Ball Mill an overview | ScienceDirect Topics. Ball mills. The ball mill is a tumbling mill that uses steel balls as the grinding media. The length of the cylindrical shell is usually times the shell diameter (Figure ). The feed can be dry, with less than 3% moisture to minimize ball coating, or slurry containing 2040% water by weight.
Baill (SC; 200 g), Lycium chinense Mill (LC; 200 g) and Eucommia ulmoides Oliv (EU; 200 g) were purchased from an oriental medicine store (Jung-do Herb Co., Seoul, Korea). The voucher specimens (SC-W100, LC-W100 and EU-W100 for SC, LC and EU, respectively) were deposited in the herbarium at the College of Korean Medicine, Kyung …
The characteristic tumbling motion of these mills has given them the name 'tumbling mills', which include the ball mill, tube mill and rod mill. Ball mills are horizontal rotating cylindrical or conical steel chambers, approximately one third to half full of steel, alloy steel or iron balls, like that shown in Fig. 4.10 A–C, or flint stones.