Method for burning fly ash by utilizing refuse in ceramsite production

• Main Authors: CHEN WEI, PANG WEIYU, LI SIYUAN, LIN XINCHENG, LIU LIANXIANG, CHEN YUEYUN
• Format: Patent
• Language: Chinese; English
• Published: 11.07.2012
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; LIME, MAGNESIA; METALLURGY; REFRACTORIES; SLAG; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TREATMENT OF NATURAL STONE

The invention relates to the processing technical field of ceramsite production and burning fly ash by utilizing refuse, and provides a method for burning fly ash by utilizing refuse in ceramsite production. In the invention, a clay material is taken as a main raw material, and a rotary-kiln ceramsite production process is adopted, the method comprises the procedures of mixing materials by metering, stirring, homogenizing, calcining in a rotary kiln, cooling clinker and screening by grades and is characterized in that during the process of calcining in the rotary kiln, the fly ash burned by utilizing the refuse is sprayed into a high-temperature section with the temperature not less than 1000 DEG C of the rotary kiln according to 4-15% of the dry weight of the raw material, the fly ash burned by utilizing the refuse is rapidly decomposed at high temperature, and the most part thereof is subject to direct high-temperature reaction with the clay raw material to form ceramsites. During the ceramsite production p