Abstract
A dry magnetic separator has been applied to remove iron particles contaminated in common salt. But the dry separator is not used for “Common Grade Salt” containing more than 2% of moisture. In this experiment, a comparison on the removal was made among three types of wet magnetic separators in the sludge of salt, Filter type, Plate type and Drum type.
The results were;
1) The Filter Type Separator was the best removing 99.8% and 96% of added iron particles (3mg/kg raw dry salt) in the sludge feed 1.8 tons per hour and 13 tons per hour, respectively.
2) The results of Plate type and Drum type were 60-70% and 70-80% in the sludge feed less than 5 tons per hour.
3) The Filter type separator removed the contaminated iron particles to the quality of “Refine Salt”(0.04mg/iron particleskg Refine Salt)
4) As shown in 1)-3), the wet magnetic separator is applicable to the salt manufacturing factory for the removal of iron particles in the sludge of salt.
