CN111940146B - Low-temperature-resistant zinc oxide ore flotation composite reagent and preparation method and application thereof - Google Patents
Low-temperature-resistant zinc oxide ore flotation composite reagent and preparation method and application thereof Download PDFInfo
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- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/002—Inorganic compounds
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- 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
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- B03B9/00—General arrangement of separating plant, e.g. flow sheets
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- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/004—Organic compounds
- B03D1/01—Organic compounds containing nitrogen
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- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/018—Mixtures of inorganic and organic compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/02—Froth-flotation processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/02—Collectors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2203/00—Specified materials treated by the flotation agents; specified applications
- B03D2203/02—Ores
- B03D2203/04—Non-sulfide ores
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Abstract
The invention relates to a low-temperature-resistant zinc oxide ore flotation composite reagent and a preparation method and application thereof, wherein the composite reagent comprises a composite regulator and a composite collector, wherein the composite regulator is prepared from sodium hexametaphosphate, starch and sodium humate in a weight ratio of (5-7: 3-6): 1-3, mixing; the composite collecting agent is formed by mixing octadecylamine, glacial acetic acid, sodium benzyloxyhydroxamate and waste engine oil according to the weight ratio of 5-8: 1-3. The two composite beneficiation reagents are used, desliming is not needed in the flotation process, so that the recovery of fine-fraction zinc oxide is enhanced, and the beneficiation recovery rate of zinc oxide ores can be improved by 5-15%.
Description
Technical Field
The invention relates to the field of mineral processing and comprehensive utilization of mineral resource ores, in particular to a low-temperature-resistant zinc oxide ore flotation composite agent and a preparation method and application thereof.
Background
Zinc oxide is negatively affected by the high slime content and soluble calcium and magnesium ions. In the traditional desliming flotation process of zinc oxide ores, the desliming amount is very difficult to accurately control, the production is extremely unstable, the interference of slime on the zinc oxide flotation cannot be thoroughly eliminated, in addition, part of zinc oxide minerals are removed during desliming, the problems of low zinc oxide recovery rate, poor sorting index and the like are caused, in addition, the traditional beneficiation reagent needs higher operation temperature, the general temperature requirement is higher than 25 ℃, and the flotation operation cannot be carried out in areas with lower temperature or in winter (such as high-altitude mining areas in Yunnan).
Based on the defects of the traditional zinc oxide desliming flotation method, poor low-temperature flotation effect and the like, how to reduce desliming procedures by changing a flotation reagent system on the premise of basically not changing the existing flotation process, effectively save factory construction investment, reduce production and operation cost, improve the recovery rate of zinc oxide, ensure that the production process is easy to adjust and control, and has stable production indexes is a problem which is urgently needed to be solved at present.
Disclosure of Invention
In order to solve the technical problems, the invention provides a low-temperature-resistant zinc oxide ore flotation composite reagent, and a preparation method and application thereof, which can improve the recovery rate of zinc oxide ore.
The technical scheme of the invention is as follows:
the low-temperature-resistant zinc oxide ore flotation composite reagent comprises a composite regulator and a composite collecting agent, wherein the composite regulator is prepared from sodium hexametaphosphate, starch and sodium humate in a weight ratio of 5-7: 3-6: 1-3, mixing; the composite collecting agent is formed by mixing octadecylamine, glacial acetic acid, sodium benzyloxyhydroxamate and waste engine oil according to the weight ratio of 5-8: 1-3.
Further, the following is performed:
mixing sodium hexametaphosphate, starch and sodium humate according to the weight ratio of 5-7: 3-6: 1-3, stirring in a high-speed stirrer for about 10 minutes, wherein the high speed means that the rotating speed is more than 2000 rpm, and taking out the mixture to be the composite regulator;
heating 5-8 parts of octadecylamine and 5-8 parts of glacial acetic acid according to the weight ratio until the octadecylamine and the glacial acetic acid are dissolved; then adding 1-3 parts of waste engine oil into the dissolved solution, and ultrasonically stirring and emulsifying; and then adding 1-3 parts of sodium benzyloxyhydroxamate, reacting for 20 minutes, and cooling to normal temperature to obtain the composite collector.
Further, the octadecylamine and the glacial acetic acid are heated to 80-90 ℃ to be dissolved.
Further, the mixture was emulsified by ultrasonic agitation for about 5 minutes.
Further, sodium benzyloxyoximate was added and reacted for about 30 minutes.
The application of the low-temperature-resistant zinc oxide ore flotation composite reagent comprises the following steps:
grinding raw ore to-0.074 mm, wherein the ore pulp accounts for 75-95%, controlling the concentration of the ore pulp to be about 25%, and adding 100-800 g/t of a composite regulator at an overflow port of a grader, namely adding 800g of a medicament of one ton of ore, so that the composite regulator and the ore pulp fully react;
after the step (2) and the overflow process, adding an activating agent into the size mixing barrel to ensure that the reaction time of the activating agent in the ore pulp exceeds 5 minutes;
and (3) after the slurry mixing procedure, adding 200 g/t of composite collecting agent into the first roughing tank of the flotation machine for primary roughing, and carrying out two-time concentration on the obtained roughing product to obtain the qualified zinc oxide concentrate product.
Further, the activating agents are sodium sulfide and sodium carbonate, and the addition amount is 3000-6000g/t of sodium sulfide and 500-1500g/t of sodium carbonate.
Further, the raw ore is lead zinc oxide ore flotation tailings or zinc oxide ore.
A certain amount of waste engine oil is added, stirred and emulsified for 5 minutes by ultrasonic wave, so that the waste engine oil is fully dispersed and floated, and the problems of floating foam running out of a groove, difficult flowing of floating ore pulp and the like caused by foam stickiness in the flotation process can be effectively reduced.
Compared with the prior art, the invention has the following beneficial effects:
(1) the composite regulator and the composite collecting agent of the invention act synergistically together, the first of the two zinc oxide ore flotation agents is a composite regulator of a gangue mineral inhibitor, a fine mud zinc oxide carrier agglomerating agent and an unavoidable ion remover, and Ca in ore pulp is removed by the composite regulator2 +、Mg2 +The zinc oxide fine particles are selectively agglomerated by the unavoidable ions to form a new carrier, so that the zinc oxide fine particles can more easily act with a collecting agent, and the floating of the fine zinc oxide particles is increased; the second one is low temperature resistant zinc oxide composite collector, under the action of the composite collector, different kinds of beneficiation reagent generate synergistic effect, the low temperature flotation environment of zinc oxide is improved, the composite collector can be used at a low temperature of about 5 ℃, the floating of fine-grained zinc oxide ore is increased, the recovery rate of zinc flotation is improved, and meanwhile, the cost of the beneficiation reagent is reduced by 1/3.
(2) The composite reagent is added at a proper position, desliming is not needed in the process, the recovery of fine-grained zinc oxide is enhanced, the beneficiation recovery rate of zinc oxide ores is improved, the process is easy to adjust and control in the flotation process, flotation is not affected in a low-temperature environment, the indexes are stable, and the like, and the composite reagent is suitable for the beneficiation of various refractory zinc oxide ores.
(3) The invention reduces desliming process by changing the flotation reagent system on the premise of basically not changing the prior flotation process, can effectively save factory building investment and reduce production and operation cost, can also improve the recovery rate of zinc oxide, and has the advantages of easy adjustment and control of production process and stable production index.
Drawings
FIG. 1 is a schematic process flow diagram of zinc oxide flotation using the low temperature resistant zinc oxide ore flotation composite reagent 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. The examples do not specify particular techniques or conditions, and are performed according to the techniques or conditions described in the literature in the art or according to the product specifications. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available by purchase.
Example 1
The low-temperature-resistant zinc oxide ore flotation composite reagent comprises a composite regulator and a composite collector, wherein the composite regulator is formed by mixing sodium hexametaphosphate, starch and sodium humate according to a weight ratio of 5:3: 1; the composite collector is formed by mixing octadecylamine, glacial acetic acid, sodium benzoxyoxime and waste engine oil according to the weight ratio of 8:5:2: 1.
The preparation method of the low-temperature-resistant zinc oxide ore flotation composite reagent of the embodiment is carried out as follows:
mixing sodium hexametaphosphate, starch and sodium humate according to the weight ratio of 5:3:1, stirring in a high-speed stirrer for 10 minutes, and taking out the mixture which is a composite regulator and is recorded as KYS-1.
Heating 8 parts of octadecylamine and 5 parts of glacial acetic acid according to the weight ratio until the octadecylamine and the glacial acetic acid are dissolved; then adding 2 parts of waste engine oil into the dissolved solution, and ultrasonically stirring and emulsifying; and then adding 1 part of sodium benzyloxyhydroxamate, reacting, and cooling to normal temperature to obtain the composite collector which is marked as KYS-2.
The application of the low-temperature-resistant zinc oxide ore flotation composite reagent comprises the following steps:
the method comprises the following steps of (1) aiming at a certain zinc oxide ore in Yunnan, wherein main zinc oxide is heteropolar ore, a small amount of calamine is selected from Zn13.14%, the zinc oxidation rate is 90.14%, the ore grinding fineness is 75% when the ore grinding fineness is-0.074 mm, the raw ore grinding is 75% when the ore grinding fineness is-0.074 mm, the ore pulp concentration is controlled to be 25%, 1000g/t of sodium carbonate and 250 g/t of KYS-1 are added to an overflow port of a classifier, and the KYS-1 and the ore pulp are made to fully react.
And (2) adding 4000 g/t of activator sodium sulfide into the stirring barrel, wherein the reaction time of the sodium sulfide in the ore pulp is ensured to exceed 5 minutes.
And (3) adding 350g/t KYS-2 into a first roughing tank of a flotation machine, performing primary roughing, and performing two times of fine concentration, two times of scavenging and middling recleaning on a roughed product obtained by a conventional process to obtain a qualified zinc oxide concentrate product as shown in figure 1.
The obtained zinc oxide concentrate Zn is 39.16 percent, and the zinc recovery rate is 88.43 percent.
Example 2
The low-temperature-resistant zinc oxide ore flotation composite reagent comprises a composite regulator and a composite collector, wherein the composite regulator is formed by mixing sodium hexametaphosphate, starch and sodium humate according to a weight ratio of 6: 6: 3; the composite collector is formed by mixing octadecylamine, glacial acetic acid, sodium benzyloxyl and waste engine oil according to the weight ratio of 8: 8:2: 2.
The preparation method of the low temperature resistant zinc oxide ore flotation composite reagent of the embodiment is carried out as follows:
mixing sodium hexametaphosphate, starch and sodium humate according to the weight ratio of 6: 6:3, stirring the mixture in a high-speed stirrer for 10 minutes, and taking out the mixture which is a composite regulator and is marked as KYS-1.
Heating 8 parts of octadecylamine and 8 parts of glacial acetic acid according to the weight ratio until the octadecylamine and the glacial acetic acid are dissolved; then adding 2 parts of waste engine oil into the dissolved solution, and ultrasonically stirring and emulsifying; and then adding 2 parts of sodium benzyloxyhydroxamate, reacting, and cooling to normal temperature to obtain the composite collector which is marked as KYS-2.
The application of the low-temperature-resistant zinc oxide ore flotation composite reagent comprises the following steps:
aiming at certain lead-zinc oxide ore flotation tailings in Zhaotong of Yunnan, the main zinc minerals in the tailings are calamine and a small amount of hemimorphous ore, the zinc selection grade Zn is 4.92%, the zinc oxidation rate is 96.42%, the grinding fineness is-0.074 mm and accounts for 85%, the concentration of ore pulp is controlled to be 25%, and 500g/t and 300g/t of sodium carbonate KYS-1 are added at an overflow port of a classifier, so that the KYS-1 and the ore pulp fully react.
And (2) adding 5000g/t of activating agent sodium sulfide into the stirring barrel, wherein the reaction time of the sodium sulfide in the ore pulp is ensured to exceed 5 minutes.
And (3) adding 400g/t KYS-2 into a first roughing tank of a flotation machine, performing primary roughing, and performing two times of fine concentration, two times of scavenging and middling recleaning on a roughed product obtained by a conventional process to obtain a qualified zinc oxide concentrate product as shown in figure 1.
The obtained zinc oxide concentrate Zn is 31.33 percent, and the zinc recovery rate is 76.42 percent.
Example 3
The low-temperature-resistant zinc oxide ore flotation composite reagent comprises a composite regulator and a composite collector, wherein the composite regulator is formed by mixing sodium hexametaphosphate, starch and sodium humate according to a weight ratio of 7:6: 3; the composite collector is formed by mixing octadecylamine, glacial acetic acid, sodium benzoxyoxime and waste engine oil according to the weight ratio of 5:5:1: 1.
The preparation method of the low-temperature-resistant zinc oxide ore flotation composite reagent of the embodiment is carried out as follows:
mixing sodium hexametaphosphate, starch and sodium humate according to the weight ratio of 7:6:3, stirring in a high-speed stirrer for 10 minutes, and taking out a mixture which is a composite regulator and is recorded as KYS-1.
Heating 5 parts of octadecylamine and 5 parts of glacial acetic acid according to the weight ratio until the octadecylamine and the glacial acetic acid are dissolved; then adding 1 part of waste engine oil into the dissolved solution, and ultrasonically stirring and emulsifying; and then adding 1 part of sodium benzyloxyhydroxamate, reacting, and cooling to normal temperature to obtain the composite collector which is marked as KYS-2.
The application of the low-temperature-resistant zinc oxide ore flotation composite reagent comprises the following steps:
the method comprises the following steps of (1) aiming at some old zinc oxide ores in Yunnan, wherein zinc mainly is calamine and contains a large amount of iron sludge, the selected grade Zn is 8.92%, the zinc oxidation rate is 93.33%, the ore grinding fineness is 85% when the zinc oxide ores are ground to be 0.074mm, the ore pulp concentration is controlled to be 25%, and 1500g/t of sodium carbonate and 500g/t of KYS-1 are added to an overflow port of a classifier, so that the KYS-1 and the ore pulp are fully reacted.
And (2) adding 4500g/t of activating agent sodium sulfide into the stirring barrel, wherein the reaction time of the sodium sulfide in the ore pulp is ensured to exceed 5 minutes.
And (3) adding 550g/t KYS-2 into a first roughing tank of a flotation machine, performing primary roughing, and performing two times of fine concentration, two times of scavenging and middling recleaning on a roughed product obtained by a conventional process to obtain a qualified zinc oxide concentrate product as shown in figure 1.
The obtained zinc oxide concentrate Zn is 25.64 percent, and the zinc recovery rate is 81.43 percent.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. The application of the low-temperature-resistant zinc oxide ore flotation composite reagent is characterized in that: the medicament comprises a composite regulator and a composite collector, wherein the composite regulator is prepared from sodium hexametaphosphate, starch and sodium humate in a weight ratio of 5-7: 3-6: 1-3, mixing; the composite collecting agent is prepared from octadecylamine, glacial acetic acid, sodium benzoxyoxime and waste engine oil in a weight ratio of 5-8: 5-8: 1-3: 1-3, mixing;
mixing sodium hexametaphosphate, starch and sodium humate according to the weight ratio of 5-7: 3-6: 1-3, stirring in a high-speed stirrer for 10 minutes, wherein the high speed means that the rotating speed is more than 2000 rpm, and taking out the mixture to be the composite regulator;
heating 5-8 parts of octadecylamine and 5-8 parts of glacial acetic acid to 80-90 ℃ according to the weight ratio for dissolving; then adding 1-3 parts of waste engine oil into the dissolved solution, and ultrasonically stirring and emulsifying; then adding 1-3 parts of sodium benzyloxyhydroxamate, reacting for 20 minutes, and cooling to normal temperature to obtain a composite collecting agent;
the application comprises the following steps:
grinding raw ore to-0.074 mm, wherein the ore pulp accounts for 75-95%, controlling the concentration of the ore pulp to be 25%, and adding 100-800 g/t of a composite regulator into an overflow port of a classifier to enable the composite regulator to fully react with the ore pulp;
after the step (2) and the overflow process, adding an activating agent into the pulp mixing barrel to ensure that the reaction time of the activating agent in the ore pulp exceeds 5 minutes;
and (3) after the slurry mixing procedure, adding 200 g/t of composite collecting agent into the first rough concentration tank of the flotation machine, performing primary rough concentration, and performing two times of fine concentration on the obtained rough concentration product to obtain the qualified zinc oxide concentrate product.
2. Use according to claim 1, characterized in that: emulsifying for 5 minutes by ultrasonic stirring.
3. Use according to claim 1, characterized in that: sodium benzyloxyoximate was added and reacted for 30 minutes.
4. Use according to claim 1, characterized in that: the activating agents are sodium sulfide and sodium carbonate, and the addition amount is 3000-6000g/t of sodium sulfide and 500-1500g/t of sodium carbonate.
5. Use according to claim 1, characterized in that: the raw ore is lead zinc oxide ore flotation tailings or zinc oxide ore.
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| US4253614A (en) * | 1979-07-05 | 1981-03-03 | The New Jersey Zinc Company | Flotation of non-sulfide zinc materials |
| CN102489412A (en) * | 2011-12-26 | 2012-06-13 | 昆明理工大学 | Method for activating calamine in flotation process |
| CN102974446B (en) * | 2012-12-11 | 2015-04-01 | 中国地质科学院矿产综合利用研究所 | Oolitic hematite dressing method |
| CN103071596B (en) * | 2013-01-22 | 2014-07-30 | 昆明理工大学 | Method for recycling fine and superfine cassiterites from oxidized lode tin mud tailings |
| CN103240167B (en) * | 2013-04-27 | 2014-12-03 | 昆明冶金研究院 | Lead and zinc separating method for high-oxidation-rate low-grade lead-zinc oxide ores |
| CN105689150B (en) * | 2016-04-15 | 2018-07-06 | 中南大学 | A kind of lead-zinc oxide ore flotation inhibitor and its application |
| CN109482352B (en) * | 2018-09-28 | 2021-03-02 | 昆明理工大学 | Iron zinc oxide ore beneficiation method based on sulfuric acid pre-activation |
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