rotary washing pan
Written by Administrator   
Monday, 29 October 2007

Rossini Jewel. Trade name for man-made strontium titanate

. rotary washing pan. A device used to free Diamonds from soil, sands, gravel, or crushed ore by subjecting it to the action of water in order to extract by density differences the valuable material. The washing pan is an annular container, about 5 feet in diameter and about 10 inches deep. A vertical axle connected to the central hole has 4 crossed arms