Ultra-fine grained tungsten carbide-based hard alloy has high strength and high hardness "double high" performance, which can be used in the production of printed circuit board micro drill bits, dot matrix printer printing needles, precision tooling, and difficult material tools.

There has always been a low (poor) grade tungsten-tin associated ore in the tungsten-tin production industry, which is particularly common in Yunnan. Because the material and chemical properties of the two metal compounds are similar, the separation of the two metals in the industrial production process has always been a difficult problem that puzzles the industrial production technology. The traditional production method has been characterized by high pollution and high energy consumption, which makes it difficult to conform to the national industrial policy.

Tungsten oxynitride NOx gas is one of the culprits in destroying the ecological environment on which humans depend. According to medical data, short-term exposure to NOx gas may cause respiratory diseases, such as airway inflammation in healthy people, and aggravate the condition of people with asthma. If exposed to NOx for a long time, it may cause pulmonary edema and even death.

The tungsten-containing soft waste referred to in the recovery and treatment of tungsten wastes is a kind of soft waste such as leaching residue in the production process of ammonium metatungstate (AMT), ammonium paratungstate flooring material and yellow tungsten flooring material, air pipe material, ammonium paratungstate evaporation mother liquor produced in the production process of tungsten oxide. Inevitably, tungsten still exists in these tungsten-containing wastes. It can be recycled.