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Effect of Heat Treatment on Crystalline Form Evolution of Calcium Arsenate and Arsenic Leaching
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Zhonglin LI1, 2, Biao PENG1, 2, Ye XU1, 2, Wenbin LUO1, 2, Lusen WANG1, 2, Shengjie WANG3, Yibing LI1, 2
Mining and Metallurgical Engineering | 2025, 45(3) : 168 - 172
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Mining and Metallurgical Engineering | 2025, 45(3): 168-172
• METALLURGY •
Effect of Heat Treatment on Crystalline Form Evolution of Calcium Arsenate and Arsenic Leaching
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Zhonglin LI1, 2, Biao PENG1, 2, Ye XU1, 2, Wenbin LUO1, 2, Lusen WANG1, 2, Shengjie WANG3, Yibing LI1, 2
Affiliations
  • 1.School of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, Guangxi, China
  • 2.Key Laboratory of New Processing Technology for Nonferrous Metals & Materials, Ministry of Education, Guilin University of Technology, Guilin 541004, Guangxi, China
  • 3.Guangxi Key Laboratory of High Value Utilization of Manganese Resources, Guilin 541004, Guangxi, China
Published: 2025-06-01 doi: 10.3969/j.issn.0253-6099.2025.03.028
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Effects of roasting temperature and heating rate on the crystalline form evolution of calcium arsenate during heat treatment were investigated. The heat-treated calcium arsenate was leached by strong acids (sulfuric acid, nitric acid, hydrochloric acid, aqua regia), and the relationship between the crystalline form of calcium arsenate and arsenic concentration in leaching solution was investigated. The results show that calcium arsenate undergoes significant crystalline form transition during roasting process, and higher roasting temperature can result in higher degree of crystallization. The heat-treated calcium arsenate is leached with acids and it is shown that less arsenic is leached out as the roasting temperature rises. After calcium arsenate is subjected to roasting at 500 ℃, the concentration of arsenic in the leaching solution can meet GB 5085.3—2007. After calcium arsenate is subjected to a roasting process at 900 ℃ and above, the concentration of arsenic in the leaching solution satisfied GB 3838—2002.

calcium arsenate  /  heat treatment  /  crystal form transition  /  arsenic leaching  /  roasting  /  arsenic fixation
Zhonglin LI, Biao PENG, Ye XU, Wenbin LUO, Lusen WANG, Shengjie WANG, Yibing LI. Effect of Heat Treatment on Crystalline Form Evolution of Calcium Arsenate and Arsenic Leaching[J]. Mining and Metallurgical Engineering, 2025 , 45 (3) : 168 -172 . DOI: 10.3969/j.issn.0253-6099.2025.03.028
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doi: 10.3969/j.issn.0253-6099.2025.03.028
  • Receive Date：2024-12-08
  • Online Date：2026-03-19
  • Published：2025-06-01
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  • Received：2024-12-08
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Affiliations
    1.School of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, Guangxi, China
    2.Key Laboratory of New Processing Technology for Nonferrous Metals & Materials, Ministry of Education, Guilin University of Technology, Guilin 541004, Guangxi, China
    3.Guangxi Key Laboratory of High Value Utilization of Manganese Resources, Guilin 541004, Guangxi, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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