sand dryer gold recovery,Final Clean-up and Recovery of Your Gold - The New 49ersStill, a large, visible amount of black sand being present is not necessarily a sign that you are losing gold. Gold is about four times heavier than black sand. As long as there remains fluid action behind the riffles, the black sand might have little or no effect upon gold recovery. The best way to evaluate your recovery system is.sand dryer gold recovery,Rotary Dryer Design & Working Principle - 911 MetallurgistMar 17, 2017 . If it is not possible to apply heat direct to the material to be dried, Rotary Dryers of the Indirect Heating Design can be furnished so that the heated gases .. Of the different types of dryers that there are the most common is the ROTARY DRUM DRYER/Kiln, This type of drier is common not only in the mining.