CAJ | 학술논문

通过单矿物浮选试验,考察了Na+、K+、Ca2+、Mg2+、Fe3+、Al3+这6种金属离子在酸性条件下对十二烷基磺酸钠( SDS)浮选蓝晶石的影响,结果表明：一价离子Na+、K+对蓝晶石的浮选基本没有影响；二价离子Ca2+、Mg2+对蓝晶石的浮选有抑制作用,且Ca2+的抑制能力更强；三价离子Fe3+、Al3+对蓝晶石的浮选有活化作用,且Al3+的活化能力更强。以Ca2+和Fe3+分别为二价离子和三价离子的代表,通过溶液化学分析了它们的抑制机理和活化机理,结果表明：钙离子在酸性介质中的主要水解组分为Ca2+,Ca2+易与SDS中的磺酸基形成难溶物,从而使SDS被消耗大量而产生抑制作用；铁离子在酸性条件下对蓝晶石起活化作用的有效水解组分因pH值不同而变化,pH<2.5时 FeOH2+和Fe(OH)2+是起活化作用的有效水解组分,pH≥2.5时Fe(OH)3(s)是起活化作用的有效水解组分。
통과단광물부선시험,고찰료Na+、K+、Ca2+、Mg2+、Fe3+、Al3+저6충금속리자재산성조건하대십이완기광산납( SDS)부선람정석적영향,결과표명：일개리자Na+、K+대람정석적부선기본몰유영향；이개리자Ca2+、Mg2+대람정석적부선유억제작용,차Ca2+적억제능력경강；삼개리자Fe3+、Al3+대람정석적부선유활화작용,차Al3+적활화능력경강。이Ca2+화Fe3+분별위이개리자화삼개리자적대표,통과용액화학분석료타문적억제궤리화활화궤리,결과표명：개리자재산성개질중적주요수해조분위Ca2+,Ca2+역여SDS중적광산기형성난용물,종이사SDS피소모대량이산생억제작용；철리자재산성조건하대람정석기활화작용적유효수해조분인pH치불동이변화,pH<2.5시 FeOH2+화Fe(OH)2+시기활화작용적유효수해조분,pH≥2.5시Fe(OH)3(s)시기활화작용적유효수해조분。
Through single mineral flotation test,the effects of Na+,K+,Ca2+,Mg2+,Fe3+,Al3+ six metal ions on flotation system of kyanite-sodium dodecyl sulfate ( SDS) were studied. The results showed that monovalent ions Na+,K+ have no effect on flotation behavior of kyanite-SDS;Divalent ions Ca2+,Mg2+ exhibit inhibition effects on flotation of kyanite-SDS,and Ca2+has more intensity;Trivalent ions Fe3+,Al3+exhibit activation on flotation of kyanite-SDS,and Al3+owns more activating abili-ty. The mechanism of inhibition and activation of divalent ions ( representative by Ca2+) and trivalent ions ( representative by Fe3+) is analyzed by solution chemistry. The results showed that in the acidic medium the main component of calcium ion is Ca2+,which is easy to form the insoluble matter together with the sulfonic acid group of SDS,consuming large amounts of phar-macy and exhibiting inhibition. Iron ion has the different active ingredients on playing the role of activation in kyanite-SDS sys-tem at different pH. When pH<2. 5,FeOH2+ and Fe(OH)2+ were the effective components on playing the role of activation, when pH≥2. 5,Fe(OH)3(s) was the effective component on playing the role of activation.