Study of ZnO Neutralization &amp; Iron-Precipitation Test in Zn Concentrate Pressurization and Lixiviation

Ting Xi Zhou; Jin Hui Peng; Zhi En Kuang; Ji Kun Wang

doi:10.4028/www.scientific.net/AMR.968.138

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 968Study of ZnO Neutralization &...

Study of ZnO Neutralization & Iron-Precipitation Test in Zn Concentrate Pressurization and Lixiviation

Abstract:

The effect of ZnO dosage, iron remover and the time duration of neutralization and iron-precipitation on iron removal percentage was investigated to find out the optimal parameters in the technique of ZnO pressurization, neutralization and iron removal, and the residual acid from pressurization lixiviation and neutralization was assayed by using ZnO ore to neutralize and remove iron from lixiviated mineral pulp containing residual acid 20 g/l by simulation of Zn concentrate pressurization and lixiviation in a 2 L autoclave, in order to simplify Zinc pressurization process. The result showed that when Zn lixiviation percentage is higher than 98 %, up to 99.74 % of iron in the lixiviation fluid could be precipitated and the lixiviated fluid contains iron at the level of 20 mg/l, meeting the requirement on pre-purification fluid. Keywords: Zinc Sulfide Concentrate; Pressurization and Lixiviation; ZnO Ore; Neutralization and Iron Precipitation

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Periodical:

Advanced Materials Research (Volume 968)

Pages:

138-141

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.968.138

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Online since:

June 2014

Authors:

Ting Xi Zhou*, Jin Hui Peng, Zhi En Kuang, Ji Kun Wang

Keywords:

Iron Precipitation, Lixiviation, Neutralization, Pressurization, Zinc Sulfide Concentrate, ZnO Ore

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