金能煤矿联合支护技术的实践与探讨

文章主要针对金能煤矿煤巷支护实例,分析了锚杆联合支护形式的支护方式,并对其施工技术进行了详细分析,实践表明,该支护技术在生产应用中取得较好的成效与经济效益,为类似条件下的煤巷支护提供了借鉴。

煤矿大断面岩石巷道快速掘进技术探讨

文章结合霍州煤电集团金能煤矿大断面岩石巷道概况,通过分析传统岩巷下山掘进技术不足之处,详细探讨了新型机械化作业配套方案、技术实施情况,以及实施效果和目的,可供类似工程参考借鉴。

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.