CN115925164A - Treatment method of high-talc molybdenum ore beneficiation backwater - Google Patents
Treatment method of high-talc molybdenum ore beneficiation backwater Download PDFInfo
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- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 title claims abstract description 109
- 239000011733 molybdenum Substances 0.000 title claims abstract description 109
- 229910052750 molybdenum Inorganic materials 0.000 title claims abstract description 109
- 239000000454 talc Substances 0.000 title claims abstract description 86
- 229910052623 talc Inorganic materials 0.000 title claims abstract description 86
- 238000000034 method Methods 0.000 title claims abstract description 65
- 238000005456 ore beneficiation Methods 0.000 title claims description 20
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 51
- 239000011707 mineral Substances 0.000 claims abstract description 51
- 230000000844 anti-bacterial effect Effects 0.000 claims abstract description 49
- 239000003899 bactericide agent Substances 0.000 claims abstract description 49
- 230000000694 effects Effects 0.000 claims abstract description 34
- 230000003647 oxidation Effects 0.000 claims abstract description 27
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 27
- 239000000203 mixture Substances 0.000 claims abstract description 25
- 238000000926 separation method Methods 0.000 claims abstract description 24
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- 239000008394 flocculating agent Substances 0.000 claims abstract description 14
- 238000004062 sedimentation Methods 0.000 claims abstract description 8
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 17
- 229920000289 Polyquaternium Polymers 0.000 claims description 14
- 229920002503 polyoxyethylene-polyoxypropylene Polymers 0.000 claims description 14
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 12
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 claims description 12
- 229920002401 polyacrylamide Polymers 0.000 claims description 11
- GLDOVTGHNKAZLK-UHFFFAOYSA-N n-octadecyl alcohol Natural products CCCCCCCCCCCCCCCCCCO GLDOVTGHNKAZLK-UHFFFAOYSA-N 0.000 claims description 8
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 7
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 7
- 229940037003 alum Drugs 0.000 claims description 7
- 239000004571 lime Substances 0.000 claims description 7
- ZKQDCIXGCQPQNV-UHFFFAOYSA-N Calcium hypochlorite Chemical compound [Ca+2].Cl[O-].Cl[O-] ZKQDCIXGCQPQNV-UHFFFAOYSA-N 0.000 claims description 5
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 5
- 239000005708 Sodium hypochlorite Substances 0.000 claims description 5
- 229920000570 polyether Polymers 0.000 claims description 5
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims description 5
- 239000003153 chemical reaction reagent Substances 0.000 claims description 3
- 239000002283 diesel fuel Substances 0.000 claims description 3
- 239000003350 kerosene Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 49
- 235000019198 oils Nutrition 0.000 abstract description 35
- 238000005188 flotation Methods 0.000 abstract description 30
- 239000003795 chemical substances by application Substances 0.000 abstract description 24
- 239000012141 concentrate Substances 0.000 abstract description 18
- 239000010419 fine particle Substances 0.000 abstract description 17
- 230000002411 adverse Effects 0.000 abstract description 9
- 238000004945 emulsification Methods 0.000 abstract description 9
- 238000011084 recovery Methods 0.000 abstract description 9
- 230000002195 synergetic effect Effects 0.000 abstract description 9
- 230000008901 benefit Effects 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 235000019476 oil-water mixture Nutrition 0.000 abstract description 4
- 239000004094 surface-active agent Substances 0.000 abstract description 4
- 230000002776 aggregation Effects 0.000 abstract description 2
- 238000004220 aggregation Methods 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 22
- 238000012545 processing Methods 0.000 description 12
- 230000006872 improvement Effects 0.000 description 9
- 238000004064 recycling Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 239000002351 wastewater Substances 0.000 description 4
- WUUZKBJEUBFVMV-UHFFFAOYSA-N copper molybdenum Chemical compound [Cu].[Mo] WUUZKBJEUBFVMV-UHFFFAOYSA-N 0.000 description 3
- 239000003814 drug Substances 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- 238000005054 agglomeration Methods 0.000 description 2
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- 239000002245 particle Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 150000003863 ammonium salts Chemical group 0.000 description 1
- -1 and in step S2 Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000011033 desalting Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- GDVKFRBCXAPAQJ-UHFFFAOYSA-A dialuminum;hexamagnesium;carbonate;hexadecahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Al+3].[Al+3].[O-]C([O-])=O GDVKFRBCXAPAQJ-UHFFFAOYSA-A 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910001701 hydrotalcite Inorganic materials 0.000 description 1
- 229960001545 hydrotalcite Drugs 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052961 molybdenite Inorganic materials 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
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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
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- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention provides a method for treating mineral separation backwater of high-talc molybdenum ore, which comprises the steps of adding a mixture of an oxidation type bactericide and a demulsifier into a tailing pump pond for mineral separation of the high-talc molybdenum ore; and adding a flocculating agent at the outlet of the pipeline pump of the tailing pump pond, and obtaining the recyclable mineral separation backwater through the sedimentation effect of the tailing pond. The oxidized bactericide can reduce the electrostatic repulsion among the oil collecting agents, and is beneficial to the aggregation of the collecting agents; the collecting agent on the surface of the micro-fine particle mineral can be oxidized, the contact of the surface active substance of the demulsifier and the oil-water mixture is strengthened, and the emulsification effect of the demulsifier is promoted. Under the synergistic action of the oxidation type bactericide and the demulsifier, the invention achieves the effect of removing micro-fine particle minerals and oil collectors in the return water, improves the quality of the return water, eliminates the difficulty and adverse effect of return water returning operation on a molybdenum ore flotation process in the prior art, further improves the grade and the recovery rate of molybdenum concentrate obtained by flotation, and creates good economic benefit for enterprises.
Description
Technical Field
The invention relates to the technical field of beneficiation backwater treatment, in particular to a treatment method of beneficiation backwater of high-talc molybdenum ore.
Background
Due to the serious shortage of water resources and the requirement of environmental protection, the water used in the mineral separation needs to be returned to the mineral separation process for reuse, and has been paid more and more attention; the water returned for use is called return water or circulating water. In the talc type molybdenum ore flotation, as the crystal structures and floatability of talc and molybdenite are similar, the flotation separation difficulty is high, the talc is very easy to argillize in ore grinding, argillized gangue particles can generate larger surface energy, an ore mud cover is formed for useful minerals, the contact of a collecting agent and the useful minerals is prevented, the viscosity of ore pulp is too high, the aeration condition is poor, the flotation environment is disordered, the cover, the heterogeneous agglomeration and the self-agglomeration are easy to generate, the useful minerals, the argillized gangue particles and a flotation reagent enter the backwater, the difficulty in flotation and recovery of the molybdenum minerals is increased, the components in the backwater are complicated, and the recycling difficulty is increased.
Research proves that in the mineral separation process of talc molybdenum ore, one of the most important factors influencing the molybdenum loss rate in the talc removal operation is water quality. A large amount of substances such as micro-fine mineral, oil molybdenum collecting agent and the like are left in the backwater of the molybdenum ore; the micro-fine particle minerals have fine granularity and extremely low grade, and can easily cover the surface of coarse particle concentrate when the return water is recycled, thus seriously deteriorating the flotation effect; the oil molybdenum collecting agent has stable property and slow degradation rate, and can cause the loss rate of molybdenum in the operation of removing talc to be increased rapidly, thus causing the recovery rate of molybdenum selection operation to be low. Therefore, how to treat the high-talc molybdenum ore backwater has important significance for realizing high-efficiency flotation of molybdenum ore and improving the grade and recovery rate of molybdenum concentrate.
The invention patent (application No. CN 201510129430.8) discloses a process method and a device for recycling copper-molybdenum separation wastewater, wherein overflow water and filtered water in the copper-molybdenum separation process are collected in a water return tank in a centralized manner, residual chemicals which are not beneficial to copper-molybdenum separation are removed by adding activated carbon to adsorb flotation chemicals in the water return tank, and the residual chemicals are pressed into a water return pipe through a water pump beside the water return tank to be returned to a separation flotation operation for recycling; although the device realizes treatment of the return water and is used in the flotation again, in the flotation of the talc molybdenum ore, the types of the used medicaments are multiple, the medicaments are mutually influenced, the content of micro-fine particle minerals in the return water is high, and the adverse influence of the return water on the subsequent molybdenum selection operation is difficult to eliminate only by adopting the activated carbon for adsorption treatment. At present, no treatment method specially aiming at substances such as micro-fine mineral, oil molybdenum collector and the like in high-talc molybdenum ore backwater exists.
In view of the above, there is a need to design an improved method for treating the mineral processing backwater of the high-talc molybdenum ore, so as to solve the above problems.
Disclosure of Invention
The invention aims to provide a treatment method of high-talc molybdenum ore beneficiation backwater, which is characterized in that a mixture of an oxidation type bactericide and a demulsifier is added into a tailing pump pool of high-talc molybdenum ore beneficiation, and under the synergistic effect of the oxidation type bactericide and the demulsifier, the effect of removing micro-fine particle minerals and oil molybdenum collectors in the backwater is achieved, so that the adverse effect of the backwater on the subsequent molybdenum beneficiation operation is eliminated, and the grade and the recovery rate of molybdenum concentrate obtained by flotation are improved.
In order to realize the aim, the invention provides a method for treating mineral processing backwater of high-talc molybdenum ore, which comprises the following steps:
s1, adding a mixture of an oxidation type bactericide and a demulsifier into a tailing pump pool of a high-talc molybdenum ore beneficiation process; the addition amount of the mixture is 200-600 g/t; the mass ratio of the oxidation type bactericide to the demulsifier in the mixture is 1 (0.8-1.2);
s2, adding a flocculating agent at the outlet of the pipeline pump of the tailing pump pool, and obtaining the recyclable mineral separation backwater through the sedimentation effect of the tailing pool.
As a further improvement of the present invention, in step S1, the oxidation-type bactericide includes one of a hypochlorite bactericide or a polyquaternium bactericide.
As a further improvement of the invention, the oxidation-type bactericide is a polyquaternium bactericide, and the addition amount of the oxidation-type bactericide is 100-300 g/t.
As a further improvement of the present invention, in step S2, the flocculant includes one or more of polyacrylamide, lime, aluminum sulfate and alum.
As a further improvement of the invention, the flocculating agent is polyacrylamide, and the addition amount of the flocculating agent is 10-30 g/t.
As a further improvement of the invention, when the flocculating agent is one or more of lime, aluminum sulfate and alum, the addition amount is 500-3000 g/t.
As a further improvement of the invention, the hypochlorite bactericide comprises one or a mixture of two of sodium hypochlorite and calcium hypochlorite.
As a further improvement of the invention, in step S1, the demulsifier includes one or a mixture of two of polyoxyethylene polyoxypropylene octadecanol ether and polyoxyethylene polyoxypropylene polyether.
As a further improvement of the invention, the talc in the high talc molybdenum ore is 10-35% by mass percent.
As a further improvement of the present invention, in step S1, in the high-talc molybdenum ore beneficiation process, the adopted reagent includes an oil molybdenum collector; the oil molybdenum collector comprises one or a mixture of kerosene and diesel oil.
The invention has the beneficial effects that:
1. the invention provides a method for treating mineral processing backwater of high-talc molybdenum ore, which is characterized in that a mixture of an oxidation type bactericide and a demulsifier is added into a tailing pump pool of the high-talc molybdenum ore, a flocculating agent is added at an outlet of a pipeline pump of the tailing pump pool, and the mineral processing backwater capable of being recycled is obtained through the sedimentation effect of a tailing pool. Under the synergistic action of the oxidation type bactericide and the demulsifier, the invention achieves the effect of removing the micro-fine particle minerals and the oil molybdenum collecting agent in the return water, improves the quality of the return water, eliminates the difficulty and adverse effect of the return water returning operation on the molybdenum ore flotation process in the prior art, and further improves the grade and the recovery rate of the molybdenum concentrate obtained by flotation.
2. The oxidation type bactericide adopted by the invention not only can eliminate the influence of microorganisms in the returned water, so that the electrostatic repulsion among the oil collecting agents is reduced, the oil collecting agents are favorably gathered, and the emulsification effect of the demulsifier is promoted; in addition, the oil collecting agent is easy to attach to the surface of the micro-fine particle mineral, so that the emulsification of the collecting agent and the subsequent contact of the micro-fine particle mineral and the flocculating agent are influenced, the oxidized bactericide can oxidize the collecting agent on the surface of the micro-fine particle mineral, the contact of a surface active substance of the demulsifier and an oil-water mixture can be strengthened, and the emulsification effect of the demulsifier is further promoted. Therefore, the oxidation type bactericide and the demulsifier are mixed for use, and can play a role in synergistic enhancement, thereby improving the treatment effect on the oil collecting agent and the fine-particle minerals in the return water.
3. The treatment method of the mineral separation backwater of the high-talc molybdenum ore can eliminate the molybdenum collecting agent remaining in the backwater and cannot cause adverse effect on the subsequent molybdenum separation operation; after the obtained return water returns to the molybdenum ore flotation process again, the talc removal operation section is obtained to achieve the effect close to clear water, the molybdenum loss rate in the section is greatly reduced, the ore dressing index is effectively improved, and good economic benefits are created for enterprises.
4. The treatment method is simple and easy to implement, has no adverse interference on the normal high-talc molybdenum ore flotation process of the concentrating mill, is only operated at the positions of the tailings pump pool and the pipeline pump outlet, has the characteristics of high practicability, low cost and high universality, is suitable for the high-talc molybdenum ore flotation process of the existing concentrating mill, and provides a new method for treatment and recycling of the return water.
Drawings
Fig. 1 is a process flow chart of the treatment method of high-talc molybdenum ore beneficiation backwater of the present invention.
Fig. 2 is a process diagram of beneficiation backwater application obtained in embodiment 1 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 will be described in detail with reference to the accompanying drawings and specific embodiments.
It should be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and/or processing steps closely related to the aspects of the present invention are shown in the drawings, and other details not closely related to the present invention are omitted.
In addition, it is also to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
A treatment method of high-talc molybdenum ore beneficiation backwater comprises the following steps:
s1, adding a mixture of an oxidation type bactericide and a demulsifier into a tailing pump pool of a high-talc molybdenum ore beneficiation process; the addition amount of the mixture is 200-600 g/t; the mass ratio of the oxidation type bactericide to the demulsifier in the mixture is 1 (0.8-1.2);
s2, adding a flocculating agent at the outlet of the pipeline pump of the tailing pump pond, and obtaining recyclable mineral separation backwater through the sedimentation effect of the tailing pond.
In particular, the oxidizing sterilant includes one of a hypochlorite sterilant or a polyquaternium sterilant. The oxidation type bactericide adopted by the invention not only can eliminate the influence of microorganisms in the returned water, so that the electrostatic repulsion among the oil collecting agents is reduced, the oil collecting agents are favorably gathered, and the emulsification effect of the demulsifier is promoted; in addition, the oil collector is easy to attach to the surface of the micro-fine particle mineral, so that the emulsification of the collector and the subsequent contact of the micro-fine particle mineral and the flocculating agent are influenced, the oxidized bactericide can oxidize the collector on the surface of the micro-fine particle mineral, the contact of the surface active substance of the demulsifier and the oil-water mixture can be strengthened, and the emulsification effect of the demulsifier is further promoted. Therefore, the oxidation type bactericide and the demulsifier are mixed for use, and the synergistic enhancement effect can be achieved, so that the treatment effect on the oil collecting agent and the fine particle minerals in the backwater is improved.
Preferably, the oxidation-type bactericide is a polyquaternium bactericide, and the addition amount of the polyquaternium bactericide is 100-300 g/t. When the polyquaternium is used as the bactericide, the polyquaternium not only has the above function, but also has the function of emulsifying the oil collecting agent, so that the oil collecting agent in the backwater is further effectively broken.
In some embodiments, the hypochlorite bactericide comprises one or a mixture of two of sodium hypochlorite, calcium hypochlorite.
In some embodiments, the demulsifier comprises one or a mixture of polyoxyethylene polyoxypropylene stearyl ether and polyoxyethylene polyoxypropylene polyether.
It should be noted that in other fields, for example, in oil production plants or oil field wastewater, a demulsifier is usually used to reduce the interfacial tension of oil and water, convert organic oil-soluble salts into water-soluble salts, and make them easily enriched to form large droplets, so as to finally separate oil phase from water phase, complete oil-water separation of oil product, and achieve the purpose of desalting, dewatering and demulsification. However, the method is only suitable for treating wastewater with high oil content; in the field of backwater treatment of molybdenum ore dressing, the content of oil molybdenum collector is about 10ppm, which is hundreds to tens of thousands of times lower than that of waste water in oil fields and the like, and if a single demulsifier in the prior art is adopted, effective breaking is difficult to realize.
Specifically, in step S2, the flocculant includes one or more of polyacrylamide, lime, aluminum sulfate, and alum. When the flocculating agent is one or more of lime, aluminum sulfate and alum, the addition amount is 500-3000 g/t. The flocculating agent is polyacrylamide, and the addition amount of the flocculating agent is 10-30 g/t. The polyacrylamide is used as an organic flocculant, has high molecular weight and high flocculation effect, so that a good flocculation effect can be achieved by only adding a small amount of polyacrylamide.
The addition amount of the oxidizing bactericide, the demulsifier, the mixture of the two and the flocculant in g/t represents the tonnage of the tailing slurry corresponding to the gram of the additive.
The invention relates to a method for treating mineral separation backwater of high-talc molybdenum ore, which particularly aims at molybdenum ore with talc accounting for 10-35% of the high-talc molybdenum ore in percentage by mass; in the actual flotation process of the molybdenum ore, the adopted medicament comprises an oil molybdenum collector, and the oil molybdenum collector comprises one or a mixture of two of kerosene and diesel oil. The flotation of the high-talc molybdenum ore is influenced by the excessive oil molybdenum collecting agent in the reclaimed water, and the molybdenum loss rate is high when the talc is removed; the ore dressing plant usually controls the removal amount of the talc to the utmost extent, so that part of the talc enters a molybdenum flotation system, and the grade and the recovery rate of the final molybdenum concentrate are reduced to a certain extent; the invention solves the influence of backwater on the operation of removing the talc, so that the removing amount of the talc can be increased as much as possible in the flotation process, the influence of the talc on the molybdenum flotation is eliminated, and the final molybdenum concentrate grade and recovery rate can be effectively improved.
Referring to fig. 1, which is a process flow diagram of the method for treating high-talc molybdenum ore beneficiation backwater of the present invention, it can be seen that a mixture of an oxidation type bactericide and a demulsifier is added to a tailing pump pond of high-talc molybdenum ore beneficiation, a flocculant is added at an outlet of a pipeline pump of the tailing pump pond, and recyclable beneficiation backwater is obtained through sedimentation in the tailing pond; and the treated return water returns to the mineral separation process again for recycling. The treatment method is simple and easy to implement, has no adverse interference on the normal high-talc molybdenum ore flotation process of a dressing plant, is only operated at the outlet of a tailing pump pool and a pipeline pump thereof, has the characteristics of high practicability, low cost and high universality, is suitable for the high-talc molybdenum ore flotation process of the existing dressing plant, and provides a new method for the treatment and the recycling of the backwater.
Example 1
The embodiment provides a method for treating mineral processing backwater of high-talc molybdenum ore, which comprises the following steps:
s1, adding a mixture of polyquaternium and polyoxyethylene polyoxypropylene octadecanol ether into a tailing pump pond in the high-talc molybdenum ore beneficiation process, wherein the addition amount of the polyquaternium and the polyoxyethylene polyoxypropylene octadecanol ether is 300g/t;
s2, adding 20g/t of polyacrylamide at the outlet of a pipeline pump of the tailing pump pool, and obtaining recyclable mineral separation backwater through the sedimentation effect of a tailing pool;
and S3, using the beneficiation backwater obtained in the step S2 in the preliminary talc removal operation, wherein the specific flow is shown in FIG. 2.
Comparative example 1
Comparative example 1 the return water was not subjected to any treatment and was returned directly for use in the preliminary talc removal operation.
Comparative example 2
Comparative example 2 provides a method for treating mineral processing backwater of high-talc molybdenum ore, which is different from example 1 in that the treatment of step S1 is not performed, and the rest is substantially the same as example 1, and is not repeated herein.
Comparative example 3
Comparative example 3 provides a method for treating mineral processing backwater of high-talc molybdenum ore, which is different from example 1 in that in step S1, polyquaternium and polyoxyethylene polyoxypropylene octadecanol ether are separately and independently added to a tailing pump pond for treatment, and the rest is substantially the same as example 1, and will not be described again.
The influence of the mineral processing backwater on the molybdenum loss rate in the talc removal stage in the example 1 and the comparative examples 1 to 3 is detected, and the influence is compared with the target loss rate of the operation of removing the talc in advance by using the clean water, and the obtained results are shown in the following table.
TABLE 1 results of correlation test between example 1 and comparative examples 1 to 3
| Talc rough concentrate molybdenum grade (%) | Talc rough concentrate loss (%) | |
| Clean water | 0.032 | 1.33 |
| Example 1 | 0.033 | 1.49 |
| Comparative example 1 | 0.328 | 15.24 |
| Comparative example 2 | 0.263 | 13.47 |
| Comparative example 3 | 0.178 | 7.18 |
As can be seen from table 1, the backwater treated by the scheme of example 1 is returned to the pre-skimming operation of molybdenum ore flotation, and the molybdenum grade of the obtained talc rough concentrate and the talc rough concentrate loss rate are similar to those of the talc rough concentrate directly using clear water, so that the molybdenum loss rate is greatly reduced, and good economic benefits are created for enterprises. The return water utilization method of the comparative examples 1-2 has very high molybdenum grade and loss rate in the talc removal operation. In comparative example 3, the oxidation bactericide and the demulsifier are added separately, and although the molybdenum loss rate is reduced, the effect is still not ideal compared with the example 1 and the clean water group. The mixed addition mode of the oxidation type bactericide and the demulsifier has a synergistic effect, is beneficial to improving the quality of return water, and eliminates the adverse effect of the return water on the molybdenum ore flotation.
Example 2
The embodiment provides a method for treating mineral processing backwater of high-talc molybdenum ore, which is different from the method in embodiment 1 in that in step S1, sodium hypochlorite of 100g/t is used to replace polyquaternium, polyoxyethylene polyoxypropylene polyether of 250g/t is used to replace polyoxyethylene polyoxypropylene octadecanol ether, and in step S2, lime of 1000g/t is used to replace polyacrylamide; the rest is substantially the same as embodiment 1, and the description thereof is omitted.
Comparative example 4
Comparative example 4 provides a treatment method of mineral processing backwater of high-talc molybdenum ore, which is different from example 2 in that in step S1, sodium hypochlorite and polyoxyethylene polyoxypropylene polyether are separately and independently added to a tailing pump pond for treatment, and the rest is substantially the same as example 2, and will not be described again.
Example 3
The embodiment provides a method for treating beneficiation backwater of high-talc molybdenum ore, which is different from the method in embodiment 1 in that calcium hypochlorite is used for replacing polyquaternary ammonium salt and the addition amount of polyoxyethylene polyoxypropylene octadecanol ether is 100g/t in step S1, and alum at 2000g/t is used for replacing polyacrylamide in step S2; the rest is substantially the same as embodiment 1, and will not be described again.
Comparative example 5
Comparative example 5 provides a treatment method of mineral separation backwater of high-talc molybdenum ore, which is different from example 3 in that calcium hypochlorite and polyoxyethylene polyoxypropylene octadecanol ether are separately and independently added to a tailing pump pond for treatment in step S1, and the rest is substantially the same as example 3, and is not repeated herein.
The influence of the mineral processing backwater of the examples 2 to 3 and the comparative examples 4 to 5 on the molybdenum loss rate in the talc removal stage is detected, and the influence is compared with the target loss rate of the operation of removing the talc in advance by using the clean water, and the obtained results are shown in the following table.
Table 2 results of correlation tests of examples 2 to 3 and comparative examples 4 to 5
| Talc rough concentrate molybdenum grade (%) | Talc rough concentrate loss (%) | |
| Clean water | 0.032 | 1.33 |
| Example 2 | 0.042 | 1.89 |
| Examples3 | 0.035 | 1.53 |
| Comparative example 4 | 0.183 | 7.57 |
| Comparative example 5 | 0.196 | 8.45 |
As can be seen from Table 2, the mixed addition mode of the oxidation type bactericide and the demulsifier in the embodiment 2 and the embodiment 3 has the synergistic enhancement effect, and the molybdenum loss rate in the pre-hydrotalcite removal operation is reduced; in examples 1 to 3, the talc rough concentrate molybdenum grade and talc rough concentrate loss rate of example 1 were the lowest. And in the mode of separately adding the oxidation type bactericide and the demulsifier in the comparative examples 4 to 5, the loss rate of the talc rough concentrate is still over 7 percent.
In conclusion, the invention provides a method for treating high-talc molybdenum ore beneficiation backwater, which comprises the steps of adding a mixture of an oxidation type bactericide and a demulsifier into a tailing pump pond for high-talc molybdenum ore beneficiation, adding a flocculating agent at an outlet of a pipeline pump of the tailing pump pond, and obtaining recyclable beneficiation backwater through the sedimentation effect of a tailing pond. The oxidized bactericide can eliminate the influence of microorganisms in the reclaimed water, so that the electrostatic repulsion among the oil collecting agents is reduced, the oil collecting agents are favorably gathered, and the emulsification effect of the demulsifier is promoted; in addition, the oxidation type bactericide can oxidize the oil collecting agent on the surface of the micro-fine particle mineral, so that the contact of the surface active substance of the demulsifier and the oil-water mixture can be strengthened, and the emulsification effect of the demulsifier is further promoted. Therefore, the oxidation type bactericide and the demulsifier are mixed for use, and can play a role in synergistic enhancement, thereby improving the treatment effect on the oil collecting agent and the fine-particle minerals in the return water. Under the synergistic action of the oxidation type bactericide and the demulsifier, the invention achieves the effect of removing micro-fine particle minerals and oil molybdenum collectors in the return water, improves the quality of the return water, eliminates the difficulty and adverse effect of return water returning operation on a molybdenum ore flotation process in the prior art, further improves the grade and recovery rate of the molybdenum concentrate obtained by flotation, effectively improves the mineral separation index, and creates good economic benefit for enterprises.
Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the present invention.
Claims (10)
1. The treatment method of the mineral separation backwater of the high-talc molybdenum ore is characterized by comprising the following steps of:
s1, adding a mixture of an oxidation type bactericide and a demulsifier into a tailing pump pool of a high-talc molybdenum ore beneficiation process; the addition amount of the mixture is 200-600 g/t; the mass ratio of the oxidation type bactericide to the demulsifier in the mixture is 1 (0.8-1.2);
s2, adding a flocculating agent at the outlet of the pipeline pump of the tailing pump pool, and obtaining the recyclable mineral separation backwater through the sedimentation effect of the tailing pool.
2. The method for treating high-talc molybdenum ore beneficiation backwater according to claim 1, wherein in step S1, the oxidation type bactericide includes one of a hypochlorite bactericide or a polyquaternium bactericide.
3. The method for treating high-talc molybdenum ore beneficiation backwater according to claim 2, wherein the oxidation type bactericide is a polyquaternium bactericide, and the addition amount of the polyquaternium bactericide is 100-300 g/t.
4. The method for treating the beneficiation backwater of the high-talc molybdenum ore according to claim 1, wherein in the step S2, the flocculant comprises one or more of polyacrylamide, lime, aluminum sulfate and alum.
5. The method for treating high-talc molybdenum ore beneficiation backwater according to claim 4, wherein the flocculant is polyacrylamide, and the addition amount of the flocculant is 10-30 g/t.
6. The method for treating high-talc molybdenum ore beneficiation backwater according to claim 4, wherein when the flocculant is one or more of lime, aluminum sulfate and alum, the addition amount is 500-3000 g/t.
7. The method for treating the beneficiation backwater of the high-talc molybdenum ore according to claim 2, wherein the hypochlorite bactericide comprises one or a mixture of two of sodium hypochlorite and calcium hypochlorite.
8. The method for treating the beneficiation backwater of the high-talc molybdenum ore according to claim 1, wherein in the step S1, the demulsifier comprises one or a mixture of two of polyoxyethylene polyoxypropylene octadecanol ether and polyoxyethylene polyoxypropylene polyether.
9. The method for treating the beneficiation backwater of the high-talc molybdenum ore according to claim 1, wherein talc in the high-talc molybdenum ore is 10% to 35% by mass percent.
10. The method for treating high-talc molybdenum ore beneficiation backwater according to claim 1, wherein in the step S1, in the high-talc molybdenum ore beneficiation process, the adopted reagent comprises an oil molybdenum collector; the oil molybdenum collector comprises one or a mixture of kerosene and diesel oil.
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