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首页> 外文期刊>資源と素材: 资源·素材学会志 >Depressing Mechanism of Sphalerite in Hot Flotation and Behavior of Sphalerite Activated with Copper in the Subsequent Zinc Flotation
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Depressing Mechanism of Sphalerite in Hot Flotation and Behavior of Sphalerite Activated with Copper in the Subsequent Zinc Flotation

机译：随后锌浮选中铜活化热浮选热浮选的抑制机理及闪锌矿的行为

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The mechanism of sphalerite depression in hot flotation (Pb flotation) and the flotation behavior of sphalerite activated with copper in the subsequent Zn flotation have been investigated.In single mineral flotation at pH 6 using potassium diethyl dithiophosphate as a collector, the floatability of sphalerite did not depend on pulp temperature (25 and 60 deg C . In the flotation of sphalerite and pyrite mixture at 60 deg C, the flotation recovery of sphalerite was significantly decreased as the mixing ratio of pyrite increased, However it was only slightly decreased at 25 deg C.The reaction product on sphalerite surface after conditioning in the pyrite Suspension or ferrous sulfate solution at pH 6 and 60 deg C was identified as a basic iron sulfate by means of X-ray photoelectron spectroscopy and diffuse reflectance infrared fourier transform spectroscopy. Collector adsorption did not depend on the pulp temperature and the presence of pyrite.From the above results, it is concluded that sphalerite depression was caused by deposition of hydrophilic basic iron sulfate on the surface, which was formed by oxidation and hydrolysis reactions of ferrous ions dissolved from pyrite surface.After hot flotation, sphalerite was activated by copper ion and easily floated by using potassium amyl xanthate as a collector. Collector adsorption on the sphalerite after hot flotation was increased by copper activation, hut the collector adsorption samples with and without copper activation did not differ so much to explain the difference in the fluatability.Accordingly, the different floatability of copper-activated and unactivated sphalerite may be explained by the difference in collector adsorption mechanism, i. e. hydrophobization. Namely, in the case of copper-activated sphalerite, it is supposed that hydrophobicity of potassium amyl xanthate overcomes that of basic iron sulfate which has been deposited on the surface during after hot flotation, resulting in enhanced floatability.
机译：已经研究了在随后的Zn浮选中激活的热浮选（Pb浮选）和闪光石的浮选行为的机制，并在随后的Zn浮选中进行了活化的浮选行为。使用二甲基二磷酸钾作为收集器的PH 6在pH6的单一矿物浮选，斯巴尔氏菌的浮动性不依赖于纸浆温度（25和60℃。在60℃的闪锌矿和黄铁矿混合物中的浮选中，随着黄铁矿的混合比增加，Sphalerite的浮选回收率显着降低，但它在25℃下略微下降C.通过X射线光电子能谱鉴定在pH 6和60℃下的硫酸铁悬浮液或硫酸亚铁溶液中的硫酸铁矿表面上的反应产物通过X射线光电子能谱和漫射反射红外傅里叶变换光谱鉴定为碱性硫酸铁。收集器吸附不依赖于纸浆温度和硫铁矿的存在。从上述结果中，它被结束了T sphalerite凹陷是由沉积的表面上的亲水性碱性硫酸铁引起的，这通过溶解从黄铁矿表面溶解的铁离子的氧化和水解反应形成。热浮选后，通过铜离子激活闪锌矿，并通过使用戊基黄原酸盐容易地漂浮作为收藏家。通过铜活化升高热浮选后的集电器吸附，铜活化升高，收集器吸附样品与铜激活没有差异，无法解释流利性的差异。根据铜活化和未活化的斯巴尔氏植物的不同稳定性可能通过收集器吸附机制的差异来解释，i。 e。疏水化。即，在铜活化的闪锌矿的情况下，假设磷酸钾黄原酸钾的疏水性克服了在热浮选后沉积在表面上的碱性硫酸铁的碱性硫酸盐，从而提高了可浮动性。

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