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.

    Keywords:

    Alkaline; Recovery; Slag; Smelting;

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    Cite this article as:

    Chen J, Wang Q, Tian Q, Guo X. Recovery of iron and silicon from Copper smelting tailings. In: Kongoli F, Xueyi G, Shumskiy V, Kozlov P, Capiglia C, Silva AC, Turna T, editors. Sustainable Industrial Processing Summit SIPS 2016 Volume 8: Non-ferrous, Rotary Kiln, Ferro-alloys, Rare Earth, Coal. Volume 8. Montreal(Canada): FLOGEN Star Outreach. 2016. p. 229-230.