采矿业与矿物部门:非洲发展的掣肘因素

非洲丰富的矿产资源对于其发展具有非同寻常的潜在贡献.本文罗列了这些财富发挥作用的一些制约因素.提出了保障采矿业对地区、国家和地方的可持续性发展做出贡献的建议.抵触的消除,使这些资源转向民间开发有了可能.

独联体国家的矿物原料部门是其经济发展的基础

在前苏联基础上形成的独联体已经走过了七年的历程,这些国家大体上都各自为政,实际上在所有的经济领域都奉行独立的政策。七年来都在寻求民族的稳定之路,寻求国家体制和政治体制完善的道路,寻求溶人世界市场的捷径。

Ash-and-Slag Wastes of Energy Sector as Raw Material for Production of Rare-Earth Metals and Alumina

The results to develop a complex technology of co-extraction of germanium and gallium from the ash-and-slag wastes of coal combustion in Ukraine were presented. Based on the study of phase changes occurring in initial raw materials as a result of its processing, it was proposed to carry out a preliminary enrichment of the raw materials in order to produce secondary sublimates. Their further processing involves a combination of leaching soluble material with distillation of germanium in the form of tetrachloride. The resulting acidic solutions are trended to the gallium extraction. Optimum conditions of carrying out of processes are recommended.The chemical and phase composition of the resulting dump products and solutions have been defined. On the basis of it ways of their processing for the purpose of reception of alumina and building materials are recommended.