钙基脱硫剂钢水罐内脱硫的实践

通过对钙基脱硫剂在钢水罐内进行渣洗脱硫的试验研究，基本探索出了钙基脱硫剂4在转炉出钢过程中的脱硫工艺技术思路。对于冶炼终点[S]≥0．015％的钢水，钙基脱硫剂脱硫率平均高速43．59％（范围29．41～67．86％）：而对于冶炼终点[S]含量〈0．015％的钢水，脱硫率虽在20％以下，但能抑制钢水回硫。     

镁基喷吹深脱硫回硫控制分析

对铁水镁基喷吹深脱硫反应从理论上进行了深刻的论述,并对铁水脱硫回硫机理进行了理论说明,并在生产中对部分工艺参数进行了优化改进,提出了解决极低硫终点命中、扒净脱硫渣等回硫控制方法,进一步提高了镁基铁水脱硫效果,使转炉冶炼极低硫钢的抗酸管线钢回硫量为10×10-6,实现了极低硫钢的批量生产。     

化学加热法用硅系铁合金加热钢液的热模拟研究

研究了用硅系铁合金作发热剂加热钢液的加热效果以及对钢质量和炉衬耐火材料侵蚀的影响，向钢包中加入CaO调整顶渣性质，碱度R=2.60～3.10时可有效地控制钢液回硫、回磷对钢质量的影响，钢中各种夹杂物含量及其总量随着R的升高而降低，且SiCaBa合金发热剂对夹杂物总量降低的效果比SiFe效果好，同时可减轻酸性氧化物顶渣对工业用铝镁尖晶石炉耐火材料的侵蚀。     

MgO基和Al2O3基耐火材料对钢中磷的影响

探讨了MgO-CaO、MgO-Al2O3和Al2O3-MgO耐火材料对82B钢中磷的影响。利用化学分析、图像分析、扫描电镜和能谱分析等检测手段测定了82B钢水在中频炉中经1450℃熔炼80min后耐火材料内衬成分变化及钢中磷的变化，还探讨了MgO-Ca0材料的脱磷机理。结果表明，MgO-CaO材料中的游离CaO能吸附钢中磷，达到脱磷效果，其中CaO含量30％的材料脱磷效果最佳达61％。     

不同碳含量的MgO-C耐火材料与超低碳钢液的相互作用

研究了3种C含量的(3%、5%、10%,质量分数)MgO-C耐火材料与超低碳钢的相互作用。利用ICPAES、氧氮分析仪、碳硫分析仪检测了与实验MgO-C耐火材料接触的钢液的成分,用XRD分析了耐火材料反应前后的物相变化,并利用SEM观察了耐火材料/钢界面。结果表明,随着镁碳耐火材料中C含量的增加,耐火材料/钢界面附近的渗透层厚度增加;反应后钢液中的C、N、Al含量以及Mg含量随着耐火材料中C含量的增加而增加,钢中O含量随之降低;反应前后的镁碳耐火材料都有镁铝尖晶石的存在,高C含量的耐火材料反应后镁铝尖晶石含量增加,因此低碳镁碳耐火材料更有利于超低碳钢的生产。     

钢水化学加热法硅发热剂的应用

在16kW立式二硅化钼棒炉内对钢水化学加热法进行了热模拟，共研究了以硅钙钡作为发热剂时，钢水顶渣碱度对钢水质量和钢包耐火材料侵蚀的影响，结果表明，钢中元素含量基本不变时，夹杂物没有明显增加，提高顶渣碱度可以有效防止回磷、回硫，并具有脱磷和脱硫的效果，且顶渣对铜包耐火材料的侵蚀并不严重。     

红外吸收法测定高温合金中向量硫

本文对红外吸收法测定钢中向量硫的最佳分析条件进行了研究，测定铁基，镍基高温合金等试样，得到了满意的结果。     

光学碱度用于炉渣和熔剂控制

光学碱度为优化炉渣及熔剂成分提供了理论基础。它可用于计算使钢中磷，硫和氧残余含量达到最低所需的炉渣成分，含镁耐火材料的溶蚀量以及合金元素氧化损失。     

红外吸收法测定高温合金中微量硫

本文对红外吸收法测定钢中微量硫的最佳分析条件进行了研究。测定了铁基、镍基高温合金等试样，得到了满意的结果。     

氮基气氛中材料的脱硫与氮吸收

介绍了烧结铁基零件的硫损量和硬度、尺寸变化等与氮基烧结气氛成分、压坯含硫量等因素的关系,并比较了以硫或者MnS作为添加剂对增脱硫量及烧结件性能的影响,还介绍了烧结气氛中氮含量对烧结Fe-C材料的物理性能、烧结铁材料的磁性能和烧结不锈钢材料的耐腐蚀性能的影响,以及不锈钢烧结材和冶炼钢锻材在氮吸收上的重要差别。     

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.