摘要
铜钼矿混合浮选采用石灰、z-200、煤油和2号油的药剂组合可以得到指标良好的铜钼混合精矿,但混合精矿中残余大量药剂,严重影响铜钼分离。本文采用紫外光谱法(UV)定量测定铜钼混合精矿中残余的z-200含量,并探讨了矿浆中煤油,2号油和石灰对z-200测量的干扰影响。试验结果表明,煤油和2号油的存在对z-200的测量干扰不大,石灰的吸光度随着pH升高而升高,且石灰与z-200在241 nm处吸光度具有加和效应;铜钼混合精矿中残余的z-200的含量约为混合浮选过程中药剂添加量的10%。活性炭可以有效脱除精矿中残余药剂,通过紫外光谱法的定量测量,可准确找到活性炭最佳的用量,从而避免活性炭浪费和对铜钼分离环节的影响,对于混合精矿,当活性炭用量为30kg·t-1(对于原矿,480 g·t-1)时,混合精矿中残余药剂基本被吸附干净。
Mixed concentrate with good indexes was obtained by Cu-Mo mixed flotation with flotation reagents of lime, z-200, kero- sene and oil 2. A large number of residual reagents in mixed concentrate seriously affected the separation of copper and molybdenum. The content of residual z-200 in mixed concentrate was determined by ultraviolet （UV） spectrometry. The interference effects of kero- sene, oil 2 and lime on z-200 measurement were also discussed. The results showed that the presence of kerosene and oil 2 had little interference on the z-200 measurement. With the increase of pH, the absorbance of lime water increased continuously in the detel^nina- tion range. The absorbance of z-200 and lime exhibited good additive property at the wavelength of 241 nm. The residual amount of z- 200 of mixed concentrate was about 10% of the amount added. Activated carbon effectively removed residual chemicals in the concen- trate. The optimal dosage of activated carbon was accurately found by quantitative measurement of ultraviolet spectroscopy, thereby avoiding the waste of activated carbon and the influence on Cu-Mo separation flotation. When the dosage of activated carbon was 30 kg·t^-1 for mixed concentrate （480 g·t^-1 for raw ore） , the residual reagents in the mixed concentrate were basically absorbed by activated carbon.
作者
管晓颖
宋永胜
李文娟
屈伟
Guan Xiaoying Song Yongsheng Li Wenjuan Qu Wei(National Engineering Laboratory of Biohydrometallurgy, General Research Institute for Nonferrous Metals, Beijing 100088, China)
出处
《稀有金属》
EI
CAS
CSCD
北大核心
2017年第7期810-815,共6页
Chinese Journal of Rare Metals
基金
国家"十二五"科技支撑计划项目(2012BAB10B00)资助
关键词
铜钼混合精矿
z-200
残余药剂
紫外光谱
活性炭脱药
Cu-Mo mixed concentrate
z-200
residual reagent
ultraviolet spectrum
reagent removal by active carbon
