铜对无磁铸铁组织和性能的影响

实验研究了铜对Ｎｉ－Ｍｎ系奥氏体无磁铸铁组织和电磁性能的影响，测定了不同加铜量时铸铁的磁化强度，当Ｎｉ、Ｍｎ量不足时，组织中出现马氏体，磁化强度较高，加入一定量的铜，马氏体消失，磁化强度降低，为用冲天炉生产无磁铸铁大型铸件提供了炉前质量控制的可靠方法。     

Microstructure and properties of pure iron/copper composite cladding layers on carbon steel

In the present study, pure iron/copper composite metal cladding was deposited onto carbon steel by tungsten inert gas welding. The study focused on interfacial morphological, microstructural, and mechanical analyses of the composite cladding layers. Iron liquid–solid-phase zones were formed at copper/steel and iron interfaces because of the melting of the steel substrate and iron. Iron concentrated in the copper cladding layer was observed to exhibit belt, globule, and dendrite morphologies. The appearance of iron-rich globules indicated the occurrence of liquid phase separation (LPS) prior to solidification, and iron-rich dendrites crystallized without the occurrence of LPS. The maximum microhardness of the iron/steel interface was lower than that of the copper/steel interface because of the diffusion of elemental carbon. All samples fractured in the cladding layers. Because of a relatively lower strength of the copper layer, a short plateau region appeared when shear movement was from copper to iron.     

铁山岩体矿床成因类型再探

“大冶式矽卡岩型”铜铁矿床成因类型，是世界上所有铜铁矿床成因类型中最名的一种，它又以铁山岩体铜铁矿床为典型代表，并冠名“大冶式矽卡岩型”。此次研究以地球化学方法为切入点，利用计算机数据统计分析手段，对已成定论的铁山岩体矿床成因类型进行再认识，作出了对铁山岩体矿床成因类型再分类。除主要有矽卡岩铜铁矿床外，还有大量的热液型矿床和少数淋积型矿床。     

超盐体系下铜铁氰络合物的去除及机理

为解决由于浸出液中铜氰络离子(CuCN2-3,CuCN3-4)和铁氰络离子(FeCN4-6)的存在造成金矿石氰化浸出过程中NaCN和活性炭的消耗量增加的问题,初步探讨了超盐体系下铜、铁氰络离子的存在形式,并对比分析了过氧化氢氧化法、氯氧化法和酸化法对上述络合离子的去除效果.结果表明,3种方法对铜氰络离子的去除率均在99%以上,而对铁氰络离子的去除率分别为73%,62%和55%;同时,对于超盐体系的氰化废水,质子化作用比氧化作用更有利于铜、铁氰络离子的分解和去除.     

微波消解火焰原子吸收光度法测定人参中的铜、铁

采用微波消解样品和火焰原子吸收光度法,测定了人参中的铜、铁含量.结果表明,铜的加标回收率为100.3%,铁的加标回收率为100.9%,结果可靠,方法简便,可用于实际样品的测定.     

小儿营养性贫血与微量元素铁,铜,锌

对180例5个月至12岁的营养性贫血患儿及60例正常小儿作血清铁、铜、锌测定。结果显示,贫血组153例(85％)有血清铁、铜、锌单项或两项降低,与对照组比较,差异非常显著(P<0.01)。临床治疗发现,某些缺铁性贫血患儿对铁剂疗效欠佳者,加以补锌或铜后,贫血迅速改善,说明营养性缺铁性贫血与微量元素铁、铜、锌关系密切。     

铜冶炼闪速炉烟尘氧化浸出与中和脱砷

介绍了废酸氧化浸出铜冶炼闪速炉烟尘和漫出液中和沉淀砷、铁过程。从化学热力学和实验2方面研究了浸出液中以砷酸铁形式中和沉淀脱砷过程，并对砷酸铁沉淀的稳定性进行了研究。研究结果表明：闪速炉烟尘中铜、砷和铁的浸出率分别可达到83％，92％和30％，浸出液中的铁和砷的量比n（Fe）／n（As）约为1．50；控制适当的pH值中和沉淀砷、铁，可使铜存留于溶液中，而砷以砷酸铁形式进入固相中，从而达到铜、砷分离的目的；不稳定的砷酸铁沉淀物进一步转型后，则可作为无毒稳定渣丢弃。     

小于胎龄儿的脐血血清铜,锌,铁,钙,镁的水平

通过对小于胎龄儿脐血血清铜、锌、铁，钙镁的检测，发现锌随胎增加而上升；镁随胎龄增加而降低；铜、铁、钙仅在重症小于胎龄儿随胎龄增加而上升。与适于胎龄儿相比较；血清钙高于适于胎龄儿，铜、镁仅在重站小于胎龄儿高于适于胎龄儿；血清锌、铁与适于胎龄儿差别无显性。     

Recovery of iron from copper tailings via low-temperature direct reduction and magnetic separation: process optimization and mineralogical study

Currently, the majority of copper tailings are not effectively developed. Worldwide, large amounts of copper tailings generated from copper production are continuously dumped, posing a potential environmental threat. Herein, the recovery of iron from copper tailings via low-temperature direct reduction and magnetic separation was conducted; process optimization was carried out, and the corresponding mineralogy was investigated. The reduction time, reduction temperature, reducing agent (coal), calcium chloride additive, grinding time, and magnetic field intensity were examined for process optimization. Mineralogical analyses of the sample, reduced pellets, and magnetic concentrate under various conditions were performed by X-ray diffraction, optical microscopy, and scanning electron microscopy-energy-dispersive X-ray spectrometry to elucidate the iron reduction and growth mechanisms. The results indicated that the optimum parameters of iron recovery include a reduction temperature of 1150℃, a reduction time of 120 min, a coal dosage of 25%, a calcium chloride dosage of 2.5%, a magnetic field intensity of 100 mT, and a grinding time of 1 min. Under these conditions, the iron grade in the magnetic concentrate was greater than 90%, with an iron recovery ratio greater than 95%.     

高炉冷却壁温度场分布与热流强度的关系

本文阐述了高炉冷却壁在稳定状态下的温度分布的数值解析方法，分析了热流程度对铜冷却壁和铸铁冷却壁最高温度的影响。比较了铜冷却壁与铸铁冷却壁的优劣。