Hydrothermal precipitation of hematite from the model solution of zinc hydrometallurgical extraction-Reference-Cited by-同舟云学术

Hydrothermal precipitation of hematite from the model solution of zinc hydrometallurgical extraction

Published:2024-01-03 Issue:3 Volume:22 Page:299-309
ISSN:1542-6580
Container-title:International Journal of Chemical Reactor Engineering
language:en
Short-container-title:

Author:

Li Chunlin¹²,Deng Zhigan¹²,Yang Fuxian¹²,Wei Chang¹²,Xingbin Li ¹²,Li Minting¹²

Affiliation:

1. Faculty of Metallurgical and Energy Engineering , Kunming University of Science and Technology , Kunming 650093 , China

2. State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization , Kunming 650093 , China

Abstract

Abstract The effect of temperature and silicon concentration on iron precipitation and morphology of hematite particles was discussed. The results showed that increase of initial silicon centration will lead to the decrease of iron removal efficiency, and the Fe content decreases and S content increases in hematite. Increasing temperature is beneficial to increase iron removal rate and Fe content in hematite, but increasing temperature can not decrease silicon content in hematite. The content of Si in precipitate is proportional to the concentration of silicon in solution. Silicon is adsorbed on the surface of hematite in the form of silicic acid. Hematite particle was agglomerated microsphere. Increasing concentration of silicon will increase the disorder degree of hematite crystallization. With the increase of silicon concentration, the agglomeration of hematite particle was more obvious, and the average particle size of hematite particles increased. At 175 °C, the morphology of iron precipitation particles are composed of flake particles and rhomboid massive particles, but when the temperature rises to 195 °C, the agglomeration phenomenon is obvious, small flake particles agglomerate into microspherical aggregates.

Funder

National Natural Science Foundation of China

Major Scientific and Technological Projects of Yunnan Province in China

Publisher

Walter de Gruyter GmbH

Link

https://www.degruyter.com/document/doi/10.1515/ijcre-2023-0073/pdf

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