CN111841876A - Method for segmented recycling of copper-tin polymetallic ore beneficiation wastewater - Google Patents
Method for segmented recycling of copper-tin polymetallic ore beneficiation wastewater Download PDFInfo
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- CN111841876A CN111841876A CN202010689244.0A CN202010689244A CN111841876A CN 111841876 A CN111841876 A CN 111841876A CN 202010689244 A CN202010689244 A CN 202010689244A CN 111841876 A CN111841876 A CN 111841876A
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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
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
Abstract
The invention relates to a method for recycling copper-tin polymetallic ore beneficiation wastewater in sections, which comprises the following steps; s1: introducing materials; s2: recycling tailings; s3: classifying the processes; in the step S1, clear water, iron tailings and centrifugal tailings concentration overflow water and shaking table tungsten-tin tailings concentration overflow water are included, and in the step S3, medicament preparation operation, ore grinding operation, copper flotation operation, tungsten-tin flotation operation, fluorite flotation operation, sulfur flotation operation, iron magnetic separation operation, tungsten-tin centrifugal operation and tungsten-tin shaking table operation are included. The invention has the advantages of improving the reuse rate of the beneficiation wastewater, reducing the use amount of clear water in a beneficiation plant, reducing the amount of discharged water, reducing the environmental protection pressure and the environmental pollution, protecting the water resource and saving the water cost, and performing research, transformation and application of direct reuse of partial wastewater by section through systematic investigation and analysis of the wastewater production and water quality conditions in the beneficiation process, greatly reducing the wastewater discharge amount and simultaneously reducing the beneficiation cost.
Description
Technical Field
The invention relates to the technical field of copper-tin polymetallic ore beneficiation, in particular to a method for recycling copper-tin polymetallic ore beneficiation wastewater in a segmented manner.
Background
The method is a common method for froth flotation, has large water consumption, generates a large amount of toxic and harmful wastewater containing metal ions, organic matters, beneficiation reagents and the like, and brings serious economic burden to enterprises if the toxic and harmful wastewater is thoroughly treated and discharged after reaching the standard. The water for mineral processing production has different requirements on water quality indexes according to different minerals and production flows.
Because the useful components of the raw ore are more, the production process flow is long, the types and the dosage of the added medicaments are more, the clear water consumption is large, and the tungsten-tin recovery process is combined by flotation and gravity separation, the clear water consumption is very large, and the generated mineral separation wastewater can reach the standard and be discharged after being treated, thereby increasing great burden for enterprises.
Disclosure of Invention
The invention aims to provide a method for recycling copper-tin polymetallic ore beneficiation wastewater in a segmented manner, and aims to solve the problems that the useful components of raw ores are more, the production process flow is long, the types of added medicaments are more, the dosage is large, the clear water consumption is large, the tungsten-tin recovery process is combined through flotation and reselection, the clear water consumption is large, the generated beneficiation wastewater can reach the standard after treatment, and the enterprise is greatly burdened.
In order to achieve the purpose, the invention provides the following technical scheme: a method for recycling copper-tin polymetallic ore beneficiation wastewater in a segmented manner comprises the following steps:
s1: introducing materials;
s2: recycling tailings;
s3: and (5) flow classification operation.
Preferably, the S1 comprises clear water, iron tailings, centrifugal tailings concentration overflow water and shaking table tungsten-tin tailings concentration overflow water.
Preferably, S3 includes a chemical preparation operation, an ore grinding operation, a copper flotation operation, a tungsten-tin flotation operation, a fluorite flotation operation, a sulfur flotation operation, an iron magnetic separation operation, a tungsten-tin centrifugation operation, and a tungsten-tin shaker operation.
Preferably, the centrifugal tailings are sequentially returned to 1#A phi 24m concentration tank is concentrated together with the iron tailings and then enters tungsten-tin flotation operation; and (4) feeding the tungsten-tin flotation tailings into a shaking table for operation to obtain shaking table tungsten-tin concentrate.
Preferably, the beneficiation process is complex, and the process is a flotation-gravity separation combination, which inevitably causes huge water consumption in production.
Preferably, the beneficiation reagent comprises one or more of organic and inorganic compounds such as zinc sulfate, sodium sulfite, Z-200 (thionocarbamate), BK205 (an alcohol foaming agent), sodium humate, copper sulfate, butyl xanthate, sodium carbonate, water glass, aluminum sulfate, lead nitrate, caustic soda, BK413 (a hydroximic acid collecting agent), BK411 (tributyl phosphate), BK410 (an oleic acid collecting agent) and the like.
Preferably, the tungsten-tin middlings of the shaking table enter a thick mud bucket, the tungsten-tin middlings enter a stirring mill after being concentrated and are ground again, and products of the stirring mill return to the shaking table for operation; tungsten tin shaking table tailings entering 2#A phi 24m concentration tank enters fluorite flotation operation after concentration, and is divided into primary roughing (flotation column), five times of fine concentration and primary fine scavenging to obtain fluorite concentrate; and (4) feeding the fluorite roughing tailings and the fine tailings into a tailing pond.
Preferably, the concentrated overflow water of the ferromagnetic tailings is mainly recycled for sulfur flotation operation and iron magnetic separation operation.
Preferably, the concentration overflow water of the tailings reselected by the tungsten-tin shaker is mainly reused for tungsten-tin shaker operation and tin centrifugation operation, and the return water is reused for magnetic separation, centrifugation, shaker operation and sulfur flotation operation.
Preferably, the wastewater is collected in sections, and the two parts of the concentration overflow of the ferromagnetic tailings and the concentration overflow of the tailings of the tungsten-tin table are used as backwater.
Compared with the prior art, the invention has the beneficial effects of improving the reuse rate of the beneficiation wastewater, reducing the use amount of clear water in a beneficiation plant, reducing the amount of discharged water, lightening the environmental protection pressure and environmental pollution, protecting the water resource and saving the water cost, and by carrying out the research and the transformation application of the segmented direct reuse of partial wastewater through the systematic investigation and analysis of the beneficiation process wastewater production and the water quality condition, the wastewater discharge amount is greatly reduced, and the beneficiation cost is reduced.
Drawings
FIG. 1 is a schematic diagram of the sectional reuse water trend of the wastewater of the concentrating mill;
fig. 2 is a flow chart of water quality in a concentrating mill.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, the present invention provides a technical solution: a method for recycling copper-tin polymetallic ore beneficiation wastewater in a segmented manner comprises the following steps:
s1: introducing materials;
s2: recycling tailings;
s3: and (5) flow classification operation.
In the invention;
further, step S1 includes clear water, iron tailings and centrifugal tailings concentration overflow water and shaking table tungsten-tin tailings concentration overflow water.
Further, step S3 includes a chemical preparation operation, an ore grinding operation, a copper flotation operation, a tungsten-tin flotation operation, a fluorite flotation operation, a sulfur flotation operation, an iron magnetic separation operation, a tungsten-tin centrifugation operation, and a tungsten-tin shaker operation.
Further, the centrifugal tailings are sequentially returned to 1#A phi 24m concentration tank is concentrated together with the iron tailings and then enters tungsten-tin flotation operation; and (4) feeding the tungsten-tin flotation tailings into a shaking table for operation to obtain shaking table tungsten-tin concentrate.
Furthermore, the mineral separation process is complex, and the process is a combination of flotation and gravity separation, which inevitably causes huge water consumption in production; can carry out the treatment of useful components of raw ores, reduce the production process flow and facilitate the addition of medicament types.
Further, the beneficiation reagent comprises one or more of organic and inorganic compounds such as zinc sulfate, sodium sulfite, Z-200 (thionocarbamate), BK205 (an alcohol foaming agent), sodium humate, copper sulfate, butyl xanthate, sodium carbonate, water glass, aluminum sulfate, lead nitrate, caustic soda, BK413 (a hydroximic acid collecting agent), BK411 (tributyl phosphate), BK410 (an oleic acid collecting agent) and the like; the consumption of clean water is reduced greatly, and the tungsten-tin recovery process is combined by flotation and gravity separation, so that the produced beneficiation wastewater can reach the standard and be discharged after being treated.
Further, feeding the tungsten-tin middlings of the shaking table into a thick mud bucket, feeding the concentrated tungsten-tin middlings into a stirring mill for re-grinding, and returning stirring mill products to the shaking table for operation; tungsten tin shaking table tailings entering 2 #A phi 24m concentration tank enters fluorite flotation operation after concentration, and is divided into primary roughing (flotation column), five times of fine concentration and primary fine scavenging to obtain fluorite concentrate; and (4) feeding the fluorite roughing tailings and the fine tailings into a tailing pond.
Further, the concentrated overflow water of the ferromagnetic separation tailings is mainly recycled for sulfur flotation operation and ferromagnetic separation operation; the treated ore amount is 432t/d, ores enter a fine ore bin after three-section one-closed circuit crushing, raw ores in the fine ore bin are ground by two sections of two closed circuits, the grinding fineness is-200 meshes and accounts for 85%, and ore grinding product ore pulp enters copper preferential flotation operation.
Further, the concentrated overflow water of the gravity tailings of the tungsten tin shaker is mainly reused for tungsten tin shaker operation and tin centrifugation operation, and the return water is reused for magnetic separation, centrifugation, shaker operation and sulfur flotation operation; the concentrated overflow water of the iron magnetic separation tailings is mainly reused for sulfur flotation operation and iron magnetic separation operation, and the concentrated overflow water of the gravity separation tailings of the tungsten tin shaker is mainly reused for tungsten tin shaker operation and tin centrifugation operation.
Further, collecting waste water in sections, and enabling the concentrated overflow of the ferromagnetic tailings and the concentrated overflow of the tailings of the tungsten-tin table to be used as return water; if all ore dressing process production water all use the clear water, then the water consumption is huge, must produce a large amount of ore dressing waste water, still must pass through the treatment of waste water treatment station before discharging and just can reach standard and discharge, this obviously can bring a huge economic burden and increased the environmental protection hidden danger for the enterprise, through to ore dressing flow waste water production and quality of water condition system investigation and analysis now, carry out the research of the direct retrieval and utilization of partial waste water segmentation and reform transform and apply, the waste water discharge amount has been reduced by a wide margin, has reduced the ore dressing cost simultaneously.
The specific implementation method of the sectional recycling method of the copper-tin polymetallic ore beneficiation wastewater comprises the following steps:
on the basis of keeping the original ore dressing process, the generation point and the amount of wastewater of each ore dressing wastewater are analyzed, and the ferromagnetic tailings are concentrated and overflow (673 m) through the segmented collection of the wastewater3/d) and Wolfram tailing concentrate overflow (2364 m)3The two parts are used as backwater, the concentrated overflow water of the ferromagnetic tailings is mainly reused for sulfur flotation operation and ferromagnetic separation operation, and the concentrated overflow water of the gravity tailings of the tungsten-tin table concentrator is mainly reused for tungsten-tin table concentrator operation and tin centrifugation operation; the backwater is recycled for magnetic separation, centrifugation, table shaking operation and sulfur flotation operation, experiments verify that the influence of the backwater on the sulfur flotation operation is verified, and the experiments show that the dosage of CuSO4 and the dosage of butyl sodium yellow in the sulfur flotation operation are respectively reduced by 20 percent after the backwater is used. The floating concentration of each operation is controlled, the clean water and the recycling amount of each point are adjusted, and the production water, the clean water and the backwater amount of each point in the whole process are shown in the table.
The results of the use amount of the production water, the clear water and the return water at each point after the sectional recycling
Therefore, the beneficiation wastewater realizes the reutilization of most of water, the raw ore treatment capacity is 432t/d, and the return water is 2891m 3D, the dosage of the clear water is 3917m3D is reduced to 1026m3D (i.e. from 9.07 m)3Clean water/ton, crude ore down to 2.38m3Clean water/ton, raw ore), the water entering the tailing pond is 3647m3D is reduced to 902m3D, mineral processing waste water residual amount 146m3D, waste waterThe reuse rate is 73.81 percent. Meanwhile, the usage amount of CuSO4 and butyl sodium yellow drug in sulfur flotation operation is respectively reduced by 20 percent, the economic benefit and the social benefit are obvious, and the clear water consumption of the process flow is 3917m3/d, wherein the grinding operation is 559m3Copper flotation work 135m3Sulfur flotation 107m3D, ferromagnetic selection 333m3Tin flotation operation 127m3189 m/d, tin centrifugation3D, operation of tin shaker 2262m3D Fluorite job 205m3/d。
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (10)
1. The method for recycling the copper-tin polymetallic ore beneficiation wastewater in a segmented manner is characterized by comprising the following steps of:
S1: introducing materials;
s2: recycling tailings;
s3: and (5) flow classification operation.
2. The method for segmented recycling of copper-tin polymetallic ore beneficiation wastewater according to claim 1, characterized by comprising the following steps: and the step S1 comprises clear water, iron tailings, centrifugal tailings concentration overflow water and shaking table tungsten-tin tailings concentration overflow water.
3. The method for segmented recycling of copper-tin polymetallic ore beneficiation wastewater according to claim 1, characterized by comprising the following steps: the step S3 includes a chemical preparation operation, an ore grinding operation, a copper flotation operation, a tungsten-tin flotation operation, a fluorite flotation operation, a sulfur flotation operation, an iron magnetic separation operation, a tungsten-tin centrifugation operation, and a tungsten-tin shaker operation.
4. The method of claim 3The method for recycling the copper-tin polymetallic ore beneficiation wastewater in sections is characterized by comprising the following steps: the centrifugal tailings are sequentially returned to 1#And (3) concentrating the tailings with the diameter of 24m in a concentration tank, and then performing tungsten-tin flotation operation, wherein the tailings subjected to the tungsten-tin flotation enter a shaking table operation to obtain shaking table tungsten-tin concentrate.
5. The method for segmented recycling of copper-tin polymetallic ore beneficiation wastewater according to claim 3, characterized by comprising the following steps: the mineral separation process is complex, and the process is a combination of flotation and gravity separation, which inevitably results in huge water consumption in production.
6. The method for segmented recycling of copper-tin polymetallic ore beneficiation wastewater according to claim 3, characterized by comprising the following steps: the beneficiation reagent comprises one or more of organic and inorganic compounds such as zinc sulfate, sodium sulfite, Z-200 (thionocarbamate), BK205 (an alcohol foaming agent), sodium humate, copper sulfate, butyl xanthate, sodium carbonate, water glass, aluminum sulfate, lead nitrate, caustic soda, BK413 (a hydroximic acid collecting agent), BK411 (tributyl phosphate), BK410 (an oleic acid collecting agent) and the like.
7. The method for segmented recycling of copper-tin polymetallic ore beneficiation wastewater according to claim 3, characterized by comprising the following steps: the tungsten-tin middling of the shaking table enters a thick mud bucket, the tungsten-tin middling enters a stirring mill after being concentrated and is ground again, the stirring mill product returns to the shaking table for operation, and the tungsten-tin shaking table tailings enter 2#A phi 24m concentration tank enters fluorite flotation operation after concentration, and is divided into primary roughing (flotation column), five times of fine concentration and primary fine scavenging to obtain fluorite concentrate; and the fluorite roughing tailings and the fine tailings enter a tailing pond.
8. The method for segmented recycling of copper-tin polymetallic ore beneficiation wastewater according to claim 3, characterized by comprising the following steps: the iron magnetic separation tailing concentration overflow water is mainly reused for sulfur flotation operation and iron magnetic separation operation.
9. The method for segmented recycling of copper-tin polymetallic ore beneficiation wastewater according to claim 3, characterized by comprising the following steps: the concentration overflow water of the gravity tailings of the tungsten-tin shaking table is mainly reused for tungsten-tin shaking table operation and tin centrifugation operation, and the return water is reused for magnetic separation, centrifugation, shaking table operation and sulfur flotation operation.
10. The method for segmented recycling of copper-tin polymetallic ore beneficiation wastewater according to claim 3, characterized by comprising the following steps: and the wastewater is collected in sections, so that two parts, namely the concentration overflow of the ferromagnetic tailings and the concentration overflow of the tailings of the tungsten-tin table, are used as backwater.
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