硫酸亚铁还原硫酸浸取软锰矿动力学研究

Abstract

Abstract: The leaching kinetics of pyrolusite by sulfuric acid with ferrous sulfate as reducing agent was studied.The effects of stirring intensify，leaching temperature，initial concentration of sulfuric acid，initial concentration of ferrous sulfate，and initial particle size of mineral powder on the leaching rate of manganese were investigated.The results showed that the leaching rate of manganese was increased with the increase of the stirring speed，leaching temperature，sulfuric acid concentration，ferrous sulfate concentration and the decrease of diameter of pyrolusite.The influence order was particle size of mineral powder， concentration of sulfuric acid，and concentration of ferrous sulfate.The pyrolusite leaching process was controlled by the diffusion through the solid film.The macroscopic kinetic equation of the leaching process was：1-2/3x-（1-x）2/3= 1.95（1/d02）c■c■exp［-29 680/（RT）］t，and the apparent activation energy was 29.68 kJ/mol.

Key words: pyrolusite, ferrous sulfate, sulfuric acid, leaching kinetics, manganese leaching rate

CLC Number:

TQ125.14

CUI Yi-Shun- , XIANG Yun-Gang. Study on sulfuric acid leaching kinetics of pyrolusite with ferrous sulfate as reducing agent[J]. INORGANICCHEMICALSINDUSTRY, 2015, 47(1): 26-.

[1]	LI Huaquan, QIU Guibao, LÜ Xuewei. Research progress of titanium dioxide preparation technology [J]. Inorganic Chemicals Industry, 2024, 56(10): 20-27.
[2]	XIA Guiying, YANG Liuchun, YUAN Zhiye. Study on direct leaching of rare earth elements from phosphogypsum with sulfuric acid [J]. Inorganic Chemicals Industry, 2024, 56(1): 107-113.
[3]	ZHU Wanye,TANG Ding,CHI Heting,LIAO Xianghui,ZHUANG Rongchuan,WANG Qiankun,SHEN Qingfeng. Study on impurity removal rule of ferrous sulfate from by-product of titanium dioxide by crystallization purification [J]. Inorganic Chemicals Industry, 2022, 54(7): 105-109.
[4]	TANG Shuyang,GUO Yufeng,ZHENG Fuqiang,CHEN Feng,WANG Shuai,YANG Lingzhi. Present situation and prospects of preparation methods of titanium dioxide [J]. Inorganic Chemicals Industry, 2022, 54(7): 27-34.
[5]	FAN Zhenzhen,ZHAO Yi,LI Chong,CAI Mei,ZHU Jinyu. Present situation and suggestions of heavy metal thallium pollution control in sulfuric acid industrial wastewater [J]. Inorganic Chemicals Industry, 2022, 54(6): 6-12.
[6]	Shu Yirui,Zhang Pan,Wang Wei,Xiang Hengli,Ren Genkuan,Xu Dehua,Zhang Zhiye,Yang Xiushan. Titanium white by-product ferrous sulfate photofenton oxidation degradation of methyl orange in wastewater [J]. Inorganic Chemicals Industry, 2021, 53(3): 68-72.
[7]	Gao Zhijuan,Wang Xiangren. Research progress in alumina activation technology from pulverized-coal fly ash [J]. Inorganic Chemicals Industry, 2021, 53(2): 24-27.
[8]	Zhang Yulu,Wang Ye,Yang Lin,Yang Xiushan,Wang Xinlong. Preparation of high purity calcium oxide combined with sulfuric acid from fluorine gypsum decomposed by sulfur [J]. Inorganic Chemicals Industry, 2020, 52(7): 70-73.
[9]	Yin Haijiao,Xia Junjun,Quan Xiaoyu,Peng Tao,Tang Hao. Study on operation characteristics of mechanical flash cooling crystallization technology for titanium solution in summer [J]. Inorganic Chemicals Industry, 2020, 52(4): 93-95.
[10]	Liu Leilei,Xia Haijian,Feng Weiliang,Wang Tielin,Wang Cunwen,Wang Weiguo,Jiang Zhensheng. Determination and correlation of solubility of potassium fluosilicate in dilute sulfuric acid solution [J]. Inorganic Chemicals Industry, 2019, 51(8): 17-19.
[11]	Guo Ju. Study on preparation of battery-grade ferrous sulfate by purification of titanium white slag [J]. Inorganic Chemicals Industry, 2019, 51(8): 48-51.
[12]	Mao Qiqi,Liu Chuanxin,Dong Wenjuan,Zhang Ximan,Chen Hongyu,Wu Suwen. Preparation and characterization of spheniscidite [J]. Inorganic Chemicals Industry, 2019, 51(5): 53-56.
[13]	Liao Xin1，2，Yang Shaoli1，Ma Lan1，Li Hong1. Comparison and analysis of sulfuric acid process titanium dioxide prepared with titanium concentrate and titanium slag as raw materials respectively [J]. Inorganic Chemicals Industry, 2019, 51(10): 7-11.
[14]	JIANG Bing, XU Sheng, ZHANG Zhi-Ye, WANG Xin-Long, YANG Lin, YANG Xiu-Shan, KONG Xing-Jian. Research on effects of different atmospheres on reaction between pyrite and ferrous sulfate [J]. INORGANICCHEMICALSINDUSTRY, 2016, 48(8): 35-.
[15]	DU Jian-Qiao, XU Yu-Ting, ZHONG Ben-He. Technical analysis of green vitriol treatment in large-scale [J]. INORGANICCHEMICALSINDUSTRY, 2016, 48(5): 9-.

National Inorganic Salts Information Center

Inorganic Acid-Base-Salt Committee of CIESC

Study on sulfuric acid leaching kinetics of pyrolusite with ferrous sulfate as reducing agent

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Metrics

Comments

Recommended 0