2016-Sustainable Industrial Processing Summit
SIPS 2016 Volume 8: Non-ferrous, Rotary Kiln, Ferro-alloys, Rare Earth, Coal
| Editors: | Kongoli F, Xueyi G, Shumskiy V, Kozlov P, Capiglia C, Silva AC, Turna T |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2016 |
| Pages: | 350 pages |
| ISBN: | 978-1-987820-50-8 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Recovery of iron and silicon from Copper smelting tailings
Jingzhi Chen1; Qinmeng Wang1; Qinghua Tian1; Xueyi Guo1;1CENTRAL SOUTH UNIVERSITY, Changsha, China;
Type of Paper: Regular
Id Paper: 169
Topic: 6
Abstract:
Low-temperature alkaline smelting method was applied to treat Copper smelting tailings to separate iron and silicon from tailings and obtain-high economic value iron oxide red. The effects of the alkaline mineral ratio, solid-liquid ratio, smelting temperature and time, leaching temperature and time on the separation of Fe and Si were studied by single factor experiments. The optimum conditions were obtained as: an alkaline mineral ratio of 1.5:1, solid-liquid ratio of 1:5, smelting temperature of 823k, smelting time 1.5 hour, leaching temperature of 313K and leaching time 20 min. Under these optimum conditions, the content of Fe increased from 47.00% to 62.15%, the content of Si decreased from 17.44% to 1.74%, Si/Fe decreased from 0.371 to 0.03. The results indicated that low-temperature alkaline smelting-leaching method can effectively and enrich of Fe and Si from bottom blowing smelting copper tailings. The prepared iron oxide red has the iron oxide percentage composition for 80.75 %, which corresponds to the H102 in the GBT 1863-2008 standards.