Waste hard alloys mainly include waste tungsten cobalt hard alloys and waste tungsten titanium cobalt hard alloys. The fragments or worn parts generated during their production or use contain valuable metal elements such as tungsten and cobalt. These elements have limited content in primary mineral resources, and the recycling of waste hard alloys can not only effectively alleviate resource shortages, but also significantly reduce production costs and improve economic benefits.

The recycling process of waste cemented carbide requires a series of fine treatments. Firstly, waste hard alloys will be classified and collected according to different types and specifications for subsequent recycling and disposal. Next, through physical processing methods such as crushing, screening, and magnetic separation, the waste hard alloy is crushed into particles of a certain size, and the metal elements are separated from them. This step is simple and easy to implement, with minimal impact on the environment.

For waste hard alloys containing complex metal elements, chemical treatment methods such as acid leaching, alkali leaching, etc. can also be used to dissolve the metal elements before subsequent extraction and separation. Although chemical treatment methods can efficiently extract metal elements, strict control of wastewater and waste residue treatment is also necessary to avoid secondary pollution.

In addition, waste hard alloys can also be melted into alloy ingots through heat treatment methods such as vacuum melting, induction melting, etc., and then subjected to subsequent processing. Although this method has high energy consumption, it can obtain high-quality recycled hard alloys and achieve maximum resource utilization.

It is worth mentioning that the recycling of waste hard alloys not only has economic benefits, but also has important environmental significance. By recycling and processing, the pollution of waste hard alloys to the environment can be reduced, the ecological environment can be protected, and the coordinated development of economy and environment can be achieved. At the same time, the recycling and reuse of waste hard alloys also conforms to the concept of sustainable development, which helps promote the development of circular economy and improve the overall sustainable development level of society.