从钼铁合金中提取钼的新工艺研究  

A novel technology of Extraction Molybdenum from Ferromolybdenum

作　　者：施丽华 江伟 郭艳平 

机构地区：[1]广东环境保护工程职业学院环境工程与土木工程系,广东佛山528216

出　　处：《广东化工》2015年第12期65-66,共2页Guangdong Chemical Industry

摘　　要：在以碳酸钠作为添加剂对钼铁合金进行氧化焙烧的基础上,开发出一种以石灰代替部分碳酸钠对钼铁合金进行氧化焙烧水浸提钼的新工艺。分别对两种焙砂进行水浸,比较了两者的钼和杂质的浸出率,且分析了两者的浸出液成分。实验结果表明,50 g钼铁合金粉中加入17 g碳酸钠和10 g工业石灰(Ca O/Na2CO3摩尔比为0.75),700℃焙烧2 h,焙砂按液固比3∶1,100℃加水搅拌浸出2 h。钼的浸出率达97.5%。杂质磷、砷、硅的浸出率比未加石灰焙烧浸出明显更低,分别为6.2%、18.1%和41.8%,钒的浸出率为70.2%。因此,此采取新工艺从钼铁合金中提取钼是可行的。On the base of ferromolybdenum oxidation roasting with additive （Na2CO3）, a novel technology was developed, that is lime replaced part of Na2CO3 was additive to roast to extractive molybdenum. After the two roasted products water leaching, each leaching rate of molybdenum was compared; each composition of leaching solution was compared, too. The results showed that the extraction of molybdenum reached 97.5 % when 50 g ferromolybdenum roasting with 17 g Na2CO3 and 10 g lime addition （CaO/Na2CO3 mole ratio of 0.75） at 700℃ for 2 h, then water leaching at 100℃ for 2 h with liquid/solid ratio of 3 ： 1, while the leaching rate of phosphorus, arsenic and silicon were much lower than non-lime roasting, only 16.2 %, 18.1% and 41.2 % respectively, vanadium＇s leaching rate was 70.2 %. So ,the extraction of molybdenum from ferromolybdenum by the novel technology was feasible.

关 键 词：钼 钼铁合金 氧化焙烧 水浸 碳酸钠 石灰 

分 类 号：TQ[化学工程]