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Synthesis of 4-(Chloromethyl) Benzohydroxamic Acid and Its Flotation Performance for Wolframite
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Lei HAN1, 2, 3, Yunbo LUO1, 2, 3, 4, Ruipeng CHEN1, 2, 3, Faming ZHANG1, 2, 3, Zhenxuan XIE1
Mining and Metallurgical Engineering | 2026, 46(4) : 145 - 149
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Mining and Metallurgical Engineering | 2026, 46(4): 145-149
• MINERAL PROCESSING •
Synthesis of 4-(Chloromethyl) Benzohydroxamic Acid and Its Flotation Performance for Wolframite
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Lei HAN1, 2, 3, Yunbo LUO1, 2, 3, 4, Ruipeng CHEN1, 2, 3, Faming ZHANG1, 2, 3, Zhenxuan XIE1
Affiliations
  • 1.Guangzhou Yueyouyan Mineral Resources Technology Co., Ltd., Guangzhou 510650, Guangdong, China
  • 2.Guangdong Institute of Resources Utilization and Rare Earth Development, Guangdong Academy of Sciences, Guangzhou 510650, Guangdong, China
  • 3.State Key Laboratory of Rare Metals Separation and Comprehensive Utilization, Guangzhou 510650, Guangdong, China
  • 4.School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, Henan, China
doi: 10.3969/j.issn.0253-6099.2026.04.022
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Conventional hydroxamic acid collectors suffer from weak collecting capacity and high dosage consumption. To address these drawbacks, 4-(chloromethyl) benzohydroxamic acid was synthesized, and its flotation performance for wolframite was systematically investigated. With methyl 4-(chloromethyl) benzoate, hydroxylamine hydrochloride and sodium hydroxide as raw materials, the optimal synthesis conditions were determined as follows:methyl 4-(chloromethyl) benzoate, hydroxylamine hydrochloride and sodium hydroxide in a molar ratio of 1∶1.2∶2.35, reaction temperature of 35 ℃, reaction time of 4 h, and pH of 5 at the terminal acidification. Tests on flotation of wolframite indicate that 4-(chloromethyl) benzohydroxamic acid outperforms benzohydroxamic acid in collecting ability. To achieve equivalent flotation indices, the required dosage of the synthesized reagent is lower than that of benzohydroxamic acid.

4-(chloromethyl) benzohydroxamic acid  /  synthesis  /  wolframite  /  tungsten  /  flotation  /  collector
韩雷, 罗云波, 陈锐鹏, 张发明, 谢臻璇. 对氯甲基苯甲羟肟酸的合成及其对黑钨矿的浮选性能. 矿冶工程杂志, 2026 , 46 (4) : 145 -149 . DOI: 10.3969/j.issn.0253-6099.2026.04.022
Lei HAN, Yunbo LUO, Ruipeng CHEN, Faming ZHANG, Zhenxuan XIE. Synthesis of 4-(Chloromethyl) Benzohydroxamic Acid and Its Flotation Performance for Wolframite[J]. Mining and Metallurgical Engineering, 2026 , 46 (4) : 145 -149 . DOI: 10.3969/j.issn.0253-6099.2026.04.022
Appendix
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Year 2026 volume 46 Issue 4
102
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Article Info
doi: 10.3969/j.issn.0253-6099.2026.04.022
  • Receive Date：2026-02-15
  • Online Date：2026-10-08
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  • Received：2026-02-15
Affiliations
    1.Guangzhou Yueyouyan Mineral Resources Technology Co., Ltd., Guangzhou 510650, Guangdong, China
    2.Guangdong Institute of Resources Utilization and Rare Earth Development, Guangdong Academy of Sciences, Guangzhou 510650, Guangdong, China
    3.State Key Laboratory of Rare Metals Separation and Comprehensive Utilization, Guangzhou 510650, Guangdong, China
    4.School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, Henan, China
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https://castjournals.cast.org.cn/joweb/kygczz/EN/10.3969/j.issn.0253-6099.2026.04.022
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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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