沉降-流态化复合分级机对钼尾矿分级研究.pdf

第26卷第1期
中国矿业
Vol 26, No
2017年1月
CHINA MINING MAGAZINE
2017
沉降一流态化复合分级机对钼尾矿分级研究
邓锋·2,王进松3
州工程应用技术学院化学工程学院,贵州毕节551700,2.费州省姝基新材料工程中心,
贵州毕节551700;3.江苏省徐州市铜山区国土资源局,江苏徐州221100)
摘要:选矿生产中常用的螺旋分级机、水力旋流器和细筛等分级设备存在不易操作、难维修、运行
成本高等缺陷。新开发的沉降-涴态化复合分级机结合了沉降分级和流化床分级设备的基本结构和分级
原理。以某选矿厂钼尾矿为原料,对其进行了粒度、组成和水力沉降分析,考察上升顶水量、给料速度和矿
浆浓度对分级的影响。结果表明,最佳上升顶水量几乎不随矿浆给料速度和浓度而变化,取值稳定在
120mL/s左右。分级机在矿浆浓度为30%的较低浓度和给料速度为20mL/s的中等给料速度运行时可
取得61.52%的最佳综合分级效率。
关键词:沉降-流态化复合分级机;沉降分级;流化床分级;钼矿
中图分类号:TD94文献标识码:A文章编号:1004-4051(2017)01-0092-06
Experimental study on compound sedimentation-fluidized
hydraulic classifying of molybdenum tailings
DENG Feng.2, WANG Jinsong
(1. Chemical Engineering Institute, Guizhou University of Engineering, Bijie 551700, China; 2. Guizhou Engineering
Centre of Coal-based New Materials, Biie 551700, China; 3. Land Resources Bureau of
Tongshan District, Xuzhou 21110, China)
Abstract: Spiral classifier, hydrocyclone and fine screen are commonly used classification equipments in
the mineral processing. But they have some defects, such as difficult to handle and repair, high operating
costs, etc. The compound sedimentation-fluidized hydraulic classifier is a newly developed classification
equipment, which combines the basic structures and principles of sedimentation classifier and fluidized bed
classifier. A molybdenum tailings sample from one concentrator was chose as raw material. Particle size
composition, metal elements and hydraulic analysis of this sample were tested. The effects of rising water
quantity, feeding velocity and slurry concentration on the classification efficiency were studied. The results
show that the optimum rising water quantity had little change with feeding velocity and slurry
concentration. It's a stable value at about 120ml/s. The classifier achieves an optimum synthesis classification
efficiency of 61.52% at a lower feed concentration of 30% and a medium feed rate of 200 mi
Keywords compound sedimentation-fluidized hydraulic classifier; sedimentation classification
fluidized bed classification; molybdenum ore
我国矿产资源大多“贫、细、杂、难”,须通过选矿提高矿石中有用组分含量,使其成为合格的工业原
料。分级是将含有不同粒度的物料在水或空气中
收稿日期:2016-1020
按沉降速度分成若干粒度级别的过程,是物料按粒
基金项目:贵州省科学技术基金项目资助(编号:黔科合丁字1KB度分离的一种形式2,已成为重要的选矿准备作业,
[2013106号);贵州工程应用技术学院教学研究与改革课题资助(编直接关系到选矿厂的成本控制和分选效果。一方
号:JG2015017)
面,如果分级系统不能将合格颗粒排出进入下一工
第一作者简介:邓锋(1986-),男,讲师,硕士,中国矿业大学洁净能源
技术与工程专业毕业,从事矿物分离技术研究,Emal: dfengkd(@126.cm。
序,将会造成再磨,影响磨杌的处理能力,加大能耗
通倍作者简介:王进松(198-),男,硬土,中国矿业大学矿物加エエ和钢耗。另一方面,也更重要的是,没有好的分级系
程专业,从事矿物加工工艺与设备研究, 3-mail:903973019 gg. com
统,就不能为后续的选别作业提供解离度或细度合