The researchers proposed a new process for recovering ammonium tungstate from APT crystallization mother liquor. This process improved the existing problems of high consumption of auxiliary materials, high production cost and large energy consumption in the prior art.

Researchers have proposed a method for producing ammonium paratungstate using tungsten-contained waste material, which has the advantages of short production process. Evaporated and crystallized waste ammonia gas and wastewater can be recycled and reused. And it significantly reduces emissions of waste gas and wastewater. Also, it improves the tungsten recovery rate.

The researchers proposed a preparation method of ammonium paratungstate (APT) using tungsten-contained soft waste material. And the obtained APT can be directly used in the production of tungsten alloys or be applied as additives for chemical products.

Tungsten carbide glass cutter is welcomed for cutting plate glass. And it is the tungsten carbide cutting wheel that plays a role of scoring a line on the glass, and then split it through mechanical stress along the line. The advantage of this method is that the processing method is simple, the glass can be effectively broken, and the cost is relatively low.