hardinge ball mills uk

The Hardinge Ball Mill consists of three sections. After the usual type of trunnion bearing the mill consists of a short conical section showing a sharp drop from feed entrance to maximum mill radius.

A Hardinge mill is a type of mill where the discharge end of the mill shell is conical in shape. This permits the finer particles to preferentially move into the cone section resulting in some segregation of both fine particles and fine balls within the mill.

Grinding can be done either wet or dry, and on account of the Conical shape of a Hardinge Mill, a positive discharge can be obtained without the use of internal screens, such as are employed with practically all high speed pulverizers and machines of the ordinary ball mill type.

The Conical Mill is now being used in all parts of the World, having substituted these latter types of machines in the grinding of ores and other materials. Hardinge Conical Ball Mills are used to do the work of any combination of the above machines and will produce the desired results, depending upon the size and type of mill used.

M. E., Sept., 1917) has also demonstrated that efficient Hardinge-mill operation cannot be effected by single-passage grinding, and a return classification system is indicated as desirable, as with the cylindrical mill. This would seem effectively to dispose of the ‘ graduated blow” theory. Standard Sizes of Hardinge Mills are given in Table XLVII.

The ball mill is a key piece of equipment for grinding crushed materials, and it is widely used in production lines for powders such as cement, silicates, refractory material, fertilizer, glass ceramics, etc. as well as for ore dressing of both ferrous and non-ferrous metals.