Reclamation of used green sand in small scale foundries
WEBMay 1, 2018 · 3. Third prototype (Ball mill with sieve filter) A 2 hp electric motor was used to rotate the ball mill with sieve filter. Total clay of % was obtained at 30 RPM in 25 min. A hp motor was used to dry the sand. (See Table 4 in the manuscript). Power consumed in 25 min. = + = hp = kWatth.