CN103540754A - Pretreatment process before silver flotation of highly leached residues - Google Patents
Pretreatment process before silver flotation of highly leached residues Download PDFInfo
- Publication number
- CN103540754A CN103540754A CN201310508399.XA CN201310508399A CN103540754A CN 103540754 A CN103540754 A CN 103540754A CN 201310508399 A CN201310508399 A CN 201310508399A CN 103540754 A CN103540754 A CN 103540754A
- Authority
- CN
- China
- Prior art keywords
- height
- slag
- silver
- soak
- soaks
- 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
Classifications
-
- 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
- Water Treatment By Sorption (AREA)
Abstract
The invention discloses a pretreatment process before silver flotation of highly leached residues. Aiming at the physicochemical property of highly leached residues, the pretreatment process is provided for pretreatment before silver flotation. the pretreatment process comprises four process steps, including pulp mixing treatment, dispersion treatment, adsorption treatment and activation treatment, wherein pulp mixing is to adjust the pH of the acidic highly leached residue pulp to the range from 4 to 4.5 and adjust the concentration of the ore pulp to the range from 35% to 45% so as to reach appropriate flotation pH condition; the dispersion treatment is to eliminate the influence of flocculant in the highly leached residues by using sodium hexametaphosphate; the adsorption treatment is to adsorb silver sulfate and micro-particle silver in the highly leached residues by using an adsorption carrier activated carbon powder; and the activation treatment is to improve the floatability of non-selectable minerals by using sodium sulfate as an activator. The pretreated highly leached residues is advantageous for further flotation of silver; the use of chemical agents is low; the cost is low; and the silver recovery rate is high.
Description
Technical field
The invention belongs to non-ferrous metal metallurgy technical field, be specifically related to a kind of high slag silver flotation pretreatment technology before that soaks.
Background technology
The height of current domestic peracid extract technology output soaks slag and has reached annual more than 1,500,000 tons, and because valuable metal content is low, many enterprises are just stored in slag field and store up.For reclaiming the valuable metals such as silver in high acid leaching slag, zinc, copper, improve Business Economic Benefit, reduce the pollution of waste sludge discharge to environment, domestic certain enterprise reclaims research to the silver in leached mud, the general high silver soaking in slag of floatation process recovery of all taking.
The height that the low pollution vanadium settling iron-removing wet zinc smelting method of Chifeng Hongye Zinc Smelting Co.,Ltd of take is produced soaks slag as example, and it also belongs to the peracid extract technology method in zinc hydrometallurgy, analyzes its silver-colored phase and forms, and laboratory analysis of data is as following table:
The phase that height soaks silver in slag forms
According to height, soak the material phase analysis of slag, for height, soak slag mineralogical study result targetedly and show:
(1) according to the high slag material phase analysis result of soaking of upper table: height soaks Sulfuric acid disilver salt in slag and accounts for 17.3%, belongs to not optional silver.Silver suboxide accounts for 0.7%, belongs to not optional silver.Silver in silicate accounts for 8.1%.
(2) height soaks in slag and has had excessive polyacrylamide flocculant, and polyacrylamide can be hydrolyzed and become polyacrylic acid in the aqueous solution, and it has or not SELECTIVE FLOCCULATION to fine.
(3) according to height is soaked to slag analysis, wherein contain remaining sulfuric acid, slag shows peracidity.
(4) loss on ignition, up to 33.41%, illustrates that in slag, the volatile content such as crystal water is high.
By height being soaked to the material phase analysis of silver in slag, find out, height soaks slag and directly puts into the flotation results not having in flotation flowsheet, the pretreatment technology that height soaks before the flotation of slag silver is a very important research topic, propose a kind of scientific and reasonable height and soak slag silver flotation pretreatment technology before, for improving silver raising recovery rate and grade, reduce dosing, improve flotation economic benefit tool and be of great significance.
Summary of the invention
The object of this invention is to provide a kind of high slag silver flotation pretreatment technology before that soaks, be conducive to the further flotation of silver, consumption of chemical agent is few, cost is low, silver raising recovery rate is high.
Technical scheme of the present invention is: a kind of high slag silver flotation pretreatment technology before that soaks, and it carries out successively in the steps below:
(1) processing of sizing mixing: height soaks ratio that slag and water are 35～45% in slurry concentration and is mixed into height and soaks dreg slurry, soaks in dreg slurry and adds milk of lime at height, regulates pH to 4～4.5, for floatation indicators optimization creates conditions;
(2) dispersion treatment: height soak in dreg slurry, add six inclined to one side sodium sulfate dispersion agents, height per ton to soak slag to add Sodium hexametaphosphate 99 be 100～140 grams, stir 5～10min, eliminate high flocculation agent impact of soaking in slag, make particle disperse, not condense;
(3) adsorption treatment: soak and add activated carbon powder in dreg slurry at height, height per ton soaks slag, and to add gac be 2000～4000 grams, stirs 4～6min, adsorbs high Sulfuric acid disilver salt in slag and the silver in silicate of soaking, be beneficial to by floatingly selecting activated carbon powder, thereby reclaim silver;
(4) activation treatment: soak and add sodium sulphite, height per ton to soak slag in dreg slurry to add activator Na at height
2s is 800～1200 grams, stirs 8～12min, activates the high silver suboxide in slag etc. that soaks, and is conducive to floatation recovery silver.
Further, as a preferred embodiment of the present invention, described height soaks the pretreatment technology before the flotation of slag silver, and it carries out successively in the steps below:
(1) processing of sizing mixing: height soaks ratio that slag and water are 40% in slurry concentration and is mixed into height and soaks dreg slurry, soaks in dreg slurry and adds milk of lime at height, regulates pH to 4.3, for floatation indicators optimization creates conditions;
(2) dispersion treatment: height soak in dreg slurry, add six inclined to one side sodium sulfate dispersion agents, height per ton to soak slag to add Sodium hexametaphosphate 99 be 120 grams, stir 8min, eliminate high flocculation agent impact of soaking in slag, make particle disperse, not condense;
(3) adsorption treatment: height soak in dreg slurry, add activated carbon powder, height per ton to soak slag to add gac be 3000 grams, stir 5min, adsorb high Sulfuric acid disilver salt in slag and the silver in silicate of soaking, be beneficial to by floatingly selecting activated carbon powder, thereby reclaim silver;
(4) activation treatment: soak and add sodium sulphite, height per ton to soak slag in dreg slurry to add activator Na at height
2s is 1000 grams, stirs 10min, activates the high silver suboxide in slag etc. that soaks, and is conducive to floatation recovery silver.
Advantage of the present invention is:
The present invention be directed to height and soak the physicochemical property of slag, carry out pre-treatment and a kind for the treatment of process of proposing before carrying out silver-colored flotation, it comprises the processing of sizing mixing, dispersion treatment, adsorption treatment and four processing steps of activation treatment;
The object of processing of sizing mixing is: in high temperature peracid technique, be a kind of acidic leaching technique, height soaks in slag and contains a large amount of sulfuric acid, and height soaks dreg slurry and is acid, and the acidity of flotation medium affects viscosity and the surface tension of ore pulp, thereby affect flotation froth, so must first regulate pH to 4～4.5.Research by experiment, this pH value is conducive to improve the flotation of silver concentrate rate of recovery and grade.
Dispersion treatment object is: research by experiment, and Sodium hexametaphosphate 99, as medium dispersion agent, is eliminated high flocculation agent impact of soaking in slag, reduce pulp viscosity, be that ore pulp particle disperses, do not condense, guarantee that valuable mineral disperses not to be wrapped, be conducive to flotation separation silver.
Adsorption treatment object is: research by experiment, add absorption carrier activity charcoal powder, and action time, 5min was used for adsorbing high soak Sulfuric acid disilver salt and particulate silver in slag, and flotation adds the medicament of energy flotation gac again, is conducive to improve the not silver recovery effect of optional silver.
Activation treatment object is: research by experiment, add sodium sulphite as activator, action time 10min, improve can not ore dressing thing flotability.
Processing method of the present invention, is conducive to the further flotation of silver, and consumption of chemical agent is few, cost is low, silver raising recovery rate is high.
Embodiment
Below by three embodiment, the present invention is described in further detail:
Embodiment 1: a kind of high slag silver flotation pretreatment technology before that soaks, and it carries out successively in the steps below:
(1) processing of sizing mixing: height soaks ratio that slag and water are 40% in slurry concentration and is mixed into height and soaks dreg slurry, soaks in dreg slurry and adds milk of lime at height, regulates pH to 4.3, for floatation indicators optimization creates conditions;
(2) dispersion treatment: height soak in dreg slurry, add six inclined to one side sodium sulfate dispersion agents, height per ton to soak slag to add Sodium hexametaphosphate 99 be 120 grams, stir 8min, eliminate high flocculation agent impact of soaking in slag, make particle disperse, not condense;
(3) adsorption treatment: height soak in dreg slurry, add activated carbon powder, height per ton to soak slag to add gac be 3000 grams, stir 5min, adsorb high Sulfuric acid disilver salt in slag and the silver in silicate of soaking, be beneficial to by floatingly selecting activated carbon powder, thereby reclaim silver;
(4) activation treatment: soak and add sodium sulphite, height per ton to soak slag in dreg slurry to add activator Na at height
2s is 1000 grams, stirs 10min, activates the high silver suboxide in slag etc. that soaks, and is conducive to floatation recovery silver.
Embodiment 2: a kind of high slag silver flotation pretreatment technology before that soaks, and it carries out successively in the steps below:
(1) processing of sizing mixing: height soaks ratio that slag and water are 35% in slurry concentration and is mixed into height and soaks dreg slurry, soaks in dreg slurry and adds milk of lime at height, regulates pH to 4.2, for floatation indicators optimization creates conditions;
(2) dispersion treatment: height soak in dreg slurry, add six inclined to one side sodium sulfate dispersion agents, height per ton to soak slag to add Sodium hexametaphosphate 99 be 130 grams, stir 10min, eliminate high flocculation agent impact of soaking in slag, make particle disperse, not condense;
(3) adsorption treatment: height soak in dreg slurry, add activated carbon powder, height per ton to soak slag to add gac be 2500 grams, stir 6min, adsorb high Sulfuric acid disilver salt in slag and the silver in silicate of soaking, be beneficial to by floatingly selecting activated carbon powder, thereby reclaim silver;
(4) activation treatment: soak and add sodium sulphite, height per ton to soak slag in dreg slurry to add activator Na at height
2s is 1200 grams, stirs 8min, activates the high silver suboxide in slag etc. that soaks, and is conducive to floatation recovery silver.
Embodiment 3: a kind of high slag silver flotation pretreatment technology before that soaks, and it carries out successively in the steps below:
(1) processing of sizing mixing: height soaks ratio that slag and water are 45% in slurry concentration and is mixed into height and soaks dreg slurry, soaks in dreg slurry and adds milk of lime at height, regulates pH to 4.5, for floatation indicators optimization creates conditions;
(2) dispersion treatment: height soak in dreg slurry, add six inclined to one side sodium sulfate dispersion agents, height per ton to soak slag to add Sodium hexametaphosphate 99 be 110 grams, stir 6min, eliminate high flocculation agent impact of soaking in slag, make particle disperse, not condense;
(3) adsorption treatment: height soak in dreg slurry, add activated carbon powder, height per ton to soak slag to add gac be 3500 grams, stir 4min, adsorb high Sulfuric acid disilver salt in slag and the silver in silicate of soaking, be beneficial to by floatingly selecting activated carbon powder, thereby reclaim silver;
(4) activation treatment: soak and add sodium sulphite, height per ton to soak slag in dreg slurry to add activator Na at height
2s is 800 grams, stirs 12min, activates the high silver suboxide in slag etc. that soaks, and is conducive to floatation recovery silver.
Claims (2)
1. the high pretreatment technology soaking before the flotation of slag silver, it carries out successively in the steps below:
(1) processing of sizing mixing: height soaks ratio that slag and water are 35～45% in slurry concentration and is mixed into height and soaks dreg slurry, soaks in dreg slurry and adds milk of lime at height, regulates pH to 4～4.5, for floatation indicators optimization creates conditions;
(2) dispersion treatment: height soak in dreg slurry, add six inclined to one side sodium sulfate dispersion agents, height per ton to soak slag to add Sodium hexametaphosphate 99 be 100～140 grams, stir 5～10min, eliminate high flocculation agent impact of soaking in slag, make particle disperse, not condense;
(3) adsorption treatment: soak and add activated carbon powder in dreg slurry at height, height per ton soaks slag, and to add gac be 2000～4000 grams, stirs 4～6min, adsorbs high Sulfuric acid disilver salt in slag and the silver in silicate of soaking, be beneficial to by floatingly selecting activated carbon powder, thereby reclaim silver;
(4) activation treatment: soak and add sodium sulphite, height per ton to soak slag in dreg slurry to add activator Na at height
2s is 800～1200 grams, stirs 8～12min, activates the high silver suboxide in slag etc. that soaks, and is conducive to floatation recovery silver.
2. height according to claim 1 soaks slag silver flotation pretreatment technology before, it is characterized in that: it carries out successively in the steps below:
(1) processing of sizing mixing: height soaks ratio that slag and water are 40% in slurry concentration and is mixed into height and soaks dreg slurry, soaks in dreg slurry and adds milk of lime at height, regulates pH to 4.3, for floatation indicators optimization creates conditions;
(2) dispersion treatment: height soak in dreg slurry, add six inclined to one side sodium sulfate dispersion agents, height per ton to soak slag to add Sodium hexametaphosphate 99 be 120 grams, stir 8min, eliminate high flocculation agent impact of soaking in slag, make particle disperse, not condense;
(3) adsorption treatment: height soak in dreg slurry, add activated carbon powder, height per ton to soak slag to add gac be 3000 grams, stir 5min, adsorb high Sulfuric acid disilver salt in slag and the silver in silicate of soaking, be beneficial to by floatingly selecting activated carbon powder, thereby reclaim silver;
(4) activation treatment: soak and add sodium sulphite, height per ton to soak slag in dreg slurry to add activator Na at height
2s is 1000 grams, stirs 10min, activates the high silver suboxide in slag etc. that soaks, and is conducive to floatation recovery silver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310508399.XA CN103540754A (en) | 2013-10-25 | 2013-10-25 | Pretreatment process before silver flotation of highly leached residues |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310508399.XA CN103540754A (en) | 2013-10-25 | 2013-10-25 | Pretreatment process before silver flotation of highly leached residues |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103540754A true CN103540754A (en) | 2014-01-29 |
Family
ID=49964599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310508399.XA Pending CN103540754A (en) | 2013-10-25 | 2013-10-25 | Pretreatment process before silver flotation of highly leached residues |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103540754A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3968032A (en) * | 1973-01-27 | 1976-07-06 | Asturiana De Zinc S.A. | Process for concentrating lead and silver by flotation in products which contain oxidized lead |
| CN102051490A (en) * | 2010-10-22 | 2011-05-11 | 蒙自矿冶有限责任公司 | Novel method for recovering silver in high-iron sphalerite |
| CN102225373A (en) * | 2011-05-05 | 2011-10-26 | 赤峰中色库博红烨锌业有限公司 | Method for increasing grade and recovery rate of flotation silver separated from high leaching residues |
| CN102225372A (en) * | 2011-05-05 | 2011-10-26 | 赤峰中色库博红烨锌业有限公司 | Flotation method for separating silver from high leaching residues |
| CN102614991A (en) * | 2012-03-19 | 2012-08-01 | 赤峰中色锌业有限公司 | Flotation process for recovering silver from high-immersion slag by middling recleaning method |
| CN102864312A (en) * | 2012-10-19 | 2013-01-09 | 四川四环电锌有限公司 | Method for recovering silver and copper from electrolytic zinc waste residues |
-
2013
- 2013-10-25 CN CN201310508399.XA patent/CN103540754A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3968032A (en) * | 1973-01-27 | 1976-07-06 | Asturiana De Zinc S.A. | Process for concentrating lead and silver by flotation in products which contain oxidized lead |
| CN102051490A (en) * | 2010-10-22 | 2011-05-11 | 蒙自矿冶有限责任公司 | Novel method for recovering silver in high-iron sphalerite |
| CN102225373A (en) * | 2011-05-05 | 2011-10-26 | 赤峰中色库博红烨锌业有限公司 | Method for increasing grade and recovery rate of flotation silver separated from high leaching residues |
| CN102225372A (en) * | 2011-05-05 | 2011-10-26 | 赤峰中色库博红烨锌业有限公司 | Flotation method for separating silver from high leaching residues |
| CN102614991A (en) * | 2012-03-19 | 2012-08-01 | 赤峰中色锌业有限公司 | Flotation process for recovering silver from high-immersion slag by middling recleaning method |
| CN102864312A (en) * | 2012-10-19 | 2013-01-09 | 四川四环电锌有限公司 | Method for recovering silver and copper from electrolytic zinc waste residues |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107188330B (en) | Method for adsorbing and purifying acidic wastewater | |
| Liu et al. | A review of the effect of water quality on flotation | |
| CN104478160B (en) | Selecting and purchasing ore deposit contains the method for organism and the process of heavy metal wastewater thereby synergistic oxidation | |
| Tu et al. | Removal of cyanide adsorbed on pyrite by H2O2 oxidation under alkaline conditions | |
| Azevedo et al. | Treatment and water reuse of lead-zinc sulphide ore mill wastewaters by high rate dissolved air flotation | |
| CN106745598B (en) | Method for reducing COD (chemical oxygen demand) of tungsten ore dressing tailing pulp | |
| CN104889134B (en) | A kind of gold mine cyanogen-containing tailing Slag treatment method | |
| CN107010751A (en) | A kind of integrated conduct method of high concentration arsenic-containing acid waste water | |
| CN103409623A (en) | Method for reducing consumption of thiosulfate in gold leaching system | |
| CN113976307B (en) | Flotation separation method of lead zinc sulfide ore difficult to separate and zinc blende inhibitor thereof | |
| CN104944639A (en) | Comprehensive utilization method for cyanogen-containing tailing slurry | |
| CN105463204A (en) | Purifying and regenerating method for gold bearing mineral containing cyanating solution | |
| Arnold et al. | Mine water as a resource: selective removal and recovery of trace antimony from mine-impacted water | |
| CN102502934A (en) | Treatment chemical for lead-zinc flotation tailing wastewater | |
| Dubrovskaya et al. | Non-reagent cleaning of industrial wastewater, containing heavy metals based on technology of hydrothermodynamic cavitation | |
| CN103495589A (en) | Electroplating waste slag recycling method | |
| CN104961272A (en) | Method for treating cyaniding tailing pulp in gold industry | |
| Jing et al. | Reuse of mine and ore washing wastewater in scheelite flotation process to save freshwater: Lab to industrial scale | |
| CN109574263A (en) | A kind of processing of fluorite ore-dressing wastewater and reuse method | |
| Matis et al. | Removal and recovery of metals from dilute solutions: applications of flotation techniques | |
| CN102600980A (en) | Recycling method for mineral processing waste water with high leaching residue content in zinc hydrometallurgy | |
| CN103332773B (en) | Method for removing mercury in waste water | |
| CN105000720A (en) | Method for treating cyaniding tailing slurry in gold smelting industry | |
| CN103979719B (en) | The recoverying and utilizing method of triphane ore dressing tail water | |
| CN103540754A (en) | Pretreatment process before silver flotation of highly leached residues |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140129 |