北京科技大学学报
北京科技大學學報
북경과기대학학보
JOURNAL OF UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING
2014年
2期
153-160
,共8页
印万忠%王纪镇%王乃玲%罗溪梅%王余莲
印萬忠%王紀鎮%王迺玲%囉溪梅%王餘蓮
인만충%왕기진%왕내령%라계매%왕여련
铁矿石%碳酸盐%浮选药剂%三聚磷酸钠%十二烷基磺酸钠
鐵礦石%碳痠鹽%浮選藥劑%三聚燐痠鈉%十二烷基磺痠鈉
철광석%탄산염%부선약제%삼취린산납%십이완기광산납
iron ores%carbonates%flotation agents%sodium tripolyphosphate%sodium dodecyl sulfate
探索了矿浆pH值、分散剂和辅助捕收剂对含碳酸盐铁矿石一步直接反浮选影响.浮选实验结果表明,矿浆pH值由11.0增加到11.8时铁精矿品位陡增,pH值等于11.8时品位达到最高,此后品位变化不明显.矿浆pH值为12.0时,三聚磷酸钠是有效分散剂,十二烷基磺酸钠是KS-Ⅲ有效辅助捕收剂,两种药剂都可同时提高铁精矿的品位和回收率.理论计算表明,浮选实验结果与菱铁矿的浮选溶液化学行为以及颗粒间的相互作用有关.药剂结构性能计算表明,十二烷基磺酸钠在铁矿石阴离子反浮选中有良好的选择性、乳化性和溶解性.
探索瞭礦漿pH值、分散劑和輔助捕收劑對含碳痠鹽鐵礦石一步直接反浮選影響.浮選實驗結果錶明,礦漿pH值由11.0增加到11.8時鐵精礦品位陡增,pH值等于11.8時品位達到最高,此後品位變化不明顯.礦漿pH值為12.0時,三聚燐痠鈉是有效分散劑,十二烷基磺痠鈉是KS-Ⅲ有效輔助捕收劑,兩種藥劑都可同時提高鐵精礦的品位和迴收率.理論計算錶明,浮選實驗結果與蔆鐵礦的浮選溶液化學行為以及顆粒間的相互作用有關.藥劑結構性能計算錶明,十二烷基磺痠鈉在鐵礦石陰離子反浮選中有良好的選擇性、乳化性和溶解性.
탐색료광장pH치、분산제화보조포수제대함탄산염철광석일보직접반부선영향.부선실험결과표명,광장pH치유11.0증가도11.8시철정광품위두증,pH치등우11.8시품위체도최고,차후품위변화불명현.광장pH치위12.0시,삼취린산납시유효분산제,십이완기광산납시KS-Ⅲ유효보조포수제,량충약제도가동시제고철정광적품위화회수솔.이론계산표명,부선실험결과여릉철광적부선용액화학행위이급과립간적상호작용유관.약제결구성능계산표명,십이완기광산납재철광석음리자반부선중유량호적선택성、유화성화용해성.
The effects of pulp pH values, dispersants and auxiliary collectors on direct reverse flotation of carbonate-containing iron ores were explored. Floatation experiment results show a sharp increase in iron grade as the pH value raises from 11.0 to 11.8, and the maximum grade can be obtained at pH 11.8, after which the iron grade has almost no change. When the pH value is 12.0, sodium tripolyphosphate is a kind of effective dispersant and sodium dodecyl sulfate is an effective auxiliary collector of KS-Ⅲ, both the iron recovery and grade increase with the action of sodium dodecyl sulfate or sodium tripolyphosphate. Theoretical calculations indicate that the floatation results are related to the solution chemistry of siderite and interactions between particles. Structure-activity calcula-tions of collectors show that sodium dodecyl sulfate has perfect selectivity, emulsion and solubility.