Research on kinetics of leaching of arsenic from dust containing high arsenic

被引：0

作者：

Liao, Yalong ^{[1
]}

Peng, Zhiqiang ^{[1
]}

Zhou, Juan ^{[1
]}

Huang, Feirong ^{[1
]}

机构：

[1] Faculty of Metallurgical and Energy Eng., Kunming Univ. of Sci. and Technol., Kunming

来源：

Sichuan Daxue Xuebao (Gongcheng Kexue Ban)/Journal of Sichuan University (Engineering Science Edition) | 2015年 / 47卷 / 03期

关键词：

Hazards solid waste; High arsenic dust; Kinetics; Leaching;

D O I：

10.15961/j.jsuese.2015.03.029

中图分类号：

学科分类号：

摘要：

The objective of this article was exploring the leaching kinetics of arsenic contained in high arsenic dust. High arsenic dust from lead smelter was processed by leaching with water. The effects of pH, liquid-solid ratio, reaction time and temperature on the rate of arsenic leaching were studied, and SEM, XRD and EDS were employed to character the structure of raw material and leach residue for investigating the kinetics of arsenic leached from dust. It was demonstrated that the liquid-solid ratio and leaching temperature has the greatest influence on the leaching rate, and that the leaching kinetics of arsenic is correspondent with the Johnson-Mehl-Avrami (JMA) model. The diffusion is the bottle-neck limiting leaching rate of arsenic within the selected temperature range, and the kinetic equation is -ln(1-α)= 9.4×106 exp[-50 380/(RT)] t0.3106 with the leaching process frequency factor of 9.4×106 and the apparent activation energy of 50.38 kJ/mol. ©, 2015, Editorial Department of Journal of Sichuan University. All right reserved.

引用

页码：200 / 206

页数：6

共 26 条

[1]

Peng Y., Zheng Y., Chen W., Purification effect and oxidation kinetics of As(III)in copper electrolysis, The Chinese Journal of Nonferrous Metals, 22, 6, pp. 1798-1803, (2012)

[2]

Zheng Y., Zhou W., Peng Y., Et al., Effect of valences of arsenic, antimony on removal rates of arsenic, antimony and bismuth in copper electrolyte, Journal of Central South University: Science and Technology, 43, 3, pp. 821-826, (2012)

[3]

Wang Y., Liu Z., Ma X., Et al., Enriching gold by iron-making from roasting cinder of sulfur concentrate containing gold and arsenic, Journal of Central South University: Science and Technology, 44, 1, pp. 8-13, (2013)

[4]

Li Q., Yang Y., Jiang T., Et al., Electrochemical oxidation of arsenopyrite in acidic media, The Chinese Journal of Nonferrous Metals, 16, 11, pp. 1971-1975, (2006)

[5]

Li Y., Liu Z., Zhao Z., Et al., Determination of arsenic speciation in secondary zinc oxide and arsenic leach ability, Transactions of Nonferrous Metals Society of China, 22, pp. 1209-1216, (2012)

[6]

Li Y., Liu Z., Li Q., Et al., Removal of arsenic from arsenate complex contained in secondary zinc oxide, Hydrometallurgy, 109, pp. 237-244, (2011)

[7]

Yuan H., Zhu Y., Zhang J., Process of high-arsenic dust containing tin volatilization from DC submerged arc furnace, Journal of Central South University: Science and Technology, 44, 6, pp. 2200-2206, (2013)

[8]

Xu Z., Nie H., Li Q., Et al., Pressure leaching technique of smelter dust with high copper and high arsenic, The Chinese Journal of Nonferrous Metals, 18, 1, pp. s59-s63, (2008)

[9]

Xu Z., Li Q., Nie H., Pressure leaching technique of smelter dust with high-copper and high-arsenic, Transactions of Nonferrous Metals Society of China, 20, pp. s176-s181, (2010)

[10]

Yang W., Qin W., Liu R., Et al., Extraction of Au from high arsenic refractory gold concentrate by bacterial oxidation cyanidation, The Chinese Journal of Nonferrous Metals, 21, 5, pp. 1151-1158, (2011)

← 1 2 3 →