How to improve rubber recovery efficiency

The recycling efficiency of glue is very low. The following improvements can be considered: 1, hanging the column twice, that is, after the colloidal solution is centrifuged, the liquid in the collection tube is added to the membrane for centrifugation; 2, eluting the eluent twice, and taking the eluent as the eluent; 3. Preheat the eluent to above 50 degrees; 4. The eluent is alkaline, and TE solution can be used.