Bauxite dissolution sleeve cleaning method

The invention discloses a bauxite dissolution casing pipe cleaning method which comprises the following steps: firstly, introducing clear water into a dissolution casing pipe for washing until the pH value of return water reaches 7, then introducing a prepared first pickling solution into the dissolution casing pipe for pickling, reducing the concentration of the pickling solution to be recycled to a certain concentration, a prepared second pickling solution is introduced into the dissolution sleeve for secondary pickling, after pickling is qualified, clean water is introduced into the dissolution sleeve again for washing till the pH of return water reaches 7, and cleaning is finished. Compared with cleaning through a high-pressure water cleaning machine, cleaning cost, labor consumption and cleaning time are reduced, the technology is simple, and obvious technical advantages and economic advantages are achieved. 本发明公开了一种铝土矿溶出套管清洗方法，包括：首先向溶出套管中通入清水进行水洗，至回水pH达到7，然后将配置好的第一酸洗液通入溶出套管中进行酸洗，待回收的酸洗液浓度降低到一定浓度，将配置好的第二