钨系延期药燃速的影响因素分析

采用试验和数学回归分析的方法探讨了组分配比，钨粉粒度，附加物化钙等主要因素对钨系延期药燃速的影响。     

铝合金焊接快速成形层间间隔时间分析

在焊接成形过程中,热输入的大小对成形零件的质量和性能有很大的影响.将控制层间间隔时间作为控制热输入的一种方法,以交流钨极氩弧焊(AC-TIG)为焊接热源,对5356铝合金进行了多层多道焊的快速成形试验,通过改变层间间隔时间,分析了不同的层间间隔时间对成形零件表面质量和组织相尺寸的影响.结果表明,在相同的焊接参数条件下,变层间间隔时间所成形零件的表面质量和组织相情况均优于等时间间隔时间的成形零件.     

原子吸收光谱法测定铜精矿中微量银

对湖南省麻阳铜矿铜精矿产中的微量银作了原子吸收光谱法测定试验，研究了铜对银的测定干扰，并提出了消除干扰的方法，分析方法准确度与经典方法一致。     

Effect of Al on High-Temperature Oxidation of Cr–W Alloys

The effect of Al on the high temperature oxidation behavior of Cr–10 wt.%W alloy was investigated using a cyclical oxidation test at 1,000 °C in dry air. First, Al was added into the Cr–W alloy as an alloying element up to 8 weight percent. Although alloying with Al reduced the spalling, it did not eliminate it. Secondly, Al was applied to the surface using an aluminizing process. Forming an Al–Cr layer on the Cr–W alloy reduced oxidation rate significantly and eliminated spalling completely.     

福建省连城锰矿4号矿段多金属矿矿床特征及成因分析

对连城锰矿4号矿段的地质特征进行论述，分析了4号矿段多金属矿的成因和矿物的生成顺序，为类似矿床的找矿提供一些借鉴和参考。     

β-钨的亚稳性质

本文研究了β-W所含氧的性质。研究表明,非自燃β-W所含的氧可分为两部分:可逆化学吸附的氧和可能与β-W组成填隙式固溶体的填隙氧。β-W是金属W的一种亚稳相,而填隙氧的存在使β-W的亚稳晶格较为稳定。     

用岩心实验方法测定野外应力

本文介绍了２种由室内岩心实验测定野外应力值和应力方向的方法。实验测定的结果有很好的重复性，与其它方法测得的结果相比较，一致性很好。实验表明：辽河油田冷家堡地区的最大水平主应力方向为北东向；垂向主应力是中间主应力。前者给出了油，水井不宜间隔排列的方向，后者指出人工压裂裂缝是近于直立的。     

Microbial mineral processing: The opportunities for genetic manipulation

Applications of microbiology to mining operations have been surveyed and evaluated. This has been carrried out with a view to seeking directions whereby genetical and molecular biological approaches could be applied to optimise ‘bio-mining’ processes. Copper and uranium are currently recovered from their ores on a commercial scale (to a value of about US$1800 million annually worldwide) using bioleaching systems carried out in the open in biologically uncontrolled conditions. Possibilities also exist for applying bioleaching methods on an industrial scale for the extraction of a number of other metals from sulphide-bearing concentrates. Molybdenum, cobalt and nickel are likely to be most suitable, principally because of their value. Biological ore beneficiation can be used to enhance the recovery of noble metals. Bioleaching systems offer a variety of desirable advantages compared to conventional methods but suffer principally in their relatively low leaching rates. Opportunities exist for the enhancement of bioleaching rates by genetic technologies. These approaches are outlined and discussed. Bioconcentration systems offer possibilities for metal recovery from dilute industrial waste streams and metal refinery effluents and for the heavy metal detoxification of polluted waters. Possible applications of genetic technologies to bioconcentration systems are proposed. Other uses for the mineral leaching thiobacilli, e.g. fossil fuel desulphurisation, are outlined and discussed.     

EDTA─Cu比色法测金矿氰化液中的氰化钠

氰化钠浓度的测定及控制是黄金生产中的重要研究课题。本文研究了用比色法测定金矿氰化液中游离氰化钠的方法，为国内研制氰化钠自动分析仪打下基础。