| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
PbZn 2020: The 9th International Symposium on Lead and Zinc Processing
|
| Presentation Title |
Recent Operational Improvements of Hematite Plant at Akita Zinc Co.,Ltd |
| Author(s) |
Dai Matsuura, Yasuo Usami, Kenji Ichiya |
| On-Site Speaker (Planned) |
Dai Matsuura |
| Abstract Scope |
AKITA ZINC Co., Ltd. (Iijima Zinc Refinery), jointly owned by DOWA METALS & MINING Co., Ltd.(DMM) and another non-ferrous metal company, has used the company’s own hematite process for iron control since the beginning of operations in 1971.The amount of zinc leach residue for the hematite plant has been increasing recent years due to the increase of iron content and decrease of zinc grade in concentrate .In addition, some quality issues of by-product has been occurred recently. The following solutions were carried out for operation stability of hematite plant.
<br><br>
1.Zinc leach residue treatment increase<br>
a.Renewal of SO2 leaching autoclave<br>
b.Improvement of cake-washing method<br>
2.By-product quality improvement<br>
a.Modification of filter for de-arsenic process<br>
<br>
Keywords: hematite plant, autoclave renewal, cake-washing method improvement,filter modification |
| Proceedings Inclusion? |
Planned: |