西林铅锌矿浮选过程自动控制系统的研究

概述浮选过程自动控制和浮选电化学的发展现状之后，结合西林铅锌矿的浮选流程和试验室小型试验研究结果，提出了一种基于浮选电化学理论的浮选过程控制新策略。该控制系统能够根据矿浆氧化还原电位和药剂离子浓度在线调控浮选过程。西林铅锌矿应用该控制系统后，使铅、锌精矿质量分别由5、7级上升至4、6级，回收率分别提高2．94％和2．37％。     

原生电位调控浮选新工艺在锡铁山铅锌矿的应用

本文通过对原生电位调控浮选新工艺的概念进行了介绍,并对新工艺在实际生产中应用的效果进行了比较,阐述了原生电位调控浮选新工艺在锡铁山铅锌应用的必要性。     

铅锌硫化矿浮选过程清洁生产技术

针对目前国内外铅锌选矿普遍存在的资源利用率较低、废水尾矿对环境污染严重、选矿水电消耗较高的问题，铅锌硫化矿浮选过程清洁生产技术以清洁生产理论和硫化矿浮选理论为指导，采用电位调控浮选清沽分选新技术，提高铅锌硫化矿资源的综合利用率和减少选矿过程的能耗，节省选矿成本；采用水污染治理技术实现浮选废水适度净化后全部回用和零排放；采用固体废物处理技术实现了选矿尾矿综合利用和就地回填，实现尾矿零排放。该项目创造性地将铅锌硫化矿电位调控浮选清洁分选技术、废水净化处理回用技术、尾矿地下充填及综合利用技术有机结合。实现了选矿过程的清洁生产。     

难选氧化铅锌矿石铅浮选工艺研究

针对云南某难选氧化铅锌矿石性质复杂,铅氧化率高,锌回收价值低等特点,进行了铅矿物硫化-黄药法浮选、脂肪酸直接浮选工艺对比。结果表明:相较硫化-黄药法浮选铅精矿铅品位55. 62%、铅回收率75. 45%,脂肪酸直接浮选工艺整体选矿指标更佳,铅精矿铅品位50. 38%、铅回收率78. 08%;且脂肪酸直接浮选工艺具有添加药剂种类少、用量小、选矿成本低等优势,选矿药剂成本比硫化-黄药法浮选低36. 64元/t。脂肪酸直接浮选工艺更适宜于处理该难选氧化铅锌矿石。     

白音诺尔铅锌矿伴生银综合回收技术研究与生产实践

针对白音诺尔铅锌矿伴生银在浮选时回收率较低的问题,研究了经济有效地提高伴生银回收率的工艺和技术,在保证铅锌回收率略有提高的情况下,最大限度地提高精铅矿中银含量,从而提高资源利用率和矿山经济效益。通过实验研究和工业试验验证,制定了白音诺尔铅锌矿伴生银综合回收的新药剂制度。与原药剂制度对比,铅锌的选矿回收率分别提高了0.43%和1.37%,有价银的回收率提高了7.35%,取得了显著的经济效益。     

原生金矿石选矿技术现状及发展

近年来,黄金需求不断增大,从而促进了金矿石选矿技术的不断提高,尤其是在原生金矿石的回收方面,常规矿石和难处理矿石的选矿技术均实现了较大突破。主要表现在常规工艺的不断改进,新的工艺、设备和药剂的不断开发,以及与化学、生物学、物理学的有机结合。论述了当前原生金矿石的选矿技术现状,着重叙述了针对难处理原生金矿石的新型工艺、药剂和先进的设备应用现状及浮选理论的主要研究进展情况。     

浮选粒度及浓度对铅锌硫化矿浮选分离的影响

浮选粒度及浓度是影响铅锌选矿指标的重要工艺参数。为进一步提高锡铁山矿铅锌浮选指标,节省选矿生产成本,重点考察了浮选粒度及浓度对铅锌选矿效果的影响。浮选试验结果表明,适合该矿石浮选的最佳浮选粒度为-0.074 mm占55%;选铅浮选浓度为48%,选铅尾矿无需浓缩后选锌浮选浓度为47%。在该条件下,利用现场生产流程及药剂制度处理该矿石,闭路试验可以获得含铅74.82%、含锌2.97%、铅回收率93.41%的铅精矿,含锌46.08%、锌回收率94.03%的锌精矿,含硫40.75%、硫回收率71.06%的硫精矿;相比现场浮选粒度及浓度条件下闭路试验指标,铅、锌、硫回收率分别提高了2.36,2.54,2.98个百分点。适宜的浮选粒度有益于目的矿物颗粒与气泡碰撞、附着,并保证了气泡对矿物具备足够的负载能力,促进了目的金属矿物的高效上浮;高浓度浮选工艺增加了矿浆中药剂浓度,强化了药剂与矿物的作用能力,并有效强化了气泡对有用疏水颗粒的拱抬效应,提高了铅锌硫矿物的分选指标。     

滇东北某矿铅硫混合浮选电位调控试验研究

对滇东北某铅锌矿锌铅硫混浮阶段进行了电位调控浮选试验研究,结果表明充气,添加氧化剂和外加电场等方式均能大幅提高黄铁矿的回收率。从经济和技术角度考虑,通过充气的方式来改善黄铁矿浮选的电化学环境是该矿下一步的工作方向。     

锡铁山铅锌矿浮选新药剂工业试验

在锡铁山铅锌矿深部矿石浮选新药剂试验研究的基础上,为使科技成果迅速转化为生产力,尽快应用于工业生产,进一步确定实际回收率提高效果,将新药剂在锡铁山铅锌矿选矿厂4个系列两种工艺流程中进行工业试验应用,效果良好,取得了理想的生产指标,每年可新增经济效益5200万元以上。     

高效射流浮选机在某铅锌矿浮选生产中的应用

高效射流浮选机用于辽宁某铅锌矿矿石浮选生产中,简化了流程,节省了占地面积,降低了能耗。在原矿铅品位2.5%、锌1.6%的情况下,取得的选别指标:铅精矿品位60%、回收率87.6%;锌精矿品位54%,回收率85.4%。     

熔炼次数对M17返回料合金成分、组织和性能的影响

实验结果表明,M17铸造高温合金(%:0.16C、8.79Cr、5.79A1、4.93Ti、3.29Mo、15.20Co、0.78V、0.015B、0.073Zr、0.002S、0.001P、0.001 1O、0.001 0N)经25 kg真空感应炉返回重熔后,Si含量随重熔次数的增加而略有增加,合金中主要元素和其它杂质元素S、P、H的含量变化不大,而氧、氮略有增加;合金中初生碳化物由新合金中的草书体逐渐向返回合金块状转变,初生碳化物的遗传性堵塞合金凝固时的补缩通道,使返回料合金的疏松倾向增大,高温塑性下降较大。     

China's Major Non-ferrous Metals Imports & Exports

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Zinc Production by Province in 2014

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80% of Chinese Firms Purchasing Overseas Mines Ended up in the Red

<正>Minmetals Resources acquired the world’s largest copper mine under construction for USD5.85 billion.One after another,listed companies Jien Nickle,China Molybdenum and Chihong Zinc and Germanium raised money to get involved in overseas mining projects…SOEs and private enterprises are engaged in a frenzy of overseas mine purchasing.A reporter with Economic     

Copper Processing Profit Dropped Sharply,Copper Consumption Will Face Impact in the Second Half of the Year

正Judging from China’s copper consumption field,the biggest consumption unit is electric power,which accounts for 47%of total consumption;it is followed by light industry sector,including household electrical appliance,machinery,durable goods and hardware etc,which accounts for 22%of total consumption;followed by transportation field,     

Central Geological Prospecting Fund Newly Added 16.47 Million Tonnes of Bauxite in 2013

正In 2013,the Central Geological Prospecting Fund(CGPF)Project newly discovered 15 ore fields,including 3 large above ore fields,and 5medium sized ore fields.The reporter learned from the recently published"Annual Report of Central Geological Prospecting Fund Project(2013)"that,from 2006 to 2013 the CGPF     

Manufacturers of Copper Tube for Central Air Conditioner Use Face Mounting Pressure in the Final Quarter of the Year

正This year,the investment growth rate of real estate industry continued to slow down,sold area of commercial housing also dropped significantly,which brought huge pressure to the domestic air conditioning manufactures.In the first half of the year,by relying on high growth in national financial expenditure,along with investment in public infrastructure     

Xinjiang Ranks No.1 in Production of Primary Aluminum in China

正Kang Yi,Honorary Chairman of China Nonferrous Metals Industry Association,said recently at the Forum on Development of the Non-ferrous Metals Industry in Central and Western China held in Zhengzhou that,as more and more electrolytic aluminum factories in Xinjiang came into operation,the electrolytic aluminum output of Xinjiang had reached2,275,000 tons in the first 7 months this year,     

Shenhuo Coal Industry and Electricity Power Completed800,000 t/a Aluminum Project in Xinjiang

正"Xinjiang project has been completed according to schedule,but total completion and total start of production are two different concepts,after completion it still needs a gradual process of reaching production target."On the morning of November 3,Shenhuo Coal Industry and Electricity Power told investors the above statement on the investor interaction platform.     

Guangdong Metal Transaction Center has Become the Second Largest Precious Metal Transaction Platform Nationwide

正The reporter learned from Guangdong Province Precious Metal Transaction Center that in 2013the Center maintained healthy development momentum,and had become the second largest precious metal transaction platform in China in terms of market size;currently Guangdong is quickening steps of financial innovation for the Center,aiming to build a transaction center with international core competitiveness.