MAGNETIC SEPARATION OF RAW MATERIALS FOR GLASS AND CERAMIC PRODUCTION: PROBLEMS OF FERRUGINOUS IMPURITY CONTROL (REVIEW)

摘要

A large mass of data on magnetic separation of raw materials for the production of glass and ceramic is generalized using a key indicator - the separation efficiency (relative decrease of the ferruginous impurity content); the unsystematic variation of the data is determined. It is established that the results of conventional control (in terms of a "single" form of impurity Fe_2O_3), though providing a basis for judging the presence of a formal concentration dependence, nonetheless do not permit logical systematization of the accumulated mass of data by evaluating media with respect to their "proneness" to separation and evaluation of separators according to their address preference. The method of magnetic control is recommended for purposeful control of impurities which are active in a separator.