CN113373309A - Process for recovering zinc from gold cyanide mud acid pickling waste liquid - Google Patents
Process for recovering zinc from gold cyanide mud acid pickling waste liquid Download PDFInfo
- Publication number
- CN113373309A CN113373309A CN202110519695.4A CN202110519695A CN113373309A CN 113373309 A CN113373309 A CN 113373309A CN 202110519695 A CN202110519695 A CN 202110519695A CN 113373309 A CN113373309 A CN 113373309A
- Authority
- CN
- China
- Prior art keywords
- zinc
- waste liquid
- sludge
- acid
- pickling waste
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 43
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 229910052725 zinc Inorganic materials 0.000 title claims abstract description 41
- 239000011701 zinc Substances 0.000 title claims abstract description 41
- 239000002699 waste material Substances 0.000 title claims abstract description 37
- 238000005554 pickling Methods 0.000 title claims abstract description 35
- 239000007788 liquid Substances 0.000 title claims abstract description 33
- 239000002253 acid Substances 0.000 title claims abstract description 25
- 230000008569 process Effects 0.000 title claims abstract description 22
- IZLAVFWQHMDDGK-UHFFFAOYSA-N gold(1+);cyanide Chemical compound [Au+].N#[C-] IZLAVFWQHMDDGK-UHFFFAOYSA-N 0.000 title claims description 13
- 239000010802 sludge Substances 0.000 claims abstract description 42
- 238000002386 leaching Methods 0.000 claims abstract description 30
- 229910052751 metal Inorganic materials 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims abstract description 9
- 150000002739 metals Chemical class 0.000 claims abstract description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 27
- 239000003795 chemical substances by application Substances 0.000 claims description 20
- 229910052759 nickel Inorganic materials 0.000 claims description 15
- 238000005406 washing Methods 0.000 claims description 15
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 12
- 239000011268 mixed slurry Substances 0.000 claims description 12
- 239000012074 organic phase Substances 0.000 claims description 12
- 238000005086 pumping Methods 0.000 claims description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 229910052802 copper Inorganic materials 0.000 claims description 10
- 239000010949 copper Substances 0.000 claims description 10
- 238000000605 extraction Methods 0.000 claims description 10
- 229910017052 cobalt Inorganic materials 0.000 claims description 9
- 239000010941 cobalt Substances 0.000 claims description 9
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 7
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 6
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 6
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 6
- 239000003463 adsorbent Substances 0.000 claims description 6
- 239000003350 kerosene Substances 0.000 claims description 6
- 239000004571 lime Substances 0.000 claims description 6
- 239000008267 milk Substances 0.000 claims description 6
- 210000004080 milk Anatomy 0.000 claims description 6
- 235000013336 milk Nutrition 0.000 claims description 6
- 239000011259 mixed solution Substances 0.000 claims description 6
- 239000002904 solvent Substances 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 229910052804 chromium Inorganic materials 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 4
- 229910052737 gold Inorganic materials 0.000 claims description 4
- 239000010931 gold Substances 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 235000021110 pickles Nutrition 0.000 claims description 4
- 241000228212 Aspergillus Species 0.000 claims description 3
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 3
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 claims description 3
- 241000228143 Penicillium Species 0.000 claims description 3
- 241000223259 Trichoderma Species 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- QUXFOKCUIZCKGS-UHFFFAOYSA-N bis(2,4,4-trimethylpentyl)phosphinic acid Chemical compound CC(C)(C)CC(C)CP(O)(=O)CC(C)CC(C)(C)C QUXFOKCUIZCKGS-UHFFFAOYSA-N 0.000 claims description 3
- 239000001110 calcium chloride Substances 0.000 claims description 3
- 235000011148 calcium chloride Nutrition 0.000 claims description 3
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 3
- 150000001879 copper Chemical class 0.000 claims description 3
- 229910001447 ferric ion Inorganic materials 0.000 claims description 3
- 239000000706 filtrate Substances 0.000 claims description 3
- 239000002244 precipitate Substances 0.000 claims description 3
- -1 saccharide sodium phosphate Chemical class 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000011780 sodium chloride Substances 0.000 claims description 3
- 239000001488 sodium phosphate Substances 0.000 claims description 3
- 229910000162 sodium phosphate Inorganic materials 0.000 claims description 3
- 239000002562 thickening agent Substances 0.000 claims description 3
- 150000003751 zinc Chemical class 0.000 claims description 3
- 239000002351 wastewater Substances 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 5
- 230000036541 health Effects 0.000 abstract description 4
- 235000013305 food Nutrition 0.000 abstract description 2
- 231100000086 high toxicity Toxicity 0.000 abstract description 2
- 230000002503 metabolic effect Effects 0.000 abstract description 2
- MXZVHYUSLJAVOE-UHFFFAOYSA-N gold(3+);tricyanide Chemical compound [Au+3].N#[C-].N#[C-].N#[C-] MXZVHYUSLJAVOE-UHFFFAOYSA-N 0.000 abstract 1
- 230000002688 persistence Effects 0.000 abstract 1
- 229910001385 heavy metal Inorganic materials 0.000 description 12
- 238000004064 recycling Methods 0.000 description 12
- 239000004568 cement Substances 0.000 description 11
- 238000007711 solidification Methods 0.000 description 7
- 230000008023 solidification Effects 0.000 description 7
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000011160 research Methods 0.000 description 5
- 239000011651 chromium Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 238000003723 Smelting Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000010881 fly ash Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- ZOOODBUHSVUZEM-UHFFFAOYSA-N ethoxymethanedithioic acid Chemical compound CCOC(S)=S ZOOODBUHSVUZEM-UHFFFAOYSA-N 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 150000004692 metal hydroxides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001766 physiological effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 239000012991 xanthate Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/006—Wet processes
- C22B7/007—Wet processes by acid leaching
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B15/00—Obtaining copper
- C22B15/0063—Hydrometallurgy
- C22B15/0084—Treating solutions
- C22B15/0086—Treating solutions by physical methods
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B19/00—Obtaining zinc or zinc oxide
- C22B19/20—Obtaining zinc otherwise than by distilling
- C22B19/22—Obtaining zinc otherwise than by distilling with leaching with acids
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B19/00—Obtaining zinc or zinc oxide
- C22B19/30—Obtaining zinc or zinc oxide from metallic residues or scraps
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B23/00—Obtaining nickel or cobalt
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B34/00—Obtaining refractory metals
- C22B34/30—Obtaining chromium, molybdenum or tungsten
- C22B34/32—Obtaining chromium
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/06—Sludge reduction, e.g. by lysis
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Treatment Of Sludge (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a process for recovering zinc from cyanide gold mud acid pickling waste liquid, and aims to solve the problems that the zinc in sludge cannot be effectively extracted, the discharge of zinc-containing waste water has serious harm to human health and industrial and agricultural activities, has the characteristics of persistence, high toxicity, serious pollution and the like, once the waste water enters the environment, the waste water cannot be biodegraded, most of the waste water participates in food chain circulation, and finally accumulates in organisms, the normal physiological metabolic activity of the organisms is damaged, and the human health is harmed. The method can effectively extract valuable metals in the sludge and the waste liquid, extract and remove zinc in the waste liquid after acid leaching, reduce the content of zinc in the waste liquid, reduce the pollution to the environment after the waste liquid is discharged, and also can effectively recycle metal resources in the waste liquid.
Description
Technical Field
The invention relates to the technical field of pickling sludge recovery and application, in particular to a process for recovering zinc from gold cyanide sludge pickling waste liquid.
Background
At present, no economic and technical parallel treatment method exists after acid pickling sludge is generated, a method adopted at home and abroad is a solid landfill method, the acid pickling sludge contains a large amount of heavy metals, the acid pickling sludge needs to be solidified and stabilized before landfill treatment, common curing agents comprise cement, asphalt, glass, water glass and the like, wherein the cement is one of the most common curing agents, cement solidification refers to mixing waste with common cement to form a solidified body with certain strength, so that the aim of reducing the leaching rate of dangerous components in the waste is fulfilled, although the cement solidification method is widely used, the cement solidification method has the defects that the occupied area is large, and the long-term stability of the heavy metals in the solidified body cannot be guaranteed, and in order to solve the problem, some foreign scholars research and find that: adding proper additives while cement solidification can improve the solidification effect, reduce the dissolution rate of harmful substances, save the cement consumption and increase the solidification fast strength, for example, Asavapistis, and the like utilize alkaline systems such as cement fly ash sludge and the like, so that the stability of certain heavy metal hydroxides reaches the optimal state, and the synergistic negative influence on the water reaction of a cementing compound caused by the redissolving property of acid-washing sludge is reduced, however, the research of some domestic scholars shows that: the application of the fly ash causes the stability of copper in a cement solidified body to be poor, and xanthate is added into common cement to treat heavy metal sludge, so that the leaching rate of heavy metal can be reduced.
In China, the quality fractions of copper, nickel, chromium and the like in the pickling sludge are high, the pickling sludge can be used as a raw material by some enterprises, in recent years, the research on domestic and foreign pickling sludge resources mainly focuses on two aspects of heavy metal recovery technology and material technology, and the following method is adopted for the resource recovery technology of the pickling sludge: acid leaching method and ammonia leaching method, the acid leaching method refers to the method that sulfuric acid, hydrochloric acid, etc. are used as lixiviants, extract the soluble target component from acid-washed mud, smelting method and roasting leaching method, the smelting method mainly aims at recovering copper and nickel, and uses coal, coke as fuel and reducing substance, and iron ore, copper ore, limestone, etc. as auxiliary materials to produce, the roasting leaching method uses high-temperature roasting to pretreat the impurity in the mud, and then uses acid, water, etc. medium to extract valuable metal in the roasted product, the burning recovery method refers to the method that heavy metal in the burned slag is recovered and utilized on the basis of the burning melting of the acid-washed mud, the method has the advantages of good treatment effect, small investment, etc., but the burning temperature has influence on the metal leaching; the material technology refers to a process for producing building materials or other materials by using acid-washed sludge as a raw material or an auxiliary material.
In conclusion, acid pickling sludge treatment recycling is always a research focus at home and abroad, many researches are carried out and certain achievements are obtained, but the industrialization is not so many, solidification pits are most common, the zinc content in waste liquid after acid pickling is high, the zinc in sludge cannot be effectively extracted, the discharge of zinc-containing waste water has serious harm to human health and industrial and agricultural activities, and the acid pickling sludge recycling agent has the characteristics of durability, high toxicity, serious pollution and the like, once the acid pickling sludge recycling agent enters the environment, the zinc-containing waste water cannot be biodegraded, most of the zinc-containing waste water participates in food chain circulation, and finally is accumulated in organisms, so that the normal physiological and metabolic activities of the organisms are damaged, and the human health is harmed.
There is therefore a need to propose a solution to this problem.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the process for recovering zinc from the gold cyanide mud pickling waste liquid, which can be used for extracting and removing zinc from the waste liquid after acid leaching, so that the zinc content in the waste liquid is reduced, and the pollution caused by the discharge of the waste liquid is reduced.
The technical purpose of the invention is realized by the following technical scheme: the process for recovering zinc from the gold cyanide mud acid pickling waste liquid comprises the following steps: 1) placing the gold mud into a first reaction kettle, adding an acid pickling leaching agent, stirring and stirring, controlling the pH value to be 6.0-7.5 in the reaction process, fully leaching and reacting, and filtering to obtain acid pickling waste liquid and filter residue; 2) pumping the filtrate into a second reaction kettle, adding hydrogen peroxide and lime milk, stirring to remove impurities, and extracting precipitates of ferric ions, Al, Cr, Si and the like to obtain acid-washing sludge mixed slurry, wherein the final pH value of the acid-washing sludge mixed slurry is 5-5.5; 3) pumping the acid-washing sludge mixed slurry into a settling tank, adding an adsorbent, leaching valuable metals such as Ni, Co and the like, pumping into a filter press for filter pressing treatment, pumping the acid-washing sludge mixed slurry after filter pressing into a thickener for settling and separating treatment to obtain leachate; 4) adding an extracting agent into the leachate to extract the leachate, taking an organic phase, mixing the organic phase with the leachate, adding NaCl and CaCl2, standing for 2 hours, and after layering, separating a liquid from the organic phase to obtain a zinc extraction mixed solution and a zinc salt; 5) extracting nickel, cobalt and copper from the zinc extraction mixed solution obtained in the step 4) to obtain corresponding nickel, cobalt and copper salt and raffinate; 6) using the raffinate obtained in the step 5) as a leaching agent and using the extraction method for extracting zinc in the step 4) to obtain the zinc-containing composition.
The invention is further configured to: the added leaching agent in the step 1) is waste pickle liquor in the stainless steel pickling process, and the leaching time is more than 4 hours.
The invention is further configured to: the adsorbent in the step 3) is a mixture of aspergillus, penicillium, trichoderma and polyamino saccharide sodium phosphate.
The invention is further configured to: the organic phase in the step 4) is 15-55% by volume: 45-85% of extractant and solvent oil.
The invention is further configured to: the solvent oil is one or two of kerosene and sulfonated kerosene.
The invention is further configured to: the extracting agent used for extracting the nickel, cobalt and copper in the step 5) is one or more of P204, P507 or Cyanex 272.
The invention is further configured to: the ratio of the hydrogen peroxide to the lime milk in the step 2) is 71: 32.
In conclusion, the invention has the following beneficial effects:
1. valuable metals in the sludge waste liquid are extracted and recovered, so that the waste of resources is reduced;
2. through repeated filter pressing and adsorption, the zinc content in the waste liquid can be effectively reduced, the pollution of the waste liquid to the environment after the waste liquid is discharged is reduced, and the treatment of the gold mud is more harmless.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the present invention is further described in detail with reference to specific embodiments, and it should be noted that the embodiments and features of the embodiments of the present application can be combined with each other without conflict.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The present invention will be described in detail with reference to examples.
The process for recovering zinc from the gold cyanide mud acid pickling waste liquid comprises the following steps: 1) placing the gold mud into a first reaction kettle, adding an acid pickling leaching agent, stirring and stirring, controlling the pH value to be 6.0-7.5 in the reaction process, fully leaching and reacting, and filtering to obtain acid pickling waste liquid and filter residue; 2) pumping the filtrate into a second reaction kettle, adding hydrogen peroxide and lime milk, stirring to remove impurities, and extracting precipitates of ferric ions, Al, Cr, Si and the like to obtain acid-washing sludge mixed slurry, wherein the final pH value of the acid-washing sludge mixed slurry is 5-5.5; 3) pumping the acid-washing sludge mixed slurry into a settling tank, adding an adsorbent, leaching valuable metals such as Ni, Co and the like, pumping into a filter press for filter pressing treatment, pumping the acid-washing sludge mixed slurry after filter pressing into a thickener for settling and separating treatment to obtain leachate; 4) adding an extracting agent into the leachate to extract the leachate, taking an organic phase, mixing the organic phase with the leachate, adding NaCl and CaCl2, standing for 2 hours, and after layering, separating a liquid from the organic phase to obtain a zinc extraction mixed solution and a zinc salt; 5) extracting nickel, cobalt and copper from the zinc extraction mixed solution obtained in the step 4) to obtain corresponding nickel, cobalt and copper salt and raffinate; 6) using the raffinate obtained in the step 5) as a leaching agent and using the extraction method for extracting zinc in the step 4) to obtain the zinc-containing composition.
The added leaching agent in the step 1) is waste pickle liquor in the stainless steel pickling process, and the leaching time is more than 4 hours.
The adsorbent in the step 3) is a mixture of aspergillus, penicillium, trichoderma and polyamino saccharide sodium phosphate.
The organic phase in the step 4) is 15-55% by volume: 45-85% of an extracting agent and solvent oil, wherein the solvent oil is one or two of kerosene and sulfonated kerosene.
The extracting agent used for extracting the nickel, cobalt and copper in the step 5) is one or more of P204, P507 or Cyanex 272.
The ratio of the hydrogen peroxide to the lime milk in the step 2) is 71: 32.
The method has high recycling efficiency of heavy metals, recovers the heavy metals from the sludge, directly uses the recovered heavy metals of nickel and chromium in stainless steel smelting, realizes the recycling of limited resources, avoids secondary pollution and saves the production cost. And the wastewater in the production process is recycled, and the sulfuric acid washing liquor in the stainless steel production process is directly used for leaching sludge, so that the consumption of a sulfuric acid reagent is reduced, the treatment cost is saved, the discharge of wastewater is effectively reduced, and secondary pollution is avoided. The leaching and acid washing wastewater is treated by the wastewater treatment facility and then recycled, so that the water consumption of surface treatment is reduced, and the cyclic utilization of the wastewater is realized.
The method comprises the steps of carrying out multi-stage treatment and filtration to obtain filter residue containing zinc and valuable metals, further treating the filter residue, extracting a zinc-containing composition from the filter residue through extraction, extracting a zinc-containing extract under the condition of ensuring that pollutants are cleaned by wastewater, and integrating various processes. The method integrates multiple processes of heavy metal recycling, waste pickle liquor recycling, waste water recycling and the like in the sludge, comprehensively considers the overall process of a stainless steel plant, the overall water balance and the sludge comprehensive treatment recycling process, realizes clean production and recycling, saves the treatment cost, realizes the recycling of water resources and heavy metal recycling, and achieves the effects of water saving and emission reduction.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (7)
1. The process for recovering zinc from the gold cyanide mud acid pickling waste liquid comprises the following steps: 1) placing the gold mud into a first reaction kettle, adding an acid pickling leaching agent, stirring and stirring, controlling the pH value to be 6.0-7.5 in the reaction process, fully leaching and reacting, and filtering to obtain acid pickling waste liquid and filter residue; 2) pumping the filtrate into a second reaction kettle, adding hydrogen peroxide and lime milk, stirring to remove impurities, and extracting precipitates of ferric ions, Al, Cr, Si and the like to obtain acid-washing sludge mixed slurry, wherein the final pH value of the acid-washing sludge mixed slurry is 5-5.5; 3) pumping the acid-washing sludge mixed slurry into a settling tank, adding an adsorbent, leaching valuable metals such as Ni, Co and the like, pumping into a filter press for filter pressing treatment, pumping the acid-washing sludge mixed slurry after filter pressing into a thickener for settling and separating treatment to obtain leachate; 4) adding an extracting agent into the leachate to extract the leachate, taking an organic phase, mixing the organic phase with the leachate, adding NaCl and CaCl2, standing for 2 hours, and after layering, separating a liquid from the organic phase to obtain a zinc extraction mixed solution and a zinc salt; 5) extracting nickel, cobalt and copper from the zinc extraction mixed solution obtained in the step 4) to obtain corresponding nickel, cobalt and copper salt and raffinate; 6) using the raffinate obtained in the step 5) as a leaching agent and using the extraction method for extracting zinc in the step 4) to obtain the zinc-containing composition.
2. The process for recovering zinc from gold cyanide sludge pickling waste liquid according to claim 1, characterized in that: the added leaching agent in the step 1) is waste pickle liquor in the stainless steel pickling process, and the leaching time is more than 4 hours.
3. The process for recovering zinc from gold cyanide sludge pickling waste liquid according to claim 1, characterized in that: the adsorbent in the step 3) is a mixture of aspergillus, penicillium, trichoderma and polyamino saccharide sodium phosphate.
4. The process for recovering zinc from gold cyanide sludge pickling waste liquid according to claim 1, characterized in that: the organic phase in the step 4) is 15-55% by volume: 45-85% of extractant and solvent oil.
5. The process for recovering zinc from gold cyanide sludge pickling waste liquid according to claim 4, characterized in that: the solvent oil is one or two of kerosene and sulfonated kerosene.
6. The process for recovering zinc from gold cyanide sludge pickling waste liquid according to claim 1, characterized in that: the extracting agent used for extracting the nickel, cobalt and copper in the step 5) is one or more of P204, P507 or Cyanex 272.
7. The process for recovering zinc from gold cyanide sludge pickling waste liquid according to claim 1, characterized in that: the ratio of the hydrogen peroxide to the lime milk in the step 2) is 71: 32.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110519695.4A CN113373309A (en) | 2021-05-13 | 2021-05-13 | Process for recovering zinc from gold cyanide mud acid pickling waste liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110519695.4A CN113373309A (en) | 2021-05-13 | 2021-05-13 | Process for recovering zinc from gold cyanide mud acid pickling waste liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113373309A true CN113373309A (en) | 2021-09-10 |
Family
ID=77572572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110519695.4A Pending CN113373309A (en) | 2021-05-13 | 2021-05-13 | Process for recovering zinc from gold cyanide mud acid pickling waste liquid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113373309A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101618892A (en) * | 2009-07-31 | 2010-01-06 | 东南大学 | Recovery and comprehensive utilization method of heavy metals in stainless steel pickling wastewater sludge |
| CN104711428A (en) * | 2015-02-12 | 2015-06-17 | 江苏恒嘉再生资源有限公司 | Method for preparing and recovering noble metal in pickling sludge |
| CN112458310A (en) * | 2020-11-25 | 2021-03-09 | 赛得利(九江)纤维有限公司 | Method for extracting zinc salt from zinc-containing wastewater |
-
2021
- 2021-05-13 CN CN202110519695.4A patent/CN113373309A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101618892A (en) * | 2009-07-31 | 2010-01-06 | 东南大学 | Recovery and comprehensive utilization method of heavy metals in stainless steel pickling wastewater sludge |
| CN104711428A (en) * | 2015-02-12 | 2015-06-17 | 江苏恒嘉再生资源有限公司 | Method for preparing and recovering noble metal in pickling sludge |
| CN112458310A (en) * | 2020-11-25 | 2021-03-09 | 赛得利(九江)纤维有限公司 | Method for extracting zinc salt from zinc-containing wastewater |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102534228B (en) | Method for comprehensively recovering valuable elements from high-arsenic-containing copper smelting soot | |
| CN101580901B (en) | Method for refining zinc by using slag containing zinc | |
| CN102173547B (en) | Resource recycling process for nickel-containing sludge in electroplating enterprises | |
| CN101618892B (en) | Recovery and comprehensive utilization method of heavy metals in stainless steel pickling wastewater sludge | |
| CN101497458B (en) | Method for preparing sodium stannate using circuit board tin-stripping wastewater | |
| CN101497942A (en) | Biological leaching-solvent extraction-electrodeposition recovering method for heavy metal copper in sludge | |
| CN101254988A (en) | Cyanogens-containing sewage water treatment method for baking cyanidation gold extraction process | |
| CN101899582A (en) | Method for extracting vanadium pentoxide from vanadium slag | |
| CN102634672A (en) | Method for treating arsenic-containing waste copper slag | |
| CN101139660A (en) | Method for extracting iron-lead and gold-silver from gold concentrate acidifying baking residue | |
| CN106399715A (en) | Method for producing electrolytic zinc through high-chloride zinc ash material ammonia leaching ion exchange combined process | |
| CN110195160A (en) | A kind of comprehensive recovering process of clean melt cinder of wet-process zinc metallurgy | |
| CN107557583A (en) | Valuable metal biology leaches the method for circulation collection in a kind of fluorine-containing inorganic dangerous waste | |
| CN101748280A (en) | Process for reclaiming zinc in steel-making dust of waste galvanized plate | |
| CN102755892B (en) | Method and application of preparing high-level oxidation catalyst through cobalt ore smelting slag | |
| CN104745821A (en) | Method for recovering nickel and copper metals in acid pickling sludge | |
| CN108866337B (en) | A method of processing metal sludge | |
| CN102643986A (en) | Method for producing electrolytic manganese by taking pyrolusite as raw material through wet method reduction leaching | |
| CN101260471B (en) | Complete set of cleaning producing technique for extracting soluble manganese from manganese residue by using anode liquor | |
| CN104193061A (en) | Treatment method for paraquat pesticide wastewater | |
| CN111268718B (en) | Method for directly preparing mercury oxide from mercury-containing organic sludge | |
| CN111057837B (en) | Low-temperature roasting treatment method for cobalt hydrometallurgy waste residues | |
| CN113373309A (en) | Process for recovering zinc from gold cyanide mud acid pickling waste liquid | |
| CN201276463Y (en) | Sewage treatment system extracting gold by calcination cyanation | |
| CN104711427B (en) | Method for preparing and recovering sponge copper metal in pickling sludge |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210910 |
|
| RJ01 | Rejection of invention patent application after publication |