Molybdenum removal method of ammonium tungstate feed liquid

The invention provides a molybdenum removal method of ammonium tungstate feed liquid. The method comprises the steps of a sulfurizing step, wherein a sulfurizing agent is added in the ammonium tungstate feed liquid, and sulfurizing feed liquid is obtained; a stepped adsorption step, wherein the sulf...

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Hauptverfasser: HU YUNZHEN, ZENG XIANGRONG, LI XINDONG, HUANG WANFU, ZHANG TIANXI, ZENG BIN, HUANG-LI JINHONG
Format: Patent
Sprache:chi ; eng
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Zusammenfassung:The invention provides a molybdenum removal method of ammonium tungstate feed liquid. The method comprises the steps of a sulfurizing step, wherein a sulfurizing agent is added in the ammonium tungstate feed liquid, and sulfurizing feed liquid is obtained; a stepped adsorption step, wherein the sulfurizing feed liquid is subjected to primary adsorption through WDA918 resin until achieving saturation, primary post-adsorption liquid is obtained and subjected to secondary adsorption through 201*7 resin until achieving saturation, and the molybdenum-removed ammonium tungstate feed liquid is obtained. Two kinds of resin are combined for use, the two kinds of the resin can achieve high adsorption capacity, and the good adsorption effect is achieved. 本发明提供了一种钨酸铵料液的除钼方法,包括,硫化步骤,向钨酸铵料液中加入硫化剂,得到硫化料液;梯级吸附步骤,将所述硫化料液通过WDA918树脂进行一次吸附至饱和,得到一次吸附后液,将所述一次吸附后液通过201×7树脂进行二次吸附至饱和,得到除钼的钨酸铵料液,将两种树脂结合使用,可以使两种树脂均达到较高的吸附容量,且具有较好的吸附效果。