research on rare earth collecting agents is more in recent years, part of rare earth mines are successfully changed from traditional heating flotation to normal-temperature flotation, and meanwhile, higher requirements are provided for the adaptability of the collecting agents. The fluorite and barite resources in the rare earth tailings are comprehensively utilized by adopting a mixed flotation-separation process, the traditional process generally adopts a process for inhibiting barite floatin, two or more of water glass, starch, tannin extract, sulfate, ferric chloride and the like are jointly used as barite inhibitor III in a fatty acid flotation system such as oleic acid or sodium oleate, and high-quality fluorite and barite concentrate products can be obtained through multiple flotation separation, but the process is long and complex in flow, multiple in flotation separation operation generally needs more than 6-8 times of concentration operation, more in medicament types, poor in separation efficiency, poor in controllability and unstable in flotation index; researchers also adopt a process for inhibiting fluorite flotation barite to comprehensively recover fluorite and barite, but the grade and the recovery rate of fluorite concentrate are not high in the process.
In conclusion, the traditional comprehensive utilization technology of the associated ore containing rare earth, fluorite and barite has various problems, so that the comprehensive utilization level of the resources is low. The invention has the advantages of short flotation process of rare earth, fluorite and barite, stronger adaptability of the rare earth collecting agent, high separation efficiency of fluorite and barite, higher quality of fluorite and barite concentrate, strong selective inhibition of barite inhibitor III, small using amount and the like, and has better economic benefit and social benefit.
Disclosure of Invention
The invention provides a method for comprehensively utilizing rare earth, fluorite and barite associated ores aiming at the traditional technology for comprehensively utilizing the rare earth, fluorite and barite associated ores, and the method has the advantages of short flotation flow of the rare earth, fluorite and barite, low cost, capability of obtaining qualified rare earth concentrates and high-quality fluorite and barite concentrates, strong selectivity and adaptability of a rare earth collecting agent and a barite inhibitor III, small using amount and the like.
The invention realizes the purpose through the following technical scheme:
a mineral processing technology of rare earth, fluorite and barite associated ore comprises the following steps:
(1) sequentially crushing, grinding and mixing raw ores of rare earth, fluorite and barite associated ores, and then performing rare earth flotation to obtain rare earth concentrate and rare earth flotation tailings; the rare earth flotation reagent comprises a collector I, and the collector I is prepared from C5-7 hydroxamic acid and o-hydroxynaphthalene methyl hydroxamic acid according to the mass ratio of 1: 4.
(2) Performing fluorite and barite mixed flotation on the rare earth flotation tailings obtained in the step (1) to obtain fluorite and barite mixed concentrate;
(3) performing flotation separation on fluorite and barite in the fluorite and barite bulk concentrate obtained in the step (2) by adopting a fluorite flotation process for inhibiting and barite, and respectively obtaining fluorite concentrate and barite concentrate by inhibiting barite; the flotation separation agent comprises an inhibitor III, and the inhibitor III is prepared from N, N-dihydroxyethyl glycine, sodium sulfate and sodium citrate according to the mass ratio of 1:3: 1.
According to the invention, through the selection of the collecting agent in the step (1) and the selection of the inhibitor in the step (3), the collecting agent has excellent collecting and inhibiting performances (selectivity and adaptability), and is beneficial to the subsequent ore dressing, so that the use amount of the agent in the whole ore dressing process is greatly reduced, and the process flow of the ore dressing process is shortened.
As a further optimization scheme of the invention, the flotation of the rare earth in the step (1), the mixed flotation in the step (2) and the flotation separation in the step (3) adopt a rough-scanning and three-fine flotation process.
As a further optimization scheme of the invention, in the step (1), the granularity of the crushed raw ore is-3 mm, and the mass percentage concentration of the pulp after size mixing is 20-35%.
As a further optimization scheme of the invention, in the step (1), the total dosage of the collector I is 1200-2200g/t raw ore, and in the step (3), the total dosage of the inhibitor III is 500-1000g/t ore feeding.
In a further optimized scheme of the invention, in the step (1), the rare earth flotation reagent further comprises a regulator, an inhibitor and a foaming agent, wherein the regulator comprises sodium hydroxide, the inhibitor comprises modified water glass, the foaming agent comprises 2# oil, preferably, the sodium hydroxide is industrial grade, the modified water glass is prepared by water glass with a medium modulus and sodium tripolyphosphate according to a mass ratio of 99:1, and more preferably, the medium modulus is 2.4-2.8.
As a further optimization scheme of the invention, in the step (1), the total dosage of the regulator I is 0-500 g/t-raw ore, the total dosage of the inhibitor I is 2000-2500 g/t-raw ore, and the total dosage of the foaming agent I is 50-80 g/t-raw ore.
In a further optimized scheme of the invention, in the step (2), the mixed flotation reagent comprises an inhibitor II and a collector II, the inhibitor II comprises sodium carbonate and modified water glass, the collector II comprises oleic acid, and the inhibitor II further comprises at least one of sodium carboxymethyl cellulose and sodium lignin sulfonate.
As a further optimization scheme of the invention, the modified water glass is prepared by compounding medium-modulus water glass and sodium tripolyphosphate according to a mass ratio of 99:1, the sodium carbonate, the sodium carboxymethyl cellulose, the sodium lignosulfonate and the oleic acid are all industrial grade, the oleic acid is prepared by partially saponifying sodium hydroxide, and the partially saponifying is to stir the oleic acid and the sodium hydroxide according to a molar ratio of 1:0.7-0.8 at a temperature of 50 ℃ for 5 hours.
As a further optimization scheme of the invention, in the step (2), in the inhibitor II, the total amount of sodium carbonate is 800-1600g/t ore feeding, the total amount of modified water glass is 2400-3600g/t ore feeding, the total amount of carboxymethyl cellulose is 50-80g/t ore feeding, the total amount of sodium lignosulfonate is 50-80g/t ore feeding, and the total amount of the collector II is 500-700g/t ore feeding.
As a further optimization scheme of the invention, in the step (1), the pH value of the rare earth flotation is 8-9.5, in the step (2), the pH value of the mixed flotation is 8.5-10, and in the step (3), the pH value of the flotation separation is 5-9.5.
The ore body of the rare earth, fluorite and barite associated ore is rare earth ore in Liangshan county of Sichuan, the main rare earth mineral is bastnaesite, fluorite and barite are associated, and other valuable minerals are trace and have no recycling value; the main gangue minerals include quartz, feldspar, dolomite, etc., and small amount of mica, Nadraniate, clay minerals, etc.
The invention mechanism of the invention is as follows:
according to the invention, the rare earth raw ore is subjected to the progressive flotation at normal temperature, the rare earth collecting agent provided by the invention has good adaptability, the effective recovery of rare earth minerals is realized at normal temperature, and qualified rare earth concentrate is obtained; the rare earth tailings are subjected to mixed flotation, and various inhibitors are adopted to obtain fluorite and barite mixed concentrate with high mineral purity, so that favorable conditions are created for subsequent flotation separation operation, and the collecting capacity of the collecting agent is greatly enhanced by the partially saponified collecting agent; meanwhile, the fluorite and barite flotation separation can obtain good flotation indexes only by once roughing, once scavenging and three times of concentration, the barite inhibitor provided by the invention has good selectivity and adaptability, can realize effective inhibition of barite within the range of pH value of 5-9.5, does not need to be used in combination with other agents for inhibiting barite, does not need to add collecting agents additionally in concentration operation, simplifies the use of flotation agents, and ensures better process reliability.
The invention has the beneficial effects that:
1. the RE O and CaF of the rare earth concentrate, the fluorite concentrate and the barite concentrate obtained by the mineral processing technology provided by the invention2And BaSO4The grade and the recovery rate of the method are improved to different degrees compared with the prior art, qualified rare earth concentrate, fluorite concentrate and barite concentrate products with higher quality are obtained, and the method has the technical effects of low usage of flotation reagents and short process flow (one coarse step and three steps);
2. when the fluorite and the barite are subjected to flotation separation in the rare earth tailings, the flotation separation effect is good, the separation efficiency is high, and the dosage of the medicament is small;
3. the method effectively improves the comprehensive utilization technology of the associated ore containing the rare earth, the fluorite and the barite, and has better social benefit and economic benefit.
Detailed Description
The present invention is described in detail below by way of examples, and it should be noted that the following examples are only for illustrating the present invention and should not be construed as limiting the scope of the present invention. Test example 1
In the embodiment, a rare earth ore of Sichuan crown Ning is selected as a raw material, the REO grade of the rare earth ore is 2.17 percent, and CaF2Grade 13.94%, BaSO4The grade is 12.60 percent, the grinding fineness is 75 percent of the content of minus 0.074mm, and the flotation concentration is 30 percent.
Comparative example 1
The original process is adopted:
the raw materials are treated by a laboratory XFD type small flotation machine through a rough scanning and three fine processes, and a rare earth flotation test is carried out under the condition of normal temperature, and the medicament system is as follows: 500g/t of roughing sodium hydroxide, 1000g/t of modified water glass, 800g/t of rare earth collecting agent and 40g/t of 2# oil; the dosage of scavenging modified water glass is 300g/t, the dosage of collecting agent is 400g/t, and the dosage of 2# oil is 20 g/t; 200g/t of refined modified water glass, and 150g/t of collecting agent; 100g/t of refined second modified water glass and 80g/t of collecting agent; and (5) refining three blanks.
The rare earth flotation tailings are subjected to a fluorite and barite mixed flotation test through a rough-sweeping-three-fine flow process at normal temperature, and the reagent system is as follows: the method comprises the following steps of roughly selecting 1500g/t of modified water glass, 1000g/t of sodium carbonate, 50g/t of carboxymethyl cellulose and 300g/t of collecting agent; scavenging modified water glass 500g/t and collecting agent 200 g/t; 300g/t of fine modified water glass and 20g/t of carboxymethyl cellulose are fed; feeding fine second modified water glass at 100 g/t; and (5) refining three blanks.
Fluorite, barite bulk concentrate adopt laboratory XFD type small-size flotation device through a thick sweep seven smart processes, carry out fluorite, barite flotation separation test under the normal atmospheric temperature condition, its medicament system is: the dosage of the roughing starch is 500g/t, ore feeding and NaSO4The using amount is 500g/t, and the collecting agent is 100 g/t; the consumption of scavenging starch is 100g/t ore feeding, NaSO4The using amount is 100g/t, and the collecting agent is 50 g/t; refined starch dosage of 200g/t ore feeding, NaSO4The using amount is 200g/t, and ore is fed; the dosage of refined distarch is 150g/t, ore feeding, NaSO4The using amount is 150g/t, and the collecting agent is 50 g/t; the dosage of refined starch is 100g/t, NaSO4The dosage is 100 g/t.ore feeding; the dosage of the refined tetrasodium starch is 50g/t, NaSO4The using amount is 50g/t, and the collecting agent is 50 g/t; the dosage of the refined pentastarch is 50g/t, NaSO4The dosage is 50g/t, and ore feeding is carried out; the dosage of the refined hexastarch is 50g/t, ore feeding and NaSO4The using amount is 50g/t, and the collecting agent is 50 g/t; selecting heptaNaSO4The dosage is 50 g/t.
Example 1
The process of the invention comprises the following steps:
the raw materials are treated by a laboratory XFD type small flotation machine through a rough scanning and three fine processes, and a rare earth flotation test is carried out under the condition of normal temperature, and the medicament system is as follows: 500g/t of roughing sodium hydroxide, 1000g/t of modified water glass, 800g/t of rare earth collecting agent and 40g/t of 2# oil; the dosage of scavenging modified water glass is 300g/t, the dosage of collecting agent I is 400g/t, and the dosage of 2# oil is 20 g/t; 200g/t of fine modified water glass, and 150g/t of collecting agent I; 100g/t of refined second modified water glass and 80g/t of collecting agent I; and (5) refining three blanks.
The rare earth flotation tailings are subjected to a fluorite and barite mixed flotation test through a rough-sweeping-three-fine flow process at normal temperature, and the reagent system is as follows: the method comprises the following steps of roughly selecting 1500g/t of modified water glass, 1000g/t of sodium carbonate, 50g/t of carboxymethyl cellulose and 300g/t of collecting agent II; scavenging modified water glass 500g/t and collecting agent II 200 g/t; 300g/t of fine modified water glass and 20g/t of carboxymethyl cellulose are fed; feeding fine second modified water glass at 100 g/t; and (5) refining three blanks.
Fluorite, barite bulk concentrate adopt laboratory XFD type small-size flotation device through a thick one sweep three smart processes, carry out fluorite, barite flotation separation test under the normal atmospheric temperature condition, its medicament system is: the dosage of the roughing barite inhibitor III is 300g/t, and ore feeding is carried out; the dosage of scavenging barite inhibitor III is 100g/t, and the ore feeding is 50 g/t; the dosage of the refined barite inhibitor III is 100 g/t.ore feeding, and the dosage of the No. 2 oil is 20 g/t.ore feeding; the dosage of the refined barite inhibitor III is 50 g/t.ore feeding, and the dosage of the No. 2 oil is 10 g/t.ore feeding; and (5) refining three blanks. The test data are shown in Table 1.
Table 1 test example 1 test data
Test example 2
In the embodiment, some rare earth ore of Dechang in Sichuan is used as raw material, the rare earth REO is 3.24 grade%, CaF2Grade 9.22%, BaSO4The grade is 13.96 percent, the grinding fineness is 80 percent with the content of minus 0.074mm, and the flotation concentration is 30 percent.
Comparative example 2
The original process is adopted:
the raw materials are treated by a laboratory XFD type small flotation machine through a rough scanning and three fine processes, and a rare earth flotation test is carried out under the condition of normal temperature, and the medicament system is as follows: 200g/t of roughing sodium hydroxide, 1500g/t of modified water glass, 1200g/t of rare earth collecting agent and 50g/t of 2# oil; 500g/t of scavenging modified water glass, 600g/t of collecting agent and 20g/t of 2# oil; 100g/t of fine modified water glass and 200g/t of collecting agent; 50g/t of refined second modified water glass, and 100g/t of collecting agent; and (5) refining three blanks.
The rare earth flotation tailings are subjected to fluorite and barite mixed flotation test, and the reagent system is as follows: the method comprises the following steps of (1) roughly selecting 2000g/t of modified water glass, 1500g/t of sodium carbonate, 50g/t of sodium lignosulfonate and 400g/t of collecting agent; scavenging 1000g/t of modified water glass and 150g/t of collecting agent; 400g/t of refined modified water glass and 20g/t of sodium lignosulfonate for ore feeding; feeding fine second modified water glass at 150 g/t; and (5) refining three blanks.
Fluorite, barite bulk concentrate adopt laboratory XFD type small-size flotation device through a thick sweep eight smart processes, carry out fluorite, barite flotation separation test under the normal atmospheric temperature condition, its medicament system is: the dosage of the roughing starch is 400g/t, ore feeding and NaSO4The using amount is 400g/t, and the collecting agent is 150 g/t; the consumption of scavenging starch is 100g/t ore feeding, NaSO4The using amount is 100g/t, and the collecting agent is 70 g/t; refined starch dosage of 150g/t ore feeding, NaSO4The dosage is 150g/t, and ore is fed; the dosage of refined distarch is 100g/t, NaSO4The using amount is 100g/t, and the collecting agent is 80 g/t; the dosage of refined starch is 80g/t, NaSO4The dosage is 80g/t, and ore feeding is carried out; the dosage of the refined tetrasodium starch is 50g/t, NaSO4The using amount is 50g/t, and the collecting agent is 50 g/t; the dosage of the refined pentastarch is 50g/t, NaSO4The dosage is 50g/t, and ore feeding is carried out; the dosage of the refined hexastarch is 40g/t, ore feeding and NaSO4The using amount is 40g/t, and the collecting agent is 50 g/t; selecting seven starch with 30g/t ore feeding, NaSO4The using amount is 30g/t, and ore feeding is carried out; refined NaSO4The dosage is 30 g/t.
Example 2
The process of the invention comprises the following steps:
the raw materials are treated by a laboratory XFD type small flotation machine through a rough scanning and three fine processes, and a rare earth flotation test is carried out under the condition of normal temperature, and the medicament system is as follows: 200g/t of roughing sodium hydroxide, 1500g/t of modified water glass, 1200g/t of collecting agent I and 50g/t of 2# oil; 500g/t of scavenging modified water glass, 600g/t of collecting agent I and 20g/t of 2# oil; 100g/t of fine modified water glass and 200g/t of collecting agent I; 50g/t of refined second modified water glass and 100g/t of collecting agent I; and (5) refining three blanks.
The rare earth flotation tailings are subjected to fluorite and barite mixed flotation test, and the reagent system is as follows: the method comprises the following steps of (1) roughly selecting 2000g/t of modified water glass, 1500g/t of sodium carbonate, 50g/t of sodium lignosulfonate and 400g/t of collecting agent II; scavenging 1000g/t of modified water glass and 150g/t of collecting agent II; 400g/t of refined modified water glass and 20g/t of sodium lignosulfonate for ore feeding; feeding fine second modified water glass at 150 g/t; and (5) refining three blanks.
Fluorite, barite bulk concentrate adopt laboratory XFD type small-size flotation device through a thick one sweep three smart processes, carry out fluorite, barite flotation separation test under the normal atmospheric temperature condition, its medicament system is: the dosage of the roughly selected barite inhibitor III is 400g/t, and ore feeding is carried out; the usage amount of scavenging barite inhibitor III is 200g/t, and the usage amount of collecting agent is 80g/t, and the ore is fed; the dosage of the refined barite inhibitor III is 200 g/t.ore feeding, and the dosage of the No. 2 oil is 10 g/t.ore feeding; the dosage of the refined barite inhibitor III is 100 g/t.ore feeding, and the dosage of the No. 2 oil is 10 g/t.ore feeding; and (5) refining three blanks. The test data are shown in Table 2.
Table 2 test example 2 test data
According to the test data, the flotation separation process is short, the flotation separation efficiency is high, the cost is low, the rare earth collecting agent has good adaptability, and the effective recovery of rare earth minerals can be realized under the normal temperature condition; compared with the prior test data, the barite inhibitor III has the advantages of low consumption, good selectivity and adaptability, and capability of effectively separating fluorite and barite in rare earth tailings under the condition of a shorter flotation process, so that high-quality fluorite and barite concentrate products are obtained.
Claims (12)
1. The mineral processing technology of the rare earth, fluorite and barite associated ore is characterized by comprising the following steps:
(1) sequentially crushing, grinding and mixing raw ores of rare earth, fluorite and barite associated ores, and then performing rare earth flotation to obtain rare earth concentrate and rare earth flotation tailings; the reagent for the rare earth flotation comprises a collecting agent I, wherein the collecting agent I is prepared from C5-7 hydroxamic acid and o-hydroxynaphthalene methyl hydroxamic acid according to the mass ratio of 1: 4;
(2) performing fluorite and barite mixed flotation on the rare earth flotation tailings obtained in the step (1) to obtain fluorite and barite mixed concentrate;
(3) performing flotation separation on fluorite and barite in the fluorite and barite bulk concentrate obtained in the step (2) by adopting a barite inhibition flotation fluorite process, and respectively obtaining fluorite concentrate and barite concentrate by inhibiting the barite; the reagent for flotation separation is an inhibitor III, and the inhibitor III is prepared from N, N-dihydroxyethyl glycine, sodium sulfate and sodium citrate according to the mass ratio of 1:3: 1; the pH value of the flotation separation is 5-9.5.
2. The mineral processing process of the associated ore of rare earth, fluorite and barite according to claim 1, characterized in that the flotation of rare earth in step (1), the mixed flotation in step (2) and the flotation separation in step (3) are performed by a rough-scanning-three-fine flotation process.
3. The mineral processing technology of rare earth, fluorite and barite associated ore according to claim 1, characterized in that in step (1), the particle size of the crushed raw ore is-3 mm, and the mass percentage concentration of the pulp after size mixing is 20% -35%.
4. The mineral processing technology of the rare earth, fluorite and barite associated ore according to claim 1, characterized in that, in the step (1), the total amount of the collector I is 1200-2200 g/t-raw ore; in the step (3), the total dosage of the inhibitor III is 500-1000 g/t.
5. The process for beneficiation of rare earth, fluorite and barite associated ores according to claim 1, wherein in the step (1), the reagent for rare earth flotation further comprises a modifier I, a depressant I and a foaming agent I, wherein the modifier I comprises sodium hydroxide, the depressant I comprises modified water glass, and the foaming agent I comprises # 2 oil.
6. The mineral processing technology of rare earth, fluorite and barite associated ore according to claim 5, characterized in that the sodium hydroxide is of industrial grade, and the modified water glass is prepared from medium modulus water glass and sodium tripolyphosphate according to a mass ratio of 99: 1.
7. The beneficiation process of rare earth, fluorite and barite associated ore according to claim 6, wherein the medium modulus is 2.4-2.8.
8. The mineral processing technology of associated ore of rare earth, fluorite and barite as claimed in claim 5, wherein in step (1), the total amount of said modifier I is 0-500 g/t.raw ore, the total amount of said inhibitor I is 2000-2500 g/t.raw ore, and the total amount of said foaming agent I is 50-80 g/t.raw ore.
9. The process for beneficiation of rare earth, fluorite and barite associated ore according to claim 1, wherein in the step (2), the mixed flotation reagent comprises an inhibitor II and a collector II, the inhibitor II comprises sodium carbonate and modified water glass, the collector II comprises oleic acid, and the inhibitor II further comprises at least one of sodium carboxymethyl cellulose and sodium lignin sulfonate.
10. The mineral processing technology of rare earth, fluorite and barite associated ores according to claim 9, characterized in that in the step (2), the modified water glass is formed by compounding medium-modulus water glass and sodium tripolyphosphate according to a mass ratio of 99:1, the sodium carbonate, sodium carboxymethyl cellulose, sodium lignin sulfonate and oleic acid are all industrial grade, the oleic acid is prepared by partially saponifying sodium hydroxide, and the partially saponifying is to stir oleic acid and sodium hydroxide according to a molar ratio of 1:0.7-0.8 at a temperature of 50 ℃ for 5 hours.
11. The mineral processing technology for rare earth, fluorite and barite associated ores as claimed in claim 9 or 10, wherein in the step (2), the total amount of sodium carbonate is 800-1600 g/t-mineral feeding, the total amount of modified water glass is 2400-3600 g/t-mineral feeding, the total amount of carboxymethyl cellulose is 50-80 g/t-mineral feeding, the total amount of sodium lignosulfonate is 50-80 g/t-mineral feeding, and the total amount of the collector II is 500-700 g/t-mineral feeding.
12. The mineral processing process of the rare earth, fluorite and barite associated ore according to any one of claims 1 to 10, characterized in that in the step (1), the pH value of the rare earth flotation is 8 to 9.5; in the step (2), the pH value of the mixed flotation is 8.5-10.
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| CN201811386342.6A CN109482360B (en) | 2018-11-20 | 2018-11-20 | Mineral processing technology of rare earth, fluorite and barite associated ore |
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| CN109482360B true CN109482360B (en) | 2021-02-02 |
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| US20210379604A1 (en) * | 2020-06-08 | 2021-12-09 | Arizona Board Of Regents On Behalf Of The University Of Arizona | Novel method for the flotation of bastnaesite ore |
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| CN101972706B (en) * | 2010-09-08 | 2012-12-19 | 广西大学 | Inhibiting agent for separating copper-molybdenum mineral and preparation method and application thereof |
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