CN114589012B - Copper-molybdenum-lead ore flotation flocculant, preparation method thereof and flocculation flotation method - Google Patents
Copper-molybdenum-lead ore flotation flocculant, preparation method thereof and flocculation flotation method Download PDFInfo
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- CN114589012B CN114589012B CN202210312838.9A CN202210312838A CN114589012B CN 114589012 B CN114589012 B CN 114589012B CN 202210312838 A CN202210312838 A CN 202210312838A CN 114589012 B CN114589012 B CN 114589012B
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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
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/002—Coagulants and Flocculants
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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
- B03D2203/04—Non-sulfide ores
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention relates to the technical field of flotation separation, in particular to a copper-molybdenum-lead ore flotation flocculant, a preparation method thereof and a flocculation flotation method. The copper-molybdenum-lead ore flotation flocculant provided by the invention comprises polyethylene oxide and sodium polyacrylate, wherein the mass ratio of the polyethylene oxide to the sodium polyacrylate is 1-15: 1. through scientific proportioning and cooperative matching of polyethylene oxide and sodium polyacrylate, the copper-molybdenum-lead ore has good selective flocculation effect on micro-fine copper-molybdenum-lead ores, and has weaker flocculation effect on minerals such as gangue, so that micro-fine copper-molybdenum-lead ores can be selectively flocculated, and the micro-fine copper-molybdenum-lead ores can be separated from other minerals such as gangue and talcum; especially has stronger flocculation effect on the molybdenite with micro-particles, can greatly improve the floatability of the molybdenite and has higher recovery rate.
Description
Technical Field
The invention relates to the technical field of flotation separation, in particular to a copper-molybdenum-lead ore flotation flocculant, a preparation method thereof and a flocculation flotation method.
Background
Molybdenum is widely used in various industries because of its high strength, high rigidity, high melting point, high conductivity, corrosion resistance, and large linear expansion coefficient. As science and technology further evolve, industry demand for molybdenum metal has tended to increase. Molybdenum mainly comprising metal sulfides(MoS 2 ) In the form of the zebra-type molybdenum deposit or intergrowth in the zebra-type copper deposit, and in small amounts in the sand-stuck-rock type and quartz-vein type deposits.
At present, along with the continuous increase of the demand of the society for molybdenum, the exploitation strength and depth of molybdenum ore resources are correspondingly increased. The rich ore in molybdenum ore resources is less and less, lean, fine, miscellaneous and difficult to treat ores are gradually increased, and meanwhile, a large amount of chalcopyrite, galena and a large amount of fine particle molybdenite in the tailings of the copper-molybdenum separation plant are lost due to the fact that the particle size is fine, and the molybdenum ore is difficult to separate from a large amount of gangue, talcum and other minerals, so that molybdenum resources are difficult to effectively recycle and lose, and serious resource waste is caused. The existing micro-particle molybdenite flotation has the following general problems: (1) The fine-particle-grade mineral has small mass and low momentum, so that the probability of collision adhesion with bubbles is small, the flotation rate and recovery rate are low, and fine particles are mixed to reduce the concentrate grade; (2) The specific surface area of the fine-particle-grade minerals is large, the nonselective adsorption of the medicaments is serious, the medicament consumption is large, and the concentrate grade is reduced; (3) The surface energy is large, so that the oxidation rate is high, the floatability of fine ores is reduced, (4) the solubility of the fine ores is large, and dissolved components interfere with the flotation process; (5) finely grinding molybdenite so that the layered structure is broken; the surface energy of the particles is increased, the hydrophobicity is deteriorated, and the floatability is drastically deteriorated.
In summary, in the environment of complex and multiple continuous minerals such as lean minerals, fine minerals, miscellaneous minerals and gangue minerals or particularly fine particle sizes of minerals in flotation tailings, the conventional flotation method is difficult to efficiently separate minerals such as molybdenite and gangue.
In view of this, the present invention has been made.
Disclosure of Invention
The first object of the present invention is to provide a copper-molybdenum-lead ore floatation flocculant which has a strong flocculation effect on copper-molybdenum-lead ores of fine particles, particularly on molybdenite and galena ores under a proper floatation environment, thereby improving the floatability of corresponding valuable metals, and has a weak flocculation effect on minerals such as gangue, so that the copper-molybdenum-lead ores of fine particles can be selectively flocculated, and the copper-molybdenum-lead ores of fine particles can be separated from other minerals such as gangue and talcum.
The second aim of the invention is to provide a preparation method of the copper-molybdenum-lead ore flotation flocculant, which is simple to operate and suitable for large-scale industrial production.
The third object of the invention is to provide a flocculation flotation method, which adopts the copper-molybdenum-lead ore flotation flocculant, can be used for flocculation flotation enrichment of copper-molybdenum-lead ore with low flotation concentration, fine granularity and serious mud and copper-molybdenum-lead ore in flotation tailings thereof, and is beneficial to improving the comprehensive recovery rate of copper-molybdenum-lead ore because the floatability of copper-molybdenum-lead ore is greatly improved and the floatability of gangue ore is less affected.
In order to achieve the above object of the present invention, the following technical solutions are specifically adopted:
the invention provides a copper-molybdenum-lead ore flotation flocculant which comprises polyethylene oxide and sodium polyacrylate, wherein the mass ratio of the polyethylene oxide to the sodium polyacrylate is 1-15: 1.
the invention also provides a preparation method of the copper-molybdenum-lead ore flotation flocculant, which comprises the steps of mixing all the components.
The invention also provides a flocculation flotation method, which comprises the step of adding the copper-molybdenum-lead ore flotation flocculant into ore pulp.
Compared with the prior art, the invention has the beneficial effects that:
(1) The invention provides a copper-molybdenum-lead ore flotation flocculant which can be used for flotation of copper-molybdenum-lead ores with low concentration, fine granularity and serious mud, and solves the problem that the copper-molybdenum-lead ores with micro-fine particles are difficult to recycle in the prior art.
(2) The copper-molybdenum-lead ore flotation flocculant has good flocculation effect on copper-molybdenum-lead ores with micro-particles, can selectively flocculate the copper-molybdenum-lead ores with micro-particles, improves the floatability of the copper-molybdenum-lead ores, does not influence or has less influence on the floatability of other mineral particles such as gangue, talcum and the like, and has no or weaker flocculation effect on the copper-molybdenum-lead ores; thereby realizing selective agglomeration, being beneficial to separating the copper-molybdenum-lead ore of micro-fine particles from other minerals, and greatly increasing the selectivity and recovery rate of the copper-molybdenum-lead ore.
(3) The copper-molybdenum-lead ore flotation flocculant has a stronger flocculation effect on molybdenite, can greatly improve the floatability of the molybdenite, and has a more excellent effect on separating micro-fine molybdenite from other minerals.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of the invention for flocculation flotation using the copper molybdenum lead ore flotation flocculant of example 1.
FIG. 2 is a flow chart of the invention for flocculation flotation using the flocculant of comparative example 1.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings and detailed description, but it will be understood by those skilled in the art that the examples described below are some, but not all, examples of the present invention, and are intended to be illustrative of the present invention only and should not be construed as limiting the scope of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention. The specific conditions are not noted in the examples and are carried out according to conventional conditions or conditions recommended by the manufacturer. The reagents or apparatus used were conventional products commercially available without the manufacturer's attention.
The copper-molybdenum-lead ore flotation flocculant, the preparation method thereof and the flocculation flotation method are specifically described below.
In some embodiments of the invention, a copper molybdenum lead ore flotation flocculant is provided, which comprises polyethylene oxide and sodium polyacrylate, wherein the mass ratio of the polyethylene oxide to the sodium polyacrylate is 1-15: 1.
the copper molybdenum lead ore flotation flocculant comprises polyethylene oxide and sodium polyacrylate, wherein the polyethylene oxide and the sodium polyacrylate are matched with each other through scientific proportioning; polyethylene oxide is used as a hydrophobic flocculant, under the synergistic effect of a small amount of sodium polyacrylate, the floatability of copper-molybdenum lead ore can be increased, the floatability of other minerals such as gangue and talcum is not influenced or is less influenced, and selective agglomeration is realized, so that the flocculant has good flocculation effect on the copper-molybdenum lead ore, and has no or weaker flocculation effect on other minerals, and separation of the copper-molybdenum lead ore from the other minerals is facilitated.
The copper-molybdenum-lead ore flotation flocculant can be used for copper-molybdenum-lead ores with low concentration, fine granularity and serious mud, can selectively flocculate copper-molybdenum-lead ores with micro-fine particles, and solves the problem that the copper-molybdenum-lead ores with micro-fine particles are difficult to recycle; particularly for the micro-fine molybdenite, the copper-molybdenum-lead ore flotation flocculant has more excellent flocculation effect, and can separate the micro-fine molybdenite from other minerals, and the recovery rate can reach more than 80 percent.
In order to obtain a more excellent effect, the proportioning relationship between the polyethylene oxide and the sodium polyacrylate is optimized. In some embodiments of the invention, the mass ratio of polyethylene oxide to sodium polyacrylate is 5 to 7:1, a step of; typical but non-limiting, for example, the mass ratio of polyethylene oxide to sodium polyacrylate is 5:1. 5.5: 1. 6: 1. 6.5:1 or 7:1, etc.
In some embodiments of the invention, the polyethylene oxide has a weight average molecular weight of greater than or equal to 50000; preferably, the polyethylene oxide has a weight average molecular weight of 50000 ～ 8000000; more preferably, the polyethylene oxide has a weight average molecular weight of 250000 ～ 8000000.
In some embodiments of the invention, the flotation flocculant is a liquid formulation.
In some embodiments of the invention, the concentration of the flotation flocculant in the liquid formulation is 0.5 to 1.5g/L; typical but non-limiting concentrations of flotation flocculants are, for example, 0.5g/L, 0.6g/L, 0.7g/L, 0.8g/L, 0.9g/L, 1.0g/L, 1.1g/L, 1.2g/L, 1.3g/L, 1.4g/L or 1.5g/L, etc.
In some embodiments of the invention, the preparation method of the copper-molybdenum-lead ore flotation flocculant is also provided, and the components are mixed uniformly.
In some embodiments of the invention, a method of preparing a copper molybdenum lead ore flotation flocculant comprises the steps of:
uniformly mixing an aqueous solution of polyethylene oxide and an aqueous solution of sodium polyacrylate to obtain the copper-molybdenum-lead ore flotation flocculant.
In some embodiments of the invention, the copper molybdenum lead ore flotation flocculant is a viscous, colorless, transparent solution.
In some embodiments of the invention, a method for preparing sodium polyacrylate comprises the steps of:
(A) Sequentially adding n-dodecyl mercaptan, acrylic acid, isopropanol and distilled water into a constant-temperature water bath kettle, uniformly stirring, slowly dropwise adding an ammonium persulfate aqueous solution, and cooling to room temperature after the reaction is finished to obtain a reaction solution containing polyacrylic acid;
(B) And adding sodium hydroxide into the reaction solution containing polyacrylic acid until the pH value of the reaction solution is 7-8, and carrying out reduced pressure distillation and purification on the neutralized reaction solution to obtain sodium polyacrylate.
In some embodiments of the invention, the molar ratio of acrylic acid to n-dodecyl mercaptan is 25:1.
in some embodiments of the invention, the molar ratio of acrylic acid to isopropyl alcohol is 1:1.
in some embodiments of the invention, the molar ratio of acrylic acid to ammonium persulfate is 25:1.
in some embodiments of the invention, in step (a), the temperature of the reaction is 80 to 90 ℃; preferably, the temperature of the reaction is 85 ℃.
In some embodiments of the invention, in step (a), the reaction time is from 1.5 to 6 hours; preferably, the reaction time is 3 hours.
The sodium polyacrylate in the embodiment of the invention is prepared by the preparation method of the sodium polyacrylate.
In some embodiments of the invention, a flocculation flotation method is also provided, wherein the copper-molybdenum-lead ore flotation flocculant is added into ore pulp.
In some embodiments of the invention, the pulp has a pH of 7.5 to 10.5.
In some embodiments of the invention, the mineral content in the pulp is 5wt% to 20wt%; in the minerals, the content of mineral particles with the granularity less than or equal to 600 meshes is 35 to 70 weight percent.
In some embodiments of the invention, the mineral content in the pulp is 5-15 wt%; in the minerals, the content of the mineral particles with the granularity less than or equal to 600 meshes is 60 to 70 percent by weight; preferably, the mineral content in the ore pulp is 8-10wt%; more preferably, the content of mineral particles with the granularity less than or equal to 600 meshes in the mineral is 63-67 wt%.
The copper molybdenum lead ore flotation flocculant is not only suitable for flocculation flotation of copper molybdenum lead ores with larger particles, but also suitable for flocculation flotation of copper molybdenum lead ores with micro-fine particles.
In some embodiments of the invention, the minerals include copper molybdenum lead sulfide ore; preferably, the minerals include one or more of galena, molybdenite and chalcopyrite.
In some embodiments of the invention, the pulp has a molybdenum content of 0.1wt% to 5wt% and a copper content of 0.1wt% to 20wt%.
In some embodiments of the invention, the copper molybdenum lead ore flotation flocculant to mineral mass ratio is from 0.00001 to 0.00005, based on solids content: 1.
under the flotation condition, the invention can achieve good flocculation effect on the copper-molybdenum-lead ore of the micro-fine particles by only adding a small amount of copper-molybdenum-lead ore flotation flocculant, thereby realizing the flotation recovery of the copper-molybdenum-lead ore of the micro-fine particles.
In some embodiments of the invention, a flocculation flotation process comprises the steps of:
(A) Regulating the pH value of the ore pulp to 7.5-10.5;
(B) Sequentially adding at least three of a dispersing agent, a copper-molybdenum-lead ore flotation flocculant, an inhibitor, a collector and a foaming agent into the ore pulp with the pH value adjusted, and uniformly mixing;
(C) And (3) carrying out flotation on the well-mixed ore pulp to obtain concentrate and tailings.
In some embodiments of the present invention, in step (B), a dispersant, a copper molybdenum lead ore flotation flocculant, a collector and a foaming agent are sequentially added to the pH-adjusted pulp and mixed uniformly; or sequentially adding a dispersing agent, a copper-molybdenum-lead ore flotation flocculant, an inhibitor, a collector and a foaming agent into the ore pulp with the pH value adjusted, and uniformly mixing.
In some embodiments of the invention, the mass of the feed is the mass of the mineral in the pulp.
In some embodiments of the invention, the dispersant comprises one or more of sodium hexametaphosphate, water glass, and sodium lignin sulfonate; preferably, the dispersant is sodium hexametaphosphate.
In some embodiments of the invention, the dispersant is used in an amount of 350g/t to 3000g/t relative to the feed.
In some embodiments of the invention, the copper molybdenum lead ore flotation flocculant is used in an amount of 10g/t to 50g/t relative to the feed based on solids content.
In some embodiments of the invention, the inhibitor comprises one or more of sodium sulfide, BK511, and sodium thioglycolate.
In some embodiments of the invention, the inhibitor is used in an amount of 0 to 1500g/t relative to the feed; since the recovery of certain minerals may be negatively affected by the depressant, the depressant may be selectively added or not depending on the actual flotation conditions.
In some embodiments of the invention, the collector comprises one or more of diesel, mixed hydrocarbon oil, and AP; preferably, the collector comprises diesel. Among them, AP is commercially available from mining and metallurgy technologies group limited.
In some embodiments of the invention, the collector is used in an amount of 200g/t to 600g/t relative to the feed.
In some embodiments of the invention, the foaming agent comprises one or more of BK204, BK201 and a pine oil; preferably, the blowing agent comprises BK204.
In some embodiments of the invention, the frother is present in an amount of 10g/t to 80g/t relative to the amount of feed.
In some embodiments of the invention, in the step (B), dispersing agent is added into the ore pulp after the pH adjustment, and stirred for 2-5 min, copper-molybdenum-lead ore flotation flocculating agent is added, and stirred for 5-10 min, and then inhibitor and/or collector and foaming agent are sequentially added and mixed uniformly.
In some embodiments of the invention, the inhibitor, collector and frother are added at intervals of 2 to 5 minutes.
The features and capabilities of the present invention are described in further detail below in connection with the examples.
Example 1
The copper-molybdenum-lead ore flotation flocculant provided by the embodiment is a liquid preparation with the concentration of 1g/L, and the active ingredients of the liquid preparation are polyethylene oxide and sodium polyacrylate; the mass ratio of polyethylene oxide to sodium polyacrylate is 7:1, the weight average molecular weight of the polyethylene oxide was 250000.
The preparation method of the copper-molybdenum-lead ore flotation flocculant provided by the example comprises the following steps:
1g/L of an aqueous solution of polyethylene oxide and 1g/L of an aqueous solution of polyacrylic acid are mixed according to a mass ratio of 7:1 to obtain the liquid preparation with the concentration of 1 g/L.
Example 2
The copper-molybdenum-lead ore flotation flocculant provided by the embodiment is a liquid preparation with the concentration of 1g/L, and the active ingredients of the liquid preparation are polyethylene oxide and sodium polyacrylate; the mass ratio of polyethylene oxide to sodium polyacrylate is 5:1, the weight average molecular weight of the polyethylene oxide was 360000.
The preparation method of the copper-molybdenum-lead ore flotation flocculant provided by the example comprises the following steps:
1g/L of an aqueous solution of polyethylene oxide and 1g/L of an aqueous solution of polyacrylic acid are mixed according to a mass ratio of 5:1 to obtain the liquid preparation with the concentration of 1 g/L.
Comparative example 1
The flocculant provided in this comparative example is an aqueous solution of polyethylene oxide at a concentration of 1 g/L.
Test examples
The copper-lead separation tailings are taken as ore feeding, the composition analysis results of the copper-lead separation tailings are shown in table 1, and the screening analysis results are shown in table 2.
TABLE 1
TABLE 2
Taking copper-lead separation tailings as ore feeding, grinding in a mill for 3min, adding water, stirring to obtain ore pulp, and regulating the pH value of the ore pulp to 9; adding sodium hexametaphosphate into the ore pulp with the pH value adjusted, stirring for 2min, adding copper-molybdenum-lead ore flotation flocculant of the embodiment 1 with different dosages, stirring for 5min, adding diesel oil, stirring for 2min, and finally adding BK204, and uniformly mixing; and (3) carrying out primary roughing operation on the uniformly mixed ore pulp, wherein the roughing operation time is 6min, and obtaining concentrate and tailings. The flow of flocculation flotation is shown in figure 1 and the specific test results are shown in table 3.
Wherein, the dosage of the sodium hexametaphosphate relative to the ore feeding is 500g/t;
the amounts of copper molybdenum lead ore flotation flocculant of example 1 relative to feed based on solids content are shown in table 3;
diesel oil at 300g/t relative to the feed;
BK204 was 40g/t relative to feed.
TABLE 3 Table 3
As can be seen from Table 3, by adding the copper molybdenum lead ore flotation flocculant of example 1 of the present invention, the floatability of molybdenum is greatly increased, and when the addition amount of the copper molybdenum lead ore flotation flocculant of example 1 is 20g/t, the recovery rate is improved by 20%, and the grade of molybdenum in the flotation tailings is reduced from 0.61% to 0.27%.
Taking copper-lead separation tailings as ore feeding, grinding in a mill for 3min, adding water, stirring to obtain ore pulp, and regulating the pH value of the ore pulp to 9; adding sodium hexametaphosphate into the ore pulp with the pH value adjusted, stirring for 2min, adding copper-molybdenum-lead ore flotation flocculating agents of the embodiment 2 with different dosages, stirring for 5min, adding diesel oil, stirring for 2min, and finally adding BK204, and uniformly mixing; and (3) carrying out primary roughing operation on the uniformly mixed ore pulp, wherein the roughing operation time is 6min, and obtaining concentrate and tailings. The specific test results are shown in Table 3.
Wherein, the dosage of the sodium hexametaphosphate relative to the ore feeding is 1000g/t;
the amounts of copper molybdenum lead ore flotation flocculant of example 2 relative to feed based on solids content are shown in table 4;
the consumption of diesel oil relative to the ore feeding is 300g/t;
the BK204 was used in an amount of 40g/t relative to the feed.
TABLE 4 Table 4
As can be seen from Table 4, the copper-molybdenum-lead ore flotation flocculant of example 2 is adopted, and the dosage of the dispersant sodium hexametaphosphate is properly increased, and the recovery rate of molybdenum of the copper-molybdenum-lead ore flotation flocculant of example 2 can reach 86.87% under the condition of lower dosage (10 g/t).
Taking copper-lead separation tailings as ore feeding, grinding in a mill for 3min, adding water, stirring to obtain ore pulp, and regulating the pH value of the ore pulp to 9; adding sodium hexametaphosphate into the ore pulp with the pH value adjusted, stirring for 2min, adding flocculating agents of comparative example 1 with different dosages, stirring for 5min, and then adding AP and BK204, and uniformly mixing; carrying out primary roughing operation on the well mixed ore pulp to obtain rough concentrate and tailings; adding BK511 into the obtained rough concentrate, stirring for 2min, adding diesel oil, and stirring for 2min to obtain concentrate and middling. The flow of flocculation flotation is shown in figure 2 and the specific test results are shown in table 5.
Wherein, the dosage of the sodium hexametaphosphate relative to the ore feeding is 500g/t;
the amounts of flocculant of comparative example 1 relative to the feed ore are shown in Table 5, based on the solid content;
the dosage of the AP relative to ore feeding is 300g/t;
the BK204 is 40g/t relative to the feeding amount;
the BK511 relative to the feeding amount is 1000g/t;
the diesel oil was used in an amount of 150g/t relative to the feed.
TABLE 5
As can be seen from table 5, the recovery rate of molybdenum increased with the increase of the flocculant amount, and the sum of the recovery rates of concentrate and middlings increased from about 74% to about 80%, which is higher than the control group without flocculant (recovery rate of about 66%) in table 3, but lower than the effect of using the copper molybdenum lead ore flotation flocculants of examples 1 and 2, and higher amounts of flocculants were required.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (9)
1. The copper-molybdenum-lead ore flotation flocculant is characterized by comprising polyethylene oxide and sodium polyacrylate, wherein the mass ratio of the polyethylene oxide to the sodium polyacrylate is 1-15: 1, a step of;
the copper-molybdenum-lead ore flotation flocculant is a liquid preparation;
in the liquid preparation, the concentration of the flotation flocculant is 0.5-1.5 g/L.
2. The copper molybdenum lead ore flotation flocculant according to claim 1, wherein the mass ratio of the polyethylene oxide to the sodium polyacrylate is 5-7: 1.
3. the copper molybdenum lead ore flotation flocculant according to claim 1, wherein the weight average molecular weight of the polyethylene oxide is equal to or greater than 50000.
4. A method for preparing a copper molybdenum lead ore flotation flocculant according to any one of claims 1 to 3 wherein the components are mixed uniformly.
5. A flocculation flotation method, characterized in that the copper molybdenum lead ore flotation flocculant according to any one of claims 1 to 3 is added to a pulp.
6. The flocculation flotation process according to claim 5, wherein the pulp has a pH of 7.5 to 10.5.
7. The flocculation flotation process according to claim 6, wherein the mineral content in the pulp is between 5wt% and 20wt%; in the minerals, the content of mineral particles with the granularity less than or equal to 600 meshes is 35-70 wt%;
and/or, the content of molybdenum in the ore pulp is 0.15-5 wt% and the content of copper is 0.1-20 wt%.
8. The flocculation flotation process according to claim 7, wherein the mass ratio of the copper molybdenum lead ore flotation flocculant to the ore is 0.00001 to 0.00005 in terms of solid content: 1.
9. the flocculation flotation process according to claim 5, comprising the steps of:
(A) Regulating the pH value of the ore pulp to 7.5-10.5;
(B) Sequentially adding at least three of a dispersing agent, a copper-molybdenum-lead ore flotation flocculant, an inhibitor, a collector and a foaming agent into the ore pulp with the pH value adjusted, and uniformly mixing;
(C) And (3) carrying out flotation on the pulp after uniform mixing to obtain concentrate and tailings.
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| CN202210312838.9A CN114589012B (en) | 2022-03-28 | 2022-03-28 | Copper-molybdenum-lead ore flotation flocculant, preparation method thereof and flocculation flotation method |
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| CN202210312838.9A CN114589012B (en) | 2022-03-28 | 2022-03-28 | Copper-molybdenum-lead ore flotation flocculant, preparation method thereof and flocculation flotation method |
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| CN114589012A CN114589012A (en) | 2022-06-07 |
| CN114589012B true CN114589012B (en) | 2023-09-05 |
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