KP Kiln Dam Ring Preventive Agent

Abstract

In the causticizing process, the operation for kiln often requires continuous stability, but the operation is stopped by compulsion due to rapid development of dam ring in some cases.
The dam ring is produced in the following manner : Low-melting alkali impurities such as sodium are supplied together with mud as a core from the kiln end and the low-melting substance exposed to high-temperature gas is made viscous to loosely bind the cores. Then, loose binding moved away from the high-temperature gas under the continuous supply of the mud changes into hard binding in the coating due to temperature decrease or re-carbonation. These reactions continuously work resulting in the formation of a large dam.
Our company, long engaged in producing and selling fuel additives, tried relatively simple countermeasures through chemical addition against the dam ring and has proven many achievements. The details of our actual results are explained in this book.