CN1285416C - Flotation method for sulfidization-oxidization mixed lead-zinc ore - Google Patents
Flotation method for sulfidization-oxidization mixed lead-zinc ore Download PDFInfo
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- CN1285416C CN1285416C CN 200410023272 CN200410023272A CN1285416C CN 1285416 C CN1285416 C CN 1285416C CN 200410023272 CN200410023272 CN 200410023272 CN 200410023272 A CN200410023272 A CN 200410023272A CN 1285416 C CN1285416 C CN 1285416C
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Abstract
The present invention relates to a flotation method for sulfidization-oxidization mixed lead-zinc ore. The lead flotation adopts the processes of one-step fast selection, two-step rough selection, one-step scanning selection and three-step fine selection; the ore pulp pH value of the whole flotation process keeps pH larger than 11. Zinc flotation adopts the processes of one-step fast selection, one-step rough selection, one-step scanning selection and two-step fine selection; the ore pulp pH value of the whole flotation process keeps pH larger than 12. The flotation method enhances the recovery rate of whole lead-zinc ore and fine ore quality, enhances flotation efficiency, and reduces flotation equipment and energy consumption correspondingly to a traditional flotation technique for sulfidization lead-zinc ore and oxidization lead-zinc ore. For the lead-zinc ore with an oxidization rate of more than 30%, a Pb recovery rate and a Zn recovery rate are enhanced by more than 10%.
Description
Technical field
The present invention relates to a kind of vulcanization-oxidization mixed lead zinc ore floating method.
Background technology
The plumbous zinc resource of China is abundant, but major part belongs to vulcanization-oxidization mixed lead zinc ore type, have plumbous zinc oxygenation efficiency height and form complicated characteristics, the method for floating of employing routine produces lead concentrate and there are problems such as plumbous zinc recovery is low, beneficiation reagent consumption big, deficiency in economic performance in zinc concentrate.Traditional lead-zinc ore floating technology has only been considered the flotation of lead-zinc sulfide ore, and only considers to adopt activator to activate for lead-zinc, adopts common sulfide mineral collector to carry out flotation then.Floatation process control parameter has only medicament kind concentration and slurry pH, ignore the plumbous zinc mineral of vulcanization-oxidization and mixed a series of characteristics in back, in whole floatation process a series of redox reaction can take place as lead-zinc sulfide ore, make that different lead zinc sulphur ores has different flotation rate in the same ore, can obtain the lead concentrate and the zinc concentrate of different grades in different flotation flowsheet positions; And lead-zinc can dissolve in floatation process, the flotation that influences plumbous zinc with separate, need adopt efficiently that the oxide ore collecting agent mixes use with sulfide mineral collector, could improve the rate of recovery and the concentrate quality of whole plumbous zinc ore.
Summary of the invention
In order to improve the efficient that vulcanization-oxidization mixed lead zinc ore floating separates, special proposition the present invention.
Vulcanization-oxidization mixed lead zinc ore floating separation method of the present invention comprises the FLOTATION SEPARATION to plumbous zinc, and concrete technological parameter is as follows:
Adopt wet ball mill to carry out the selective milling of vulcanization-oxidization mixed lead zinc ore, the granularity of ore milling product accounts for about 75～90% for-0.074mm, ore milling product is without desliming, directly enter flotation, floatation concentration is 25～35%, plumbum floatation adopts the once flow process of choosing soon, one roughing, once purging selection and triple cleaning, and the mash acid alkalinity of whole floatation process keeps pH＞11.The once flow process of choosing soon, one roughing, once purging selection and recleaning is adopted in the zinc flotation, and the mash acid alkalinity of whole floatation process keeps pH＞12.
Described plumbum floatation hybrid collector is diethyldithiocarbamate and benzene hydroxamic acid.The diethyldithiocarbamate molecular formula is: (C
2H
5)
2NCSSNa, it is strong to the galena collecting ability, to pyrite and lead-zinc stone collecting ability a little less than; Benzene hydroxamic acid molecular formula is: (C
6H
11) CO (NH
2OH), benzene hydroxamic acid fusing point is about 65～70 ℃, and facile hydrolysis is NH
2OH and carboxylic acid, benzene hydroxamic acid energy and pb
2+Ion generates chelate and has the collecting performance, and is strong to the lead oxide ore collecting ability, benzene hydroxamic acid and Zn
2+Ion does not react, so inoperative to zinc oxide ore.In grinding process, add diethyldithiocarbamate 30-80g/t raw ore, adding pH adjustment agent simultaneously makes pH values of pulp keep 11-12, utilize this condition, the sulfuration lead ore in diethyldithiocarbamate and the vulcanization-oxidization mixed lead zinc ore is had an effect, and do not react with zinc sulfide ore, pyrites; In floatation process, add benzene hydroxamic acid 20-50g/t raw ore, foaming agent is that terpenic oil (consumption 30-40g/t) reclaims, the basicity environment (pH＞11.0) that keeps flotation pulp, change lead minerals surface and zinc mineral surface hydrophilic/hydrophobic property in the vulcanization-oxidization mixed lead zinc ore, make zinc mineral, pyrites surface hydrophilic, and do not have an effect with flotation collector; The lead minerals surface hydrophobicity can FLOTATION SEPARATION go out lead concentrate.
After the lead minerals flotation, add lime 3000-6000g/t, copper sulphate 200-400g/t and butyl xanthate 60-120g/t FLOTATION SEPARATION zinc mineral.
Traditional relatively lead-zinc sulfide ore and Flotation of Lead Oxide and Zinc Oxide Ores technology, the present invention adopts efficiently that oxide ore collecting agent and sulfide mineral collector are used, and has cancelled the activator of lead-zinc, has improved the rate of recovery and the concentrate quality of whole plumbous zinc ore.Utilize the different characteristics of lead zinc sulphur ore flotation rate in the mixed ore, adopt the method for fast-flotation to obtain fast lead concentrate and fast zinc concentrate, obtain final concentrate, improved flotation efficiency, reduced floatation equipment and energy consumption with the cleaning technological flowasheet merging.To oxygenation efficiency is plumbous zinc ore more than 30%, and adopting the present invention can obtain the Pb grade is 50-55%, rate of recovery 75-80%; Zinc concentrate grade Zn is 45-50%; Rate of recovery 80-85% compares with conventional method, and Pb, the Zn rate of recovery improve more than 10%.
Description of drawings
Fig. 1: process flow diagram of the present invention.
The specific embodiment
Embodiment 1:
Use raw ore to contain the plumbous zinc ore in Yunnan of Pb4.11%, Zn4.65%, plumbous zinc mineral oxygenation efficiency is 34%, and process system is: the granularity of ore milling product accounts for about 86% for-0.074mm, and the acid-base value of ore grinding system is controlled at pH greater than 11.5, the acid-base value of flotation system is controlled at pH greater than 11; With diethyldithiocarbamate (consumption 40g/t) and benzene hydroxamic acid (consumption 20g/t) is collecting agent, carries out flotation and can obtain lead concentrate, and its grade Pb is 55%, the rate of recovery 80%; Zinc concentrate grade Zn is 48% (marmatite concentrate); The rate of recovery 85%.
Claims (1)
1. vulcanization-oxidization mixed lead zinc ore floating method, it is characterized in that: comprise the FLOTATION SEPARATION to plumbous zinc, concrete technological parameter is as follows:
Adopt wet ball mill to carry out the selective milling of vulcanization-oxidization mixed lead zinc ore, the granularity of ore milling product accounts for 75～90% for-0.074mm, ore milling product is without desliming, directly enter flotation, floatation concentration is 25～35%, plumbum floatation adopts the once flow process of choosing soon, one roughing, once purging selection and triple cleaning, and the mash acid alkalinity of whole floatation process keeps pH＞11; The once flow process of choosing soon, one roughing, once purging selection and recleaning is adopted in the zinc flotation, and the mash acid alkalinity of whole floatation process keeps pH＞12;
In grinding process, add diethyldithiocarbamate 30-80g/t raw ore, adding pH adjustment agent simultaneously makes pH values of pulp keep 11-12, in floatation process, add benzene hydroxamic acid 20-50g/t raw ore, foaming agent terpenic oil consumption 30-40g/t, basicity environment pH＞11.0 that keep flotation pulp, after the lead minerals flotation, add lime 3000-6000g/t, copper sulphate 200-400g/t and butyl xanthate 60-120g/t FLOTATION SEPARATION zinc mineral.
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| CN 200410023272 CN1285416C (en) | 2004-06-03 | 2004-06-03 | Flotation method for sulfidization-oxidization mixed lead-zinc ore |
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| CN 200410023272 CN1285416C (en) | 2004-06-03 | 2004-06-03 | Flotation method for sulfidization-oxidization mixed lead-zinc ore |
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| CN1704170A CN1704170A (en) | 2005-12-07 |
| CN1285416C true CN1285416C (en) | 2006-11-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101327465B (en) * | 2008-07-25 | 2011-02-16 | 紫金矿业集团股份有限公司 | Flotation reagent and method of complex lead oxide ore |
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| CN100391616C (en) * | 2006-02-09 | 2008-06-04 | 陈铁 | Beneficiation method for zinc oxide mine |
| CN101190426B (en) * | 2006-11-24 | 2010-04-14 | 中南大学 | Vulcanization-oxidization mixing copper ore floatation method |
| CN101125311B (en) * | 2007-09-24 | 2010-09-01 | 昆明理工大学 | Vulcanizing-flotation combing method for treating zinc kiln slag |
| 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 |
| CN101745468B (en) * | 2010-01-27 | 2014-08-13 | 紫金矿业集团股份有限公司 | Beneficiation method for improving recovery rate of low-grade zinc oxide ore |
| CN101786049A (en) * | 2010-04-13 | 2010-07-28 | 中南大学 | Flotation method of lead-zinic-sulphide ore with high oxygenation efficiency |
| CN101816978B (en) * | 2010-05-26 | 2012-09-05 | 中南大学 | Method for lead-zinc oxide ore flotation |
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| CN104014420B (en) * | 2014-06-10 | 2016-03-02 | 李锦源 | The method of the many metal recovery of a kind of low-grade oxysulphied Pb-Zn deposits |
| CN105013601B (en) * | 2015-07-06 | 2017-05-31 | 肖红岸 | The beneficiation method of mud lead zinc oxysulphied ore deposit high |
| CN107537695A (en) * | 2017-08-14 | 2018-01-05 | 内蒙古森泰企业咨询有限公司 | A kind of method for improving complex lead zinc ores metal recovery rate |
| CN108787179A (en) * | 2018-06-21 | 2018-11-13 | 中国恩菲工程技术有限公司 | The system for handling Pb-Zn deposits |
| CN109482361A (en) * | 2018-12-12 | 2019-03-19 | 北京矿冶科技集团有限公司 | A kind of method that lead-zinc sulphur oxygen synchronizes flotation |
| CN109647615B (en) * | 2018-12-29 | 2020-03-20 | 南京银茂铅锌矿业有限公司 | Beneficiation method and beneficiation system for improving recovery rate of refractory zinc concentrate |
| CN111330741B (en) * | 2020-03-09 | 2022-01-28 | 中南大学 | Synchronous flotation method for oxidized-vulcanized mixed zinc ore |
| CN111558467B (en) * | 2020-04-28 | 2022-07-15 | 西北矿冶研究院 | Beneficiation reagent for lead and zinc oxide lead-zinc ore flotation and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101327465B (en) * | 2008-07-25 | 2011-02-16 | 紫金矿业集团股份有限公司 | Flotation reagent and method of complex lead oxide ore |
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