CN103041924B - 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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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 reclaiming associated silver from the plumbous zinc-silver sulphide ore containing high-sulfur.
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 be all comprehensively adopt, select, the resource-based enterprises of smelting.With physics or chemical method by the valuable mineral in 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, also known as " mineral processing ".In product, the title concentrate of useful component enrichment; The title mine tailing of unwanted contributions enrichment; The content of useful component, between concentrate and tailings, needs the title chats of process further.Metalliferous mineral concentrate extracts the raw material of metal mainly as smelting industry; Nonmetallic mineral concentrate is as the raw material of other industry; 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 process further, reduces processing cost, and can realize the comprehensive utilization of raw mineral materials.Because world fossil resource is day by day poor, utilize lean ore and complicated ore more and more, therefore need the ore amount of ore dressing process increasing.At present, except 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 ore deposit separately).Silver metal belongs to noble metal, and recycling silver metal is to greatest extent one of the main wound effect measure in mine.Lancang, yunnan lead ore is based on lead and zinc ores, 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 is plumbous, silver is enriched in lead concentrate in a large number, obtains the higher silver metal of grade, and during sale, silver metal must be valuated separately; And the silver-colored grade enrichment in zinc concentrate must be lower, without charge in print, just valuate separately when the silver metal be enriched in lead concentrate is sold.In order to make the enrichment in lead concentrate as far as possible of associated silver metal, reducing zinc concentrate and mine tailing argentiferous grade, to improve silver metal recovery rate in ore-dressing, obtaining larger economic benefit.
Ore-dressing technique mainly adopts selective flotation flowsheet, and namely diffeential floatation is plumbous, flotation zinc after middling ore regrinding.Raw ore sulfur-bearing grade 25% ~ 28%, leaded grade 2.5%-2.8%, containing zinc grade 2.6%-3.0%, argentiferous grade 145g/t-165 g/t, the silver-colored main and plumbous association of this ore.Ore dressing plant mainly adopts diethyldithiocarbamate and 541(xanthate class) collecting agent is as collecting agent, and associated silver metal recovery rate in ore-dressing mainly can reach 50-60%, can continue the space of improving in addition.Collecting agent uses the diethyldithiocarbamate that great amount of cost price is higher, causes production cost large, is unfavorable for the demand reducing real cost of production.The rate of recovery of associated silver is improved again under needing the prerequisite of saving production cost in 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 reclaiming associated silver from the plumbous zinc-silver sulphide ore containing high-sulfur, it has good collecting effect to sulphide ore associated silver, effectively can improve the recovery rate in ore-dressing of silver metal, effectively reduce production cost.
The technical solution adopted for the present invention to solve the technical problems,
For the ore-dressing technique containing recover silver in the plumbous zinc-silver sulphide ore of high-sulfur, following steps are adopted to carry out:
A () lead is roughly selected, raw ore after ball milling is put into flotation cell, raw ore enters flotation unit, 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 is added 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 scans I diethyldithiocarbamate 36 ~ 40g/t, composite drug 5g/t selects and scans I mine tailing and scan I concentrate.
C () scans II diethyldithiocarbamate 10 ~ 17g/t, select and scan II mine tailing and scan II concentrate.
D () enters and scans III, diethyldithiocarbamate 5 ~ 8g/t after scanning II tailing regrind (fineness is 77%), composite drug 5 ~ 7g/t selects and scans III mine tailing and scan III concentrate.
E () plumbous rough concentrate carries out selected I lime 2kg/t, select plumbous cleaner tailings and the selected concentrate of lead.
F () selected II, selects plumbous cleaner tailings and final lead concentrate.
Described composite drug is for be prepared from by the following method:
1. sodium carbonate clear water is mixed with the sodium carbonate liquor that concentration is 10% at normal temperatures, pH value=7 of described clear water;
2. be dissolved in above-mentioned sodium carbonate liquor by aniline aerofloat according to 1 times amount of sodium carbonate quality, stir after 5 minutes and leave standstill after 30 minutes, adding clear water dilution concentration of aniline is 3%;
3. in above-mentioned mixed solution, add the butyl ammonium aerofloat of sodium carbonate quality 2 times amount;
4. adding clear water dilution mixture solution concentration is 2% namely to obtain.
This ore-dressing technique adopts floatation concentration 30%, fineness 72%(-200 order content), pH value 10 ~ 11.It is main collecting agent that floating agent comprises choosing plumbous employing diethyldithiocarbamate, and composite drug is supplementary catching agent, and lime is adjusting agent, and zinc sulfate and sodium carbonate are zinc mineral inhibitor, and terpenic oil is foaming agent; Selecting during zinc adopts copper sulphate to be activator, and Isobutylxanthic acid is collecting agent, and terpenic oil is foaming agent.
In floatation process, the foam with ore particulate floated will scrape by we, and with a large amount of medicament on foam, along with scraping of foam, the medicament in ore pulp below reduces relatively, so need to add later.The second, can not at excessive interpolation medicament above, medicament is excessive, and overdose of medicine agent can be useless or get up without the mineral of economic worth and gangue collecting to other, causes concentrate grade too low, affect selling price.3rd: because the flotation speed of some ore particle is comparatively slow, need to add some medicaments below to reclaim this part ore particle.
For being applicable to the technical study of this ore properties and silver being had to the research and development of strong collecting ability medicament.Now confirmed by mineral processing production, this medicament and method can significantly improve lead concentrate silver raising recovery rate.
The present invention has following beneficial effect: 1. this process reduces the use of high cost diethyldithiocarbamate, reduces the use amount of other medicaments simultaneously, reduces costs; 2., when reducing medicament and using, effectively improve lead concentrate silver raising recovery rate 8 ~ 17%, reach more than 75%; 3. segmentation is added higher than the concentrate grade of disposable interpolation, and the rate of recovery also wants high a lot, is exactly that segmentation is added more much better than the index of disposable interpolation, effectively improves the effective rate of utilization of medicament.
Medicament selected by the present invention contrasts with common floating agent and method:
As seen from the table, by medicament selected by 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%; Have compared with the method for floating of former use and significantly improved.
Accompanying drawing explanation
Fig. 1 is mineral processing circuit figure of the present invention.
Embodiment
Embodiment 1
As shown in Figure 1, for the ore-dressing technique containing recover silver in the plumbous zinc-silver sulphide ore of high-sulfur, following steps are adopted to carry out:
A () lead is roughly selected, raw ore enters flotation unit, lime 13kg/t, zinc sulfate 800g/t, sodium carbonate 500g/t, diethyldithiocarbamate 120g/t, composite drug 20g/t, terpenic oil 10g/t is added 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; Lead concentrate silver raising recovery rate is 70% ~ 74%.
B () scans I diethyldithiocarbamate 40g/t, composite drug 5g/t selects and scans I mine tailing and scan I concentrate, and lead concentrate silver raising recovery rate is 2% ~ 4%.
C () scans II diethyldithiocarbamate 15g/t, select and scan II mine tailing and scan II concentrate, lead concentrate silver raising recovery rate is 0.5% ~ 1%.
D () enters and scans III, diethyldithiocarbamate 5g/t after scanning II tailing regrind (fineness is 77%), composite drug 5g/t selects and scans III mine tailing and scan III concentrate, and lead concentrate silver raising recovery rate is 0.2% ~ 0.5%.
E () selected I lime 2kg/t, select plumbous cleaner tailings and the selected concentrate of lead, lead concentrate silver raising recovery rate is 71.8% ~ 78.5%.
F () selected II, selects plumbous cleaner tailings and final lead concentrate, lead concentrate silver raising recovery rate is 71% ~ 77.5%.
The selected concentrate of the above-mentioned lead at every turn scanning out carries out the dressing process of more than twice, the plumbous cleaner tailings scanning out carry out more than twice scan technique.
Described composite drug is for be prepared from by the following method:
1. sodium carbonate clear water is mixed with the sodium carbonate liquor that concentration is 10% at normal temperatures, pH value=7 of described clear water;
2. be dissolved in above-mentioned sodium carbonate liquor by aniline aerofloat according to 1 times amount of sodium carbonate quality, stir after 5 minutes and leave standstill after 30 minutes, adding clear water dilution concentration of aniline is 3%;
3. in above-mentioned mixed solution, add the butyl ammonium aerofloat of sodium carbonate quality 2 times amount;
4. adding clear water dilution mixture solution concentration is 2% namely to obtain.
This ore-dressing technique adopts floatation concentration 30%, fineness 72%(-200 order content), pH value 10 ~ 11.It is main collecting agent that floating agent comprises choosing plumbous employing diethyldithiocarbamate, and composite drug is supplementary catching agent, and lime is adjusting agent, and zinc sulfate and sodium carbonate are zinc mineral inhibitor, and terpenic oil is foaming agent; Selecting during zinc adopts copper sulphate to be activator, and Isobutylxanthic acid is collecting agent, and terpenic oil is foaming agent.
Embodiment 2
Detailed description of the invention is with embodiment 1, and difference is:
A () lead is roughly selected, raw ore enters flotation unit, lime 13kg/t, zinc sulfate 730g/t, sodium carbonate 400g/t, diethyldithiocarbamate 115g/t, composite drug 23g/t, terpenic oil 10g/t is added 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; Lead concentrate silver raising recovery rate is 70% ~ 74%.
B () scans I diethyldithiocarbamate 36g/t, composite drug 5g/t selects and scans I mine tailing and scan I concentrate, and lead concentrate silver raising recovery rate is 2% ~ 4%.
C () scans II diethyldithiocarbamate 11g/t, select and scan II mine tailing and scan II concentrate, lead concentrate silver raising recovery rate is 0.5% ~ 1%.
D () enters and scans III, diethyldithiocarbamate 6g/t after scanning II tailing regrind (fineness is 77%), composite drug 6g/t selects and scans III mine tailing and scan III concentrate.
E () selected I lime 2kg/t, select plumbous cleaner tailings and the selected concentrate of lead, lead concentrate silver raising recovery rate is 71.8% ~ 78.5%.
F () selected II, selects plumbous cleaner tailings and final lead concentrate, lead concentrate silver raising recovery rate is 71% ~ 77.5%.
Embodiment 3
Detailed description of the invention is with embodiment 1, and difference is:
A () lead is roughly selected, raw ore enters flotation unit, lime 13kg/t, zinc sulfate 850g/t, sodium carbonate 530g/t, diethyldithiocarbamate 125g/t, composite drug 38g/t, terpenic oil 10g/t is added 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; Lead concentrate silver raising recovery rate is 70% ~ 74%.
B () scans I diethyldithiocarbamate 40g/t, composite drug 5g/t selects and scans I mine tailing and scan I concentrate, and lead concentrate silver raising recovery rate is 2% ~ 4%.
C () scans II diethyldithiocarbamate 17g/t, select and scan II mine tailing and scan II concentrate, lead concentrate silver raising recovery rate is 0.5% ~ 1%.
D () enters and scans III, diethyldithiocarbamate 8g/t after scanning II tailing regrind (fineness is 77%), composite drug 7g/t selects and scans III mine tailing and scan III concentrate.
E () selected I lime 2kg/t, select plumbous cleaner tailings and the selected concentrate of lead, lead concentrate silver raising recovery rate is 71.8% ~ 78.5%.
F () selected II, selects plumbous cleaner tailings and final lead concentrate, lead concentrate silver raising recovery rate is 71% ~ 77.5%.
Embodiment 4
Detailed description of the invention is with embodiment 2, and difference is:
A () lead is roughly selected, raw ore enters flotation unit, lime 13kg/t, zinc sulfate 730g/t, sodium carbonate 380g/t, diethyldithiocarbamate 100g/t, composite drug 10g/t, terpenic oil 10g/t is added 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; Lead concentrate silver raising recovery rate is 70% ~ 74%.
B () scans I diethyldithiocarbamate 36g/t, composite drug 5g/t selects and scans I mine tailing and scan I concentrate, and lead concentrate silver raising recovery rate is 2% ~ 4%.
C () scans II diethyldithiocarbamate 10g/t, select and scan II mine tailing and scan II concentrate, lead concentrate silver raising recovery rate is 0.5% ~ 1%.
D () enters and scans III, diethyldithiocarbamate 5g/t after scanning II tailing regrind (fineness is 77%), composite drug 5g/t selects and scans III mine tailing and scan III concentrate.
E () selected I lime 2kg/t, select plumbous cleaner tailings and the selected concentrate of lead, lead concentrate silver raising recovery rate is 71.8% ~ 78.5%.
F () selected II, selects plumbous cleaner tailings and final lead concentrate, lead concentrate silver raising recovery rate is 71% ~ 77.5%.
Claims (5)
1., for the ore-dressing technique containing recover silver in the plumbous zinc-silver sulphide ore of high-sulfur, adopt following steps to carry out:
A () lead is roughly selected, raw ore enters flotation unit, 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 is added 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 scans I diethyldithiocarbamate 36 ~ 40g/t, composite drug 5g/t selects and scans I mine tailing and scan I concentrate;
C () scans II diethyldithiocarbamate 10 ~ 17g/t, select and scan II mine tailing and scan II concentrate;
D () scans II tailing regrind, after fineness reaches 77%, enter and scan III, diethyldithiocarbamate 5 ~ 8g/t, and composite drug 5 ~ 7g/t selects and scans III mine tailing and scan III concentrate;
E () plumbous rough concentrate carries out selected I lime 2kg/t, select plumbous cleaner tailings and the selected concentrate of lead;
F () selected II, selects plumbous cleaner tailings and final lead concentrate;
Described composite drug, forms primarily of following raw material: sodium carbonate: aniline aerofloat in mass ratio: butylamine black powder=1:1:2.
2., as claimed in claim 1 for the ore-dressing technique containing recover silver in the plumbous zinc-silver sulphide ore of high-sulfur, it is characterized in that: described composite drug adopts following method to be prepared from:
1. sodium carbonate clear water is mixed with the sodium carbonate liquor that concentration is 10% at normal temperatures, pH value=7 of described clear water;
2. be dissolved in above-mentioned sodium carbonate liquor by aniline aerofloat according to 1 times amount of sodium carbonate quality, stir after 5 minutes and leave standstill after 30 minutes, adding clear water dilution concentration of aniline is 3%;
3. in above-mentioned mixed solution, add the butyl ammonium aerofloat of sodium carbonate quality 2 times amount;
4. adding clear water dilution mixture solution concentration is 2% namely to obtain.
3. as claimed in claim 1 or 2 for the ore-dressing technique containing recover silver in the plumbous zinc-silver sulphide ore of high-sulfur, it is characterized in that: (a) lead is roughly selected, raw ore enters flotation unit, 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 is added 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. as claimed in claim 1 or 2 for the ore-dressing technique containing recover silver in the plumbous zinc-silver sulphide ore of high-sulfur, it is characterized in that: the selected concentrate of the lead at every turn scanning out carries out the dressing process of more than twice again, the plumbous cleaner tailings scanning out carry out again more than twice scan technique.
5. as claimed in claim 3 for the ore-dressing technique containing recover silver in the plumbous zinc-silver sulphide ore of high-sulfur, it is characterized in that: the selected concentrate of the lead at every turn scanning out carries out the dressing process of more than twice again, the plumbous cleaner tailings scanning out carry out again more than twice scan technique.
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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 |
| CN106076604B (en) * | 2016-07-22 | 2019-05-17 | 西藏金和矿业有限公司 | A kind of ore-dressing technique and its floating agent of Pb-Zn-Ag ore |
| CN106423572A (en) * | 2016-11-30 | 2017-02-22 | 长春黄金研究院 | Lead zinc ore flotation method adopting novel combined inhibitor |
| CN109647628B (en) * | 2019-01-28 | 2020-03-10 | 中南大学 | Application of 1,3, 4-thiadiazole compound in sulfide ore flotation |
| 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 |
| 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 |
| CN112547312B (en) * | 2020-11-20 | 2022-08-02 | 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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| CN100361751C (en) * | 2006-06-19 | 2008-01-16 | 青岛黄金铅锌开发有限公司 | Method for floatation and recovery of lead zinc mixed concentrate from gold mine cyaniding slag tails |
| CN100537042C (en) * | 2006-11-24 | 2009-09-09 | 中南大学 | Complex plumbum, zinc, silver vulcanizing ore containing newboldite and pyrrhotite floatation method |
| CN101332447A (en) * | 2008-08-06 | 2008-12-31 | 紫金矿业集团股份有限公司 | Mineral separation process capable of increasing gold recovery in gold tailings |
| JP5046306B2 (en) * | 2008-08-27 | 2012-10-10 | 太平洋セメント株式会社 | Processing method and processing system for fine powder containing calcium component and lead component |
| CN101507951B (en) * | 2009-03-24 | 2013-04-24 | 西藏中凯矿业股份有限公司 | Mineral separation process capable of separating copper, lead, zinc polymetal sulphide ore |
| CN102744155B (en) * | 2012-08-06 | 2013-07-17 | 云南罗平锌电股份有限公司 | Method for comprehensively recovering lead and silver from lead slag |
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