弱放热反应TiSi2燃烧合成的研究

采用燃烧合成法合成了绝热温度为１８００Ｋ的ＴｉＳｉ２。分析了毛坯直径和初始孔隙率、Ｔｉ颗粒及预热温度对燃烧合成的影响，证实满足Φ＝９２ｍｍ，ρ＝５２％的－３００目钛粉形成的毛坯在常温才能发生自蔓延反应。利用燃烧波前沿熄淬法（ＣＦＱ）研究了ＴｉＳｉ２形成机制。当Ｔ≤１３３０℃时ＴｉＳｉ２通过扩散反应机制进行；当Ｔ〉１３３０℃时，ＴｉＳｉ２反应机制则是溶解－沉淀析出。分别利用ＸＲＤ和ＳＥＭ分别了产物及     

高岭石与氢氧化纳溶液反应动力学研究

本文研究了高岭石与氢氧化钠溶液反应的动力学，高岭石、铝土矿中高岭石与碱液反应属于扩散－化学反应控制，化学反应的级数为１，其反应表观活化能：纯高岭石ＥＤ＝４４．５７ｋＪ／ｍｏｌＥｒ＝４９．７９ｋＪ／ｍｏｌ；铝土矿中高岭石ＥＤ＝４６．９８ｋＪ／ｍｏｌ，Ｅｒ＝５４．４９ｋＪ／ｍｏｌ，碱液中含硅或含铝会抑制反应的进行，但不改变碱液与高岭石反应的机理。     

MIM油基粘结剂的化学溶剂萃取脱脂动力学研究

采用几种不同粘结剂组成比例的ＭＩＭ油基粘结剂高密度合金注射料，研究了其溶剂萃取脱脂过程及动力学控制因素。结果表明：ＭＩＭ油基粘结剂的化学溶剂萃取脱脂过程的控制步骤为溶剂与粘结剂在溶剂－粘结剂溶体中的互扩散，可用ｄＷ＝１－ｅｘｐ（－ｔτ）表示，其互扩散系数处于５～８×１０－７ｃｍ２／ｓ范围。     

氧化气氛下铜的氯化机理研究

在实验的基础上,对氧化气氛下铜的氯化机理进行了研究,实验结果证明了铜在氧化气氛下的氯化历程,其机理为以Ｏ２为催化剂的循环催化反应,并获得了以下动力学参数：表观反应级数为ｎ＝１,表观活化能Ｅ＝３４６０Ｊ／ｍｏｌ,表观频率因子ｋ０＝１．９＊１０＾－３ｋ／ｍ＾２．ｓ,并获得了铜在氧化气氛下氯化的反应速率方程式：ｖ＝１．９＊１０＾－３ｅｘｐ（－３４６０／（ＲＴ）（Ｖｃｌ２％）。     

吸附溶出伏安法测定痕量钒

在０．０１ｍｏｌ／ＬＨａｃ－ＮａＡｃ和１．２×ｌ０－５ｍｏｌ／Ｌ乙醛酸缩氨基硫脲（ＧＡＴＳＣ）体系中，Ｖ（Ⅴ）产生一灵敏的还原波，峰电位是－０．８９ｖ（υｓ．ＳＣＥ），峰高与Ｖ（Ⅴ）的浓度在２．０×１０－８～１．６×１０－６ｍｏｌ／Ｌ范围内呈直线关系，检测限是６０×１０－９ｍｏｌ／Ｌ。     

超低碳钢钛的硫化物和碳硫化物的溶度积

定量研究了钛稳定化无间隙原子钢的平衡析出行为。通过溶解试验测定了ＴｉＳ和Ｔｉ４ Ｃ２Ｓ２的溶度积。结果如下：Ｌｏｇ〖Ｔｉ〗〖ｓ〗＝－１３９７５／Ｔ＋５．４３；ｌｏｇ〖Ｔｉ〗〖Ｃ〗＾０．５〖Ｓ〗＾０．５＝－１７０４５／Ｔ＋７．９用溶度积公式计算的结果与不包括溶解试验在内的其它试验结果相吻全。将本研究所得到的沉吟度积试验结果与不同试验所得到的ＴｉＳ、Ｔｉ４Ｃ２Ｓ２溶度积结果相比较说明，本研究所得到的溶     

氟碳铈精矿加碳酸钠焙烧反应动力学研究

利用ＴＧ－ＤＴＡ图，分别用Ｆｒｅｅｍａｎ－Ｃａｒｒｏｌｌ法和差减微分法计算了氟碳铈精矿添加１０％Ｎａ２ＣＯ３焙烧反应的动力学。ＴＧ曲线计算得到反应的表观活化能Ｅ＝１８３．６ｋＪ／ｍｏｌ，反应级数ｎ＝０．８２ＬＤＴＡ曲线计算得到反应的表观活化能Ｅ＝１７６．６ｋＪ／ｍｏｌ，反应级数ｎ＝０．６１，二者差别不大。     

Study of Bi_2O_3-based Rare Earth Solid Electrolyte Used in Fuel Cell

ＳｔｕｄｙｏｆＢｉ_２Ｏ_３－ｂａｓｅｄＲａｒｅＥａｒｔｈＳｏｌｉｄＥｌｅｃｔｒｏｌｙｔｅＵｓｅｄｉｎＦｕｅｌＣｅｌｌ￥ＨｅＬａｎｙｉｎｇ；ＣｈｅｎＧｕａｎｇｙｕ；ＬｉｕＪｉａｎｇ；ＳｕＷｅｎｈｕｉ（ＤｅｐａｒｔｍｅｎｔｏｆＰｈｙｓｉｃｓ，ＪｉｌｉｎＵ...     

高岭石与氢氧化钠溶液反应动力学研究

本文研究了高岭石与氢氧化钠溶液反应的动力学，高岭石，铝土矿中高岭石与碱液反应属于扩散一化学反应控制，化学反应的级数为１，其反应表观活化能，纯高岭石ＥＤ＝４４．５７ｋｊ／ｍｏｌＥｒ＝４９．７９Ｋｊ／ｍｏｌ，铝土矿中高岭土ＥＤ＝４６．９８ｋＪ／ｍｏｌ，Ｅｒ＝５４．４９ｋＪ／ｍｏｌ，碱液中含硅或含铝会抑制反应的进行，但不改变碱液与高岭石反应的机理。     

铁合金文摘 THJ1803－1828

铁合金文摘ＴＨＪ１８０３－１８２８ＴＨＪ１８０３ＴＦ６４２．１直流对氧化锰从熔融的ＭｎＯ－ＳｉＯ２－ＣａＯＡｌ２Ｏ３渣还原的电化学作用［Ｅｌｅｃｔｒｏｃｈｅｍｉｃａｌｅｆｆｅｃｔｓｏｆｄｉｒｅｃｔｃｕｒｒｅｎｔｏｎｔｈｅｒｅｄｕｃｔｉｏｎｏｆｍａｎｇ...     

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.