CN111841876B - 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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- CN111841876B CN111841876B CN202010689244.0A CN202010689244A CN111841876B CN 111841876 B CN111841876 B CN 111841876B CN 202010689244 A CN202010689244 A CN 202010689244A CN 111841876 B CN111841876 B CN 111841876B
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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
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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 results in huge water consumption in production.
Preferably, the beneficiation reagent comprises one or more of zinc sulfate, sodium sulfite, Z-200 thionocarbamate, a BK205 foaming agent, sodium humate, copper sulfate, butyl xanthate, sodium carbonate, water glass, aluminum sulfate, lead nitrate, caustic soda, a BK413 collecting agent, BK411 tributyl phosphate, a BK410 oleic acid collecting agent, and organic and inorganic compounds.
Preferably, the shaking table tungsten-tin middling enters a thick mud bucket, after being concentrated, the concentrated tungsten-tin middling enters a stirring mill for re-grinding, and stirring mill products return to the shaking table for operation; tungsten tin shaking table tailings entering 2 # A phi 24m concentration tank, concentrating, and performing fluorite flotation operation, wherein the operation is divided into primary rough concentration, five times of fine concentration and one time of fine concentrationPerforming secondary 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 concentrated overflow water of the gravity tailings of the tungsten-tin table is mainly recycled for tungsten-tin table operation and tin centrifugation operation, and the return water is recycled for iron magnetic separation, tin centrifugation, tungsten-tin table operation and sulfur flotation operation.
Preferably, the wastewater is collected in sections, and the two parts of the iron magnetic separation tailing concentration overflow and the tungsten tin shaking table tailing concentration overflow are used as backwater.
Compared with the prior art, 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 environmental pollution, protecting the water resource and saving the water cost, and performing research, transformation and application of partial wastewater sectional direct reuse by systematically investigating and analyzing the wastewater production and water quality conditions in the beneficiation process, thereby greatly reducing the wastewater discharge amount and simultaneously reducing the beneficiation cost.
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 the water quality of 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 utility model;
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 table concentrator for operation to obtain table concentrator 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 zinc sulfate, sodium sulfite, Z-200 thionocarbamate, a BK205 foaming agent, sodium humate, copper sulfate, butyl xanthate, sodium carbonate, water glass, aluminum sulfate, lead nitrate, caustic soda, a BK413 collecting agent, BK411 tributyl phosphate, a BK410 oleic acid collecting agent and one or more of organic and inorganic compounds; 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 the flotation operation is divided into primary roughing, 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 in two-section two-closed circuit, 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 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 discharge up to standard, 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 analysis now, carry out the direct retrieval and utilization research of partial waste water segmentation and reform transform and apply, the waste water discharge amount has been reduced by a wide margin, the while has reduced the ore dressing cost.
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 wastewater 3 /d) and Wolfram tailing concentrate overflow (2364 m) 3 The two parts are used as backwater, the concentrated overflow water of the ferromagnetic tailings is mainly used for sulfur flotation operation and ferromagnetic selection operation, and the concentrated overflow water of the heavy tailings of the tungsten-tin table concentrator is mainly used 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 clear water and the return water at each point are adjusted by controlling the flotation concentration of each operationThe usage amount of the production water, the clear water and the backwater at each point of the whole process is 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 3 D, the dosage of clear water is 3917m 3 D is reduced to 1026m 3 D (i.e. from 9.07 m) 3 Clean water/ton, crude ore down to 2.38m 3 Clean water/ton, raw ore), the water entering the tailing pond is 3647m 3 D is reduced to 902m 3 D, mineral processing wastewater residual amount 146m 3 And d, the wastewater 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 3917m 3 /d, wherein the grinding operation is 559m 3 Copper flotation work 135m 3 Sulfur flotation 107m 3 D, ferromagnetic selection 333m 3 Tin flotation operation 127m 3 189 m/d, tin centrifugation 3 D, operation of tin shaker 2262m 3 D fluorite job 205m 3 /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 (5)
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: classifying the processes;
step S1 includes clear water, ferromagnetic selection operation tailings, tungsten-tin centrifugal operation tailings concentration overflow water and tungsten-tin shaking table operation tailings concentration overflow water;
step S3 sequentially comprises the steps of medicament preparation operation, ore grinding operation, copper flotation operation, sulfur flotation operation, iron magnetic separation operation, tungsten-tin flotation concentrate and tungsten-tin flotation tailings which respectively enter tungsten-tin centrifugal operation and tungsten-tin shaking table operation, and tungsten-tin shaking table tailings which enter fluorite flotation operation;
returning the tailings of tungsten-tin centrifugal operation to 1 # The phi 24m concentration tank is concentrated together with the ferromagnetic separation operation tailings and then enters tungsten-tin flotation operation, and the tungsten-tin flotation operation tailings enter tungsten-tin table operation to obtain tungsten-tin table operation concentrate;
the middlings in the tungsten-tin shaking table operation enter a thick mud bucket, the middlings are stirred, ground and reground after being concentrated, the products of stirring and grinding return to the tungsten-tin shaking table operation, and the tailings of the tungsten-tin shaking table enter a step 2 # A phi 24m concentration tank, concentrating, and then performing fluorite flotation operation, wherein the flotation operation comprises primary roughing, 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.
2. The method for segmented recycling of copper-tin polymetallic ore beneficiation wastewater according to claim 1, characterized by comprising the following steps: the beneficiation reagent comprises one or more of zinc sulfate, sodium sulfite, Z-200 thionocarbamate, a BK205 foaming agent, sodium humate, copper sulfate, butyl xanthate, sodium carbonate, water glass, aluminum sulfate, lead nitrate, caustic soda, a BK413 collecting agent, BK411 tributyl phosphate and a BK410 oleic acid collecting agent.
3. The method for segmented recycling of copper-tin polymetallic ore beneficiation wastewater according to claim 1, characterized by comprising the following steps: the concentrated overflow water of the tailings in the ferromagnetic separation operation is used for sulfur flotation operation and ferromagnetic separation operation.
4. The method for segmented recycling of copper-tin polymetallic ore beneficiation wastewater according to claim 1, characterized by comprising the following steps: the concentrated overflow water of the tailings of the tungsten-tin shaking table operation is used for the tungsten-tin shaking table operation and the tungsten-tin centrifugal operation.
5. The method for segmented recycling of copper-tin polymetallic ore beneficiation wastewater according to claim 1, characterized by comprising the following steps: and collecting waste water in sections, and taking two parts of ferromagnetic selection operation tailing concentration overflow and tungsten-tin table operation tailing concentration overflow as backwater.
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