CN110790434B - Method for simultaneously reducing concentrations of copper ions, zinc ions and lead ions in tailing wastewater generated by mineral separation and recycling - Google Patents

Method for simultaneously reducing concentrations of copper ions, zinc ions and lead ions in tailing wastewater generated by mineral separation and recycling Download PDF

Info

Publication number
CN110790434B
CN110790434B CN201911211543.7A CN201911211543A CN110790434B CN 110790434 B CN110790434 B CN 110790434B CN 201911211543 A CN201911211543 A CN 201911211543A CN 110790434 B CN110790434 B CN 110790434B
Authority
CN
China
Prior art keywords
ions
wastewater
zinc
lead
tailing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201911211543.7A
Other languages
Chinese (zh)
Other versions
CN110790434A (en
Inventor
覃朝科
张超兰
张静
罗栋源
林婧
周治德
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Nonferrous Metal Guilin Geology and Mining Co Ltd
Original Assignee
China Nonferrous Metal Guilin Geology and Mining Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Nonferrous Metal Guilin Geology and Mining Co Ltd filed Critical China Nonferrous Metal Guilin Geology and Mining Co Ltd
Priority to CN201911211543.7A priority Critical patent/CN110790434B/en
Publication of CN110790434A publication Critical patent/CN110790434A/en
Application granted granted Critical
Publication of CN110790434B publication Critical patent/CN110790434B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/58Treatment of water, waste water, or sewage by removing specified dissolved compounds
    • C02F1/62Heavy metal compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/30Treatment of water, waste water, or sewage by irradiation
    • C02F1/32Treatment of water, waste water, or sewage by irradiation with ultraviolet light
    • C02F1/325Irradiation devices or lamp constructions
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/10Inorganic compounds
    • C02F2101/20Heavy metals or heavy metal compounds

Abstract

The invention discloses a method for simultaneously reducing the concentration of copper ions, zinc ions and lead ions in tailing wastewater of beneficiation and reuse. When the concentration of copper ions, zinc ions and lead ions in the tailing wastewater is below 20mg/L, adding xanthate, black medicine and sulfur and nitrogen type beneficiation collecting agents into the tailing wastewater, and controlling the concentration of the beneficiation collecting agents in the tailing wastewater to be 5-100 mg/L; by adopting a VUV irradiation method, the VUV radiation intensity is 180-280 mu W/cm2, the power is 10-200W, the wavelength is 185nm and 254nm, the irradiation time is 10-180 min, and S is promoted to be analyzed by the collecting agent2‑,S2‑And Cu2+、Zn2+、Pb2+The generated metal sulfide precipitates are combined, the concentrations of copper ions, zinc ions and lead ions in the tailings water for beneficiation recycling are reduced, and the whole recycling of the tailings wastewater for beneficiation is realized without influencing the beneficiation indexes.

Description

Method for simultaneously reducing concentrations of copper ions, zinc ions and lead ions in tailing wastewater generated by mineral separation and recycling
Technical Field
The invention belongs to the technical field of treatment and recycling of beneficiation wastewater, and particularly relates to a method for simultaneously reducing the concentration of active metal ions in beneficiation recycled tailing wastewater.
Background
The production amount of mineral processing wastewater in China is huge, wherein the tailing wastewater accounts for more than 80% of the mineral processing wastewater, and if the tailing wastewater is directly recycled, copper ions (Cu) in the wastewater are generated2+) Zinc ion (Zn)2+) Lead ion (Pb)2+) Heavy metal ions which play a role in activation or inhibition can cause the deterioration of the separation environment, have great influence on the mineral separation index, and cause the reduction of the grade of the concentrate, the increase of the content of impurities, the reduction of the recovery rate and the like. Due to the fact thatTherefore, the tailing wastewater is treated when being recycled. Common beneficiation wastewater treatment methods include a precipitation method, an adsorption method, a membrane treatment method, an electric flocculation method, an artificial wetland and the like, wherein the precipitation method is most commonly used, but the precipitation method has the problems of large sludge generation amount and easy secondary pollution, and other methods have complicated process flows or need to add a large amount of different treatment agents, so the cost is high, and beneficiation enterprises are difficult to bear.
Wherein the sulfidation precipitation method comprises adding a sulfidizing agent (such as Na)2S) effective removal of the active metal Cu from the solution2+、Zn2+、Pb2 +And the like, but the vulcanizing agent has the same great influence on the beneficiation indexes, the concentration of the vulcanizing agent needs to be accurately controlled, and the vulcanizing agent is not popularized due to the difficulty in controlling the addition amount. The invention discloses a method for treating and recycling copper-zinc sulfide ore dressing wastewater, which aims at the copper-zinc sulfide ore dressing wastewater, adopts a mode of combining a sulfide precipitation method and a coagulating precipitation method, effectively reduces the contents of components such as solid suspended matters, heavy metal ions, residual organic agents and the like in the copper-zinc ore dressing wastewater, and realizes resource utilization and zero discharge of the ore dressing wastewater.
At present, no report about adding a beneficiation collecting agent into recycled tailing wastewater, treating the tailing wastewater by degrading the collecting agent by using a low-pressure Vacuum Ultraviolet (VUV) lamp and simultaneously reducing the concentration of active metal ions in the beneficiation recycled tailing wastewater is found.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method for simultaneously reducing the concentrations of copper ions, zinc ions and lead ions in the beneficiation recycling tailing wastewater.
In order to solve the technical problem, the technical scheme adopted by the invention is as follows:
a method for simultaneously reducing the concentrations of copper ions, zinc ions and lead ions in tailing wastewater of ore dressing recycling comprises the following steps:
the method comprises the following steps:
and adding a certain amount of mineral separation collecting agent into the tailing wastewater, and stirring to ensure that the mineral separation collecting agent is fully and uniformly distributed in the wastewater.
Step two:
after the first step is finished, degrading the mineral separation collecting agent in the tailing wastewater by a VUV irradiation method to promote the collecting agent to analyze S2-; S2-And Cu2+、Zn2+、Pb2+The combination generates sulfide metal deposition, the deposition is less, and the concentration of active metal ions is reduced.
Step three:
and after the second step is finished, the tailing wastewater is directly recycled in the mineral separation production without filtration and sedimentation.
Cu in the tailing wastewater in the step I2+、Zn2+、Pb2+The ion concentration is below 20 mg/L;
the ore dressing collector in the first step is a dressing agent for yellow chemicals, black chemicals and sulfur and nitrogen for collecting target minerals in the flotation process, preferably ethyl yellow chemical [ C ]3H5NaOS2]Butyl xanthate [ C ]4H9OCSSNa]Dibutoxyfop [ (C)4H9O)2PSSNH4]Aniline black drug [ (RNH) PSSH]Ethylthio-nitrogen [ (C)2H5)2NCSSNa·3H2O]One or more of the medicaments.
In the first step, after the mineral separation collecting agent is added, the concentration of the mineral separation collecting agent in the tailing wastewater is 5-100 mg/L;
in the second step, the VUV radiation method is: wrapping the quartz tube for the low-pressure vacuum ultraviolet lamp, and placing the quartz tube into the wastewater by a manual or mechanical method, wherein the radiation intensity is 180-2The power is 10-200W, and the wavelength is 185nm and 254 nm; the irradiation time is 10-180 min.
The invention has the following beneficial effects:
1. cu in swertia mine wastewater2+、Zn2+、Pb2+When the ion concentration is below 20mg/L, the selection used in the inventionThe ore collecting agent is a medicament used in the ore dressing process, and VUV radiation is adopted to degrade S separated out by the ore dressing collecting agent2-And Cu2+、Zn2+、Pb2+The reaction is rapid, the removal rate of Cu2+, Zn2+ and Pb2+ ions in the tailing wastewater is more than 94 percent, and the simultaneous removal of Cu is achieved2+、Zn2+、Pb2+The amount of ions and precipitates is small.
2. The process flow is simple, the mineral separation collecting agent is easy to obtain, and the influence of the content of the mineral separation collecting agent in the recycled tailing wastewater on mineral separation indexes is easy to control.
Drawings
FIG. 1 is a flow chart of a treatment process for reducing the concentration of active metal ions in mill run recycled tailing wastewater according to the invention;
FIG. 2 is a flow chart of a tailings wastewater recycling beneficiation test.
Detailed Description
The present invention is further illustrated by, but is not limited to, the following examples.
Example 1
Referring to the process flow of fig. 1, the components of the lead-zinc tailing wastewater are firstly detected, and the results are shown in table 1. Adding 10 percent of butyl xanthate (C) into 1000mL of lead-zinc ore tailing wastewater4H9OCSSNa) aqueous solution is 2mL, the content of butyl xanthate in the tailing wastewater is detected to be 24mg/L, and the mixture is stirred uniformly; wrapping the quartz tube for the low-pressure vacuum ultraviolet lamp, manually putting the quartz tube into wastewater, degrading the mineral separation collecting agent in the tailing wastewater by VUV irradiation, controlling the VUV radiation intensity to be 180-280 mu W/cm2, controlling the wavelength to be 185nm and 254nm, controlling the power of the low-pressure vacuum ultraviolet lamp to be 40W, and irradiating for 30 min. The supernatant was collected after filtration and examined, and the results are shown in Table 1. Therefore, after the lead-zinc mine tailing wastewater is treated by the technical scheme of the invention, the removal rates of active metal ions of copper, lead and zinc in the mine tailing wastewater are all over 94 percent, copper is not detected, the lead concentration is reduced from 2.441mg/L to 0.10mg/L, the zinc concentration is reduced from 3.13mg/L to 0.16mg/L, and the treatment effect is good.
TABLE 1 lead-zinc mine tailing wastewater and detection results after treatment
Figure DEST_PATH_IMAGE001
Example 2
Taking 1000mL of copper-lead-zinc mine tailing wastewater with detection results shown in Table 2, adding 6mL of butyl xanthate aqueous solution with the mass concentration of 5%, and stirring, wherein the content of butyl xanthate in the tailing wastewater is detected to be 37 mg/L; meanwhile, 2mL of a 5% ammonium dimonium nigrcide aqueous solution is added and uniformly stirred, and the content of the ammonium dimonium nigrcide in the tailing wastewater is about 10 mg/L. Wrapping the quartz tube for the low-pressure vacuum ultraviolet lamp, manually putting the quartz tube into wastewater, degrading the beneficiation collecting agent in the tailing wastewater by VUV irradiation, controlling the VUV radiation intensity to be 180-280 mu W/cm2, the wavelength to be 185nm and 254nm, controlling the power of the low-pressure vacuum ultraviolet lamp to be 60W, irradiating for 180 min, filtering, taking clear liquid for detection, and obtaining the result shown in Table 2. Therefore, after the copper-lead-zinc mine tailing wastewater is treated by the technical scheme of the invention, the removal rate of active metal ions such as copper, lead and zinc in the mine tailing wastewater is over 97 percent, copper is not detected, the lead concentration is reduced from 7.31mg/L to 0.06mg/L, the zinc concentration is reduced from 5.25mg/L to 0.12mg/L, and the treatment effect is good.
Table 2 copper lead zinc ore dressing tailing wastewater and detection results after treatment
Figure 94627DEST_PATH_IMAGE002
Example 3
Carrying out a lead-zinc ore beneficiation test according to the figure 2, wherein the beneficiation test flow is that raw ore is ground to the required granularity by an ore grinding 1, enters a lead roughing 2, and is subjected to a lead dressing 3 and a scavenging 4 to obtain lead concentrate; the ore pulp after lead separation enters zinc roughing 5 for zinc separation, and zinc concentration 6 and zinc scavenging 7 are carried out to obtain zinc concentrate; and filtering 8 the tailing slurry after zinc separation to obtain tailings and tailing water.
Sampling, adding anti preparation lime 0.8g into lead-zinc raw ore with the mass of 1000g and the granularity of less than 2mm, and grinding by a grinding machine 1 until the granularity of less than 0.074mm accounts for 70%; 0.2g of zinc sulfate, 0.2g of butyl xanthate serving as a collecting agent and 0.045g of 2# oil serving as a foaming agent are gradually added into the ore pulp 11, and the mixture enters a lead roughing 2 to carry out anti zinc lead separation; the foam of the lead roughing 2 is lead roughing concentrate 21, and the lead roughing concentrate enters a lead concentration 3 for concentration to obtain lead concentrate 31; anti preparation zinc sulfate 0.1g, collector butyl xanthate 0.05g and foaming agent 2# oil 0.02g are added into tailing slurry 22 of lead roughing 2, lead scavenging 4 is carried out, and the obtained scavenging concentrate 41 and tailings 32 of lead dressing 3 are returned to lead roughing 2 together.
Adding 0.15g of activating agent copper sulfate, 0.06g of collecting agent butyl xanthate and 0.045g of foaming agent No. 2 oil into tailing slurry of the lead scavenging machine 4, feeding the tailing slurry into a zinc roughing machine 5 for zinc roughing, and feeding the obtained zinc rough concentrate 51 into a zinc fine concentration machine 6 for fine concentration to obtain zinc concentrate 61; adding 0.05g of activator copper sulfate and 0.03g of collector butyl xanthate into tailing slurry 52 of the zinc roughing 5, entering a zinc scavenging operation 7, and returning the obtained scavenging concentrate 71 and tailings 62 of the zinc concentrating 6 to the zinc roughing 5; the tailing slurry 72 from the zinc scavenging 7 is filtered 8 and the filtrate 82 is the tailing water.
In the test 1, the water consumption condition is that untreated tailing water is adopted completely, namely the tailing water is directly recycled;
the water consumption condition of the test 2 is that the tailing water treated by the method is adopted; the tailing water treatment steps are as follows: adding 3mL of a butyl xanthate aqueous solution with the mass concentration of 5% into 1000mL of tailing wastewater, enabling the content of butyl xanthate in the tailing wastewater to reach 15mg/L, uniformly stirring, wrapping a low-pressure vacuum ultraviolet lamp by using a quartz tube, manually putting the wrapped low-pressure vacuum ultraviolet lamp into the wastewater, degrading a mineral separation collecting agent in the tailing wastewater by VUV irradiation, controlling the VUV radiation intensity to be 180-280 mu W/cm2, controlling the wavelength to be 185nm and 254nm, controlling the power of the low-pressure vacuum ultraviolet lamp to be 60W, and irradiating for 40 min.
Test 3 the water conditions were all clear water.
The lead-zinc ore beneficiation tests are carried out according to the beneficiation test flow of the figure 2 in the test 1, the test 2 and the test 3. And drying the concentrates and the tailings, weighing, calculating the yield, sampling, and sending to a laboratory for grade test. The results of the experiment are shown in table 3.
TABLE 3 grade and recovery of flotation products in lead-zinc ore beneficiation test
Figure DEST_PATH_IMAGE003
The result of mineral separation test shows that the concentration of active metal ions in the lead-zinc tailing wastewater treated by the technical scheme provided by the invention is greatly reduced, the lead-zinc tailing wastewater is reused in lead-zinc separation, and the recovery rate and the grade of flotation products are both close to those of clear water. The technical scheme provided by the invention for simultaneously reducing the concentration of the active metal ions in the tailing wastewater generated by mineral separation and reuse can effectively solve the problem of recycling the tailing wastewater generated by mineral separation production.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.

Claims (2)

1. A method for simultaneously reducing the concentrations of copper ions, zinc ions and lead ions in tailing wastewater of ore dressing recycling is characterized by comprising the following steps:
the method comprises the following steps:
when the concentration of copper ions, zinc ions and lead ions in the tailing wastewater is below 20mg/L, adding a mineral separation collecting agent into the tailing wastewater, stirring, and controlling the concentration of the mineral separation collecting agent in the tailing wastewater to be 5-100 mg/L;
step two:
after the first step is finished, degrading the mineral separation collecting agent in the tailing wastewater by adopting a VUV irradiation method, and controlling the VUV radiation intensity to be 180-2The power is 10-200W, the wavelength is 185nm and 254nm, and the irradiation time is 10-180 min; promote the collecting agent to separate out S2-, S2-And Cu2+、Zn2+、Pb2+The combination produces a precipitate of the metal sulfide with a simultaneous reduction of Cu2+、Zn2+、Pb2+Concentration;
step three:
and after the second step is finished, the tailing wastewater is directly recycled in the mineral separation production without filtration and sedimentation.
2. The method according to claim 1, wherein the beneficiation collector is one or more of an ethyl xanthate, a butyl ammonium nigride, an aniline nigride, and an ethidium agent.
CN201911211543.7A 2019-12-02 2019-12-02 Method for simultaneously reducing concentrations of copper ions, zinc ions and lead ions in tailing wastewater generated by mineral separation and recycling Active CN110790434B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911211543.7A CN110790434B (en) 2019-12-02 2019-12-02 Method for simultaneously reducing concentrations of copper ions, zinc ions and lead ions in tailing wastewater generated by mineral separation and recycling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911211543.7A CN110790434B (en) 2019-12-02 2019-12-02 Method for simultaneously reducing concentrations of copper ions, zinc ions and lead ions in tailing wastewater generated by mineral separation and recycling

Publications (2)

Publication Number Publication Date
CN110790434A CN110790434A (en) 2020-02-14
CN110790434B true CN110790434B (en) 2021-12-31

Family

ID=69447109

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911211543.7A Active CN110790434B (en) 2019-12-02 2019-12-02 Method for simultaneously reducing concentrations of copper ions, zinc ions and lead ions in tailing wastewater generated by mineral separation and recycling

Country Status (1)

Country Link
CN (1) CN110790434B (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2799526Y (en) * 2005-04-12 2006-07-26 彭云龙 Magnetic lightcatalyzed integral sewage regeneration and utilization device
CN101037268A (en) * 2007-04-20 2007-09-19 合肥工业大学 Method for restoring mine entironment
KR20100042785A (en) * 2008-10-17 2010-04-27 한국원자력연구원 Method of decomposing antibacterial agents by vacuum ultraviolet
DE102009041143A1 (en) * 2009-09-14 2011-03-24 Frederick Simon Oosthuizen Processing mining waste water comprises separating sulfur metal ions and sulfate from water, reducing sulfur metal ions and sulfate to sulfide and removing the sulfide from waste water, and oxidizing the waste water loaded with iron salts
EP2451747A2 (en) * 2009-04-30 2012-05-16 Loïra Purifying device and method for elimination of xenobiotics in water
CN105800796A (en) * 2016-05-10 2016-07-27 昆明理工大学 Floatation wastewater biological treatment process

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2799526Y (en) * 2005-04-12 2006-07-26 彭云龙 Magnetic lightcatalyzed integral sewage regeneration and utilization device
CN101037268A (en) * 2007-04-20 2007-09-19 合肥工业大学 Method for restoring mine entironment
KR20100042785A (en) * 2008-10-17 2010-04-27 한국원자력연구원 Method of decomposing antibacterial agents by vacuum ultraviolet
EP2451747A2 (en) * 2009-04-30 2012-05-16 Loïra Purifying device and method for elimination of xenobiotics in water
DE102009041143A1 (en) * 2009-09-14 2011-03-24 Frederick Simon Oosthuizen Processing mining waste water comprises separating sulfur metal ions and sulfate from water, reducing sulfur metal ions and sulfate to sulfide and removing the sulfide from waste water, and oxidizing the waste water loaded with iron salts
CN105800796A (en) * 2016-05-10 2016-07-27 昆明理工大学 Floatation wastewater biological treatment process

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
UV185+254 nm photolysis of typical thiol collectors: decomposition efficiency, mineralization and formation of sulfur byproducts;Pingfeng Fu等;《Royal Society open science》;20190522;第6卷(第5期);第1-11页 *

Also Published As

Publication number Publication date
CN110790434A (en) 2020-02-14

Similar Documents

Publication Publication Date Title
JP3241374B2 (en) Wastewater treatment method using improved recirculation of high density sludge
US5698107A (en) Treatment for acid mine drainage
CN102001734B (en) Heavy metal settling agent for treating mercury-containing wastewater
CN107352696B (en) Flotation tungsten ore tailing wastewater recycling process
CN102936068A (en) In-process circular and comprehensive recovery technology for mineral processing wastewater of tin-lead-zinc polymetallic sulphide ores
CN102030445B (en) Four-step method for processing and recycling tin ore floatation wastewater
CN106977009B (en) Rapid treatment and recycling method of spodumene flotation tailing water
CN111018194A (en) Treatment and reuse method of nickel-molybdenum ore beneficiation wastewater
CN111495581A (en) Beneficiation method for recycling lead-zinc ore beneficiation treatment wastewater
CN111018085B (en) Treatment method of xanthate-containing heavy metal flotation wastewater
CN104355356A (en) Sewage treatment agent as well as preparation method and application thereof
CN102502934A (en) Treatment chemical for lead-zinc flotation tailing wastewater
CN204079666U (en) One is applied to shale gas recirculation water circulation and stress treatment unit
CN105948201A (en) Preparation method of beneficiation wastewater metal trapping agent
CN109574263A (en) A kind of processing of fluorite ore-dressing wastewater and reuse method
CN102826695A (en) Scheelite beneficiation wastewater treatment technique
CN110734185A (en) sulfonated mud wastewater treatment method and system
CN110790434B (en) Method for simultaneously reducing concentrations of copper ions, zinc ions and lead ions in tailing wastewater generated by mineral separation and recycling
CN1562794A (en) Method for cyclic utilizing mineral dressing waste water from sulphur ore of lead-zinc
CN109174471A (en) A kind of automatically cleaning return water processing method
CN106145446B (en) A kind of more metal ore dressing complexity waste water immediate processing methods of lead zinc sulphur
CN110759531A (en) Quality-based treatment-grading recycling method for beneficiation wastewater of tungsten-zinc polymetallic ores
Li et al. Recovery of mercury and lead from wastewater by sulfide precipitation-flotation
CN102718347B (en) Method for treating multi-metal-contained wastewater in process of crushing and sorting waste circuit board
CN109072334B (en) Method and process arrangement for removing cations from water

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant