Research on the Mechanism of the Dissociation of Potassium Shale during roasting

机译：焙烧过程中钾页岩解离机制的研究

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It was studied that the process and mechanism of potassium extraction from the potassium-rich shale sample during roasting via SEM, XRD and thermal analysis (TG and DSC). The result of roasting test shows that roasting size has a little affect on ratio of potassium extraction, however, the effect of roasting temperature, roasting time and mNaOH:mshale on potassium extraction is significant. Under the optimum conditions, the ratio of potassium extraction is more than 88 %. SEM, XRD and thermal analysis shows that, during roasting, NaOH contributes to decomposition and melt of the minerals like potassium feldspar and muscovite in the sample and intact structure of minerals in the shale are broken down gradually and there are new crystal phases like kalsilite in the roasting products. Under alkali conditions, increasing roasting temperature promotes decomposition of silicate and aluminosilicate minerals.

机译：研究了通过SEM，XRD和热分析（TG和DSC）焙烧富含富含钾的页岩样品的钾萃取的方法和机制。焙烧试验的结果表明，烘焙尺寸有一点影响钾萃取比例，然而，焙烧温度，焙烧时间和mnaOH的效果：MSHALE对钾萃取的显着显着。在最佳条件下，钾提取的比例大于88％。 SEM，XRD和热分析表明，在烘焙过程中，NaOH在钾盐和Moscovite等矿物质中的分解和融化的矿物质在样品中逐渐破裂，并且存在像Kalsilite这样的新晶相烤制品。在碱条件下，烘焙温度的增加促进硅酸盐和硅铝酸盐矿物的分解。

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《International forum on powder technology application》|2009年||共8页
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中图分类粉末技术;
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potassium extraction; potassium-rich shale; roasting; kalsilite;

机译：钾萃取;钾富含钾;烤;Kalsilite.;

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Research on the Mechanism of the Dissociation of Potassium Shale during roasting

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