This study presents the use of Cinnamic Hydroxamic Acid (CHA) as a novel collector of malachite. The flotation performance was evaluated by microflotation experiments. The mechanism of CHA adsorption at malachite surfaces was studied by contact angle measurements, zeta potential measurements, infrared spectroscopy (FTIR), and X-ray Photoelectron Spectroscopy (XPS). The microflotation experiments demonstrated that the CHA improved selectivity in comparison to benzohydroxamic acid (BA) during malachite flotation. Artificial mixed mineral flotation experiments verified that malachite could be separated from calcite effectively with the CHA collector. The results from contact angle measurements indicated that the hydrophobicity of the malachite surface was increased after CHA treatment. Zeta potential and infrared spectroscopy measurements implied that the adsorption of CHA at malachite. XPS analysis demonstrated that the C and N concentration on the malachite surface increased, with a concomitant decrease in Cu concentration.

这项研究介绍了肉桂酸羟肟酸（CHA）作为孔雀石的新型捕收剂的用途。通过微浮选实验评估浮选性能。通过接触角测量，ζ电势测量，红外光谱（FTIR）和X射线光电子能谱（XPS）研究了CHA在孔雀石表面的吸附机理。微浮选实验表明，与孔雀石浮选过程中的苯并异羟肟酸（BA）相比，CHA提高了选择性。人工混合矿物浮选实验证明，使用CHA捕收剂可以有效地将孔雀石与方解石分离。接触角测量的结果表明，CHA处理后孔雀石表面的疏水性增加。Zeta电位和红外光谱测量结果表明，CHA在孔雀石上的吸附。XPS分析表明，孔雀石表面的C和N浓度增加，同时Cu浓度降低。