CAJ | 학술논문

为检验东北大学自主合成的新型抑制剂DLW-4的性能及效果,对鞍钢集团鞍千矿业公司磁选混合精矿( MMC)进行了反浮选条件试验及1粗1精3扫、中矿顺序返回的反浮选闭路试验。结果表明,在浮选温度为40℃、粗选NaOH用量为800 g/t、抑制剂DLW-4为342 g/t、活化剂CaCl2为600 g/t、捕收剂RA-715为480 g/t时选别指标最佳。对铁品位为47．74%的磁选混合精矿经1粗1精3扫闭路试验,获得了铁品位为68．08%、回收率为88．20%的铁精矿。与常规淀粉抑制剂相比,DLW-4可以以更少的药剂用量获得更好的反浮选指标,具有推广价值。
위검험동북대학자주합성적신형억제제DLW-4적성능급효과,대안강집단안천광업공사자선혼합정광( MMC)진행료반부선조건시험급1조1정3소、중광순서반회적반부선폐로시험。결과표명,재부선온도위40℃、조선NaOH용량위800 g/t、억제제DLW-4위342 g/t、활화제CaCl2위600 g/t、포수제RA-715위480 g/t시선별지표최가。대철품위위47．74%적자선혼합정광경1조1정3소폐로시험,획득료철품위위68．08%、회수솔위88．20%적철정광。여상규정분억제제상비,DLW-4가이이경소적약제용량획득경호적반부선지표,구유추엄개치。
In order to test the properties and floating behavior of a new depressor DLW-4 synthesized by Northeastern U-niversity,one roughing-one cleaning-three scavenging flotation process was conducted on the Magnetic Mixed Concentrate ( MMC) of Anqian Mining Company in Anshan Iron and Steel Group. The results indicated that,at the slurry temperature of 40℃,optimum separation index could obtained with NaOH dosage of 800 g/t,depressor DLW-4 of 342 g/t,activator CaCl2 dos-age of 600 g/t,collector RA-715 of 480 g/t. Iron concentrate with iron grade of 68. 08% and recovery of 88. 20% is obtained via one roughing-one cleaning-three scavenging closed circuit flotation operation to dealing with MMC, Fe grade of which is 47. 74%. Compared with regular depressor starch,DLW-4 could gain better reverse flotation indexes with relative fewer reagent dosage,and thus have promotional value.