The nessity of belt reform for choicing waste is simply introduced,the science of belt design is proued,the installation and test way are expounded,and also provides the technical demands and notice,they have a guiding significance for the same one.

One example is discussed in the paper which presents the results of a detailed study undertaken for processing technology, for the comprehensive recovery of the metals in the ore, and confirms the optimizing floation flowsheet of lead-zinc in turn.

According to characteristics of mineral processing technology for greisen-type micronization tungsten-tin ore of low grade.

Effect of breaking on the washing technique and benefit of lump anthracite;