2020年4月8日星期三

The Rebirth of Tungsten Tailings -- Glass Ceramics (1)

Tungsten tailings are the wastes left in the production of mines. China is a big producer of tungsten resources.

It is said that all large tungsten mines have a large number of tailings reservoirs, and the tailings reservoirs accumulated over several decades or even centuries have become too large to imagine. Some tailings which have reached the marginal grade can be extracted again, but most of the tailings are no longer meaningful. How to find a way out for these tailings?

Tailings treatment has always been a thorny problem in mining enterprises, not only copper and iron, tungsten ore also racking their brains for tailings to find a new way out, the most common tungsten tailings application is the manufacture of cement, tile. However, with the development of industrial technology, people found that it is a waste that tungsten tailings are used to make cement and bricks. In recent years, scientists have invented a material between ceramic and glass, which has remarkable function in the fields of electronics, architecture, biochemistry and so on, it is glass ceramics. Scientists also found that tungsten tailings are the most suitable raw materials for treating glass ceramics.

glass ceramics image

Glass ceramics, also called microcrystalline jade, is a polycrystalline material prepared by melting, quenching, and controlling crystallization. It concentrates on the three advantages of glass, ceramics and natural stone. Ordinary glass is brittle because of its irregular arrangement of atoms. Glass ceramics, like ceramics, are made up of crystals, with regular atomic arrangement, stronger toughness than glass, and higher brightness than ceramics, and are superior to natural stone in performance. In addition to the building curtain wall and interior high-grade decoration, it is also made into mechanical structural materials, electronic and electrical insulation materials, bottom material of large-scale integrated circuits, microwave oven heat crack ware, chemical engineering and anticorrosion materials and mines wear-resistant materials etc.. It is a new material with great prospects for development.

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