ORAL
| SESSION: MetalsTueAM-R10 | 3rd Intl. Symp. on Sustainable Metals & Alloys Processing |
| Tue Oct, 24 2017 | Room: Maria Mercedes & Maria Beatriz |
| Session Chairs: TBA Session Monitor: TBA |
15:00: [MetalsTueAM06]
Pyrometallurgical Processing of Different Arsenic Materials and Waste with Arsenic Output to Compact Non-toxic Product Viktor
Shumskiy1 ; V.v.
Klimenko
2 ; A.m.
Mikhailov
2 ;
1VNIItsvetmet, Ust-Kamenogorsk, Kazakhstan;
2, , ;
Paper Id: 152
[Abstract] Increase of arsenic grade in the feed which is processed at different pyrometallurgical operations causes significant complication of the processes, because efficient capturing and disposal of the toxic arsenic-bearing dusts and slurries are required. The general way of arsenic recovery from pyrometallurgical products consists of arsenic transfer from these products to arsenites and arsenates which are slightly soluble in water, followed by burial at special deposits.
Low bulk weight of arsenites and arsenates along with their decomposition when contacting the atmosphere resulted in generation of water-soluble arsenic compounds, require considerable expenses for storage of these toxic wastes.
Arsenic transfer from arsenites and arsenates to more compact and less toxic product, ferric-arsenic alloy (ferric speiss) for example, allows reduction of the expenses and increase of ecological safety. This material which is almost insoluble in water and inert to atmospheric impacts can easily be stored at the open areas in a view of cast blocks. The research results presented in the paper proved the possibility and determined the conditions for efficient pyrometallurgical processing of different arsenic-bearing feed resulted in transfer of the arsenic to ferric speiss.
