PROCESS FOR WET CRUSHING OF HARD SUBSTANCES

In a process for wet crushing of hard substances, such as cement, concrete, limestone, coal, ores, ceramics, drilling mixes or medical mixes, in which coarse hard substances are introduced in a crushing device together with a liquid and are crushed to particle sizes of about 700 µm to 20 mm and a slurry consisting essentially of crushed hard substances and water is discharged whereby 10 to 90 % by weight coarse hard substances and 90 to 10 % by weight liquid are introduced in a crushing and homogenisation device, the coarse hard substances are broken in at least one crushing and homogenisation step by using periodical shock pulses to particle sizes of about 1 µm to 700 µm and a homogenous fluid consisting of fine crushed hard substances and liquid is discharged as well as device for performing this process.