组合抑制剂柠檬酸钠和焦磷酸钠在某铅锌矿分离浮选中的作用
发布时间：2018-08-24 18:56
【摘要】：在对某复杂多金属矿进行矿石性质研究的基础上,对其进行浮选分离.结果表明,矿石中矿物种类繁多,嵌布关系复杂,可综合回收的元素为铅、锌,主要以方铅矿、闪锌矿形式存在.铅矿物嵌布粒度细,氧化率高,与锌矿物共生关系密切,分离困难.采用铅锌依次优先工艺流程,阶段磨矿阶段选别,石灰为矿浆p H值调整剂,D421为铅矿物捕收剂,组合药剂焦磷酸钠和柠檬酸钠为闪锌矿和硫矿物抑制剂,经1次粗选、3次精选和1次扫选获得铅精矿;硫酸铜为闪锌矿活化剂,丁基黄药为锌矿物捕收剂,经1次粗选、2次精选和1次扫选获得锌精矿.闭路实验所得铅精矿铅品位为60.34%,铅回收率达81.31%,含锌6.74%;锌精矿锌品位为47.86%,锌回收率达93.11%,含铅0.62%.组合抑制剂焦磷酸钠和柠檬酸钠对闪锌矿具有选择性协同抑制作用,二者质量比为1:1时抑制效果最佳.
[Abstract]:Based on the study of ore properties of a complex polymetallic ore, flotation separation is carried out. The results show that there are many kinds of minerals in the ore, and the distribution relationship is complex. The elements that can be recovered synthetically are lead and zinc, which mainly exist in the form of galena and sphalerite. Lead minerals with fine particle size and high oxidation rate are closely related to zinc minerals and difficult to separate. The lead-zinc process was adopted in order, the stage grinding stage was selected, lime was used as the pH value regulator of slurry and D421 was used as lead mineral collector, and sodium pyrophosphate and sodium citrate were used as sphalerite and sulfur mineral inhibitors. Lead concentrate was obtained by one rough cleaning and one cleaning, copper sulfate was used as sphalerite activator, Ding Ji xanthate was zinc mineral collector, and zinc concentrate was obtained by two cleaning and one sweep separation. The lead grade of lead concentrate is 60.34, the recovery rate of lead is 81.31, the zinc content is 6.74, the zinc grade of zinc concentrate is 47.86, the recovery rate of zinc is 93.11 and the lead content is 0.62. The combination of sodium pyrophosphate and sodium citrate has selective synergistic inhibition on sphalerite, and the best inhibition effect is at 1:1 of the mass ratio of sodium pyrophosphate and sodium citrate.
【作者单位】： 昆明理工大学国土资源工程学院复杂有色金属资源清洁利用国家重点实验室;
【基金】：国家自然科学基金资助项目(编号:51264019) 国家重点基础研究发展计划(973)基金资助项目(编号:2014CB643404)
【分类号】：TD952
，
本文编号：2201727
[Abstract]:Based on the study of ore properties of a complex polymetallic ore, flotation separation is carried out. The results show that there are many kinds of minerals in the ore, and the distribution relationship is complex. The elements that can be recovered synthetically are lead and zinc, which mainly exist in the form of galena and sphalerite. Lead minerals with fine particle size and high oxidation rate are closely related to zinc minerals and difficult to separate. The lead-zinc process was adopted in order, the stage grinding stage was selected, lime was used as the pH value regulator of slurry and D421 was used as lead mineral collector, and sodium pyrophosphate and sodium citrate were used as sphalerite and sulfur mineral inhibitors. Lead concentrate was obtained by one rough cleaning and one cleaning, copper sulfate was used as sphalerite activator, Ding Ji xanthate was zinc mineral collector, and zinc concentrate was obtained by two cleaning and one sweep separation. The lead grade of lead concentrate is 60.34, the recovery rate of lead is 81.31, the zinc content is 6.74, the zinc grade of zinc concentrate is 47.86, the recovery rate of zinc is 93.11 and the lead content is 0.62. The combination of sodium pyrophosphate and sodium citrate has selective synergistic inhibition on sphalerite, and the best inhibition effect is at 1:1 of the mass ratio of sodium pyrophosphate and sodium citrate.
【作者单位】： 昆明理工大学国土资源工程学院复杂有色金属资源清洁利用国家重点实验室;
【基金】：国家自然科学基金资助项目(编号:51264019) 国家重点基础研究发展计划(973)基金资助项目(编号:2014CB643404)
【分类号】：TD952
，
本文编号：2201727
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