红柱石与石英之间浮选交互影响研究

Study on the Interaction of Flotation between Andalusite and Quartz

红柱石与石英之间浮选交互影响研究发现:在pH值为8、FeCl3·6H2O用量20 mg/L、油酸钠用量150 mg/L时,红柱石与石英颗粒间界面力的相互作用距离越小,总E-DLVO势能的负值越大,说明各粒级石英与不同粒级红柱石的作用力为吸引力,相互之间存在粘附罩盖。通过显微镜观察进一步验证了红柱石与石英之间确实发生了粘附现象。红柱石与石英浮选交互影响的主要作用形式为矿物间的相互粘附罩盖,包括细粒级石英可以向粗粒级红柱石粘附,表现为矿泥罩盖;细粒级红柱石可以向粗粒级石英粘附;细粒级红柱石可以与细粒级石英粘附聚集。在油酸钠体系中,可以利用柠檬酸来有效削弱石英与红柱石之间的粘附罩盖作用,柠檬酸对红柱石与石英的分离效果比较好的作用集中在-106+45μm和-45+18μm粒级。

The study of flotation interaction between andalusite and quartz found that when the pH value is 8 and the dosage of FeCl3·6H2O is 20 mg/L and the dosage of sodium oleate is 150 mg/L,with the interaction distance between the andalusite and quartz particles is smaller,the negative value of the total E-DLVO potential energy is larger,indicating that the force of each grade of quartz and different grades of andalusite is attractive,and there is an adhesive cover between each other.Microscopic observations further verified that adhesion between andalusite and quartz did occur.The main effect form of the interactive effect of andalusite and quartz flotation is the mutual adhesion cover between minerals,including fine-grained quartz,it can adhere to coarse-grained andalusite,which is represented by the slime cover,fine-grained andalusite can adhere to coarse-grained quartz,fine-grained andalusite can adhere to and aggregate with fine-grained quartz.In the sodium oleate system,citric acid can be used to effectively weaken the adhesion and cover between quartz and andalusite.The better effect of citric acid on the separation of andalusite and quartz is concentrated at-106+45μm and-45+18μm.