摘要
堆浸过程中,矿石表面容易发生结垢,从而导致浸堆渗透性降低,最终影响浸出率。以云南某高泥高碱铜矿石酸法堆浸工艺为背景,通过对堆浸结垢矿石进行电镜扫描和X射线衍射分析,发现结垢物以CaSO4为主,其产生的原因是浸出过程源源不断地生成Ca2+并引入SO24+;通过添加不同防垢剂进行试验,借助电镜扫描分析,验证了防垢剂对于矿石结垢有明显抑制作用,防垢剂作用机理主要是螯合增溶和晶体畸变作用。
During the process of heap leaching,incrustation is easy to precipitate on the surface of ore,which leads to decrease of the permeability of leaching yard and finally affects the leaching rate.Taking the acid heap leaching technique of a high-slurry high-alkali ore in Yunnan as background,the SEM scanning and X-ray diffraction analysis on the leaching ores of incrustation showed that the composition of incrustation was mainly CaSO4,that is because Ca2＋ was continuously generated,which absorbed the SO2＋4 in leaching process.By adding different anti-incrustation agent in experiments,and with the help of scanning electron microscopy,the inhibiting effect of the anti incrustation agent on the incrustation of ores was verified.The mechanism of the anti-incrustation agent was mainly chelate effect and crystal distortion effect.
出处
《金属矿山》
CAS
北大核心
2010年第10期68-71,150,共5页
Metal Mine
基金
国家自然科学基金项目(编号:51074013)
国家自然科学基金重点项目(编号:50934002)
新世纪优秀人才支持计划项目(编号:NECT-07-0070)
关键词
矿石
结垢
电镜扫描
防垢剂
Ore
incrustation
SEM
Anti-incrustation agent
