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Heavy Metal Leaching Experiments with Mining Rocks in Xinqiao Pyrite Mine

Author: ZhuRong
Tutor: XuXiaoChun
School: Hefei University of Technology
Course: Environmental Science
Keywords: Heavy metal Leaching experiments Mining waste rock Pyrite Particle size Microorganism
CLC: X753
Type: Master's thesis
Year: 2007
Downloads: 212
Quote: 0
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Abstract


Tongling Xinqiao pyrite mining waste rock leaching experiments , the acid-producing potential of different size waste the stone samples as well as sterilization sample leachate pH values ??change the SO 4 < / sub > < sup> 2 - concentration and Fe, Cu, Pb, Zn, Cd 5 kinds of heavy metals dissolution law . The results show that , close to the pH of the natural water leaching water leaching process mining waste rock will appear in the latter part of the phenomenon of acid production . Also found that the waste rock in the S may not have fully involved in oxidative acidification process may affect the oxidation of the S factor in particle size because of the shape, structure , and waste rock . The study found that the The leachate pH changes and leachate SO 4 2 - concentration change in the overall trend is consistent . In addition , the study of the five kinds of heavy metals in the leaching process leaching of over time changes , and by the impact of the waste rock particle size , pH, and other factors , and the relationship between the elements , between elements each affect the dissolution amount . The work of the leaching experiment Xinqiao pyrite mining waste rock samples sterilized and non-sterilized samples at the same time , and both the results of a comparative study , the results show that the microbial changes in the pH of the sample leachate the law of leaching of heavy metals are present .

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CLC: > Environmental science, safety science > Processing and comprehensive utilization of waste > Mining, metallurgical industry,waste disposal and comprehensive utilization > Metal ores
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