Industrial tests on the improvement of coarse-grained alumina at the PAR-SUAL Branch are conducted during the period of stable operation of the enterprise. Hydrate hydro classification was included in the apparatus-technological scheme of aluminate solutions processing on special hydro classifiers (HC) of VAMI design. The unbalanced part of fine fractions was eliminated in production.
The issues of optimization of nepheline-limestone charge preparation processes based on the principle of independence of grindability of individual components are considered. Recommendations are given for improving the efficiency of grinding equipment at the PAR-SUAL Branch.