结果表明：长石在水中碱溶出量比较少，溶出的碱主要是钠碱。
The results showed that only small amount of alkalis in feldspar were extracted when autoclaved with water, and the majority of extract is sodium oxide.
通常以硅酸钠水溶液作为单体硅源，氢氧化钠溶液作为碱激发剂以提高原料的溶出性。
Generally, sodium silicate solutions are used for monomer sources added with caustic soda solutions for activation of leaching out of fillers.
山西铝土矿呈一水硬铝石型，高铝、高硅、低铁的特点，拜耳法生产氧化铝工艺须在高温，高碱的条件下溶出。
Featured with diaspore, high alumina, high silicon and low iron, the bauxite in Shanxi have to be digested under higher temperature and denser soda in Bayer process.
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