国土资源部出台《矿产资源节约与综合利用专项工作管理办法》

日前,国土资源部出台《矿产资源节约与综合利用专项工作管理办法》（以下简称《管理办法》）,要求规范矿产资源节约与综合利用专项工作。矿产资源节约与综合利用专项工作包括＂以奖代补＂和示范工程。＂以奖代补＂是指通过考核矿山企业矿产资源开采回采率、选矿回收率和综合利用率（以下简称＂三率＂）,     

关于“泛电子音乐”及其配器的初探

本文对＂泛电子音乐＂与＂电子音乐＂的差异进行了比较,对＂泛电子音乐＂为何会牵扯到＂配器＂的问题进行阐述,提出了在不同类型＂泛电子音乐＂的配器过程中需要注意的问题。     

浅谈标语的汉英翻译

提出了当前汉语标语英译中存在的问题,分析了其产生问题的原因及其解决的办法,并提出了标语翻译工作过程中应遵循的原则.     

直流系统绝缘不良误报警问题分析与处理

通过检查处理一起直流绝缘不良误报警问题,分析了问题形成的具体原因,进而提出了合理解决现场存在问题的办法及注意事项。     

Φ4×45m单筒冷却机的改造

结合生产实际 ,对冷却机存在的问题进行了分析 ,并提出了改进问题的办法 ,从而使冷却机的运转率得以提高。     

论人力资源管理对企业战略目标实现的影响

多数矿山企业把＂以人为本＂作为企业人力资源的重要发展战略方向,通过分析矿山企业的现状和存在的问题,提出了人力资源管理促进企业战略目标实现的几点建议。     

选题组稿与科技期刊质量关系研究

文章结合办刊实践阐述了科技期刊定位、选题的目的意义以及操作方法。对现实中存在的问题进行了分析 ,并提出了解决的措施办法     

“越界”的必要——对设计艺术学科专业的交叉与相互影响的思考

本文通过对当前设计艺术类专业的现状及问题的分析,探讨了学科交叉与发展的态势,同时对设计教育中的专业融合与协作提出了建议,提倡学科专业和设计师的发展在＂泛＂的基础上实现＂精＂的理念,希望能引发行业和教育同仁的思考。     

济钢120t转炉“少渣炼钢”工艺的实践

对济钢120 t转炉在应用＂少渣炼钢＂工艺中出现的问题进行了分析,提出了相应的解决方案。通过采取优化控制参数和改进工艺操作等措施,解决了＂少渣炼钢＂工艺在试验推广阶段遇到的冶炼周期可控性差、兑铁时易发生喷溅、开吹不易起燃、前期脱磷效率低、二次降枪时易发生喷溅等技术难题。     

氯化提金生产实践

介绍了从银电解阳极泥中回收金的方法和各项技术经济指标、分析了存在的问题．提出了进一步解决的办法。     

钨锡细泥回收工艺的改进及生产实践

简要分析了大江选厂和大龙山选厂的矿石性质和原细泥回收工艺，提出了细泥回收工艺的改进意见。近两年的生产实践证明，细泥回收工艺改进是成功的，大江选厂的钨锡细泥实收率分别提高了25．42％、26．67％，大龙山选厂的钨钼细泥实收率分别提高了16．43％、2．21％，年新增效益96．455万元，经济效益显著。     

攀钢选矿厂过滤作业现状浅析

介绍了攀钢选矿厂磁选车间过滤作业的现状及存在的问题，提出了改善过滤作业工作状况，降低过滤精矿水分的具体措施与设想。     

铁矿选厂尾矿综合利用研究

近年来,随着我国钢铁产量的增加,铁矿选矿过程排放的尾矿量呈逐年显著递增趋势,铁选尾矿再开发利用了成为铁矿山资源开发的一项重要任务。文章以某尾砂综合利用项目为实例,论述了铁矿选厂尾砂再选铁精矿以及剩余尾砂生产免烧砖工艺方法及经济效益,指出了铁矿选厂尾砂今后主要综合利用方向。     

从包钢选矿厂选铁尾矿中回收稀土研究概况与生产实践

本文对包钢选矿厂选铁尾矿矿石性质进行了小结。阐述了包钢选矿厂自投产以来,在回收铁矿物同时,回收稀土矿物的发展情况,并较重点介绍了国内研究单位所进行的选矿研究概况及目前选矿厂稀土生产实践。指出,要提高稀土产量,应从现有选铁流程中,充分利用强磁尾矿和强磁中矿的稀土矿物,并且开发和利用尾矿坝。     

我国矿产资源的缺缺与可持续利用

矿产资源是一种重要的自然资源，是社会和经济发展的物质基础，矿产资源是典型的不可再生资源，所以如何实现矿产资源的可持续利用具有十分重要意义。分析了我国矿产资源的优势与存在的问题，提出了矿产资源可持续利用应注意的问题。     

A possible method for the characterization of amorphous slags: Recovery of refractory metal oxides from tin slags

As X-ray, neutron scattering, and vibrational spectroscopy are not useful for amorphous solids characterization, microprobe analysis is used in determining the composition of these materials. The correlation coefficient matrix between the slag’s elements is obtained by a simple computer program which is commercially available. This matrix is employed for the constitution of the neighborhood of an element, which may be called the “pseudo-structure” (PS). The proposed method is a statistical view of the probable associations between the elements. It gives an insight into the amorphous solids' structure. The lixiviation of tin slags in order to recover the refractory metals they contain is used to illustrate the importance of the PS. A multistage acid-basic (AB) leaching leads to the dissolution of the matrix composed of Ca, Al, Fe, Mn, Si, ... oxides and the concentration of refractory metal oxides in the residues. The optimum tantalum and niobium recovery rates are 93 and 78 pct, respectively. The results of this research indicate that the leaching of the amorphous tin slag is a structure-sensitive operation. However, one may emphasize that the PS of amorphous solids is a simplification of the real neighborhood of ele-ments. It may be considered as a complement to other methods of investigation of the amorphous solids and may facilitate the hydrometallurgical process planning. K. MALAU, formerly Researcher Mineral Processing and Environmental Engineering, INPL. M.-CH. MEYER-JOLY, formerly Researcher, Mineral Processing and Environmental Engineering.     

非洲铁矿石资源状况及未来开采动态

非洲地区矿产资源丰富,铁矿石探明储量300亿t,有着极大的勘查、开发潜力,但同时到非洲投资开矿有许多需要注意的问题。     

Thermal treatment of complex sulfide ores in N2 and H2 Atmospheres: A new approach for the extraction of their valuable elements

The thermal treatment of natural sulfidic minerals such as sphalerite, galena, chalcopyrite, and pyrite in an N₂ or H₂ atmosphere was studied to examine the nature of reactions taking place. Such treatments have the potential of avoiding sulfur dioxide production which is associated with the roasting of complex sulfide ores (CSOs). The thermal treatment of CSO concentrates at temperatures less than 1000 °C in a nitrogen atmosphere leads to the decomposition of the pyritic matrix to pyrrhotite and the volatilization of sulfur, galena, and some of the CSOs’ trace elements. Treating the CSO in a reducing atmosphere converted sphalerite to zinc and produced a solid containing Cu^o, Fe^o, and silicoaluminates. Selective dissolution of copper may be achieved by a hydrometallurgical process. Hydrogen sulfide could be reacted with pyrrhotite to form pyrite and hydrogen. A flow sheet is proposed. M.-CH. Meyer-Joly formerly Researcher with Mineral Processing and Environmental Engineering, Institut National Polytechnique de Lorraine K. MALAU formerly Researcher with Mineral Processing and Environmental Engineering, Institut National Polytechnique de Lorraine     

从尾矿中回收氟碳铈矿和独居石的浮选研究

研究了包钢选矿厂尾矿的矿物组成与稀土浮选指标的关系以及浮选的主要工艺参数和药剂组合对稀土浮选指标的影响。通过对浮选流程结构的研究,提出了二个新的浮选流程。与现选矿厂生产正在使用的浮选流程相比,它们具有流程结构简单和稀土选别指标高的优点。     

Improvement in toughness of Fe-Cr-Mn-C steels by thermal-mechanical treatments

High-Cr (about 10 wt pct) Fe-Cr-Mn-C microcomposite lath martensite-austenite structural steels have been developed in order to achieve high strength and high toughness for applications in corrosive environments. Processing by controlled hot rolling and air cooling produces a finegrained alloy with excellent toughness. The alloys are air hardenable, and the microstructure consists of lath martensite packets with retained austenite around the laths. The laths contain fine intralath autotempered carbides. The mechanical properties of the steel so produced are found to be superior to those treated by conventional methods of single or cyclic austenitization treatment. Optical metallography, transmission electron microscopy and scanning electron microscopy (SEM) have been used to characterize the effect of various process variables on the mechanical properties. R. RAMESH and N.J. KIM, formerly with the Department of Materials Science and Mineral Engineering, University of California at Berkeley