微细粒磁铁矿毕业设计.doc

摘要
我国铁矿石资源禀赋较差,丰而不富。尽管探明储量有463亿吨,但已被利用和可供选择利用储量只有256亿吨,且多为贫矿,%,比世界平均品位低11个百分点,均需经过选矿富集才能达到炼铁生产对品位的要求。
本文研究对象为青海省乌兰县微细粒磁铁矿,该矿石嵌布粒度细、品位低(%),属于极难选矿石。经过对该矿石系统的工艺矿物学研究,确定了主要采用选矿试验方法为弱磁选—阳离子反浮选和弱磁选—阴离子反浮选,并研究探讨了浮选机理。
通过对该矿石的破碎、细磨、选别实验研究,%,虽然精矿还远远达不到工业要求,由于该矿石性质的复杂性以及实验条件的有限性,该实验结果基本令人满意。
关键词: 磁铁矿微细粒低品位阳离子反浮选捕收剂阴离子反浮选机理

Abstract
China iron ore resources endowment is poorer,and abundant but not a 463 million tons of proven reserves, but has been using and available use only 256 million tons, and reserves of more than average grade for only % lean, than the world's average grade low 11 percent, will be required after dressing enrichment can achieve the requirement of grade production of iron.
This paper research object for Qinghai Wulan county microgranular ite, this mineral fine disseminated extent, grade low (only %), belong to extremely difficult to choose ore. After the process of this ore system, determined the mineralogical study mainly by dressing experiment method for weak ic separation-- reverse cationic flotation research and Intensity ic separation-- anionic reverse flotation. And explores the flotation mechanism
Through the breakage of the ore and fine grinding, choose don't experiment research, run-of-mine ore grade ascending to fulfill, although concentrate still far less than industrial demand, because plexity of the ore properties and the limitation of experimental condition, the experimental results basic satisfactory.
Keywords: ite microgranular low grade cationic reverse flotation collector Anionic reverse flotation mechanism
目录
摘要 I
Abstract II
第一章绪论 3
引言 3
我国铁矿资源概况 3
3
3
3
铁矿选矿的意义 3
铁矿石的分选技术现状 3
正浮选工艺 3
反浮选工艺 3
低品位微细粒铁矿资源利用的发展方向 3
课题研究的内容及目标 3
第二章原矿工艺矿物学研究 3
3
3
3
铁矿石化学分析 3
X-荧光光谱分析 3
全铁含量的测定 3
第三章实验所用设备仪器及原料的制备 3
实验矿样 3
浮选药剂