十二胺浮选体系中金属离子对蓝晶石矿物浮选行为的影响

通过单矿物浮选试验,考察了十二胺体系中金属离子对蓝晶石矿物的浮选行为研究。试验结果表明:随着CaCl_2用量增加,蓝晶石的回收率呈快速增加的趋势,当CaCl_2用量为10 mg/L时,此时蓝晶石的回收率达到85.87%;Mg~(2+)对蓝晶石可浮性的影响规律与Ca~(2+)相比较有一定的相似处,但在相同药剂用量条件下,Mg~(2+)对蓝晶石矿物浮选的活化程度要低一些;随着AlCl_3用量的增加,蓝晶石的浮选回收率呈迅速下降的趋势,当矿浆中AlCl_3用量仅为5.5 mg/L时,此时蓝晶石浮选回收率降低到0,Fe~(3+)对蓝晶石的浮选也起到了较强的抑制作用。浮选溶液化学表明,Fe~(3+)在蓝...

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Published in矿产综合利用 no. 1; pp. 36 - 39
Main Author 张晋霞;于浩;邹玄;王龙
Format Journal Article
LanguageChinese
Published 华北理工大学矿业工程学院,河北 唐山,063009 2018
河北省矿业开发与安全技术重点实验室,河北唐山063009%华北理工大学矿业工程学院,河北 唐山,063009
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ISSN1000-6532
DOI10.3969/j.issn.1000-6532.2018.01.008

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Summary:通过单矿物浮选试验,考察了十二胺体系中金属离子对蓝晶石矿物的浮选行为研究。试验结果表明:随着CaCl_2用量增加,蓝晶石的回收率呈快速增加的趋势,当CaCl_2用量为10 mg/L时,此时蓝晶石的回收率达到85.87%;Mg~(2+)对蓝晶石可浮性的影响规律与Ca~(2+)相比较有一定的相似处,但在相同药剂用量条件下,Mg~(2+)对蓝晶石矿物浮选的活化程度要低一些;随着AlCl_3用量的增加,蓝晶石的浮选回收率呈迅速下降的趋势,当矿浆中AlCl_3用量仅为5.5 mg/L时,此时蓝晶石浮选回收率降低到0,Fe~(3+)对蓝晶石的浮选也起到了较强的抑制作用。浮选溶液化学表明,Fe~(3+)在蓝晶石表面吸附后提高了矿物表面电性,使十二胺的静电吸附力减弱,同时在中性条件下Fe~(3+)可以在蓝晶石矿物表面生成Fe(OH)_3沉淀,使矿物浮选受到强烈的抑制;Ca~(2+)羟基络合物的存在导致蓝晶石矿物的零电点偏向低pH值方向移动,提高了十二胺的静电吸附力,活化了蓝晶石矿物浮选。
Bibliography:51-1251/TD
Kyanite; Metal ions; Flotation behavior
Zhang Jinxia1,2,yu Hao1, Zou Xuan1, Wang Long1,2 (1 College of Mining Engineering, North China University of Science and Technology, Tangshan, Hebei, China; 2 Hebei Province mining industry develops with safe technology priority laboratory, Tangshan, Hebei, China)
The influences of metal ions on floatability of kyanite were studied by flotation tests in dodecylamine system.The test results show that with the increase of CaCl_2 content,the recovery rate of kyanite showed a rapid increase trend.When the dosage of CaCl6 was 10mg/L,the recovery rate of kyanite reached 85.87%.The influence law of Mg~(2+) on kyanite flotability compared with Ca~(2+)had certain similarities,but under the condition of same drug dosage,the activation degree of Mg~(2+) on kyanite mineral flotation was lower.With the increase of AlCl_3 dosage,the flotation recovery rate of kyanite decreased rapidly.When the amount of AlCl_3 was 5.5 mg/L,the flotation recovery rate of kyanite is reduced to
ISSN:1000-6532
DOI:10.3969/j.issn.1000-6532.2018.01.008