纯水浸泡条件下电气石中矿物元素的溶出特性研究

    Investigation on Mineral Elements Dissolving-out Properties of Tourmaline Under Pure-water Immersing Condition

    • 摘要: 利用矿物材料的溶出特性增加水中的矿物元素含量,是解决纯净水中矿物元素缺失的有效方法。本研究中,考查电气石在纯水浸泡条件下的矿物元素溶出性能,并对浸出前后的材料进行表征。结果表明:酸性条件有利于电气石中矿物元素的溶出,且电气石具备对溶液的碱性调节能力。增大固液质量比、延长浸泡时间及升高浸泡温度均有利于提高浸泡液中不同矿物元素的浓度。30 d溶出持久性实验证明,电气石中Mg、Al、Ca、Fe和Sr具备持续溶出能力。对浸泡前后电气石表面形貌及元素含量进行考查后发现,浸泡后电气石表面生成了颗粒状晶体,但元素含量未发生明显变化。

       

      Abstract: This is a paper in the field of metallurgical engineering. In order to solve the lack of mineral elements in pure water, increasing their concentration via the dissolution characteristics of mineral materials was a valid method. In this study, the dissolution characters of tourmaline in pure water were investigated and the tourmaline were characterized before and after immersing. The results showed that the immersing solution initial at acid pH value was in favor of the dissolution of mineral elements and its pH value was finally regulated to be alkaline. The increase of ratio of liquid to solid, immersing time and temperature could enhance the dissolved efficiencies of different mineral elements. The result of 30 d immersing experiment illustrated Mg, Al, Ca, Fe and Sr possessed durable immersing character of the mineral elements. The tourmaline’s surface morphology and mineral elements distribution before and after immersing experiments were also examined and it was found that there existed granular crystal after immersing, but no significant changes inmineral elements contents were observed.

       

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