Synergistic Mechanism of Combined Inhibitors on the Selective Flotation of Arsenopyrite and Pyrite

被引：4

作者：

Sun, Xiaohao ^{[1
,2
]}

Wu, Bozeng ^{[1
,2
]}

Deng, Jiushuai ^{[1
,3
,4
]}

Qiu, Hongxin ^{[1
,2
]}

Hu, Mingzhen ^{[1
,2
]}

Cai, Jiaozhong ^{[1
]}

Jin, Xiaoli ^{[1
]}

Xu, Hongyang ^{[1
]}

机构：

[1] China Univ Min & Technol Beijing, Sch Chem & Environm Engn, Beijing 100083, Peoples R China

[2] Natl Engn Lab Efficient Utilizat Indium & Tin Res, Liuzhou 545000, Peoples R China

[3] CUMTB, Engn Technol Res Ctr Comprehens Utilizat Rare Ear, Beijing 100083, Peoples R China

[4] CUMTB, Key Lab Separat & Proc Symbiot Associated Mineral, Beijing 100083, Peoples R China

来源：

ACS OMEGA | 2022年 / 7卷 / 07期

基金：

中国国家自然科学基金;

关键词：

MOLECULAR DESIGN; SEPARATION;

D O I：

10.1021/acsomega.1c06902

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The selective action mechanism of sodium butyl xanthate (BX), ammonium salt (NH4+), and sodium m-nitro benzoate (m-NBO) on pyrite and arsenopyrite was examined by experiments and quantum chemistry. The experiments show that under alkaline conditions, ammonium salt (NH4+) and m-NBO can have a strong inhibitory effect on arsenopyrite. At pH 11, the recovery rate of arsenopyrite reduces to 16%. The presence of ammonium salt (NH4+) and m-NBO reduces the adsorption energy of BX on arsenopyrite to Delta E = -23.23 kJ/mol, which is far less than the adsorption energy on the surface of pyrite, Delta E = -110.13 kJ/mol. The results are helpful to understand the synergistic mechanism of the agent on the surface of arsenopyrite and pyrite, thus providing a reference for the selective separation of arsenopyrite.

引用

页码：6302 / 6312

页数：11

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