1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China 2. Tangshan Iron and Steel Group Co., Ltd., Tangshan 063016, Hebei, China
Abstract:Nowadays,there is no coke index that can express coke quality completely.So,from the viewpoint of coke ratio of BF,the six indexes of coke ash,sulfur,M40,M10,CRI and CSR were chosen and given different weights to evaluate coke quality.Evaluation of coke quality for 2000m3 blast furnace was investigated in terms of coke quality indexes,technical and economical indexes of blast furnace and statistics.Scoring system was proposed for the first time and the evaluation model was established.Calculated price of coke, price differential and price ratio were also added to the model.And the model was tested by using 8 kinds of cokes.It is shown that coke quality varies obviously.After the optimization of coke proportion used in blast furnace,the operation of BF keeps stability and coke cost can be decreased.