A process in which the selective hydrogenation of butadiene in FCC C4 + fraction and the distillation separation of the fraction take place concurrently to produce butylene.
催化裂化C4 +馏分中的丁二烯选择性加氢和该馏分蒸馏分离同时进行以生产丁烯的一种过程。
Compared with selective acid leaching, this process has the advantages of high extraction, completely metal separation and metal recovery easily.
该工艺与硫酸选择性浸出相比具有金属浸出率高、分离彻底、易分别回收等优点。
Using sequential selective flotation process and adding dextrin as main depressant obtain good separation result.
采用优先浮选工艺，糊精为主要抑制剂，获得了较好的分离指标。
Beneficiation techniques on limonite developed in recent years mainly include single process of gravity or magnetic separation etc. and combined processes with selective flocculation flotation etc.
近年来研究开发的褐铁矿选矿技术主要包括：重选、磁选等单一流程和选择性絮凝浮选等联合流程。
Beneficiation techniques on limonite developed in recent years mainly include single process of gravity or magnetic separation etc. and combined processes with selective flocculation flotation etc.
近年来研究开发的褐铁矿选矿技术主要包括：重选、磁选等单一流程和选择性絮凝浮选等联合流程。
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