RAW COMPOSITION FOR MANUFACTURING MINERAL WOOL BY USE OF SCRAPPED COAL MATERIALS AND MINERAL WOOL USING THE SAME

摘要

The present invention relates to a raw material composition for manufacturing a mineral wool based on recycling of coal waste materials and steel plant slag, a mineral wool manufactured from the same, and a product using the same. According to the raw material composition for mineral wool manufacturing according to the present invention, liquid alkali metal silicate and polyethylene glycol (PEG) are added during mixing of coal ash and limestone as the coal waste materials. As a result, the raw fine powder materials are uniformly mixed and strength improvement is achieved without cracking. Then, forming into coal briquettes is performed for no thermal damage to occur in the event of putting into a melting furnace. As a result, a poor worksite environment attributable to scattering of the fine powder of the coal ash can be improved, the content of the steel plant slag mixed with the coal briquette can be increased, and melting efficiency can be improved. Accordingly, the rate of recycling of the coal waste materials and the steel plant slag can be increased. In addition, added value creation can be achieved to a large extent, imported raw materials such as pulp can be replaced, and price competitiveness can be ensured in the inorganic insulator market because the mineral wool satisfying physical properties to the extent of being utilized as an inorganic nonflammable insulator and papermaking pulp is provided by the use of the raw material composition and the recycling of the coal waste materials and the steel plant slag.