某低品位锰矿石抛废试验研究
An Experimental Study on Waste Disposal of A Low-grade Manganese Ore
蒋权 1赵强 1张鹏羽 1杨卓1
作者信息
- 1. 中冶长天国际工程有限责任公司,湖南长沙 410205
- 折叠
摘要
针对某低品位锰矿石,进行了工艺矿物学和抛废试验研究,分别考察了跳汰机、智能视觉矿石分选机、智能射线矿石分选机、皮带永磁磁选干抛机、高梯度磁选干抛机等抛废设备对锰矿石抛废效果的影响.结果表明,该矿石中主要回收元素Mn含量为7.32％;含Mn矿物主要为软锰矿,分布率为61.99％.采用跳汰分选机、智能视觉分选机、高梯度磁选干抛机均无法对该矿石进行有效抛废;使用皮带永磁磁选机干抛可以抛除产率为63.32％,品位为5.81％的尾矿,此时皮带永磁磁选干抛机的磁场强度为1 T,入选粒度为-2.36 mm,出料口宽度为3 cm,皮带转速为5 cm/s;使用智能射线矿石分选机在最优抛废模型下可以直接获得Mn品位为17.47％、作业回收率为18.89％的高品位锰精矿.
Abstract
A study on mineralogy and pre-concentration experiments was conducted on a low-grade manganese ore to examine the impact of different pre-concentration equipment such as jigs,intelligent visual ore sorting machines,intelligent ray ore sorting machines,belt permanent magnetic separation pre-concentration machines and high gradient magnetic separation dry pre-concentration machines on the pre-concentration effect of manganese ore.The results show that the ore is a low-grade manganese ore and Mn content is 7.32％.Mn mineral is mainly pyrolusite with a distribution rate of 61.99％.We know that the use of jigging sorting machines,intelligent visual sorting machines and high gradient magnetic separation dry throwing machines cannot effectively pre-concentration the ore.The use of belt permanent magnetic separation pre-concentration machines can remove tailings with a yield of 63.32％and a grade of 5.81％.At this time,the magnetic field strength of belt permanent magnetic separation pre-concentration machines is 1 T,the selected particle size is-2.36 mm,the outlet width is 3 cm and the belt speed is 5 cm/s.High grade manganese concentrates with a Mn grade of 17.47％and an recovery of 18.89％can be directly obtained using a ray sorting machine.
关键词
锰矿/抛废/磁选/X射线Key words
Manganese ore/Abandoning/Magnetic spearation/X-ray引用本文复制引用
出版年
2024
NETL
NSTL
万方数据