Study on Procedure Toxicity and Harmless Disposal of Manganese Mine Tailing Slag

Abstract:

Manganese mine slag was the salvage in the course of manganese producing. Many matters shall be extracted by rain eluviation and then turn into the water and soil to pollute environment. The water content and extraction procedure toxicity of the manganese waste residue were studied. Combining solidification additive was used to process the manganese waste residue for the harmless disposal. The results showed that the contents of Manganese、Zinc、Chromium and Cadmium in the manganese waste slag exceeded the maximum of the Chinese Identification standard for hazardous wastes. The extraction procedure toxicity was effectively decreased by the harmless disposal when the proportion of cement and manganese in the whole mine slag was 60%, and the content of heavy metals in the leaching solution were under the standard. Hence, the method of cement solidification could control the pollution to the environment effectively.

• Periodical: Advanced Materials Research (Volume 414)
• Pages: 312-316
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.414.312
• Online since: December 2011
• Authors: Wen Zhang Huang, Ning Lu
• Keywords: Extraction Procedure Toxicity, Harmless Disposal, Ratio of Liquid to Solid, Simulated Acid Rain, Solidification Additive

References

[1] Shen Hua. Pollution of Mn-dregs and Measurement in Xiangxi Region. China's Manganese Industry. 25(2) (2007) 46-49.

[2] Cai Guping, Ge Xiaoxia, Zeng Guangming. Investigation and evaluation of the pollution of manganese sulphate factories in Huangxing Town. Environmental Monitoring In China. 19(4) (2003) 56-59.

[3] Ouyang Yuzhu, Peng Xiaowei, Cao Jianbing, Li Zhiping, Deng Xiaodong. Ultrasonic Leaching of Electrolytic Manganese Residue with Additive. Environmental Protection of Chemical Industry. 27(3) (2007) 257-259.

[4] Zhou Zhiming, Su Wenzheng, Li Kun. The process investigation of preparing anhydrous MnCl2 from manganese-rich slag. Inorganic Chemicals Industry. 39(3) (2007) 50-52.

[5] Li Tanping, Xie Hualin, He Xiaomei, ZHOU Xuezhong. Experimental Study of Calcined Electrolysis Manganese Residue and Fly Ash Complex Admixture. Bulletin of the Chinese Ceramic Society. 26(3) (2007) 568-571.

[6] Zhang Yulin, Wang Yunzheng, Gao Deyun. An Application in the Way of Cold-Pressing Balls to Manage Mn-ore Powder. China's Manganese Industry. 25(1) (2007) 42-44.