CAJ | 학술논문

以糊精为抑制剂,十二胺(DDA)、十二烷基三甲基氯化铵(DTAC)为捕收剂,通过零调浆方法,研究了不同捕收剂和不同 pH 值对煤泥反浮选的影响.试验结果表明,DDA对煤泥的反浮选的效果比 DTAC 好,当糊精的用量为1500 g/t、DDA 的用量为800 g/t时,浮选精矿的灰分为54.38％,浮选尾矿的灰分为19.72％,浮选精矿的灰分和浮选尾矿灰分差值最大可达34.66％,浮选尾矿产率为49.42％,此时取得最佳浮选结果.矿浆的pH 值对反浮选有着显著影响,在pH 值为4时的酸性矿浆中煤泥反浮选的效果最好.
이호정위억제제,십이알(DDA)、십이완기삼갑기록화안(DTAC)위포수제,통과령조장방법,연구료불동포수제화불동 pH 치대매니반부선적영향.시험결과표명,DDA대매니적반부선적효과비 DTAC 호,당호정적용량위1500 g/t、DDA 적용량위800 g/t시,부선정광적회분위54.38％,부선미광적회분위19.72％,부선정광적회분화부선미광회분차치최대가체34.66％,부선미광산솔위49.42％,차시취득최가부선결과.광장적pH 치대반부선유착현저영향,재pH 치위4시적산성광장중매니반부선적효과최호.
Using dextrin as depressor and DDA and DTAC as collectors,the effect of various collectors and pH value on the reverse flotation have been investigated with the zero-conditioning time method.The results showed that DDA had better selectivity than DTAC. When the dosage of dextrin was 1500 g/t,DDA was 800 g/t,the ash contents of the reject was 54.38%,the ash contents of the concentrate was 19.72%,the difference value was up to 34.66%,the reject yield was 49.42%. The best reverse flotation result was obtained under an acidic pH of 4 for this coal.