Extraction process of potassium

The invention relates to an extraction process of potassium. The extraction process comprises the following steps of step 1, grinding; step 2, conducting ion exchange reaction; step 3, separating; step 4, extracting filter residues; step 5, leaching; step 6, combining the filtrate; and step 7, purifying. The process is efficient, the lamellar structure of the mica subjected to potassium removal isnot damaged, and the potassium removal product with a good lamellar structure can be used as a raw material of other processes. 一种钾的提取工艺，包括如下步骤：步骤一：研磨；步骤二：离子交换反应；步骤三：分离；步骤四：滤渣提取；步骤五：浸出；步骤六：滤液合并；步骤七：提纯。本发明的工艺高效，并且脱钾后的云母，片层结构并未遭到破坏，保留有良好片层结构的脱钾产物能用作其它工艺的原料。