硫化—胺法浮选菱锌矿体系中两相和三相泡沫的性能研究  

Two−phase and Three−phase Froth Performance in Sphalerite Flotation Using Sulphidizing−amination Method

作　　者：李超[1] 罗溪梅[1,2] 齐琳萍 宋振国 王云帆[2,4] LI Chao;LUO Ximei;QI Linping;SONG Zhenguo;WANG Yunfan(Kunming University of Science and Technology,College of Land and Resources Engineering,Kunming 650093,China;State Key Laboratory of Clean Utilization of Complex Non-ferrous Metal Resources,Kunming 650093,China;State Key Laboratory of Mineral Processing Science and Technology,Beijing 100160,China;Kunming University of Science and Technology,College of Metallurgical and Energy Engineering,Kunming 650093,China)

机构地区：[1]昆明理工大学国土资源工程学院,云南昆明650093 [2]昆明理工大学复杂有色金属资源清洁利用国家重点实验室,云南昆明650093 [3]矿物加工科学与技术国家重点实验室,北京100160 [4]昆明理工大学冶金与能源工程学院,云南昆明650093

出　　处：《矿产保护与利用》2024年第3期74-80,共7页Conservation and Utilization of Mineral Resources

基　　金：国家自然科学基金项目(52364029,52264030);矿物加工科学与技术国家重点实验室开放基金资助项目(BGRIMM-KJSKL-2023-10);云南省科技厅研究项目(202401AT070317,202201BE070001-048)

摘　　要：硫化—胺法是氧化锌的主要选别方法之一,在工业生产中的指标较好,但存在浮选泡沫发黏、难消泡的问题。研究了硫化-胺法浮选菱锌矿体系中两相泡沫和三相泡沫的性能,考察了硫化钠用量、十二胺用量、矿物含量、矿物粒度、矿物种类等对泡沫稳定性的影响,并测试了不同矿物含量的矿浆黏度。结果表明,在采用硫化—胺法浮选菱锌矿时,加入硫化钠能够提高两相和三相泡沫的稳定性。不同粒度的矿物颗粒对泡沫稳定性影响不同,加入-74+37μm粒级的菱锌矿和石英颗粒均能够降低泡沫稳定性,而加入-37μm粒级的菱锌矿和石英颗粒均能够提高泡沫稳定性,-18μm的石英颗粒影响尤为明显。当十二胺与微细粒级石英共同存在时,浮选泡沫尤为稳定。加入石英颗粒后的三相泡沫半衰期均高于菱锌矿,这是由于石英矿浆的黏度高于菱锌矿,因而泡沫液膜的Marangoni效应增强,导致排液速率变慢,泡沫液膜变薄速率下降,泡沫稳定性更强。The sulphidizing−amination method is one of the main beneficiation methods for sphalerite ore,which has good indexes in industrial production,but there is a problem that the flotation foam is sticky and difficult to defoam.The performance of two−phase and three−phase foams in sphalerite flotation using sulphidizing−amination method,and the effects of sodium sulfide dosage,dodecylamine dosage,mineral content,mineral particle size,mineral type,etc.on foam stability were studied.The pulp viscosity of different mineral contents was investigated at last.The results show that in the sulphidizing−amination flotation of sphalerite,sodium sulfide can improve the stability of two−phase and three−phase foam.Mineral particles of different sizes have different effects on foam stability.Adding sphalerite and quartz particles with a particle size of−74+37μm can reduce foam stability,while adding sphalerite and quartz particles with a particle size of−37μm can improve foam stability.The−18μm quartz particles have a particularly significant effect.When dodecylamine co−existed with micro−fine quartz,the flotation foam was particularly stable.The half−life of the three−phase foam after the addition of quartz particles is higher than that of sphalerite,because the viscosity of quartz pulp is higher than that of sphalerite,so the Marangoni effect of the foam film is enhanced,resulting in a slower drainage rate,a slower thinning rate of the foam film,and stronger foam stability.

关 键 词：硫化—胺浮选法 十二胺 菱锌矿 硫化钠 石英 泡沫半衰期 

分 类 号：TD952.3[矿业工程—选矿]