In order to optimize the existing production process, in March 2010, the company invested 200 million yuan in independent innovation to build a 1 million tons/year lime project. The process system of this project adopts a vertical preheater-rotary kiln-vertical cooling system, which consists of a vertical preheater, a rotary kiln, a vertical cooler, a flue gas treatment system (including a waste heat boiler), a raw material transportation system, and a finished product transportation system. system, environmental protection dust removal system, etc. form a complete production line. The entire production line adopts the DCS control system with advanced technology and reliable performance, and is operated and managed centrally in the main control room. In particular, it has introduced advanced active lime kiln structure; it is the first in the same industry in China to install a waste heat boiler at the end of the kiln, and comprehensively utilizes the waste heat of the exhaust gas at the end of the kiln to generate steam, which can not only greatly reduce the operating cost of the lime project, but also protect the environment.
The project is scheduled to be completed by the end of November 2010. It is part of the Oriental Hope circular economy industry chain. After completion and operation, all the lime produced will be used for alumina production, and annual sales revenue will be 450 million yuan. , with profits and taxes of 50 million yuan. At present, about 50% of the civil engineering work has been basically completed, and equipment procurement has basically been completed.