Method for preparing potassium fluotitanate

一种制备氟钛酸钾的方法

Abstract

本发明提供了一种制备氟钛酸钾的方法。所述方法采用隔膜电解槽来制备氟钛酸钾,所述隔膜电解槽包括阴极室、阳极室以及设置在所述阴极室与所述阳极室之间的膈膜室,并且所述膈膜室具有第一侧壁和第二侧壁,其中,所述第一侧壁靠近所述阴极室并由阴离子交换膜形成,所述第二侧壁靠近所述阳极室并由阳离子交换膜形成,所述方法包括以下步骤:在所述阴极室中形成含有和的溶液,在所述膈膜室中形成含有K+和F-的溶液,在所述阳极室中加入水,以构成电解体系;通电电解,在所述膈膜室中获得氟钛酸钾晶体。本发明的方法能够制得大晶粒尺寸高纯度的氟钛酸钾晶体,而且钛的提取率高,成本低。
The invention provides a method for preparing potassium fluotitanate. According to the method, a diaphragm electrolytic cell is adopted to prepare the potassium fluotitanate, wherein the diaphragm electrolytic cell comprises a cathode chamber, an anode chamber and a diaphragm chamber which is arranged between the cathode chamber and the anode chamber and is provided with a first side wall and a second side wall; the first side wall is close to the cathode chamber and is formed by an anion exchange membrane; and the second side wall is close to the anode chamber and is formed by a cation exchange membrane. The method comprises the following steps of: forming a solution containing TiF6<2-> and NH4<+> in the cathode chamber, forming a solution containing K<+> and F<-> in the diaphragm chamber, and adding water into the anode chamber to form an electrolysis system; and electrifying to perform electrolysis so as to obtain potassium fluotitanate crystals in the diaphragm chamber. By adopting the method, the potassium fluotitanate crystals with a large crystalline grain size and high purity can be prepared, the extraction rate of titanium is high, and the cost is low.

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Cited By (1)

    Publication numberPublication dateAssigneeTitle
    CN-104818525-AAugust 05, 2015中国科学院合肥物质科学研究院一种十字架结构氟钛酸