我院药剂室采用从造纸废液中提取的塔尔油作原料,合成了一种适于贫铁矿浮选的新型捕收剂——塔尔羟肟酸,其捕收力强,选择性好,工艺简单,成本较低。我们用塔尔羟肟酸与柴油互溶成混合剂,对东鞍山和齐大山的贫赤铁矿石分别进行了试验室浮选试验:原矿磨至-200目占85～90％直接进入浮选,在弱碱性(pH=8～9)介质中,分两段添加捕收剂,经一次粗选可丢弃产率达48～54％、含铁3～5％的低品位尾矿,粗 In our hospital pharmacy, Tar oil extracted from papermaking wastewater was used as a raw material to synthesize Talhahydroxamic acid, a new collector suitable for flotation of poor iron ores. Good, simple process, low cost. We used talc hydroxamic acid and diesel miscible as a mixture of lean hematite ore on the East Anshan and Qishan respectively flotation test: ore mill to -200 mesh accounted for 85 to 90% directly into the flotation , In weakly alkaline (pH = 8 ~ 9) media, add collector in two stages, after a rough selection can discard the yield of 48 ~ 54%, iron 3 ~ 5% of low-grade tailings, crude