The depression of pyrite in marmatite flotation by sodium glycerine-xanthate （SGX） was investigated through microflotation, zeta potential and adsorption measurements. The flotation tests of mineral show that in the...The depression of pyrite in marmatite flotation by sodium glycerine-xanthate （SGX） was investigated through microflotation, zeta potential and adsorption measurements. The flotation tests of mineral show that in the presence of SGX, marmatite can be activated by Cu^2＋ and shows good flotability, while pyrite cannot be activated and therefore shows poor flotability. At the pH value range from 4 to 11, the flotation selectivity between marmatite and pyrite is obvious when the SGX concentration is below 50 mg/L. The depression mechanism of SGX on sulfide minerals is discussed based on zeta potential and adsorption isotherm. Zeta potential measurement demonstrates that in the presence of Cu^2＋, SGX can strongly adsorb on the surface of pyrite, while it cannot adsorb on the surface of marmatite. The results of adsorption isotherms show that the adsorption density of SGX on pyrite is greater.展开更多
对蒙自产出的含铟氧化锌进行了铟的浸出动力学研究,考察了酸度、温度、物料粒度、搅拌强度等因素对铟浸出的影响。高酸条件下铟浸出过程受内扩散控制,反应级数为1.194,同时测得其反应活化能为10.97 k J/mol;反应速度常数k与物料粒径的...对蒙自产出的含铟氧化锌进行了铟的浸出动力学研究,考察了酸度、温度、物料粒度、搅拌强度等因素对铟浸出的影响。高酸条件下铟浸出过程受内扩散控制,反应级数为1.194,同时测得其反应活化能为10.97 k J/mol;反应速度常数k与物料粒径的平方成反比。试验结果表明:高酸条件下浸出含铟氧化锌才能获得较高的铟浸出速度,通过提高温度、降低物料粒度等方式可以强化铟的浸出。展开更多
基金Project (50774094) supported by the National Natural Science Foundation of China
文摘The depression of pyrite in marmatite flotation by sodium glycerine-xanthate （SGX） was investigated through microflotation, zeta potential and adsorption measurements. The flotation tests of mineral show that in the presence of SGX, marmatite can be activated by Cu^2＋ and shows good flotability, while pyrite cannot be activated and therefore shows poor flotability. At the pH value range from 4 to 11, the flotation selectivity between marmatite and pyrite is obvious when the SGX concentration is below 50 mg/L. The depression mechanism of SGX on sulfide minerals is discussed based on zeta potential and adsorption isotherm. Zeta potential measurement demonstrates that in the presence of Cu^2＋, SGX can strongly adsorb on the surface of pyrite, while it cannot adsorb on the surface of marmatite. The results of adsorption isotherms show that the adsorption density of SGX on pyrite is greater.
文摘对蒙自产出的含铟氧化锌进行了铟的浸出动力学研究,考察了酸度、温度、物料粒度、搅拌强度等因素对铟浸出的影响。高酸条件下铟浸出过程受内扩散控制,反应级数为1.194,同时测得其反应活化能为10.97 k J/mol;反应速度常数k与物料粒径的平方成反比。试验结果表明:高酸条件下浸出含铟氧化锌才能获得较高的铟浸出速度,通过提高温度、降低物料粒度等方式可以强化铟的浸出。
