CN103041924A - Beneficiation process of recovering associated silver from lead-zinc-sliver sulfide ore - Google Patents
Beneficiation process of recovering associated silver from lead-zinc-sliver sulfide ore Download PDFInfo
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- CN103041924A CN103041924A CN2012105738817A CN201210573881A CN103041924A CN 103041924 A CN103041924 A CN 103041924A CN 2012105738817 A CN2012105738817 A CN 2012105738817A CN 201210573881 A CN201210573881 A CN 201210573881A CN 103041924 A CN103041924 A CN 103041924A
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Abstract
The invention relates to a beneficiation process, in particular to a beneficiation process of recovering associated silver from lead-zinc-sliver sulfide ore. The process includes: (a) lead roughing, allowing raw ore to enter a flotation unit, and selecting lead rougher tailings and lead rough concentrate; (b) scavenging I B sulfur nitrogen 36-40g/t, and using composite reagent 5g/t to select scavenged I tailings and scavenged I concentrate; (c) scavenging II B sulfur nitrogen 10-17g/t, and selecting scavenged II tailings and scavenged II concentrate; (d) grinding the scavenged II tailings, entering scavenging III, selecting scavenged III tailings and scavenged III concentrate; (e) fine selecting I lime 2kg/t to select lead cleaner tailings and lead cleaner concentrate; and (f) fine selecting II to select lead cleaner tailings and final lead concentrate. By means of the beneficiation process of recovering associated silver from lead-zinc-sliver sulfide ore, recovery rate of lead concentrate silver can be increased greatly.
Description
Technical field
The present invention relates to a kind of ore-dressing technique, particularly a kind of ore-dressing technique that from the plumbous zinc-silver sulphide ore that contains high-sulfur, reclaims associated silver.
Background technology
Ore dressing is most important link during whole mineral products are produced, and is the key sector in the enterprise of ore deposit.General large ore enterprise all be comprehensively adopt, the resource enterprise of choosing, smelting.With physics or chemical method with the valuable mineral in the raw mineral materials and useless mineral (usually claiming gangue) or toxic mineral separately, or the technical process that multiple valuable mineral is separated just is called ore dressing, claims again " mineral processing ".In the product, the title concentrate of useful component enrichment; The title mine tailing of useless one-tenth separating/enriching; The content of useful component needs the title chats of further processing between concentrate and tailings.The metalliferous mineral concentrate extracts the raw material of metal mainly as smelting industry; The nonmetallic mineral concentrate is as other industrial raw material; The selected product of coal is cleaned coal.Ore dressing can significantly improve the quality of raw mineral materials, reduces freight, alleviates the difficulty of further processing, reduces processing cost, and can realize the comprehensive utilization of raw mineral materials.Because world's mineral resources are day by day poor, utilize more and more lean ore and complicated ore, the ore amount that therefore needs ore dressing to process is increasing.At present, except the minority high-grade ore, metal and nonmetal deposits stone nearly all needs ore dressing.
Silver metal normal and other metallic ore association or symbiosis become seldom separately ore deposit (minority can become separately the ore deposit).Silver metal belongs to noble metal, and recycling to greatest extent silver metal is one of the main wound effect measure in mine.The Lancang, yunnan lead ore is take lead and zinc ores as main, silver-colored association, and the sulphide ore of a small amount of copper symbiosis is main production mineral resources.When noble silver is enriched in other concentrate, must reaches certain grade and just valuate, when diffeential floatation was plumbous, silver was enriched in the lead concentrate in a large number, obtains the higher silver metal of grade, separately valuation of silver metal during sale; And the silver-colored grade enrichment in the zinc concentrate must be lower, and is without charge in print, just separately valuation when being enriched in the silver metal sale in the lead concentrate.In order to make the as far as possible enrichment in lead concentrate of associated silver metal, reduce zinc concentrate and mine tailing argentiferous grade, to improve the silver metal recovery rate in ore-dressing, obtain larger economic benefit.
Ore-dressing technique mainly adopts selective flotation flowsheet, i.e. diffeential floatation is plumbous, the chats rear flotation zinc of regrinding.Raw ore sulfur-bearing grade 25%～28%, leaded grade 2.5%-2.8% contains zinc grade 2.6%-3.0%, argentiferous grade 145g/t-165 g/t, the main and plumbous association of this ore silver.Diethyldithiocarbamate and 541(xanthate class are mainly adopted in the ore dressing plant) collecting agent is as collecting agent, and associated silver metal recovery rate in ore-dressing mainly can reach 50-60%, the space that can continue to improve in addition.Collecting agent uses the higher diethyldithiocarbamate of great amount of cost price, causes production cost large, is unfavorable for reducing the demand of real cost of production.Need to save the rate of recovery that improves again associated silver under the prerequisite of production cost in the actual production.
Summary of the invention
In order to overcome the above-mentioned shortcoming of prior art, the invention provides a kind of ore-dressing technique that from the plumbous zinc-silver sulphide ore that contains high-sulfur, reclaims associated silver, it has good collecting effect to the sulphide ore associated silver, and the recovery rate in ore-dressing of energy Effective Raise silver metal effectively reduces production costs.
The technical solution adopted for the present invention to solve the technical problems,
Be used for containing the silver-colored ore-dressing technique of plumbous zinc-silver sulphide ore recovery of high-sulfur, adopt following steps to carry out:
(a) lead is roughly selected, raw ore behind the ball milling is put into flotation cell, raw ore enters the flotation unit, add lime 13kg/t, zinc sulfate 700～850g/t, sodium carbonate 380～530g/t, diethyldithiocarbamate 100～125g/t, composite drug 10～38g/t, terpenic oil 10g/t by raw ore per ton, select plumbous rougher tailings and plumbous rough concentrate, plumbous rough concentrate carries out selected, and plumbous rougher tailings is scanned.
(b) plumbous rougher tailings is scanned I diethyldithiocarbamate 36～40g/t, and composite drug 5g/t selects and scans the I mine tailing and scan the I concentrate.
(c) scan II diethyldithiocarbamate 10～17g/t, select and scan the II mine tailing and scan the II concentrate.
(d) scan II tailing regrind (fineness is 77%) after, enter and scan III, diethyldithiocarbamate 5～8g/t, composite drug 5～7g/t select and scan the III mine tailing and scan the III concentrate.
(e) plumbous rough concentrate carries out selected I lime 2kg/t, selects plumbous cleaner tailings and plumbous selected concentrate.
(f) selected II is selected plumbous cleaner tailings and final lead concentrate.
Described composite drug is for being prepared from by the following method:
1. sodium carbonate being mixed with concentration at normal temperatures with clear water is 10% sodium carbonate liquor, the pH value of described clear water=7;
2. the 1 times amount of aniline black powder according to the sodium carbonate quality is dissolved in the above-mentioned sodium carbonate liquor, stir leave standstill 30 minutes after 5 minutes after, adding clear water dilution concentration of aniline is 3%;
3. the butyl ammonium aerofloat that in above-mentioned mixed solution, adds 2 times of amounts of sodium carbonate quality;
4. adding clear water dilution mixed solution concentration and be 2% namely obtains.
This ore-dressing technique adopts floatation concentration 30%, fineness 72%(-200 order content), pH value 10～11.Floating agent comprises that the plumbous employing of choosing diethyldithiocarbamate is main collecting agent, and composite drug is supplementary catching agent, and lime is adjusting agent, and zinc sulfate and sodium carbonate are the zinc mineral inhibitor, and terpenic oil is foaming agent; Adopting copper sulphate when selecting zinc is activator, and Isobutylxanthic acid is collecting agent, and terpenic oil is foaming agent.
In floatation process, we will scrape the foam with the ore particulate that floats, and with a large amount of medicaments, along with scraping of foam, the medicament in the ore pulp of back reduces relatively, so need to add in the back at foam.The second, excessive interpolation medicament in front, medicament is excessive, and overdose of medicine agent meeting is useless or get up without mineral and the gangue collecting of economic worth to other, causes concentrate grade too low, affects selling price.The the 3rd: because the flotation speed of some ore particle is slower, need to adds in the back some medicaments and reclaim this part ore particle.
For the technical study that is fit to this ore properties with silver is had the research and development of strong collecting ability medicament.Now confirm that by mineral processing production this medicament and method can significantly improve the lead concentrate silver raising recovery rate.
The present invention has following beneficial effect: 1. this process reduces the use of expensive diethyldithiocarbamate, reduces simultaneously the use amount of other medicaments, reduces cost; 2. in the situation that reduces the medicament use, Effective Raise lead concentrate silver raising recovery rate 8～17% reaches more than 75%; 3. the segmentation interpolation is higher than the concentrate grade of disposable interpolation, and it is high a lot of that the rate of recovery is also wanted, and is exactly that the segmentation interpolation is more much better than the index of disposable interpolation, the effective rate of utilization of Effective Raise medicament.
The selected medicament of the present invention and common floating agent and method contrast:
As seen from the table, with the selected medicament of the present invention and method, flotation of lead zinc association silver ore, the plumbous grade of lead concentrate reaches more than 52%, and lead recovery reaches 88.43%, and silver-colored grade reaches 2382g/t, and the rate of recovery reaches 75.86%; Compared with the method for floating of former use and to have significantly improved.
Description of drawings
Fig. 1 is mineral processing circuit figure of the present invention.
Embodiment
Embodiment 1
As shown in Figure 1, be used for containing the silver-colored ore-dressing technique of plumbous zinc-silver sulphide ore recovery of high-sulfur, adopt following steps to carry out:
(a) lead is roughly selected, raw ore enters the flotation unit, add lime 13kg/t, zinc sulfate 800g/t, sodium carbonate 500g/t, diethyldithiocarbamate 120g/t, composite drug 20g/t, terpenic oil 10g/t by raw ore per ton, select plumbous rougher tailings and plumbous rough concentrate, plumbous rough concentrate carries out selected, and plumbous rougher tailings is scanned; The lead concentrate silver raising recovery rate is 70%～74%.
(b) scan I diethyldithiocarbamate 40g/t, composite drug 5g/t selects and scans the I mine tailing and scan the I concentrate, and the lead concentrate silver raising recovery rate is 2%～4%.
(c) scan II diethyldithiocarbamate 15g/t, select and scan the II mine tailing and scan the II concentrate, the lead concentrate silver raising recovery rate is 0.5%～1%.
(d) scan II tailing regrind (fineness is 77%) after, enter and scan III, diethyldithiocarbamate 5g/t, composite drug 5g/t select and scan III mine tailing and scan the III concentrate, the lead concentrate silver raising recovery rate is 0.2%～0.5%.
(e) selected I lime 2kg/t selects plumbous cleaner tailings and plumbous selected concentrate, and the lead concentrate silver raising recovery rate is 71.8%～78.5%.
(f) selected II is selected plumbous cleaner tailings and final lead concentrate, and the lead concentrate silver raising recovery rate is 71%～77.5%.
The above-mentioned plumbous selected concentrate of at every turn scanning out carries out above dressing process twice, and the plumbous cleaner tailings of scanning out carries out the technique of scanning more than twice.
Described composite drug is for being prepared from by the following method:
1. sodium carbonate being mixed with concentration at normal temperatures with clear water is 10% sodium carbonate liquor, the pH value of described clear water=7;
2. the 1 times amount of aniline black powder according to the sodium carbonate quality is dissolved in the above-mentioned sodium carbonate liquor, stir leave standstill 30 minutes after 5 minutes after, adding clear water dilution concentration of aniline is 3%;
3. the butyl ammonium aerofloat that in above-mentioned mixed solution, adds 2 times of amounts of sodium carbonate quality;
4. adding clear water dilution mixed solution concentration and be 2% namely obtains.
This ore-dressing technique adopts floatation concentration 30%, fineness 72%(-200 order content), pH value 10～11.Floating agent comprises that the plumbous employing of choosing diethyldithiocarbamate is main collecting agent, and composite drug is supplementary catching agent, and lime is adjusting agent, and zinc sulfate and sodium carbonate are the zinc mineral inhibitor, and terpenic oil is foaming agent; Adopting copper sulphate when selecting zinc is activator, and Isobutylxanthic acid is collecting agent, and terpenic oil is foaming agent.
Embodiment 2
The specific embodiment is with embodiment 1, and difference is:
(a) lead is roughly selected, raw ore enters the flotation unit, add lime 13kg/t, zinc sulfate 730g/t, sodium carbonate 400g/t, diethyldithiocarbamate 115g/t, composite drug 23g/t, terpenic oil 10g/t by raw ore per ton, select plumbous rougher tailings and plumbous rough concentrate, plumbous rough concentrate carries out selected, and plumbous rougher tailings is scanned; The lead concentrate silver raising recovery rate is 70%～74%.
(b) scan I diethyldithiocarbamate 36g/t, composite drug 5g/t selects and scans the I mine tailing and scan the I concentrate, and the lead concentrate silver raising recovery rate is 2%～4%.
(c) scan II diethyldithiocarbamate 11g/t, select and scan the II mine tailing and scan the II concentrate, the lead concentrate silver raising recovery rate is 0.5%～1%.
(d) scan II tailing regrind (fineness is 77%) after, enter and scan III, diethyldithiocarbamate 6g/t, composite drug 6g/t select and scan the III mine tailing and scan the III concentrate.
(e) selected I lime 2kg/t selects plumbous cleaner tailings and plumbous selected concentrate, and the lead concentrate silver raising recovery rate is 71.8%～78.5%.
(f) selected II is selected plumbous cleaner tailings and final lead concentrate, and the lead concentrate silver raising recovery rate is 71%～77.5%.
Embodiment 3
The specific embodiment is with embodiment 1, and difference is:
(a) lead is roughly selected, raw ore enters the flotation unit, add lime 13kg/t, zinc sulfate 850g/t, sodium carbonate 530g/t, diethyldithiocarbamate 125g/t, composite drug 38g/t, terpenic oil 10g/t by raw ore per ton, select plumbous rougher tailings and plumbous rough concentrate, plumbous rough concentrate carries out selected, and plumbous rougher tailings is scanned; The lead concentrate silver raising recovery rate is 70%～74%.
(b) scan I diethyldithiocarbamate 40g/t, composite drug 5g/t selects and scans the I mine tailing and scan the I concentrate, and the lead concentrate silver raising recovery rate is 2%～4%.
(c) scan II diethyldithiocarbamate 17g/t, select and scan the II mine tailing and scan the II concentrate, the lead concentrate silver raising recovery rate is 0.5%～1%.
(d) scan II tailing regrind (fineness is 77%) after, enter and scan III, diethyldithiocarbamate 8g/t, composite drug 7g/t select and scan the III mine tailing and scan the III concentrate.
(e) selected I lime 2kg/t selects plumbous cleaner tailings and plumbous selected concentrate, and the lead concentrate silver raising recovery rate is 71.8%～78.5%.
(f) selected II is selected plumbous cleaner tailings and final lead concentrate, and the lead concentrate silver raising recovery rate is 71%～77.5%.
Embodiment 4
The specific embodiment is with embodiment 2, and difference is:
(a) lead is roughly selected, raw ore enters the flotation unit, add lime 13kg/t, zinc sulfate 730g/t, sodium carbonate 380g/t, diethyldithiocarbamate 100g/t, composite drug 10g/t, terpenic oil 10g/t by raw ore per ton, select plumbous rougher tailings and plumbous rough concentrate, plumbous rough concentrate carries out selected, and plumbous rougher tailings is scanned; The lead concentrate silver raising recovery rate is 70%～74%.
(b) scan I diethyldithiocarbamate 36g/t, composite drug 5g/t selects and scans the I mine tailing and scan the I concentrate, and the lead concentrate silver raising recovery rate is 2%～4%.
(c) scan II diethyldithiocarbamate 10g/t, select and scan the II mine tailing and scan the II concentrate, the lead concentrate silver raising recovery rate is 0.5%～1%.
(d) scan II tailing regrind (fineness is 77%) after, enter and scan III, diethyldithiocarbamate 5g/t, composite drug 5g/t select and scan the III mine tailing and scan the III concentrate.
(e) selected I lime 2kg/t selects plumbous cleaner tailings and plumbous selected concentrate, and the lead concentrate silver raising recovery rate is 71.8%～78.5%.
(f) selected II is selected plumbous cleaner tailings and final lead concentrate, and the lead concentrate silver raising recovery rate is 71%～77.5%.
Claims (5)
1. be used for containing the silver-colored ore-dressing technique of plumbous zinc-silver sulphide ore recovery of high-sulfur, adopt following steps to carry out:
(a) lead is roughly selected, raw ore enters the flotation unit, add lime 13kg/t, zinc sulfate 700～850g/t, sodium carbonate 380～530g/t, diethyldithiocarbamate 100～125g/t, composite drug 10～38g/t, terpenic oil 10g/t by raw ore per ton, select plumbous rougher tailings and plumbous rough concentrate, plumbous rough concentrate carries out selected, and plumbous rougher tailings is scanned;
(b) plumbous rougher tailings is scanned I diethyldithiocarbamate 36～40g/t, and composite drug 5g/t selects and scans the I mine tailing and scan the I concentrate;
(c) scan II diethyldithiocarbamate 10～17g/t, select and scan the II mine tailing and scan the II concentrate;
(d) scan II tailing regrind (fineness is 77%) after, enter and scan III, diethyldithiocarbamate 5～8g/t, composite drug 5～7g/t select and scan the III mine tailing and scan the III concentrate;
(e) plumbous rough concentrate carries out selected I lime 2kg/t, selects plumbous cleaner tailings and plumbous selected concentrate;
(f) selected II is selected plumbous cleaner tailings and final lead concentrate;
Described composite drug mainly is comprised of following raw material: sodium carbonate in mass ratio: the aniline black powder: butylamine black powder=1:1:2.
2. the composite drug in the ore-dressing technique of the plumbous zinc-silver sulphide ore recovery silver for containing high-sulfur as claimed in claim 1 adopts following method to be prepared from:
1. sodium carbonate being mixed with concentration at normal temperatures with clear water is 10% sodium carbonate liquor, the pH value of described clear water=7;
2. the 1 times amount of aniline black powder according to the sodium carbonate quality is dissolved in the above-mentioned sodium carbonate liquor, stir leave standstill 30 minutes after 5 minutes after, adding clear water dilution concentration of aniline is 3%;
3. the butyl ammonium aerofloat that in above-mentioned mixed solution, adds 2 times of amounts of sodium carbonate quality;
4. adding clear water dilution mixed solution concentration and be 2% namely obtains.
3. the plumbous zinc-silver sulphide ore for containing high-sulfur as claimed in claim 1 or 2 reclaims the ore-dressing technique of silver, it is characterized in that: (a) lead is roughly selected, raw ore enters the flotation unit, add lime 13kg/t, zinc sulfate 800～850g/t, sodium carbonate 400～500g/t, diethyldithiocarbamate 100～120g/t, composite drug 10～20g/t, terpenic oil 10g/t by raw ore per ton, select plumbous rougher tailings and plumbous rough concentrate, plumbous rough concentrate carries out selected, and plumbous rougher tailings is scanned.
4. the plumbous zinc-silver sulphide ore for containing high-sulfur as claimed in claim 1 or 2 reclaims the ore-dressing technique of silver, it is characterized in that: the plumbous selected concentrate of at every turn scanning out carries out above dressing process again twice, and the plumbous cleaner tailings of scanning out carries out the technique of scanning more than twice again.
5. the plumbous zinc-silver sulphide ore for containing high-sulfur as claimed in claim 3 reclaims the ore-dressing technique of silver, it is characterized in that: the plumbous selected concentrate of at every turn scanning out carries out above dressing process again twice, and the plumbous cleaner tailings of scanning out carries out the technique of scanning more than twice again.
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Cited By (10)
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| CN104624388A (en) * | 2013-11-13 | 2015-05-20 | 甘肃中盛矿业有限责任公司 | Agent improvement method used in silver and zinc compound ore flotation process |
| CN106076604A (en) * | 2016-07-22 | 2016-11-09 | 西藏金和矿业有限公司 | The ore-dressing technique of a kind of Pb-Zn-Ag ore and floating agent thereof |
| CN106146549A (en) * | 2015-04-02 | 2016-11-23 | 中国科学院宁波材料技术与工程研究所 | Bio-based alkylthio phosphoric acid or derivatives thereof, its preparation method and application |
| CN106423572A (en) * | 2016-11-30 | 2017-02-22 | 长春黄金研究院 | Lead zinc ore flotation method adopting novel combined inhibitor |
| CN109647628A (en) * | 2019-01-28 | 2019-04-19 | 中南大学 | Application of the 1,3,4- thiadiazole compound in sulfide flotation |
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| CN113019710A (en) * | 2021-03-15 | 2021-06-25 | 中国恩菲工程技术有限公司 | Combined collecting agent and flotation method of sulfide mineral containing micro-fine particles |
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| CN104624388A (en) * | 2013-11-13 | 2015-05-20 | 甘肃中盛矿业有限责任公司 | Agent improvement method used in silver and zinc compound ore flotation process |
| CN106146549A (en) * | 2015-04-02 | 2016-11-23 | 中国科学院宁波材料技术与工程研究所 | Bio-based alkylthio phosphoric acid or derivatives thereof, its preparation method and application |
| CN106076604A (en) * | 2016-07-22 | 2016-11-09 | 西藏金和矿业有限公司 | The ore-dressing technique of a kind of Pb-Zn-Ag ore and floating agent thereof |
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| CN111036393A (en) * | 2019-12-04 | 2020-04-21 | 北京矿冶科技集团有限公司 | Combined collecting agent and beneficiation method for recovering copper, lead and silver from copper, lead, zinc and silver polymetallic ore |
| CN111036393B (en) * | 2019-12-04 | 2022-04-26 | 北京矿冶科技集团有限公司 | Combined collecting agent and beneficiation method for recovering copper, lead and silver from copper, lead, zinc and silver polymetallic ore |
| CN111558469A (en) * | 2020-04-28 | 2020-08-21 | 西北矿冶研究院 | Beneficiation reagent for copper and lead flotation of copper and lead ores and preparation method thereof |
| CN111558469B (en) * | 2020-04-28 | 2022-03-29 | 西北矿冶研究院 | Beneficiation reagent for copper and lead flotation of copper and lead ores and preparation method thereof |
| CN112547312A (en) * | 2020-11-20 | 2021-03-26 | 内蒙古光大矿业有限责任公司 | Flotation method for silver, lead and zinc ores mainly based on sphalerite |
| CN113019710A (en) * | 2021-03-15 | 2021-06-25 | 中国恩菲工程技术有限公司 | Combined collecting agent and flotation method of sulfide mineral containing micro-fine particles |
| CN113798050A (en) * | 2021-08-10 | 2021-12-17 | 北京矿酷数科信息技术有限公司 | Beneficiation method for silver-lead-zinc ore |
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