|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||PbZn 2020: The 9th International Symposium on Lead and Zinc Processing
||Recent Development of EAF Dust Treating at Shisaka Smelting Co., Ltd
||Satoru Takaya, Naoki Kubota, Hiroshi Watanabe, Takao Kudo
|On-Site Speaker (Planned)
Shisaka Smelting Co., Ltd. has recovered crude zinc oxide from electric arc furnace dust (EAF dust) by the Waelz kiln process since 1977. When the operation started, malfunctions frequently occurred in the granulation process which was previous process of a reduction roasting process. We stopped this process and shifted to the process directly charging EAF dust in the reduction rotary kiln. As a result, we had been weak in treating high zinc EAF dust for a long time.To improve the disadvantage, we have introduced the new granulation process which is off-line since 2011. Thereby, zinc recovery rate in the reduction rotary kiln greatly increases and the capacity treating high zinc EAF dust reaches 50,000 tons per year.