高速钢W6Mo5Cr4V2的脱磷试验

在３０ｋｇ感应炉上用ＣａＯ－Ｎａ２ＣＯ３－ＣａＦ２－ＦｅｘＯ（ＭｏＯ３）渣、ＭｏＣｌ６粉剂和Ａｌ－Ｃａ合金作脱磷剂对高速钢Ｗ６Ｍｏ５Ｃｒ４Ｖ２进行脱磷试验。结果表明，ＣａＯ－Ｎａ２ＣＯ３－ＣａＦ２－ＦｅｘＯ渣的脱磷效果最好，一般脱磷率可达２６％￣５６％。     

关于转炉溅渣护炉的几个工艺问题

分析总结了国内转炉溅渣护炉的生产经验，提出：①溅渣护炉的合理渣量为：Ｑｓ＝０．３０１Ｗ＾ｎ（ｎ＝０．５８３￣０．６３０）；②转炉参数与合理溅渣参数的关系为：Ｈ·ｄ／Ｄ＝１６．２４＋０．６０（Ｑ·ｈ／ｄ）＾０．３３·ｔ；③适宜溅渣的合理终渣成分为：Ｒ＝２．８￣３．５，（ＴＦｅ）＝１０％￣１５％，ＭｇＯ〉８％；④转炉出钢温度对炉龄的影响为：ｎ＝２０８５２９－１２０．９ｔ。     

低碳钨合金的制取

低碳钨合金的制取低碳钨合金的制取工艺是：将硬质合金生产过程中含ＷＣ７６～８４％、ＴｉＣ６～９％和Ｃｏ４～１０％的合金粉末废料同仲钨酸铰生产过程中含ＷＯ＿３４５～５４％、ＣａＯ１２～１８％和ＳｉＯ＿２４～７％的废料按１：（１～２）的比率混合均匀，将此混...     

LF（钢包炉）固体合成渣脱硫工业性试验研究

以３０ｔＥＢＴ超高功率电炉为初炼炉和４０ｔＬＦ（钢包炉）作为精炼炉，使用ＣａＯ－ＣａＦ２系固体合成渣对Ｑ２３５钢进行钢包炉内脱硫工业试验，在本试验条件下，当ＥＢＴ电炉初炼钢液（Ｓ）初＝０．０３５％～０．０８１％时，最佳精炼渣碱度Ｒｂ＝（％ＣａＯ）／（％ＳｉＯ２）为２．０～２．６或Ｒｆ＝（％ＣａＯ）＋（％ＭｇＯ）／（％ＳｉＯ２）＋（％Ａｌ２Ｏ３）为１．５～２．０，渣指数（ＣａＯ）／（ＳｉＯ２）：（Ａ     

Na2WO4溶液中砷的萃取色谱分离研究

报道了ＣＬＮ１９２３萃淋树脂的制备方法及其在弱碱性条件下对钨和砷的吸萃性能，并研究了从高含量钨溶液中分离微量砷的条件。静态法及动态法试验结果表明，ＣＬＮ１９２３萃淋树脂能够有效地分离粗Ｎａ２ＷＯ４溶液中的砷，砷含量可由Ａｓ／ＷＯ３＝０．０４％～００８％降至０００３％～０００６％。树脂上吸萃的砷及少量钨易用１％Ｎａ２ＣＯ３溶液反萃而使树脂再生     

转炉溅渣护炉成渣途径的探讨

在分析了渣中ＭｇＯ含量对转炉ＭｇＯ－Ｃ砖的侵蚀和炉渣熔点影响的基础上,探讨了溅渣护炉的成渣方式：在造渣过程分批向渣中加入含ＭｇＯ的调质剂如白云石,并通过实践操作讲座了渣中ＭｇＯ的调质剂如白云石,并通过实践操作讲座了潭中ＭｇＯ含量对造渣过程的影响以及相应的溅渣护炉的成渣途径。     

粗Na2WO4溶液中杂质磷的萃取色谱分离研究

报道了ＣＬ－Ｎ１９２３萃淋树脂对钨和磷的吸萃性能,研究了树脂对高量钨溶液中微量磷的色谱分离条件。通过动、静态法试验结果表明,ＣＬ－Ｎ１９２３萃淋树脂在ＰＨ＝７．８０－８．３２的弱碱性ＮａＨＣＯ３溶液中对粗Ｎａ２ＷＯ４溶液中微量杂质磷具有中的吸萃能力,动态吸萃率达９０％以上,βＰ／ＷＯ３达１００左右,高纯钨的直收率约８０％,分离后钨溶液中磷的含量由０．５０￣０．５０ｇ／Ｌ降至０．０１５ｇ／Ｌ以下,磷     

选择性沉淀法从钨酸盐溶液中除钼,砷,锡等杂质的工业试验

将设计 并合成 的除钼剂 Ｍ１１５ 用于 从工业钨 酸铵溶液 中除钼 等杂质， 取得了良 好的效果 。对含 Ｍｏ ０ ．５６ ～１ ．７５ ｇ／ Ｌ 的 工业（ Ｎ Ｈ４） ２ Ｗ Ｏ４ 解 吸高峰液 ，除钼率 可达９７ ％ ～９９ ％ ，同 时，可除 去 Ａｓ 、 Ｓｎ 等 杂质。将 经 Ｍ１１５ 除杂后的（ Ｎ Ｈ４） ２ Ｗ Ｏ４ 净液进行 蒸发结 晶，当结晶 率为９５５ ％ ～９８７ ％时，所得 产品 Ａ Ｐ Ｔ 全部达 到 Ｇ Ｂ １０１１６ —８ ８ Ａ Ｐ Ｔ—０ 级标 准。同时 ，为结晶 母液中 Ｎ Ｈ４ Ｃｌ 和 Ｗ Ｏ３的回收以 及三废排 放量的 减少找到 了一种 简单高效 的方法。     

难选高锡钨毛精矿分选生产实践

漂塘钨矿大江选厂毛精矿（ 又称粗精矿） 是我国钨矿山中组成较复杂、分选难度较大的毛精矿之一。自１９９５ 年建立精选车间以来,在生产中不断摸索和完善,终于探索出适合矿石性质的工艺流程, 钨锡分选达到较为理想的效果, 取得了钨精矿精选实收率达９６．９２ ％ , 产品质量ＷＯ３ 为６５．９９％ 、含Ｓｎ 为０ ．１５３％ 的合格国标一级Ⅱ类产品;锡精矿精选实收率达９６．５１％ ,锡精矿主品位含Ｓｎ 为７３ ．０９％ 、含ＷＯ３ 只有０ ．８％ 的优质产品。     

转炉溅渣护炉调质剂的开发研究

影响溅渣护炉效果的终渣成分的控制,主要是控制终渣中ＦｅＯ％、ＭｇＯ％和Ｒ。通过试验室小型热态模拟实验,测定了溅渣的侵蚀量,炉渣半球熔点,并分析炉渣的显微结构,探讨了溅渣层的侵蚀机理,提出了溅渣护炉的终渣成分大致分别为ＭｇＯ＝８％－１０％,ＦｅＯ＝１０％－１３％,Ｒ＝３．５左右。     

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.