降低银山矿矿石贫化的实践

通过对设计、采矿、出矿等过程中影响贫化的原因的分析，提出了降低浅孔留矿采矿法矿石贫化的一些措施。     

诺兰达炉渣火法贫化机理的探讨

本文在试验的基础上对诺兰达炉渣火法贫化的机理进行研究。沈冶诺兰达炉渣含铜３％以上，使用焦粉还原剂和黄铁矿硫化剂进行贫化处理，并适当加ＳｉＯ２改善渣型，在静态试验中，渣含铜可降到０．６３５；在Ｎ２搅拌的动态试验中，可使渣含铜降到０．４１％。     

削壁式充填采矿法在大柳行金矿的试验研究及应用

削壁式充填采矿法在开采急倾斜极薄矿脉时可显著降低采矿贫化损失,实现矿岩分采。针对大柳行金矿采用浅孔留矿采矿法开采存在的问题,结合矿区工程实际情况,开展了削壁式充填采矿法的试验研究及应用。根据源口新井矿区生产实际得出矿区矿块的生产能力达45 t/d,矿石贫化率由原15%降低为10%,采矿损失率由原16%降低至11%,矿区经济效益显著。     

井田进路全面采矿法试验研究与工程实践

以紫木凼金矿为工程背景，介绍了井田进路全面采矿法试验过程，试验取得了矿块生产能力79t／d、采矿损失率7．8％、矿石贫化率11．7％较好的技术经济指标，不仅达到了设计指标，还为工业生产推广应用打下了基础。     

高村矿区二次贫化原因分析及降低方法实践

广东高要河台金矿高村矿区1989年投产至今已有13年历史，浅孔留矿采矿法开采，由于采空区矿坏导致相互连通，很多采场在覆岩下出矿，矿山估计矿石二次贫化率37％，个别采场实际大于此数，近年采空区采用隔离技术后，二次贫化大为降低，并取得明显经济效益。     

对影响覆岩下底部放矿损失贫化因素的分析

崩落采矿法是金属矿山地下开采应用较多的一种高效采矿方法,覆岩下底部放矿损失贫化大是该采矿法的一个特点.文中分析总结了覆岩下底部放矿损失贫化产生的因素,即松散矿石的物理力学性质、放矿口的结构及尺寸、矿体的厚度及倾角、放矿管理等,可为应用崩落采矿法矿山损失贫化管理提供借鉴.     

浅谈我国留矿法应用情况与改进方向

一、留矿采矿法使用情况留矿采矿法在我国金属矿山应用很早且广泛,应用时间也较长。无论是矿山数还是从矿石采出量来看,留矿法均占较大比例。但是从七十年代开始,使用留矿法生产的矿石量是逐渐减少的。1961年留矿法在我国有色金属地下矿山采出的矿石量中所占比例为49％,1981年降到39％,1983年又降到24％,而1985年进一步降到     

生物法贫化铜熔炼炉渣

研究了生物法贫化炉渣中微生物的培养和驯化条件,并用驯化后的微生物浸出铜熔炼炉渣,渣含铜由1．285％降到0．29％,铜的浸出率为77．6％。     

缓倾斜露天矿顺倾向采矿法的改进

张钢油田石灰石矿根据矿山实际情况对缓倾斜露天矿顺倾向采矿法进行改进，采用由上而下顺倾向与水平分段相结合，横向爆破，沿走向运输，多台阶伺步推进的采矿方法，使矿石回采率达到95％以上，贫化率低于1％，年创经济效益近10万元。     

白银炼铜法炉渣贫化技术研究

在试验研究过的还原—硫化法、直流电法、氮气搅拌法和自然澄清方法中，以还原—硫化法贫化炉渣效果最佳：渣含铜降到０．２７％，铜回收率达７５．８％。     

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.     

Seven Rare Earth Projects Involving Close to 3 Billion Yuan Investment Landed In the HighTech Zone

正On May 22,Baotou Rare Earth Industry Cooperation Consultation MeetingProject Agreement-signing Ceremony was held in Ningbo,nearly 40 enterprises from Ningbo,Guangdong,Hunan,and Shanxi participated in project consultation.After multi-lateral communication,agreements were signed for a total of 7 rare earth projects successfully.