STARTING MATERIAL FOR PRODUCING ROCK WOOL, ITS PRODUCTION AND PRODUCTION OF ROCK WOOL

摘要

PURPOSE:To efficiently mass by-products of various shapes generated in a process for producing rock wool or a rock wool product and to recycle them as starting material for producing rock wool. CONSTITUTION:By-products such as powder, granules and short fibers generated in a process for producing rock wool or a rock wool product are massed by firing in a rotary kiln and used as starting material for producing rock wool. The by-products can efficiently be recycled as starting material for producing rock wool by a cupola system.