CN110560272A - Mineral separation process of carbon-containing copper sulfide ore - Google Patents
Mineral separation process of carbon-containing copper sulfide ore Download PDFInfo
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- CN110560272A CN110560272A CN201910891733.1A CN201910891733A CN110560272A CN 110560272 A CN110560272 A CN 110560272A CN 201910891733 A CN201910891733 A CN 201910891733A CN 110560272 A CN110560272 A CN 110560272A
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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
- B03D1/002—Inorganic 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
- B03D1/00—Flotation
- B03D1/02—Froth-flotation processes
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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
- B03D2201/007—Modifying reagents for adjusting pH or conductivity
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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
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- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to the technical field of mineral separation, in particular to a mineral separation process of copper sulfide ore containing carbon. The method comprises the following steps: (1) crushing and grinding raw ore: crushing and grinding raw ore, and then feeding the raw ore into a stirring tank; (2) size mixing: adding sulfuric acid into the stirring tank, and stirring to obtain ore pulp; (3) roughing: adding a regulator, a collecting agent and a foaming agent into the ore pulp, and performing rough concentration to obtain rough concentrate and rough tailings; (4) selecting: adding a collecting agent into the rough concentrate, carrying out concentration to obtain flotation copper concentrate and concentration tailings, and returning concentration middlings sequentially after one or more times of concentration. The invention eliminates the interference of carbon to the copper mineral flotation by adding sulfuric acid for size mixing.
Description
Technical Field
the invention relates to the technical field of mineral separation, in particular to a mineral separation process of copper sulfide ore containing carbon.
background
flotation of carbonaceous copper ores has been a problem in the mineral separation industry. The carbonaceous material has good adsorbability and floatability, can cause great interference to the flotation of copper minerals, and is mainly represented as follows: the carbonaceous matter adsorbs and consumes the flotation reagent, so that the consumption of the reagent is greatly increased, and the floatability of copper minerals is interfered; the carbon substance is hydrophobic and easy to float, and the grade of the copper concentrate is reduced. A common method of eliminating the carbonaceous effect is decarburization or carbon suppression. The carbon suppression is mainly realized by adding organic carbon suppressants such as cellulose, polyoxyethylene ether and the like in the flotation of copper ores, and is mainly suitable for ores with low carbon content or valuable minerals wrapped by carbonaceous materials. For ores with high carbon content, the decarburization is mainly selected, which has the disadvantage that a part of the copper is lost, resulting in a reduced copper recovery. Meanwhile, the existing decarburization or carbon suppression mode has higher cost, and the development of the method for eliminating the carbon influence, which has low cost and high recovery rate in the flotation of the copper ore containing carbon, has important significance.
disclosure of Invention
the invention aims to provide a mineral processing technology of copper sulphide ore containing carbonaceous substances, which solves the problems of high cost and low recovery rate of the decarburization or carbon suppression method adopted to eliminate the carbonaceous influence of the copper sulphide ore containing carbonaceous substances at present.
In order to solve the technical problems, the invention adopts the following technical scheme:
A mineral processing technology of copper sulfide ore containing carbonaceous comprises the following steps:
(1) Crushing and grinding raw ore: crushing and grinding raw ore, and then feeding the raw ore into a stirring tank;
(2) Size mixing: adding sulfuric acid into the stirring tank, and stirring to obtain ore pulp;
(3) Roughing: adding a regulator, a collecting agent and a foaming agent into the ore pulp, and performing rough concentration to obtain rough concentrate and rough tailings;
(4) Selecting: adding a collecting agent into the rough concentrate, carrying out concentration to obtain flotation copper concentrate and concentration tailings, and returning concentration middlings sequentially after one or more times of concentration.
preferably, the method further comprises the step (5) of scavenging: adding a regulator, a collecting agent and a foaming agent into the roughed tailings, and scavenging to obtain scavenged concentrate and final tailings, wherein the scavenged concentrate returns to the stirring tank, scavenging passes once or more times, and scavenged middlings return sequentially.
preferably, in the step (4), the concentration tailings are returned to the stirring tank.
Preferably, the modifier is sodium sulfide, the collector is butyl xanthate and/or butyl ammonium nigride, and the foaming agent is 2# oil.
preferably, in the step (3) of coarse selection, the amount of sodium sulfide is 100 ~ 400g/t, the total amount of butyl xanthate and/or butyl ammonium black powder is 1 ~ 200g/t, and the amount of 2# oil is 80 ~ 200g/t, and in the step (4) of fine selection, the total amount of butyl xanthate and/or butyl ammonium black powder is 1 ~ 20 g/t.
Further, in the step (3), during rough selection, the amount of sodium sulfide added into the ore pulp is 120g/t, the total amount of the butyl xanthate and/or butyl ammonium nigride is 100g/t, and the amount of the 2# oil added is 90 g/t; and (4) in the fine selection in the step (4), the dosage of the butyl xanthate and/or the butyl ammonium nixie is added into the rough concentrate for 20 g/t.
preferably, in the step (1), in the crushing and grinding of the raw ore, the fineness of the ground ore is controlled to be less than 0.074 mm and accounts for 65 ~ 85%.
preferably, in the step (2), the amount of sulfuric acid is 3-15 kg/t based on the weight of the raw ore.
preferably, in the scavenging in the step (5), 30 ~ 50g/t of sodium sulfide is added into the roughed tailings to serve as a regulator, 1 ~ 20g/t of butyl xanthate and/or butyl ammonium blackate is/are used as a collector, and 10 ~ 30g/t of 2# oil is used as a foaming agent.
Compared with the prior art, the invention can at least produce one of the following beneficial effects: the method eliminates the interference of carbon to the flotation of copper minerals by adding sulfuric acid for size mixing; the invention inhibits the adsorption and consumption of the carbonaceous material to the flotation reagent, reduces the floatability of the carbonaceous material and the dosage of the reagent and saves the cost; the method chemically cleans the surface of the ore particles and increases the floatability of the copper minerals. Thus, the copper recovery and concentrate grade are improved.
Drawings
FIG. 1 is a flow chart of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1:
A mineral processing technology of copper sulfide ore containing carbonaceous comprises the following steps:
(1) Crushing and grinding raw ore: crushing and grinding raw ore, and feeding the crushed and ground raw ore into a stirring tank, wherein the grinding fineness is less than 0.074 mm and accounts for 65%;
(2) size mixing: adding sulfuric acid into the stirring tank, and stirring to obtain ore pulp, wherein the dosage of the sulfuric acid is 15kg/t based on the weight of the raw ore;
(3) Roughing: adding 100g/t of sodium sulfide into ore pulp as a regulator, 1g/t of butyl xanthate as a collector and 80g/t of 2# oil as a foaming agent, performing rough concentration to obtain rough concentrate and rough tailings, and performing rough concentration twice;
(4) Selecting: adding a collecting agent with the dosage of the butyl xanthate being 1g/t in total to the rough concentrate, obtaining flotation copper concentrate and concentration tailings after concentration, and performing concentration twice, wherein the concentration middlings are returned in sequence.
example 2:
A mineral processing technology of copper sulfide ore containing carbonaceous comprises the following steps:
(1) Crushing and grinding raw ore: raw ore enters a stirring tank after being crushed and ground, and the grinding fineness is less than 0.074 mm and accounts for 85 percent;
(2) size mixing: adding sulfuric acid into the stirring tank, and stirring to obtain ore pulp, wherein the dosage of the sulfuric acid is 3kg/t based on the weight of the raw ore;
(3) Roughing: adding 400g/t of sodium sulfide into ore pulp as a regulator, 200g/t of ammonium butyl black as a collector and 200g/t of 2# oil as a foaming agent, performing rough concentration to obtain rough concentrate and rough tailings, and performing rough concentration twice;
(4) Selecting: adding a collecting agent with the dosage of 20g/t of the ammonium nitrate black powder into the rough concentrate, carrying out concentration to obtain flotation copper concentrate and concentration tailings, and carrying out concentration twice, wherein the concentration middlings return sequentially, and the concentration tailings return to the stirring tank.
Example 3:
a mineral processing technology of copper sulfide ore containing carbonaceous comprises the following steps:
(1) crushing and grinding raw ore: raw ore enters a stirring tank after being crushed and ground, and the grinding fineness is less than 0.074 mm and accounts for 85 percent;
(2) Size mixing: adding sulfuric acid into the stirring tank, and stirring to obtain ore pulp, wherein the dosage of the sulfuric acid is 15kg/t based on the weight of the raw ore;
(3) Roughing: adding 100g/t of sodium sulfide into ore pulp as a regulator, 200g/t of butyl xanthate as a collector and 200g/t of 2# oil as a foaming agent, performing rough concentration to obtain rough concentrate and rough tailings, and performing rough concentration twice;
(4) selecting: adding a collecting agent with the dosage of the butyl xanthate being 1g/t in total to the rough concentrate, obtaining flotation copper concentrate and concentration tailings after concentration, and performing concentration twice, wherein the concentration middlings return sequentially, and the concentration tailings return to the stirring tank.
(5) Sweeping: adding 50g/t of sodium sulfide as a regulator, 20g/t of butyl xanthate as a collector and 10g/t of foaming agent of 2# oil into the roughed tailings, and scavenging to obtain scavenged concentrate and final tailings, wherein the scavenged concentrate returns to the stirring tank.
example 4:
A mineral processing technology of copper sulfide ore containing carbonaceous comprises the following steps:
(1) crushing and grinding raw ore: crushing and grinding raw ore, and feeding the crushed and ground raw ore into a stirring tank, wherein the grinding fineness is less than 0.074 mm and accounts for 70%;
(2) Size mixing: adding sulfuric acid into the stirring tank, and stirring to obtain ore pulp, wherein the dosage of the sulfuric acid is 12kg/t based on the weight of the raw ore;
(3) roughing: adding 120g/t of sodium sulfide into ore pulp as a regulator, 100g/t of butyl xanthate as a collector and 90g/t of 2# oil as a foaming agent, performing rough concentration to obtain rough concentrate and rough tailings, and performing rough concentration twice;
(4) selecting: and adding a collecting agent with the dosage of 20g/t of butyl xanthate into the rough concentrate, carrying out concentration to obtain flotation copper concentrate and concentration tailings, and carrying out concentration twice, wherein the concentration middlings return sequentially, and the concentration tailings return to the stirring tank.
(5) sweeping: adding 30g/t of sodium sulfide as a regulator, 20g/t of butyl xanthate as a collector and 20g/t of foaming agent of 2# oil into the roughed tailings, and scavenging to obtain scavenged concentrate and final tailings, wherein the scavenged concentrate returns to the stirring tank.
the following test example groups:
example 5:
A mineral processing technology of copper sulfide ore containing carbonaceous comprises the following steps:
(1) crushing and grinding raw ore: raw ore containing 0.70% of copper, crushing and grinding the raw ore, and then feeding the crushed raw ore into a stirring tank, wherein the grinding fineness is less than 0.074 mm and accounts for 72%;
(2) size mixing: adding sulfuric acid into the stirring tank, and stirring to obtain ore pulp, wherein the dosage of the sulfuric acid is 9.2kg/t based on the weight of the raw ore;
(3) roughing: adding 120g/t of sodium sulfide into ore pulp as a regulator, 90g/t of butyl xanthate as a collector and 210g/t of 2# oil as a foaming agent, performing rough concentration to obtain rough concentrate and rough tailings, and performing rough concentration twice;
(4) Selecting: and adding a collecting agent with the dosage of 20g/t of butyl xanthate into the rough concentrate, carrying out concentration to obtain flotation copper concentrate and concentration tailings, and carrying out concentration twice, wherein the concentration middlings return sequentially, and the concentration tailings return to the stirring tank.
(5) sweeping: adding 30g/t of sodium sulfide as a regulator, 10g/t of butyl xanthate as a collector and 20g/t of foaming agent of 2# oil into the rough tailings, and scavenging to obtain scavenged concentrate and final tailings, wherein the scavenged concentrate returns to the stirring tank. The implementation result is as follows: the concentrate copper grade is 21.35 percent, and the concentrate copper recovery rate is 86.09 percent.
the most preferred embodiment is as follows:
on the basis of example 5, the remaining conditions are the same, with the difference that: firstly, the dose of the yellow-butyl drug is changed into the ammonium-butyl black drug: the coarse selection in the step (3) is 100g/t, and the sweep in the step (5) is 20 g/t; ② in the step (3), the using amount of the 2# oil is 90 g/t. The implementation result is as follows: the concentrate copper grade is 20.97 percent, and the concentrate copper recovery rate is 88.75 percent.
Example 7:
This group is a control group of other methods, and the other conditions are the same based on example 5, except that: in the step (2), the sulfuric acid is changed into lime, and the lime is used in an amount of 2000g/t based on the weight of the raw ore. The implementation result is as follows: the concentrate copper grade is 16.78 percent, and the concentrate copper recovery rate is 73.04 percent.
reference throughout this specification to multiple illustrative embodiments means that a particular method described in connection with the embodiments is included in at least one embodiment described generally throughout this application. The appearances of the same phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, while a method is described in connection with any one embodiment, it is to be understood that it is within the scope of the invention to implement such a method in connection with other embodiments.
Claims (9)
1. a mineral processing technology of copper sulfide ore containing carbon is characterized in that: the method comprises the following steps:
(1) Crushing and grinding raw ore: crushing and grinding raw ore, and then feeding the raw ore into a stirring tank;
(2) Size mixing: adding sulfuric acid into the stirring tank, and stirring to obtain ore pulp;
(3) roughing: adding a regulator, a collecting agent and a foaming agent into the ore pulp, and performing rough concentration to obtain rough concentrate and rough tailings;
(4) Selecting: and adding a collecting agent into the rough concentrate, and carrying out concentration to obtain the flotation copper concentrate and the concentration tailings.
2. the beneficiation process of carbonaceous copper sulphide ore according to claim 1, wherein: further comprises the following steps of (5) scavenging: adding a regulator, a collector and a foaming agent into the roughed tailings, and scavenging to obtain scavenged concentrate and final tailings, wherein the scavenged concentrate returns to the stirring tank.
3. The beneficiation process of carbonaceous copper sulphide ore according to claim 1, wherein: and (4) in the fine selection in the step (4), returning the fine selection tailings to the stirring tank.
4. the beneficiation process of carbonaceous copper sulphide ore according to claim 1, wherein: the modifier is sodium sulfide, the collector is butyl xanthate and/or butyl ammonium nigrogen, and the foaming agent is 2# oil.
5. the beneficiation process for the carbonaceous copper sulfide ore according to claim 4, characterized in that in the step (3), sodium sulfide is added into ore pulp at a ratio of 100 ~ 400g/t, the dosage of the butyl xanthate and/or the butyl ammonium black is 1 ~ 200g/t, and the dosage of the No. 2 oil is 80 ~ 200g/t, and in the step (4), the dosage of the butyl xanthate and/or the butyl ammonium black is 1 ~ 20 g/t.
6. The beneficiation process of carbonaceous copper sulphide ore according to claim 4, wherein: in the step (3), during rough selection, the amount of sodium sulfide added into the ore pulp is 120g/t, the total amount of the butyl xanthate and/or butyl ammonium nigride is 100g/t, and the amount of the No. 2 oil added is 90 g/t; and (4) in the fine selection in the step (4), the dosage of the butyl xanthate and/or the butyl ammonium nixie is added into the rough concentrate for 20 g/t.
7. the beneficiation process of the carbonaceous copper sulphide ore according to claim 1, wherein in the step (1), the raw ore is crushed and ground, and the grinding fineness is controlled to be less than 0.074 mm and accounts for 65 ~ 85%.
8. The beneficiation process of carbonaceous copper sulphide ore according to claim 1, wherein: in the step (2), the amount of sulfuric acid is 3-15 kg/t based on the weight of the raw ore.
9. the beneficiation process of the carbonaceous copper sulfide ore according to claim 2, characterized in that in the step (5), 30 ~ 50g/t of sodium sulfide is added into rough tailings to serve as a regulator, 1 ~ 20g/t of butyl xanthate and/or butyl ammonium black pigment is/are used as a collector, and 10 ~ 30g/t of 2# oil is used as a foaming agent.
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2019
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Application publication date: 20191213 |