Kinetics of Reductive Leaching of Low-grade Pyrolusite with Molasses Alcohol Wastewater in H<sub>2</sub>SO<sub>4</sub>

粟海锋; 刘怀坤; 王凡; 吕小艳; 文衍宣

doi:10.1016/S1004-9541(09)60121-X

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Kinetics of Reductive Leaching of Low-grade Pyrolusite with Molasses Alcohol Wastewater in H₂SO₄

Updated：2026-01-06

- Kinetics of Reductive Leaching of Low-grade Pyrolusite with Molasses Alcohol Wastewater in H₂SO₄
- Kinetics of Reductive Leaching of Low-grade Pyrolusite with Molasses Alcohol Wastewater in H₂SO₄
- 中国化学工程学报（英文版） 2010年18卷第5期页码：730-735
- Affiliations：
  
  1. School of Chemistry and Chemical Engineering, Guangxi University,Nanning,China,530004
  2. Educational Administration Department, Guangxi University,Nanning,China,530004
- Author bio：
- Funds：
  
  Supported by the National Natural Science Foundation of China (20866001);the Natural Science Foundation of GuangxiProvince (0832035)
- DOI：10.1016/S1004-9541(09)60121-X
  中图分类号：
- 纸质出版：2010
- Accepted：
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粟海锋, 刘怀坤, 王凡, 等. Kinetics of Reductive Leaching of Low-grade Pyrolusite with Molasses Alcohol Wastewater in H₂SO₄[J]. 中国化学工程学报（英文版）, 2010,18(5):730-735. DOI: 10.1016/S1004-9541(09)60121-X.

SO
粟海锋, 刘怀坤, 王凡, 等. Kinetics of Reductive Leaching of Low-grade Pyrolusite with Molasses Alcohol Wastewater in H₂SO₄[J]. 中国化学工程学报（英文版）, 2010,18(5):730-735. DOI: 10.1016/S1004-9541(09)60121-X. DOI：

SO DOI： 10.1016/S1004-9541(09)60121-X.

摘要

Abstract

The kinetics of reductive leaching of manganese from low grade pyrolusite in dilute sulfuric acid in the presence of molasses alcohol wastewater was investigated. The shrinking core model was applied to quantify the effects of reaction parameters on leaching rate. The leaching rate increases with reaction temperature

concentrations of H

and organic matter in molasses alcohol wastewater increase and ore particle size decreases. The leaching process follows the kinetics of a shrinking core model and the apparent activation energy is 57.5 kJ·mol

-1

. The experimental results indicate a reaction order of 0.52 for H

concentration and 0.90 for chemical oxygen demand (COD) of molasses alcohol wastewater. It is concluded that the reductive leaching of pyrolusite with molasses alcohol wastewater is controlled by the diffusion through the ash/inert layer composed of the associated minerals.

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Kinetics of Reductive Leaching of Low-grade Pyrolusite with Molasses Alcohol Wastewater in H2SO4

Kinetics of Reductive Leaching of Low-grade Pyrolusite with Molasses Alcohol Wastewater in H2SO4

DOI：10.1016/S1004-9541(09)60121-X

摘要

Abstract

关键词

Keywords

references

Kinetics of Reductive Leaching of Low-grade Pyrolusite with Molasses Alcohol Wastewater in H₂SO₄

Kinetics of Reductive Leaching of Low-grade Pyrolusite with Molasses Alcohol Wastewater in H₂SO₄