CN110918263B - Non-copper sulfide ore inhibitor and application thereof - Google Patents
Non-copper sulfide ore inhibitor and application thereof Download PDFInfo
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- CN110918263B CN110918263B CN202010019995.1A CN202010019995A CN110918263B CN 110918263 B CN110918263 B CN 110918263B CN 202010019995 A CN202010019995 A CN 202010019995A CN 110918263 B CN110918263 B CN 110918263B
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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
- B03D1/004—Organic compounds
- B03D1/016—Macromolecular 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
- B03D2201/06—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
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Abstract
The invention relates to the technical field of non-ferrous metal ore dressing, in particular to a non-copper sulphide ore inhibitor and application thereof. The non-copper sulphide ore inhibitor comprises 1-3 parts of xanthan gum, 1-2 parts of pectin and 1-2 parts of Arabic gum by mass. The copper mixed concentrate inhibitor is simple to prepare, low in cost, green and environment-friendly, and has a very strong inhibiting effect on molybdenite, galena, sphalerite, pyrite and other sulfide ores in the copper mixed concentrate. The inhibitor can realize the efficient flotation separation of chalcopyrite and other sulfide minerals.
Description
Technical Field
The invention relates to the technical field of non-ferrous metal ore dressing, in particular to a non-copper sulphide ore inhibitor and application thereof.
Background
Copper is an important rare metal and a strategic reserve resource, and the average content of copper in the crust is only one hundred thousand. Chalcopyrite is the most major source of extracted copper, and is usually associated with sulphide minerals. Statistically, nearly 75% of copper and 50% of molybdenum are produced from copper-molybdenum ores in the world. The copper-molybdenum ore is generally subjected to mixed flotation, and then copper and molybdenum separation is usually performed by adopting a copper-floating restraining or molybdenum-copper restraining manner. The most used method at present is to inhibit chalcopyrite from floating molybdenite, and the commonly used copper sulfide ore inhibitors mainly comprise sulfides (sodium sulfide, sodium hydrosulfide and the like), cyanides (sodium cyanide, potassium cyanide and the like), nokes reagent and sodium thioglycolate. Sodium sulfide water passing through HS－The copper sulfide is adsorbed on the surface of copper sulfide minerals so that the copper sulfide minerals are hydrophilic and inhibited, but the dosage of sodium sulfide is large, and toxic hydrogen sulfide gas is easily generated under an acidic condition. Although the cyanide has good inhibition effect, the cyanide belongs to a highly toxic substance and has great harm to human bodies and environment. The Nox reagent contains elements such as phosphorus, arsenic and the like, causes concentrate pollution, and has the defects of difficult control of flotation, environmental pollution and the like. Thioglycolic acid is highly corrosive and has a strong pungent odor. In thatIn the aspect of copper-lead separation, dichromate is usually adopted to inhibit galena or cyanide is usually adopted to inhibit chalcopyrite to realize copper-lead separation, but the reagents have the problems of low selectivity, environmental pollution and the like.
In order to solve the above problems, patent document CN110465412A discloses a molybdenite beneficiation inhibitor and a preparation method thereof, which prepares a molybdenite inhibitor by dissolving sodium silicate, guar gum, aluminum sulfate, dodecahydrate and potassium aluminum sulfate, sodium carboxymethyl cellulose, tannin extract, dextrin in water. The method has the advantages of complex preparation process and high production cost. Patent document No. CN101972706A discloses an inhibitor for separating copper molybdenum minerals, a preparation method and an application thereof, wherein glycine or alanine, ethyl isothiocyanate, triethylamine, acetone and water are used to prepare a white crystalline solid as the copper mineral inhibitor. The method has long preparation process and high production cost. The patent document with the publication number of CN105537002A discloses the preparation and application of a flotation separation inhibitor for copper sulfide molybdenum bulk concentrates, and the method utilizes chitosan and thioglycolic acid to prepare sulfhydryl chitosan to be used as a copper sulfide ore inhibitor. Although the dosage is small, the use is safe and environment-friendly, the raw material chitosan has the defects of high price, overhigh production cost and the like, and the commercial application value is not realized. The patent document with the publication number of CN105665149A discloses a preparation method and application of a non-molybdenum sulfide mineral flotation inhibitor, the method utilizes a compound prepared by sulfide salt, carbon disulfide and water-soluble polymers under specific conditions, the agent has a good inhibition effect on copper sulfide minerals, the synthesis process is simple, but the agent is unstable in property, and is easy to hydrolyze to generate CS2 toxic gas, so that the large-scale popularization and application are not facilitated. The patent document with publication number CN109482357A discloses the preparation of copper-molybdenum separation inhibitor and its application, the method utilizes mercaptoacetic acid and a hexanolamine to prepare N- (2-hydroxyethyl) -2-mercaptoacetamide under the condition of catalytic stirring. The medicament is expensive and difficult to use on a large scale.
Although the types and the preparation methods of the sulfide ore inhibitors disclosed at present are more, the defects of high cost, harsh preparation conditions and the like exist, so that the development of the efficient, low-cost and environment-friendly sulfide ore inhibitor has very important economic value for producing high-quality copper concentrates.
Disclosure of Invention
The invention aims to solve the problems and provides a non-copper sulphide ore inhibitor and application thereof.
The technical scheme for solving the problems is to provide the non-copper sulfide ore inhibitor which comprises 1-3 parts of xanthan gum, 1-2 parts of pectin and 1-2 parts of gum arabic by mass.
The invention also aims to provide application of the inhibitor for the non-copper sulfide ore, which is applied to copper-molybdenum flotation separation, copper-lead flotation separation, copper-zinc flotation separation, sulfur-copper flotation separation or flotation separation of multi-metal sulfide ores such as copper, lead, zinc, sulfur, molybdenum and the like.
Preferably, the method comprises the following steps:
(1) adding water into the minerals and stirring to obtain ore pulp; mixing xanthan gum, pectin and Arabic gum according to parts by mass to prepare an inhibitor;
(2) adding an inhibitor into the ore pulp;
(3) and (5) performing air flotation to obtain a foam product and tailings.
Preferably, the concentration of the inhibitor is 1-1000 mg/L.
Preferably, the concentration of the inhibitor is 50-800 mg/L.
Preferably, in the step (1), the mineral is stirred by adding water and the pH is adjusted to 6-12 to obtain ore pulp.
Preferably, the pulp pH is adjusted to 9-12.
The method is characterized in that a collecting agent is not added, and preferably, in the step (2), the collecting agent is added, wherein the collecting agent comprises one or more of xanthate, black, diesel, kerosene and hydrocarbon oil. The amount of the collector is the amount commonly used in the flotation field.
Preferably, in the step (2), a foaming agent is added, wherein the foaming agent comprises one or more of methyl isobutyl carbinol and No. 2 oil. The amount of frother used is that amount which is conventional in the art of flotation.
The invention has the beneficial effects that:
1. the non-copper sulfide ore inhibitor is a high molecular polysaccharide substance, and has a large amount of hydrophilic hydroxyl and carboxyl. Because strong hydrophobic acting force exists between nonpolar groups of the polysaccharide inhibitor molecules and molybdenite, the polysaccharide inhibitor molecules can be adsorbed on the surface of the molybdenite through the hydrophobic acting force, and a large number of hydrophilic hydroxyl groups and carboxyl groups are exposed in an aqueous solution so as to make the surface of the molybdenite hydrophilic and inhibited. In addition, carboxyl in the polysaccharide molecules can be complexed with metal ions on the surfaces of galena, sphalerite and pyrite to form chelate compounds which are strongly adsorbed on the surfaces of minerals, and hydrophilic groups are exposed in an aqueous solution, so that the hydrophilicity of the surfaces of the minerals is inhibited. Therefore, the non-copper sulphide ore inhibitor has excellent inhibiting effect on sulphide ores such as molybdenite, galena, sphalerite, pyrite and the like. The flotation separation method can be applied to flotation separation of copper, molybdenum, copper, lead, copper, zinc, sulfur and copper and other bulk concentrates or flotation separation of copper, molybdenum, lead, zinc and sulfur polymetallic sulfide ores, and can realize efficient flotation separation of chalcopyrite and other sulfide ores.
2. The non-copper sulphide ore inhibitor is simple to prepare, is environment-friendly and cannot cause pollution.
3. The non-copper sulfide ore inhibitor has less consumption, and simultaneously, the separation effect and the separation cost of the non-copper sulfide ore inhibitor are superior to those of the traditional sulfide ore inhibitors such as sodium sulfide, sodium hydrosulfide, phosphonocks, sodium thioglycolate and the like in the prior art.
4. The non-copper sulfide ore inhibitor has the advantages of good dispersibility, strong selectivity, good inhibition effect, wide pH range, small dosage, low price and easy large-scale popularization.
Drawings
FIG. 1 is a flow chart of the application of a non-copper sulphide ore inhibitor;
FIG. 2 is a graph showing the results of experiments conducted in example 1 of the present invention;
FIG. 3 is a graph showing the results of experiments conducted in example 2 of the present invention;
FIG. 4 is a graph showing the results of experiments conducted in example 3 of the present invention;
FIG. 5 is a graph showing the results of the experiment of example 4 of the present invention.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
Example 1
A non-copper sulphide ore inhibitor prepared by the following steps:
mixing and uniformly stirring 2 parts of xanthan gum, 1.5 parts of pectin and 1.5 parts of gum arabic according to parts by mass to obtain the non-copper sulfide ore inhibitor.
The prepared non-copper sulphide ore inhibitor is respectively applied to the flotation of chalcopyrite, molybdenite and galena single minerals with the granularity of +38-74 mu m, as shown in figure 1, and comprises the following steps:
(1) respectively taking 2g of chalcopyrite, molybdenite and galena, adding the chalcopyrite, the molybdenite and the galena into 50mL of distilled water, then placing the chalcopyrite, the molybdenite and the galena into a 70mL tank-hanging flotation machine, stirring and mixing the pulp at the rotating speed of 1300r/min to fully disperse the pulp, and adjusting the pH value of the pulp to be 9.
(2) Adding the prepared inhibitor into the ore pulp respectively, and stirring for 5 min; then adding 30mg/L xanthate as a collecting agent, and stirring for 2 min; finally, 20mg/L MIBC as a foaming agent is added and stirred for 1 min. The concentrations of the added inhibitor are 0, 3, 10, 20, 50, 80, 100, 200, 500 and 800mg/L respectively.
(3) And (4) performing air flotation on each part of ore pulp to obtain a foam product and tailings.
And respectively filtering, drying and weighing the foam product and the tailings, and calculating the floating rate, wherein the result is shown in figure 2. As can be seen from FIG. 2, the inhibitor of the present application has no inhibiting effect on chalcopyrite, has strong inhibiting ability on molybdenite and galena, and has very low dosage.
Example 2
A non-copper sulphide ore inhibitor prepared by the following steps:
mixing 1 part of xanthan gum, 1 part of pectin and 1 part of gum arabic according to the mass part, and uniformly stirring to obtain the non-copper sulfide ore inhibitor.
The prepared non-copper sulphide ore inhibitor is respectively applied to the flotation of sphalerite and pyrite monomineral with the granularity of +38-74 mu m, and the method comprises the following steps:
(1) respectively taking 2g of sphalerite and pyrite, adding the sphalerite and the pyrite into 50mL of distilled water, then placing the mixture into a 70mL tank-hanging flotation machine, stirring and mixing the slurry at the rotating speed of 1300r/min to fully disperse the slurry, and adjusting the pH value of the slurry to be 8.
(2) Adding the prepared inhibitor into the ore pulp respectively, and stirring for 5 min; then adding 30mg/L butyl xanthate as a collecting agent, and stirring for 2 min; finally, 20mg/L MIBC as a foaming agent is added and stirred for 1 min. The concentrations of the added inhibitor are respectively 0, 10, 20, 50, 80, 100, 200, 500 and 800 mg/L.
(3) And (4) performing air flotation on each part of ore pulp to obtain a foam product and tailings.
The foam product and the tailings were filtered, dried, weighed, and the flotation rate was calculated, the results are shown in fig. 3. As can be seen from FIG. 3, the inhibitor has strong inhibiting ability on pyrite and sphalerite, and the floatation rate of pyrite is only 6.24% when the dosage of the inhibitor is 50 mg/L; when the dosage of the inhibitor is 80 mg/L, the upward floating rate of the sphalerite is only 15.65 percent.
Example 3
A non-copper sulphide ore inhibitor prepared by the following steps:
according to the mass parts, 3 parts of xanthan gum, 2 parts of pectin and 2 parts of Arabic gum are mixed and uniformly stirred to obtain the non-copper sulfide ore inhibitor.
The prepared non-copper sulphide ore inhibitor is respectively applied to flotation of single minerals of chalcopyrite, molybdenite and galena with the particle size of +38-74 mu m, and comprises the following steps:
(1) respectively taking 2g of chalcopyrite, molybdenite and galena, adding the chalcopyrite, the molybdenite and the galena into 50mL of distilled water, then placing the chalcopyrite, the molybdenite and the galena into a 70mL tank-hanging flotation machine, stirring and mixing the pulp at the rotating speed of 1300r/min to fully disperse the pulp, and adjusting the pH value of the pulp to 6, 8, 9, 10 and 12.
(2) Adding the prepared inhibitor into the ore pulp respectively, and stirring for 5 min; then adding 30mg/L of black powder as a collecting agent, and stirring for 2 min; finally, 20mg/L MIBC as a foaming agent is added and stirred for 1 min. Wherein the concentration of the inhibitor in the chalcopyrite ore pulp is 80 mg/L, the concentration of the inhibitor in the molybdenite ore pulp is 80 mg/L, and the concentration of the inhibitor in the galena ore pulp is 20 mg/L.
(3) And (4) performing air flotation on each part of ore pulp to obtain a foam product and tailings.
The foam product and the tailings were filtered, dried, weighed, and the flotation rate was calculated, the results are shown in fig. 4. As can be seen from FIG. 4, the inhibitor of the present invention has almost no inhibitory effect on chalcopyrite in the pH range of 6 to 12, and has a very good inhibitory effect on galena in the pH range of 6 to 12, and the galena flotation rate is only 3%. The inhibitor has a good inhibition effect on the molybdenite within the pH range of 9-12, and the floating rate of the molybdenite fluctuates about 10%.
Example 4
A non-copper sulphide ore inhibitor prepared by the following steps:
mixing and uniformly stirring 2 parts of xanthan gum, 1.5 parts of pectin and 1.5 parts of gum arabic according to parts by mass to obtain the non-copper sulfide ore inhibitor.
The prepared non-copper sulphide ore inhibitor is applied to flotation of mixed ores of chalcopyrite, molybdenite and galena with the granularity of +38-74 mu m, and comprises the following steps:
(1) 1g of chalcopyrite, 0.5g of molybdenite and 0.5g of galena are mixed and added into 50mL of distilled water, then the mixture is placed into a 70mL tank-hanging flotation machine, and the slurry is stirred and mixed at the rotating speed of 1300r/min, so that the ore pulp is fully dispersed, and the pH value of the ore pulp is adjusted to be 9.
(2) Adding the prepared inhibitor into each part of ore pulp, and stirring for 5 min; then adding 30mg/L butyl xanthate as a collecting agent, and stirring for 2 min; finally, 20mg/L MIBC as a foaming agent is added and stirred for 1 min. The concentration of the inhibitor added into the ore pulp is respectively 0, 10, 20, 50, 80, 100, 200, 500 and 800 mg/L.
(3) And (4) performing air flotation on each part of ore pulp to obtain a foam product and tailings.
And respectively filtering and drying the foam product and the tailings, weighing, testing the contents of copper, molybdenum and lead in the concentrate, and calculating the recovery rates of the copper, the molybdenum and the lead in the concentrate. The results are shown in FIG. 5. And as can be seen from fig. 5, the inhibitor of the present application can realize effective flotation separation of molybdenum and copper and lead under the condition of 100mg/L, wherein the recovery rate of chalcopyrite is as high as 89.87%, while the recovery rate of molybdenite is only 9.84%, and the recovery rate of galena is only 5.89%.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (8)
1. The application of the non-copper sulphide ore inhibitor is characterized in that: the method is applied to copper-molybdenum flotation separation, copper-lead flotation separation, copper-zinc flotation separation and sulfur-copper flotation separation or flotation separation of copper, lead, zinc, sulfur and molybdenum polymetallic sulfide ores; the non-copper sulfide ore inhibitor comprises 1-3 parts of xanthan gum, 1-2 parts of pectin and 1-2 parts of Arabic gum by mass.
2. The use of a non-copper sulphide ore inhibitor according to claim 1, wherein: the method comprises the following steps:
(1) adding water into the minerals and stirring to obtain ore pulp; mixing xanthan gum, pectin and Arabic gum according to parts by mass to prepare an inhibitor;
(2) adding an inhibitor into the ore pulp;
(3) and (5) performing air flotation to obtain a foam product and tailings.
3. The use of a non-copper sulphide ore inhibitor according to claim 2, wherein: the concentration of the inhibitor is 1-1000 mg/L.
4. The use of a non-copper sulphide ore inhibitor according to claim 3, wherein: the concentration of the inhibitor is 50-800 mg/L.
5. The use of a non-copper sulphide ore inhibitor according to claim 2, wherein: in the step (1), the mineral is added with water and stirred, and the pH value is adjusted to 6-12 to obtain slurry.
6. The use of a non-copper sulphide ore inhibitor according to claim 5, wherein: adjusting the pH value of the ore pulp to 9-12.
7. The use of a non-copper sulphide ore inhibitor according to claim 2, wherein: and (3) adding a collecting agent in the step (2), wherein the collecting agent comprises one or more of xanthate, black powder, diesel oil, kerosene and hydrocarbon oil.
8. The use of a non-copper sulphide ore inhibitor according to claim 2, wherein: and (3) adding a foaming agent in the step (2), wherein the foaming agent comprises one or more of methyl isobutyl carbinol and No. 2 oil.
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| CN112246443B (en) * | 2020-09-30 | 2021-08-17 | 中南大学 | Flotation method for lead-zinc sulfide ore and sphalerite combined inhibitor |
| CN112403685B (en) * | 2020-10-26 | 2022-03-01 | 中南大学 | Flotation method for talc-containing molybdenum-zinc ore |
| CN112474062A (en) * | 2020-12-30 | 2021-03-12 | 武汉工程大学 | Sphalerite inhibitor and application method thereof |
| CN113477405B (en) * | 2021-05-24 | 2022-05-27 | 长沙矿冶研究院有限责任公司 | Beneficiation activator for sphalerite and willemite and method for reducing zinc by flotation of iron ore concentrate |
| CN114904661B (en) * | 2022-04-19 | 2024-05-10 | 武汉工程大学 | Sphalerite inhibitor for lead-zinc sulfide ore flotation separation process, application of sphalerite inhibitor and lead-zinc sulfide ore flotation separation method |
| CN115090426B (en) * | 2022-05-05 | 2023-08-08 | 中国矿业大学(北京) | Novel inhibitor-based tin-lead-zinc polymetallic ore flotation separation method |
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