Process routing and technique status used in biomass thermolysis liquefaction, chemical liquefaction and co-liquefaction of biomass and coal, as well as characteristics of liquefied products, are introduced with emphasis.

The progress in the research field of thermochemical liquefaction of biomass in recent five years has been reviewed, and the future trends are also pointed out.

Preparation of strontium carbonate from celestite concentrate and its solution chemistry mechanism;

Research on solution chemistry of main metallic ions in slime water;

Studies on Solution Chemistry of Interactions between Cationic Collectors and Aliminosilicate Aluminum Minerals in Bauxite Flotation Desilica;

The immiscible flow of chemical grout in geotechnical medium;

This paper illustrates an application case of chemical grouting material in plugging water under complex conditions, especially when the fault fracture zone are filled with a lot of loose materials.