JP2864323B

• Main Authors: SUZUKI KENJI, YAMAURA TAKESHI, OGATA KOJI, NAGAYOSHI GIICHI, MYANO KEIICHIRO
• Format: Patent
• Language: English
• Published: 03.03.1999
• Edition: 6
• Subjects: BLASTING; CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMISTRY; DISPOSAL OF SOLID WASTE; FURNACES; FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; GLASS; HEATING; JOINING GLASS TO GLASS OR OTHER MATERIALS; KILNS; LIGHTING; MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES; MECHANICAL ENGINEERING; METALLURGY; MINERAL OR SLAG WOOL; OPEN SINTERING OR LIKE APPARATUS; OVENS; PERFORMING OPERATIONS; RECLAMATION OF CONTAMINED SOIL SOIL; RETORTS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS; TRANSPORTING; WEAPONS

An apparatus is presented for economically making crystallized glass products from waste ash produced from the sewage sludge dewatered by organic matters, which is usually regarded to be difficult to process. The melting is performed in two furnaces: the primary melting furnace and the secondary melting furnace. The primary furnace melts waste ash and the primary melt is charged into the secondary melting furnace. The glassy material produced in the secondary melting furnace is charged into a crystallization furnace to convert the glassy material to a crystallized glass product. This basic configuration of the apparatus allows the production of either irregular shaped crystallized products, such as crushed stone like products, or crystallized manufactured products, such as tiles and blocks, depending on the combination of processing equipment and their operating conditions. The apparatus enables the production of crystallized glass products from waste ash feed economically, because of the flexibility and versatility in the design of the apparatus.