In this study, the calcined coal gangue was mixed with Al powder at different mass fractions (5wt%〜35wt%). After being pressed 80MPa and sintered 1200°C for 2h, gangue/Al cermet material obtained. The phase composition, microstructure mechanical properties of were studied. results show that main components prepared materials are Al, mullite, AlN, alumina silicon. With increase powder, hardness ...

Lithium-bearing polymetallic pegmatite ores are an important raw material for lithium extraction. They contain not only but also other associated elements such as beryllium, tantalum, and niobium, with great recovery values. It is therefore often called lithium-bearing ore (LPPO). The utilization of Be-bearing minerals in LPPOs have yet to be further studied. This paper briefly expounds the geo...

In recent years, with the rapid development of coal-mining industry, output gangue has increased at a faster pace, while its utilization remains relatively low. The accumulation large amount brought about environmental problem. order to improve rate waste gangue, and solve secondary problems caused by pollution, this paper conducted research on an economic environmentally friendly gangue-based ...

To address the problem of surface subsidence caused by compression filling gangue in deep mines, a layered compaction test was designed based on zonation failure overburden goaf and property gangue. The deformation characteristics natural water-bearing states were obtained. during 0~100 kN loading stage an approximately positive S-type, which reflects relative “advancement” terms deformation. 1...