导热性能高的铝硅合金的制造方法

本专利提供一种铝硅铸造合金，它既有一般铝硅合金较高的力学性能，又具有较好的铸造性能。铝合金中含有6．0％～8．0％硅，除了铝和硅以外，其它单个金属元素含量均在0．6％以下。硅在铝中的固溶量为0．5％～1．1％，同时通过加热到400-510℃且保温1小时，可以使金属显微组织内的晶体物析出量达到5％～8％。     

Al、Ti元素对高锰铝青铜组织和性能的影响

为了解合金元素Al、Ti对高锰铝青铜组织和性能的影响，采用石墨坩埚炉熔炼，制取了Al、Ti含量不同的高锰铝青铜试样，通过对试样进行金相组织检验和硬度测试分析，发现Al、Ti元素含量对高锰铝青铜组织和硬度的影响较大，确定了用该高锰铝青铜材料制造冶金备件产品时，Al元素的最佳含量为7．5％～8．2％、Ti元素的最佳含量为0.20％～0．25％．     

铸造铝硅合金的直接熔炼

通过对铝硅合金直接熔炼的研究，说明了铝硅合金直接熔炼的优点及操作的可行性，并指明了操作中应注意的问题。     

低含钒刚玉渣直接熔炼制备硅钒合金研究

刚玉渣是采用铝热法冶炼50或80钒铁过程中产生的固体废渣,为了提高含钒刚玉渣的利用价值,试验以刚玉渣、硅铁、石灰石、碳化钙和碳酸钠为主要原料,采用电炉熔炼制备硅钒合金.选择石灰石作为造渣剂,研究了石灰石添加量对渣的物相和钒收率的影响,结果表明:终渣中CaO含量为22％时,钒的回收率可以达到96.5％;选择硅铁作为还原剂...     

用高镁铬矿熔炼低碳铬铁

使用高镁铬矿熔炼低碳铬铁时,生产技术经济指标大为下降:电能和原材料的单位消耗量增高,随渣带走的铬损失量增大,炉渣中氧化铬的含量高达8～12%,铬的回收率不大于58～62%,同时渣比也增大。为了减少炉渣中氧化铬的含量,在金属和炉渣放出之前,将含硅量较高的硅铬合金     

硅石焦做还原剂冶炼硅锰合金

在９０００ｋＶＡ电炉中进行了分别用硅石焦和冶金焦做还原剂冶炼硅锰合金的试验，用硅石焦做还原剂，锰回收率由用冶金焦时的７３．５％提高到７６．５％，产品中锰含量由６４．５％提高到６７．２％，电耗平均降低１３５ｋＷｈ。硅石焦是冶炼硅锰合金的优良还原剂。     

含钙铁合金和中间合金的生产

车里雅宾斯克电冶金联合企业对国内所有的含钙铁合金及其中间合金的还原熔炼过程都进行了研究。这些合金的成分波动很大(Ca含量由0.5至35％)。中间合金中除钙以外,还含有硅和铝,它们以熔融状态溶解     

硅锰母合金在对烧结钢性能和组织的影响

通过添加硅锰母合金，将硅，锰这两种对氧亲和力较高的元素加入到烧结钢中，以改善烧结钢的力学性能，结果表明，当硅含量为１．１％～１．７％，锰含量为２．７％，碳含量为０．３５％时，烧结钢的强度可以超过８００ＭＰａ，但添加硅锰母合金对冲击韧性有不利影响，两种不同成分的母合金相比较，但添加硅锰母合金对冲击韧性有不利影响，两种不同成分的母含金相比较，硅锰含量主的母合金的烧结钢的力学性能影响较显著。     

含钪铝合金的实心或中空挤型材

本发明是关于一种含有钪铝合金的实心或中空挤型材，主要包括有：铝含量约为93％，钪含量为0．01％～0．19％，锌含量约为6％，其余为无可避免的不纯物及依不同组件的需求而增加其它不同的合金或元素，该无可避免的不纯物、该添加的合金或元素其含量均为0．81％～0．99％。该其它合金或元素包括有镁、锰、硅、铜、镍合金。其主要是利用上述的最佳成分比，其中铝含量约为93％。     

大洋富钴结壳中有价金属的火法富集研究

在实验确定的最佳火法富集条件下,可将在泵富钴结壳中９９．３６％,９８．４４％,９８．０３％,９８．７６％的钴、镍、铜、铁富集于仅占原结壳重１６．５６％的熔炼合金中,金属铂在合金中富集了约７倍,含量达２．１ｇ／ｔ,绝大部分锰（９２．２７％）进入熔炼渣中,该渣适合冶炼硅锰合金。该研究为进一步分离提取富钴结壳中有价元素奠定了良好的基础。     

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.