Calcining of petroleum coke in shaft kilns-A technology with great merits
The requirement for anode grade petroleum coke is constantly growing. World wide sulfur and metal contents are increasing making it difficult for the industry to produce anodes with acceptable quality. A considerable amount of the World production of green coke, which has acceptable properties in terms of impurities, is very fine and has high amounts of Volatile Combustible Matters (VCM). Such coke can not be calcined in rotary kilns since productivity is reduced and quality of the calcined coke is unsatisfactory. Large quantities of coke with low metal and sulfur contents are burned as fuel material. China, Brazil, Argentina and Indonesia e.g. have increasing quantities of such coke available. Only China is using it for calcination by applying the Shaft Kiln Technology, a technology developed in Europe some seventy years ago which got totally forgotten in the Western calcining industry. Hundreds of shaft kilns are operated in China. The technology is very simple and requires very little maintenance. The process is energy self sufficient. During calcination low loss of solid materials occurs resulting in ayield (dry basis) of 85％ (75 - 78％ for rotary kiln) and therefore Co2emission is 40％ lower.
Ulrich Mannweiler Mannweiler Consulting Zurich, Switzerland Werner K. Fischer Raymond Perruchoud
R&D Carbon Ltd., Sierre, Switzerland
国际会议
XVIII International Symposium of ICSOBA(第18届国际铝土矿、氧化铝及铝工业学术年会)
郑州
英文
523-530
2010-11-25（万方平台首次上网日期，不代表论文的发表时间）