Abstract: The studies for raising potash feldspar utilization ratio by physical, biological and
chemical methods are carried out in laboratory and the results are presented. It is shown
that calcinatory and biological methods have positive effects on conversion of K in potash
feldspar into water-soluble form, but the conversion is low; chemical method can change
most of insoluble potassium into available form, and might be significant in industry to
some extent.

Key words: potash feldspar, conversion ratio, biological method, physical method, chemical method

摘要： The studies for raising potash feldspar utilization ratio by physical, biological and
chemical methods are carried out in laboratory and the results are presented. It is shown
that calcinatory and biological methods have positive effects on conversion of K in potash
feldspar into water-soluble form, but the conversion is low; chemical method can change
most of insoluble potassium into available form, and might be significant in industry to
some extent.

关键词: 钾长石;转化率;实验室研究;水溶性;营养元素;碳酸钾;制备;钾肥;农业应用