The technical measures for reduction of medium consumption adopted by Shaozhai Coal Preparation Plant

For reducing consumption of medium, an analysis is made of the factors leading to the high consumption of medium at Shaozhai Coal Preparation Plant. Based on result of analysis, a series of technical and managerial measures is adopted by the plant. These include, among others, use of TDS separator for preremoval of dirts of raw coal underground, increase of the proportion of raw coal treated by coarse coal washing system, improvement of the structure of the deck of the fixed medium predraining screen, optimization of medium draining screen's water spraying process, introduction of intelligent medium density control system, strict control of quality of delivered magnetite powder, and making scientific adjustment of operating conditions of magnetic separator. Adoption of these measures has led to reduction of medium consumption from 0.79 kg/t to 0.47 kg/t, save of operating costs, and creation of a favorable economic performance. The effective measures taken by the plant can serve as a valuable reference for cutting medium consumption by similar plants.