加入WTO对中国铜工业的影响

本文阐述了中国加入WTO后对中国铜工业的直接与间接影响。     

连铸坯角部纵裂分析及对策

通过分析电炉连铸坯产生角部纵裂纹的原因，提出了具体的控制措施，加强原材料的质量控制和连铸工艺过程的控制对防止铸坯产生角部纵裂纹有着重要作用。     

冷却水对结晶器铜管使用寿命影响的研究

本文分析了连铸结晶器铜管用的冷却水的流量，温度，流速，水质对铜管寿命的影响。找出了相关因素，提出了相应的对策，使结晶器铜管寿命大幅提高。     

4-甲氧基-1-氧代-2,2,6,6-四甲基哌啶催化氧化维生素A醇制备维生素A醛

以维生素A醇为原料，用4-甲氧基-1-氧代-2，2，6，6-四甲基哌啶为主催化剂，氯化亚铜为辅催化剂，通氧气制备了维生素A醛。     

板坯连铸机直形结晶器铜板设计

对直形结晶器和弧形结晶器进行比较，重点介绍直形结晶器铜板材质选择、参数确定以及冷却水槽的设计原则。     

有关变频器驱动电动机中浪涌对策的基础研究

变频驱动的电动机,为满足节能及小型化、高性能化等市场需求,必然要面对严酷的使用条件,其中,变频器产生的浪涌(surge)对电动机绝缘系统会产生不利影响。"明电"公司在掌握变频器浪涌对电机影响的同时,使用了耐局部放电性能优越的漆包线。针对该绝缘系统的适用性进行了不断的探索研究。     

含金多金属混合矿选矿试验研究

通过对洋鸡山金矿含金多金属混合矿的两个选矿工艺流程的研究及分析比较，铜优选浮选－－硫精矿焙砂氰化－－尾矿全泥氰化工艺流程比浮选－－氰化－－浮选工艺流程优越，技术可行，经济合理。     

Use of mesophilic and thermophilic bacteria for the improvement of copper extraction from a low-grade ore

Bioleaching was examined for copper extraction from a low grade ore using mesophilic and moderate thermophilic bacteria. Five equal size columns were used for the leaching of the ore. Sulfuric acid solution with a flow rate of 3.12 L.m-2.h-1 and pH 1.5 passed through each column continuously for 90 d. In the first and the second column, bioleaching was performed without agglomeration of the ore and on the agglomerated ore, respectively. 28wt% of the copper was extracted in the first column after 40 d, while this figure was 38wt% in the second column. After 90 d, however, the overall extractions were almost the same for both of them. Bioleaching with mesophilic bacteria was performed in the third column without agglomeration of the ore and in the fourth column on the agglomerated ore. After 40 d, copper extractions in the third and the fourth columns were 62wt% and 70wt%, respectively. Copper extractions were 75wt% for both the columns after 90 d. For the last column, bioleaching was performed with moderate thermophilic bacteria and agglomerated ore. Copper extractions were 80wt% and 85wt% after 40 and 90 d, respectively. It was concluded that crushing and agglomeration of the ore using bacteria could enhance the copper extraction considerably.     

磷脱氧铜无缝管断裂原因分析

用ＳＥＭ等方法对电冰箱压缩机用磷脱氧无缝铜管异常断裂进行了分析。结果表明，夹杂物局部偏聚是铜管断裂的内在原因，焊接时产生的热应力及弯曲变形是铜管断裂的外部诱发因素。有效的改进措施是严格控制杂质含量、将高温焊接工艺改为低温焊接工艺。     

铜对球墨铸铁组织和性能的影响

加铜的球墨铸铁无论铸态或热处理都引起了组织及性能的变化，这种改变拓宽了球墨铸铁的应用范围，本文介绍了铜在球铁中的加入工艺及其对组织和性能的影响。