CN102872978A - Copper-zinc flotation process for minerals and products - Google Patents
Copper-zinc flotation process for minerals and products Download PDFInfo
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- CN102872978A CN102872978A CN 201210310586 CN201210310586A CN102872978A CN 102872978 A CN102872978 A CN 102872978A CN 201210310586 CN201210310586 CN 201210310586 CN 201210310586 A CN201210310586 A CN 201210310586A CN 102872978 A CN102872978 A CN 102872978A
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Abstract
The invention relates to the technical field of efficient development and utilization of separated mineral resources, in particular to a copper-zinc flotation process for minerals and products. The copper-zinc flotation process comprises the following steps of: 1) performing ball milling, namely performing ball milling repeatedly on the minerals through a ball mill and a spiral classifier, so that the using amount of lime is reduced; 2) performing copper-zinc bulk flotation, namely performing copper-zinc flotation on the minerals through a first flotation machine under the condition that the pH value is 9.5 to 10.5, so that the amount of alkyl xanthate is reduced; 3) performing sulfur flotation, namely performing sulfur flotation through a third flotation machine, so that the using amount of sulfuric acid and activated carbon is reduced; and 4) performing zinc separation, namely separating intermediate minerals produced in the copper-zinc bulk flotation process through a second flotation machine, and separating zinc by using the activated carbon, copper sulfate and the alkyl xanthate. The copper-zinc flotation process has the advantages that the circulation amount of the intermediate minerals is reduced, the loss of useful minerals in tailings is reduced, and the phenomenon that fine copper minerals and zinc minerals and gangue minerals with high activity are adhered to one another and aggregated under the condition of large reagent amount is avoided. Moreover, the recovery rate of copper and the zinc is improved, and reagent consumption is reduced.
Description
Technical field
The present invention relates to Efficient Development and the efficient technique of rainwater utilization field of mineral resources sorting, specifically refer to copper zinc floatation process of a kind of mineral and products thereof.
Background technology
Common floatation process is under high PH condition in the market, be that pH value is greater than 12, in order to suppress a large amount of pyrite, thereby add a large amount of xanthate (formal name used at school is the alkyl xanthate) and mix floating copper, zinc, then use reagent removal by active carbon, copper sulphate for activation zinc carries out copper, zinc separates, and mine tailing is sized mixing with sulfuric acid and produced high-quality sulphur concentrate (mine tailing after reclaiming copper zinc before 2006 is the sulphur concentrate, and grade is less than 35%) under the neutrallty condition.1985 to 2007 production targets: head grade Cu2.07%, Zn1.83%, S35.7%, copper concentrate contains Cu12.45%, copper recovery 66.74%, zinc concentrate contains Zn37.73%, zinc recovery 40.16%
For many years, dresser author has set up many effective methods seeking effectively to have done huge effort aspect the economic copper zinc isolation technics both at home and abroad.When pressing down the floating copper of zinc, be divided into substantially four classes: 1. cyanide and mixture thereof; 2. sulfurous acid (or sulphite) and mixture thereof; 3. vulcanized sodium mixture; 4. carboxymethyl cellulose.The method that presses down the floating zinc of copper has: the flotation of 1. heating; 2. complex compound method, copper sulphate and sodium thiosulfate (1: 3) complexing; 3. potassium ferricyanide method.In recent years, copper zinc isolation technics has obtained the progress of significant in the following aspects: the 1. application of novel organic inhibitor; 2. high-gradient magnetically separating; 3. electrochemical oxidation; 4. without the floating zinc of activator; 5. selective copper collector.
The sorting of copper-zinc ore, with secondary copper sulfide, in conjunction with cupric oxide, milkiness shape embedding cloth, soluble copper and pyrite content increase and the very difficult choosing that becomes, sorting index is lower.The sorting of copper-zinc ore mix-and preferential flow process is main, and preferential flow process be time (China's this technique of more employing), but no matter adopts that flow process, and it is one of very large problem of difficulty that copper zinc is separated in domestic and international always, its reason that is difficult to separate is:
1, the tight symbiosis of copper zinc mineral; The chalcopyrite of compact ore often is the particle of emulsion droplet shape below 5 microns and is present in the zincblende, is difficult to reach monomer dissociation under present industrial ore grinding technical conditions.
2, the copper zinc ore is by secondary activated by copper ions; Its impact is in becoming the ore deposit process, forms a kind of coverlay of new chemical reaction product in mineral surfaces, so that before sorting, mineral surfaces need carry out cleaning treatment, can obtain good separating effect.But the composition of the ion after cleaning in the ore pulp just rises to the principal element that affects sorting, need take again to reduce harmful Cu
2+, Pb
2+The effective measures of content.
Difficulty for the first situation causes except adopting mixture concentrate or chats fine grinding, there is no other good way at present.For the activation of copper ion, at aspects such as prevent and avoid consequences, carried out many research work, its technological approaches can be summarized as:
1, with vulcanized sodium cement copper ion.Calculate by chemical reaction equilibrium, copper ion may before the zincblende activation, precipitate it with vulcanized sodium fully.In addition, also can adopt copper ion in cationic ion-exchange resin or the activated carbon adsorption solution.
2, use deactivators to remove the copper ion of zincblende Adsorption on Surface.NaCN, H are more effectively arranged
2SO
4, H
2SO
4+ Fe
2(SO
4)
3Deng.
3, collector film is removed in bulk concentrate reagent removal.
Along with developing rapidly of technique of preparing, industry-by-industry has proposed more and more higher requirement to the application of mineral processing index and product, must produce in a large number various products with satisfying the market.Utilize the advantage of Domestic Resources, technology, product cost and performance, take part in international competition, foreign exchange earning has huge Social benefit and economic benefit.And a large amount of lime and xanthate that the mode of traditional ore dressing had both consumed, having increased again subsequent handling copper zinc separates reagent removal and the difficulty of separating, and has also increased the consumption of sulfuric acid in floating sulphur operation.Therefore the applicant is in view of the disappearance and deficiency of above-mentioned known technique of preparing, and the spirit of adhering to research and innovation, keeping on improving is utilized its professional eye and professional knowledge, works out a kind of copper zinc floatation process of New Mineral.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, and the copper zinc floatation process of the mineral that a kind of not only copper, zinc recovery be greatly improved is provided, and obtained superior in quality copper, zinc concentrate product.
The present invention is achieved through the following technical solutions, may further comprise the steps,
1. ball milling: by ball mill and spiral classifier mineral are carried out repeatedly ball milling, reduce the consumption of lime;
2. copper zinc is mixed floating: under PH9.5 to PH10.5 condition, with a flotation device mineral are carried out the flotation of copper zinc, reduce the dose of alkyl xanthate;
3. float sulphur: No. three floating sulphur of flotation device, the consumption of minimizing sulfuric acid and active carbon;
4. zinc separates: with No. two flotation devices the mixed floating middle mineral of copper zinc are separated, isolate zinc with active carbon, copper sulphate, alkyl xanthate.
Also comprise the zinc concentrate, copper concentrate, the sulphur concentrate and tailings that utilize said method to produce.
The invention has the advantages that, under the low medicinal strip spare of low alkali, controlled the floating of sulfur mineral, reduced middle mineral internal circulating load, reduced the loss of valuable mineral in mine tailing, and fine fraction copper mineral, zinc mineral stick with active stronger gangue mineral generation and reunite under the large pharmaceutical quantities condition.Copper mineral, zinc mineral can be floated fully, improved the rate of recovery of copper, zinc, more be conducive to the separation of copper zinc, and separate the nontoxic cheap medicament of application at copper zinc and make up, replace the heavy chromium sylvite of severe toxicity, environment friendly and pollution-free, both reduced the inhibition to copper zinc, more effective to the separation of copper zinc again, the effective separation of enforcement copper zinc sulphur has been saved reagent consumption.
Description of drawings
Fig. 1 is floating principle schematic diagram of the present invention;
Fig. 2 is embodiment of the invention schematic diagram.
The specific embodiment
Be described further below in conjunction with 1 pair of the preferred embodiments of the present invention of accompanying drawing, may further comprise the steps,
1. ball milling: carry out repeatedly ball milling by ball mill 1 and 2 pairs of mineral of spiral classifier, reduce the consumption of lime;
2. copper zinc is mixed floating: under PH9.5 to PH10.5 condition, carry out the flotation of copper zinc with 41 pairs of mineral of a flotation device, reduce the dose of alkyl xanthate;
3. float sulphur: adopt flotation devices 43 floating sulphur No. three, reduce the consumption of sulfuric acid and active carbon;
4. zinc separates: the mixed floating middle mineral of copper zinc are separated with No. two flotation devices 42, isolate zinc with active carbon, copper sulphate, alkyl xanthate.
Also comprise the zinc concentrate, copper concentrate, the sulphur concentrate and tailings that utilize said method to produce.
Concrete operations as shown in Figure 2, size according to mineral, utilize two different ball mills 1 of progression respectively bulk mineral and fritter mineral to be carried out ball milling, and the middle mineral that utilize 2 pairs of ball mills of two different progression spiral classifiers 1 to produce carry out classification, repeatedly ball milling.The above middle mineral of 300 mm diameter are delivered to the higher ball mill of precision 1 by hydrocyclone 3, ball milling repeatedly again, the following middle mineral of 300 mm diameter then stir by the agitator 5 of 2 meters of diameters, carrying out copper zinc by a flotation device 41 mixes floating, the middle mineral that contain copper zinc stir by the agitator 5 of 1.5 meters of two diameters successively, floatingly select respectively zinc concentrate and copper concentrate by No. two flotation devices 42; Mineral then stir by the agitator 5 of 2 meters of diameters in the middle of all the other, floatingly select the sulphur concentrate and tailings by No. three flotation devices 43 again.
According to the floatability of different minerals under different PH conditions, change traditional high PH condition (PH〉12), under low PH condition (PH9.5 to 10.5), reduce the collecting agent dose, both reduced the inhibition to copper zinc, more effective to the separation of copper zinc again, the effective separation of enforcement copper zinc sulphur, save reagent consumption, improved the copper zinc recovery.
In order under low medicinal strip spare, to promote the effect of beneficiation reagent and ore pulp, adopt new type flotation machine simultaneously, improve its mechanical performance.Native copper zinc separates mixed floating flow process and the floating sulphur of mine tailing adopts CHF-3.5 inflatable agitated flotation cell, because sulfur-bearing is high, ore pulp is than great, easily deep gouge.No. one flotation device 41 is used the BF-4 agitation impeller flotator instead, and No. three flotation device 43 is used the SF-8 agitation impeller flotator instead, and stirring intensity has improved, and pharmacy effect has strengthened, and the deep gouge phenomenon also greatly reduces, and flotation time has also increased.No. two flotation devices 42 of copper zinc separation process are used the SF-1.2 flotation device instead by the 3A flotation device, and flotation time increases, and stirring capacity has also strengthened.Copper concentrate, sulphur concentrate filter and change original natural-dehydration method, adopt concentrator and ceramic filter mechanical dehydration, have accelerated the sale of product.
Controlled the floating of sulfur mineral under the low medicinal strip spare of low alkali, reduced again the chats internal circulating load, reduced the loss of valuable mineral in mine tailing, and fine fraction copper mineral, zinc mineral stick with active stronger gangue mineral generation and reunite under the large pharmaceutical quantities condition.Copper mineral, zinc mineral can be floated fully, improved the rate of recovery of copper, zinc, more be conducive to the separation of copper zinc, and separate the nontoxic cheap medicament of application at copper zinc and make up, the heavy chromium sylvite that replaces severe toxicity has realized that effectively copper zinc separates, and has fundamentally solved this ore deposit isolation technics problem.And a large amount of lime and xanthate that the mode of traditional ore dressing had both consumed, having increased again subsequent handling copper zinc separates reagent removal and the difficulty of separating, and has also increased the consumption of sulfuric acid in floating sulphur operation.
The regime of agent contrastive analysis on the new and old thing is shown in Table 1:
Table 1
Lime is reduced to 10 kg/tonnes by 18 kg/tonnes, and xanthate is reduced to 560 grams/ton by 810 grams/ton, and sulfuric acid is reduced to 8 kg/tonnes by 12 kg/tonnes, and active carbon is reduced to 500 grams/ton by 800 grams/ton.Therefore the application of present technique has not only obtained superior in quality copper, zinc concentrate product, and copper, zinc recovery also are greatly improved.
Claims (2)
1. copper zinc floatation process of mineral and products thereof is characterized in that may further comprise the steps,
1. ball milling: by ball mill and spiral classifier mineral are carried out repeatedly ball milling, reduce the consumption of lime;
2. copper zinc is mixed floating: under PH9.5 to PH10.5 condition, with a flotation device mineral are carried out the flotation of copper zinc, reduce the dose of alkyl xanthate;
3. float sulphur: No. three floating sulphur of flotation device, the consumption of minimizing sulfuric acid and active carbon;
4. zinc separates: with No. two flotation devices the mixed floating middle mineral of copper zinc are separated, isolate zinc with active carbon, copper sulphate, alkyl xanthate.
2. copper zinc floatation process of mineral and products thereof is characterized in that: the zinc concentrate, copper concentrate, the sulphur concentrate and tailings that also comprise the method production that utilizes claim 1.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112718252A (en) * | 2020-12-15 | 2021-04-30 | 长沙矿山研究院有限责任公司 | Flotation recovery method for high-calcium-magnesium high-argillaceous mixed lead-zinc ore |
| CN113600346A (en) * | 2021-08-11 | 2021-11-05 | 厦门紫金矿冶技术有限公司 | Secondary copper sulfide ore inhibitor and preparation and application thereof |
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2012
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112718252A (en) * | 2020-12-15 | 2021-04-30 | 长沙矿山研究院有限责任公司 | Flotation recovery method for high-calcium-magnesium high-argillaceous mixed lead-zinc ore |
| CN112718252B (en) * | 2020-12-15 | 2022-06-03 | 长沙矿山研究院有限责任公司 | Flotation recovery method for high-calcium-magnesium high-argillaceous mixed lead-zinc ore |
| CN113600346A (en) * | 2021-08-11 | 2021-11-05 | 厦门紫金矿冶技术有限公司 | Secondary copper sulfide ore inhibitor and preparation and application thereof |
| CN113600346B (en) * | 2021-08-11 | 2022-12-02 | 厦门紫金矿冶技术有限公司 | Secondary copper sulfide ore inhibitor and preparation and application thereof |
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Application publication date: 20130116 |