METHOD AND APPARATUS FOR MANUFACTURING ENVIRONMENTALLYALL ASSOCIATED ABRASIVE PRODUCTS FROM HAZARDOUS Wastes (PROCESS AND APPARATUS FOR PRODUCING AN ENVIRONMENTALLY ACCEPTABLE ABRASIVE PRODUCT FROM HAZRDOUS WASTES)

摘要

The present invention relates to a method and apparatus for making environmentally acceptable abrasives that can be used as coated or bonded abrasive or polish particles in the process of making loose particles using harmful inorganic waste. Strong and useful, abrasives having MOH hardness of 7-8 are made from sludge in exhaust control dust or other industrial sectors in the aluminum industry and may contain small amounts of lead oxide and cadmium oxide as reinforcing agents. The abrasive grains are classified according to the creams by air sieving or water precipitation separation method. A method of making an abrasive material comprises removing a soluble salt from a waste stream through a hot water extraction process; Forming a batch mixture by classifying waste streams into different batches using a computer matrix and mixing them with other glass-making materials; Oxidizing the organic compound contained in the batch mixture; Melting the batch mixture to form a vitreous material; And fritting the vitreous material to form an abrasive. The method comprises: a glass fusing unit for oxidizing organic matter; A scrubber to collect particles of vaporized heavy metal oxide and glass-making material; And an oxygen injection system capable of completely burning the organic matter. Addition of certain sodium compounds may lower the melting point of the batch mixture.