CN111632745A - Mineral processing technology for cracked rock type copper oxide tin ore - Google Patents

Mineral processing technology for cracked rock type copper oxide tin ore Download PDF

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Publication number
CN111632745A
CN111632745A CN202010348226.6A CN202010348226A CN111632745A CN 111632745 A CN111632745 A CN 111632745A CN 202010348226 A CN202010348226 A CN 202010348226A CN 111632745 A CN111632745 A CN 111632745A
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China
Prior art keywords
tin
ore
concentrate
copper oxide
nielsen
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CN202010348226.6A
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Chinese (zh)
Inventor
柏亚林
张国豪
杨俊龙
彭贵熊
刘坤
李健民
何海涛
高承岗
郭艳华
唐晓琪
苗琳璐
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Northwest Research Institute of Mining and Metallurgy
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Northwest Research Institute of Mining and Metallurgy
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Priority to CN202010348226.6A priority Critical patent/CN111632745A/en
Publication of CN111632745A publication Critical patent/CN111632745A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
    • 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
    • B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
    • B03B5/02—Washing granular, powdered or lumpy materials; Wet separating using shaken, pulsated or stirred beds as the principal means of separation
    • B03B5/04—Washing granular, powdered or lumpy materials; Wet separating using shaken, pulsated or stirred beds as the principal means of separation on shaking tables
    • 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
    • B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
    • B03B5/28—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation
    • B03B5/30—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation using heavy liquids or suspensions
    • B03B5/32—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation using heavy liquids or suspensions using centrifugal force
    • 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
    • B03D1/018—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
    • 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
    • B03D2201/00—Specified effects produced by the flotation agents
    • B03D2201/06—Depressants
    • 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
    • B03D2203/04—Non-sulfide ores

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  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

The invention relates to a mineral processing technology of a cracked rock type copper oxide tin ore, which directly performs flotation to recover copper oxide, performs Nielsen gravity separation to recover fine tin oxide, and performs table concentrator to recover coarse tin oxide. The invention adopts direct flotation of copper oxide, adopts copper oxide collecting agent di-secondary hypophosphorous acid, and recovers the copper oxide without adding an activating agent, thereby obtaining more ideal beneficiation indexes. The Nielsen has a good recovery effect on the fine-grained cassiterite, and in the Nielsen reselection process, the medicament adsorbed on the ore grains is resolved and separated under the strong centrifugal rotation and mutual friction action, so that the subsequent operation is facilitated. And (4) selecting coarse tin oxide particles by a shaking table to obtain tin concentrate with higher enrichment ratio. The process adopts a flotation-reselection combined process, and realizes sectional recovery according to the characteristics of ores, so that the process has the advantages of high recovery and enrichment ratio, good recovery effect, strong applicability and convenience for industrial popularization and application.

Description

Mineral processing technology for cracked rock type copper oxide tin ore
Technical Field
The invention belongs to the technical field of mineral processing, and particularly relates to a mineral separation process of a cracked rock type copper tin oxide ore.
Background
A large amount of lead-silver slag is generated in China each year due to zinc hydrometallurgy, and the slag contains a plurality of metal elements such as copper, lead and zinc and rare metals such as silver, gold, cadmium and indium with considerable value. Although the lead-silver slag has higher economic value, the lead-silver slag has the characteristics of high acidity, large water content, high soluble substance content, fine granularity and the like, and is not well utilized all the time. At present, the method for recycling the lead and silver slag at home and abroad mainly comprises the following steps: flotation, pyrogenic process, wet process, combined pyrogenic process-wet process, and the like. The methods have the disadvantages of low recovery rate, high production cost, weak flow applicability, serious environmental pollution and the like.
Disclosure of Invention
The invention aims to provide a mineral processing technology of a cracked rock type copper oxide tin ore, which solves the limitation of the prior art and recovers copper and tin.
In order to achieve the purpose, the ore dressing process of the fractured rock type copper tin oxide ore is characterized by comprising the following steps of:
step 1: grinding the raw ore until the grinding concentration is 50-60% and the grinding fineness is less than 0.074mm, wherein the content of the grinding is 90-95%; adding a gangue inhibitor during ore grinding, wherein the adding amount is 800-1000 g/t;
step 2: directly floating copper oxide, adjusting the ore pulp obtained in the step 1 to the mass percentage concentration of 30-35%, and adding 200-300 g/t, 2g/t of di-sec-based hypophosphorous acid#Oil is 20-40 g/t, and copper concentrate and flotation tailings are obtained through three times of fine concentration and three times of scavenging;
and step 3: carrying out Nielsen flotation on fine tin oxide, sorting the flotation tailings obtained in the step 2 under the conditions of a value of 60-90G and a water flushing amount of 2.4-3.2L/min to obtain coarse tin concentrate and Nielsen tailings, and elutriating the coarse tin concentrate for 3-5 times to obtain fine tin concentrate;
and 4, step 4: selecting coarse-grained and fine tin oxide by using a shaking table, and sorting the Nielsen tailings obtained in the step 3 under the conditions that the stroke is 9-10 mm, the washing frequency is 380-460 times/min, the ore feeding concentration is 20-30%, and the washing water is 2-3L/min, so as to obtain tin concentrate I, middlings and tailings of the shaking table; and (4) carrying out table concentration again on the middlings to obtain table tin concentrate II, and combining the table tin concentrate I and the table tin concentrate II into final table tin concentrate.
In the technical scheme of the ore dressing process of the fractured rock type copper tin oxide ore, the further preferable technical scheme is characterized in that:
1. in the step 1, the gangue inhibitor is water glass, and the addition amount is 900 g/t;
2. in the step 2, the slurry is adjusted to the mass percentage concentration of 33%;
3. adding 250g/t, 2 of di-sec-based hypophosphorous acid into the step 2#Oil 30 g/t.
Compared with the prior art, the invention has the beneficial effects that: (1) copper oxide is directly floated, copper oxide is recovered by adopting copper oxide collecting agent di-sec-based hypophosphorous acid without adding an activating agent, and a relatively ideal mineral dressing index can be obtained. (2) The nielsen is selected from fine-grained tin oxide. The Nielsen has a good recovery effect on the fine-grained cassiterite, and in the Nielsen reselection process, the medicament adsorbed on the ore grains is resolved and separated under the strong centrifugal rotation and mutual friction action, so that the subsequent operation is facilitated. (3) And (4) selecting coarse tin oxide particles by a shaking table. The ore is in fan-shaped zone division on the bed surface, which is convenient for observation and adjustment, and the obtained tin concentrate has higher enrichment ratio. The process adopts a flotation-reselection combined process, and realizes sectional recovery according to the characteristics of ores, so that the process has the advantages of high recovery and enrichment ratio, good recovery effect, strong applicability and convenience for industrial popularization and application.
Detailed Description
The following will clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Embodiment 1, a process for dressing a fractured rock type copper tin oxide ore, comprising the steps of: step 1: grinding the raw ore until the grinding concentration is 50-60% and the grinding fineness is less than 0.074mm, wherein the content of the grinding is 90-95%; adding a gangue inhibitor during ore grinding, wherein the adding amount is 800-1000 g/t; step 2: directly floating copper oxide, adjusting the ore pulp obtained in the step 1 to the mass percentage concentration of 30-35%, and adding 200-300 g/t, 2g/t of di-sec-based hypophosphorous acid#Oil is 20-40 g/t, and copper concentrate and flotation tailings are obtained through three times of fine concentration and three times of scavenging; and step 3: carrying out Nielsen flotation on fine tin oxide, sorting the flotation tailings obtained in the step 2 under the conditions of a value of 60-90G and a water flushing amount of 2.4-3.2L/min to obtain coarse tin concentrate and Nielsen tailings, and elutriating the coarse tin concentrate for 3-5 times to obtain fine tin concentrate; and 4, step 4: selecting coarse-grained and fine tin oxide by using a shaking table, and sorting the Nielsen tailings obtained in the step 3 under the conditions that the stroke is 9-10 mm, the washing frequency is 380-460 times/min, the ore feeding concentration is 20-30%, and the washing water is 2-3L/min, so as to obtain tin concentrate I, middlings and tailings of the shaking table; the middlings pass through the secondary shaking table for refiningAnd (4) selecting to obtain table tin concentrate II, and combining the table tin concentrate I and the table tin concentrate II to obtain the final table tin concentrate. 2 is described#Oil is used as a foaming agent, and di-sec-based hypophosphorous acid is used as a collecting agent during the direct flotation of copper oxide; the tin oxide recovery method comprises the steps of recovering fine tin oxide by adopting Nielsen, recovering coarse tin oxide by adopting a shaking table, and performing shaking table on middling in the shaking table.
Example 2 in the process for beneficiation of fractured rock type cuprum tin oxide ore according to example 1, the gangue depressant in step 1 is water glass, and the addition amount is 900 g/t.
Example 3 in the process for beneficiation of the disintegrated rock type copper oxide tin ore according to example 1 or 2, the slurry in the step 2 was adjusted to a concentration of 33% by mass.
Example 4 beneficiation process of disintegrated rock type copper oxide tin ore according to example 1, 2 or 3, wherein in the step 2, 250g/t, 2g/t of di-secondary hypophosphorous acid is added#Oil 30 g/t.
Example 5, a copper-tin ore crude ore of Guangxi contains 1.69% copper and 1.12% tin. The ore dressing process comprises the following steps of 1, grinding raw ore to enable the grinding concentration to be 55.6%, adding 900g/t of water glass, and enabling the content of the grinding fineness to be 0.074mm to be 91.54%. 2. Direct flotation of copper oxide: the mass percentage concentration of the flotation ore pulp is 32.5 percent, the di-sec-based hypophosphorous acid is added, the dosage is 250g/t, and the foaming agent is 2#And oil with the dosage of 30g/t is subjected to three times of fine selection and three times of scavenging to obtain copper concentrate and flotation tailings. The copper grade in the copper concentrate is 20.17%, and the copper recovery rate is 85.32%. 3. Fine-grained tin oxide with Nielsen: and (3) obtaining flotation tailings in the step (2), and sorting under the conditions of a 90G value and a flushing water volume of 2.8L/min to obtain tin rough concentrate and Nielsen tailings. And elutriating the tin rough concentrate for 4 times to obtain fine tin concentrate. The fine tin concentrate grade was 34.45%, and the tin recovery was 42.25%. 4. And (3) selecting coarse-grained and fine tin oxide by a shaking table: and (3) sorting the Nielsen tailings obtained in the step (3) in a shaking table with a stroke of 9-10 mm and a washing frequency of 420 times/min under the conditions that the ore feeding concentration is 25% and the washing water is 3L/min to obtain tin concentrate I, middlings and tailings of the shaking table. Concentrating the middlings by a table again to obtain table tin concentrate II, and concentrating the table tin concentrate I and table tinAnd merging the concentrate II into the final table tin concentrate. The grade of the tin concentrate obtained by the table concentrator is 28.98%, and the recovery rate is 33.76%.
Example 6, a raw copper-tin ore from Yunnan contains 1.23% copper and 1.87% tin. The ore dressing process comprises the following steps of 1, grinding raw ore to enable the grinding concentration to be 55.8%, adding 950g/t of water glass, and enabling the content of the grinding fineness to be 0.074mm to be 93.5%. 2. Direct flotation of copper oxide: the mass percentage concentration of the flotation ore pulp is 33 percent, di-sec-based hypophosphorous acid is added, the dosage is 220g/t, and the foaming agent is 2#And oil with the dosage of 28g/t is subjected to three times of fine selection and three times of scavenging to obtain copper concentrate and flotation tailings. The copper grade in the copper concentrate is 19.14 percent, and the copper recovery rate is 82.56 percent. 3. Fine-grained tin oxide with Nielsen: and (3) obtaining flotation tailings in the step (2), and sorting under the conditions of a 90G value and a flushing water volume of 2.8L/min to obtain tin rough concentrate and Nielsen tailings. And elutriating the tin rough concentrate for 4 times to obtain fine tin concentrate. The grade of the fine tin concentrate is 35.87%, and the tin recovery rate is 48.98%. 4. And (3) selecting coarse-grained and fine tin oxide by a shaking table: and (3) sorting the Nielsen tailings obtained in the step (3) in a shaking table with a stroke of 9-10 mm and a washing frequency of 400 times/min under the conditions that the ore feeding concentration is 26% and the washing water is 2.5L/min to obtain tin concentrate I, middlings and tailings of the shaking table. And (4) carrying out table concentration again on the middlings to obtain table tin concentrate II, and combining the table tin concentrate I and the table tin concentrate II into final table tin concentrate. The grade of the tin concentrate obtained by the shaking table is 30.45 percent, and the recovery rate is 31.45 percent.
Example 7, a copper-tin ore raw ore abroad contains 0.99% of copper and 0.94% of tin. The ore dressing process comprises the following steps of 1, grinding raw ore, wherein the grinding concentration is 57%, water glass is added for 950g/t, and the content of the grinding fineness of 0.074mm accounts for 94.5%. 2. Direct flotation of copper oxide: the mass percentage concentration of the flotation ore pulp is 34 percent, the di-sec-based hypophosphorous acid is added, the dosage is 200g/t, and the foaming agent is 2#And oil with the dosage of 22g/t is subjected to three times of fine selection and three times of scavenging to obtain copper concentrate and flotation tailings. The copper grade in the copper concentrate is 18.23 percent, and the copper recovery rate is 80.23 percent. 3. Fine-grained tin oxide with Nielsen: and (3) obtaining flotation tailings in the step (2), and sorting under the conditions of a 60G value and a flushing water volume of 2.8L/min to obtain tin rough concentrate and Nielsen tailings. Tin rough concentrateAnd elutriating for 5 times to obtain fine tin concentrate. The grade of the fine tin concentrate is 19.87%, and the tin recovery rate is 48.15%. 4, selecting coarse-grained and fine-grained tin oxide by a shaking table: and (3) sorting the Nielsen tailings obtained in the step (3) in a shaking table with a stroke of 9-10 mm and a washing frequency of 440 times/min under the conditions that the ore feeding concentration is 24% and the washing water is 2.7L/min to obtain tin concentrate I, middlings and tailings of the shaking table. And (4) carrying out table concentration again on the middlings to obtain table tin concentrate II, and combining the table tin concentrate I and the table tin concentrate II into final table tin concentrate. The grade of the tin concentrate obtained by a shaking table is 21.45 percent, and the recovery rate is 24.31 percent.
The above description is only for the preferred embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution of the present invention and the inventive concept thereof within the scope of the present invention.

Claims (4)

1. The ore dressing process of the fractured rock type copper oxide tin ore is characterized by comprising the following steps of:
step 1: grinding the raw ore until the grinding concentration is 50-60% and the grinding fineness is less than 0.074mm, wherein the content of the grinding is 90-95%; adding a gangue inhibitor during ore grinding, wherein the adding amount is 800-1000 g/t;
step 2: directly floating copper oxide, adjusting the ore pulp obtained in the step 1 to the mass percentage concentration of 30-35%, and adding 200-300 g/t, 2g/t of di-sec-based hypophosphorous acid#Oil is 20-40 g/t, and copper concentrate and flotation tailings are obtained through three times of fine concentration and three times of scavenging;
and step 3: carrying out Nielsen flotation on fine tin oxide, sorting the flotation tailings obtained in the step 2 under the conditions of a value of 60-90G and a water flushing amount of 2.4-3.2L/min to obtain coarse tin concentrate and Nielsen tailings, and elutriating the coarse tin concentrate for 3-5 times to obtain fine tin concentrate;
and 4, step 4: selecting coarse-grained and fine tin oxide by using a shaking table, and sorting the Nielsen tailings obtained in the step 3 under the conditions that the stroke is 9-10 mm, the washing frequency is 380-460 times/min, the ore feeding concentration is 20-30%, and the washing water is 2-3L/min, so as to obtain tin concentrate I, middlings and tailings of the shaking table; and (4) carrying out table concentration again on the middlings to obtain table tin concentrate II, and combining the table tin concentrate I and the table tin concentrate II into final table tin concentrate.
2. The ore dressing process of the disintegrated rock type copper oxide tin ore according to claim 1, characterized in that: in the step 1, the gangue inhibitor is water glass, and the adding amount is 900 g/t.
3. The ore dressing process of the disintegrated rock type copper oxide tin ore according to claim 1, characterized in that: and (3) adjusting the slurry in the step 2 to a mass percentage concentration of 33%.
4. The ore dressing process of the disintegrated rock type copper oxide tin ore according to claim 1, characterized in that: adding 250g/t, 2 of di-sec-based hypophosphorous acid into the step 2#Oil 30 g/t.
CN202010348226.6A 2020-04-28 2020-04-28 Mineral processing technology for cracked rock type copper oxide tin ore Pending CN111632745A (en)

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Application publication date: 20200908