THERMODYNAMICS STUDY ON THE DECOMPOSITION OF CHROMITE WITH KOH

CAS OpenIR

	THERMODYNAMICS STUDY ON THE DECOMPOSITION OF CHROMITE WITH KOH
	Z Sun; S L Zheng; Y Zhang
	2007
Source Publication	金属学报：英文版
ISSN	1006-7191
Volume	20.0 Issue:003 Pages:187
Abstract	Institute of Process Engineering, Chinese Academy of Sciences, China, has proposed a method for oxidative leaching of chromite with potassium hydroxide. Understanding the mechanism of chromite decomposition, especially in the potassium hydroxide fusion, is important for the optimization of the operating parameters of the oxidative leaching process. A traditional thermodynamic method is proposed and the thermal decomposition and the reaction decomposition during the oxidative leaching of chromite with KOH and oxygen is discussed, which suggests that chromite is mainly destroyed by reactions with KOH and oxygen. Meanwhile, equilibrium of the main reactions of the above process was calculated at different temperatures and oxygen partial pressures. The stable zones of productions, namely, K2CrO4 and Fe2O3, increase with the decrease of temperature, which indicates that higher temperature is not beneficial to thermodynamic reactions. In addition, a comparison of the general alkali methods is carried out, and it is concluded that the KOH leaching process is thermodynamically superior to the conventional chromate production process.
Keyword	铬铁矿热力学分解氧化性
Language	英语
Document Type	期刊论文
Identifier	http://ir.ipe.ac.cn/handle/122111/46497
Collection	中国科学院过程工程研究所
Affiliation	中国科学院过程工程研究所
First Author Affilication	中国科学院过程工程研究所
Recommended Citation GB/T 7714	Z Sun,S L Zheng,Y Zhang. THERMODYNAMICS STUDY ON THE DECOMPOSITION OF CHROMITE WITH KOH[J]. 金属学报：英文版,2007,20.0(003):187.
APA	Z Sun,S L Zheng,&Y Zhang.(2007).THERMODYNAMICS STUDY ON THE DECOMPOSITION OF CHROMITE WITH KOH.金属学报：英文版,20.0(003),187.
MLA	Z Sun,et al."THERMODYNAMICS STUDY ON THE DECOMPOSITION OF CHROMITE WITH KOH".金属学报：英文版 20.0.003(2007):187.

Files in This Item:
There are no files associated with this item.

If you have any objections to this item, please fill out the form below and the administrator will contact you as soon as possible.
Content:
Email：	*
Institution:
Verification Code:	Refresh

Any comments and suggestions are welcomed.
Title:	*
Content:
Email：	*
Verification Code:	Refresh

中国科学院过程工程研究所机构知识库