Rear-earth-rich, niobium-rich and cand-rich rear sorted tail-ore microcrystal glass and mfg. method

Abstract

The invention relates to a rare earth enriched, niobium, fluorite rare selecting tail mine micro-crystal glass and manufacture method. The feature is that the manufacture raw material of the glass is rare selecting tail mine and quartz sand. The chemical constituent includes SiO2 30-70wt%, CaO 5-20wt%, Al2O3 5-15wt%, CaF 3-15wt%, ReO 3-15wt%, Nb2O5 0-5wt%, and TiO2 0-10wt%. The advantages of the invention are that it has more refined micro-crystal, and the fracture toughness is obviously improved.

Description

Technical field:

[0001] The present invention relates to a rare-earth, niobium, fluorite-rich rare-earth tailings glass-ceramic and its manufacturing method. Specifically, it uses rare-earth tailings as a raw material to prepare the glass-ceramic and its manufacturing method, which belongs to industrial waste Comprehensive utilization of things. Background technique:

[0002] The abandonment of tailings not only occupies a large amount of land, but also causes serious pollution to surrounding water resources and soil. In recent years, CaO-Al 2 o 3 -SiO 2 The research on system glass-ceramics is increasing day by day. The main crystal phase of CaO-Al203-SiO2 system glass-ceramics is mostly β-wollastonite. The system glass-ceramics manufactured by sintering method has high strength and good acid and alkali resistance. and other excellent performance. Although the tailings of a few mines have been recycled and made into glass-ceramics in recent years, additives and nucleat...