Abstract:

With the integration of coal resources and the increase of yield per unit , the original coal washing system can't meet the production requirements. Technical reorganization and expansion was conducted through optimizing the coal washing method and the workshop process arrangement, improving the production process and selection and installation of the main process equipment, according to the principle of saving investment and reducing impact on the existing production system. The improved coal preparation system has production capacity of 11.00 Mt/a, and has four kinds of production mode, which greatly improves the adaptability of coal preparation. Production practice shows that the improved system can not only adjust the product structure and reduce product moisture, but also reduce investment, and achieve the anticipated goal of reconstruction.

Key words: coal preparation plant, production system improvement, coal preparation process, coal washing