Polishing the feeder surfaces may also helps to solve the problem. But I guess the sticky caracter of the dust arises from an elevated temperature in the mixer. Check the temperature of the dust and cool it if required.
Stefano/010830
To the large amount of water, small amount of sulfuric acid is continuously added thru a mixing sparger inserted and guided in a pipe, the mixture is then continuously dumped into a liquid body of the dilute acid pump tank. The hot liquid mixture is pumped to the cooler. Usually vertical...
