利用攀枝花钛精矿的两条流程

根据攀枝花钛精矿的特点和该地区的能源条件，论述了利用攀枝花钛精矿的两条流程：即钛精矿或电炉法酸溶性钛渣--硫酸法制造钛白流程；钛精矿盐酸浸出法人造金红石-氯化法制造钛白或海绵钛流程。并对这两条流程产业化的有利条件、存在问题和应采取的措施进行了探讨。     

富钛料的制备方法和发展建议

介绍了富钛料、钛渣、高钛渣、人造金红石、金红石的基本概念和富钛料的主要用途。简述了工业上制备富钛料常用的几种方法——电炉熔炼法生产钛渣、盐酸浸出法、硫酸浸出法、还原锈蚀法生产人造金红石的原理、国内外生产状况。根据制备富钛料的不同方法，分析总结了国内在富钛料生产技术、装备水平、生产规模、产品质量等方面与国外的差距，并据此提出了加快我国富钛料发展的建议。     

如何发展我国的富钛料生产

生产海绵钛和钛白的主要原料是钛精矿和天然金红石。钛精矿再加工成被称之为富钛料的高钛渣或人造金红石。海绵钛和氯化法钛白主要以高钛渣、人造金红石和天然金红石为原料;硫酸法钛白主要以酸溶性钛渣或钛精矿为原料。80年代以前,有60%以上的钛精矿用于硫酸法钛白生产,40%左右的钛精矿加工成高钛渣和人造金红石用于海绵钛和钛白的生产。由于环保和运输等原因,目前世界各国直接用钛精矿生产钛白的厂家越来越少,绝大部分的钛精矿都加工成高钛渣和人造金红石供给钛白和海绵钛生产。换言之,当前海绵钛和钛白生产所用原料的发展趋势是用钛…     

攀枝花钛精矿中CaO赋存状态及对人造金红石品质的影响

采用XRD、扫描电镜对攀枝花钛精矿、攀枝花钛精矿制备人造金红石进行深度剖析,得出CaO在攀枝花钛精矿中主要与SiO2、MgO、FeO、TiO2等物质固溶于钛铁矿伴生相硅酸盐中。在生产人造金红石工艺中通过高温强氧化还原改性,盐酸浸出等方法均不能有效打破其结构,导致CaO在人造金红石产品中富集,影响产品质量。提出通过深度解粒,调整钛精矿选别工艺参数,可有效降低钛精矿中CaO含量,生产出高品质的人造金红石。也可通过高梯度磁选处理富钛料去除CaO杂质元素,生产满足国际大型沸腾氯化炉需要的人造金红石产品。     

人造金红石母液预处理改性钛精矿研究

论述了人造金红石母液预处理改性钛精矿的基本原理和技术思路,并在实验室进行了人造金红石母液和盐酸两段浸出改性钛精矿试验,考察了液固比、浸出温度、浸出时间、盐酸浓度对制备人造金红石品位和钛回收率的影响,可得到钛品位92%以上的人造金红石产品。采用人造金红石母液预处理改性钛精矿,可节约盐酸用量及废酸处理成本约600元/t,经济效益显著。     

预氧化处理对云南钛精矿浸出过程粉化的影响

人造金红石作为天然金红石的优质代用品,大量用于生产氯化法钛白和海绵钛。针对云南钛精矿相关物化特性,采用预氧化钛精矿、盐酸浸取的方法制备人造金红石,研究预氧化处理对浸出率及粉化的影响。结果表明:预氧化处理改变了钛精矿结构,解决了盐酸浸出过程的粉化问题。在盐酸浓度为20%、酸矿比为5∶1时,加热到沸腾浸出在750℃时预氧化30 min后的钛精矿,得到的人造金红石粒度小于74μm的矿粒仅占3.29%,品位为77.1%。     

我国钛资源分布和生产现状

钛及其合金具有比强度高、耐蚀性能优、生物相容性好等优点，是一种战略金属，主要用于航空、航天、航海等先进装备。钛白粉是一种重要的化工原料。人造金红石高钛渣、天然金红石等富钛料是生产钛白粉电焊条和海绵钛的原料。本文概述了我国钛矿物的地理分布和由钛原矿到海绵钛的生产工艺，并与国外技术进行了对比说明。介绍了我国钛精矿、富钛料的产能、生产现状和国内需求情况。     

钛渣和钛铁矿制备富钛料的研究现状

介绍了国内外钛渣和钛铁矿资源综合利用的现状,并详细叙述了国内外不同的钛渣和铁钛矿制备富钛料的生产工艺。通过对比发现,开发一种在较低能源消耗和较小环境污染条件下从酸溶性钛渣中进一步除杂获得优质人造金红石的新技术,对于我国钛资源的大规模高效利用具有重要意义。认为寻找能替代天然金红石的物料固然重要,而其中开发一种低能耗的金红石生产方法显得尤为重要。     

钛资源综合利用技术政策探讨

钛产品从原料经过深加工后分为：钛精矿、高钛渣、人造金红石、钛白粉、海绵钛、钛材(钛合金)等。其中高钛渣分为酸溶性钛渣和氯化钛渣,钛白粉分为硫酸法钛白和氯化法钛白。1 国内钛资源综合利用情况及主要问题对国内钛矿的生产,特别是对攀枝花钛精矿的综合回收问题,国家从“七五”就开始组织各院所攻关一直到“八五”,目前已取得令人满意的成果,生产顺利。但有不少小选钛厂仍在采用落后的生产技术,且生产规模也较小,这既浪费资源,又污染环境,必须加以治理和整顿。国内钛渣的生产技术攻关,从“七五”一直到“九五”都在进行,但目…     

真空碳热预还原-盐酸浸出钛精矿制备人造金红石的研究

本文以钛精矿为原料进行真空碳热预还原-盐酸浸出实验，并分析真空碳热还原温度对金属失重率、金属化率、炉内压强以及Fe、Si和Mg挥发情况的影响，以及研究盐酸浸出中不同固液比、盐酸浓度、酸浸时间对人造金红石品位的影响，从而得到真空碳热预还原-盐酸浸出钛精矿制备人造金红石方法的最佳反应条件。试验结果表明，随着还原温度升高，金属化率和失重率逐渐增加，Fe、Si和Mg的挥发率逐渐增大，还原温度选择1 500℃为宜；盐酸浸出最佳条件为盐酸浓度15%、固液比1∶5、酸浸时间20 min、搅拌速度120 r/min。真空碳热预还原可使钛精矿的杂质含量降低，使杂质铁还原形成细小的球状颗粒，使其比表面积大大增加，从而降低酸解的反应温度、压强和反应时间，在常压条件下采用盐酸浸出方法即可以快速还原得到高品位的人造金红石。     

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.