CAJ | 학술논문

通过浮选实验、吸附量测定、Zeta电位测试、羟肟酸与Ca2+作用模型的建立以及红外光谱测试，研究羟肟酸对白钨矿的浮选作用机理。结果表明：当pH为8~10时，白钨矿具有很好的可浮性，且在pH=9时达到最大回收率，其中环已甲基羟肟酸(CHA)对白钨矿的捕收能力优于BHA的；在整个实验pH范围内(8~10)，CHA在白钨矿表面的吸附量均大于苯甲羟肟酸(BHA)的，CHA的加入使白钨矿表面动电位向负移动的程度要大于BHA的，且CHA与Ca2+的结合能更负，这均说明CHA更容易在白钨矿表面发生吸附，对白钨矿的捕收能力更强；BHA在白钨矿表面发生牢固的化学吸附，与钙离子作用生成了BHA钙盐。
통과부선실험、흡부량측정、Zeta전위측시、간우산여Ca2+작용모형적건립이급홍외광보측시，연구간우산대백오광적부선작용궤리。결과표명：당pH위8~10시，백오광구유흔호적가부성，차재pH=9시체도최대회수솔，기중배이갑기간우산(CHA)대백오광적포수능력우우BHA적；재정개실험pH범위내(8~10)，CHA재백오광표면적흡부량균대우분갑간우산(BHA)적，CHA적가입사백오광표면동전위향부이동적정도요대우BHA적，차CHA여Ca2+적결합능경부，저균설명CHA경용역재백오광표면발생흡부，대백오광적포수능력경강；BHA재백오광표면발생뢰고적화학흡부，여개리자작용생성료BHA개염。
The flotation mechanism with hydroxamic acid of scheelite were researched by floatation experiment, adsorption measurement, Zeta potentiodynamic measurement, modeling of hydroxamic acid and Ca2+potentiodynamic and infrared spectrum measurement. The flotation experiment of scheelite show that scheelite has good flotability when pH is 8?10 and has maximum recovery especialy when pH=9. CHA has stronger collecting ability than BHA. At the whole range of pH (8?10), the adsorption amount of CHA is more than that of BHA, the negative moving degree of scheelite surface added with CHA is more than BHA, binding energy between CHA and Ca2+ is more negative, which show that CHA is adsorbed easily on the scheelite surface and possesses stronger collecting ability. The chemical adsorption of BHA occurs firmly on the surface of scheelite, the BHA calcium generates after interacted with calcium ions.