The difference between crushing and grinding
Each plant sorting ore breaking and grinding work although each has its characteristics, but they all have in common:
(1) Crushing and grinding in stages;
(2) The crusher is usually used and a sieve;
(3) Grinding machine is usually used with grading equipment;
(4) The homework to adopt the proper equipment.
Crushing and grinding shall be carried out in stages, the reason is that the existing equipment can't once produced huge ore block broken to selected fine grained, suitable for processing in each stage of grain size and mineral aggregate nature of the equipment. In general, only the crushing and no grinding separation plant is very rare, there are usually two sections of crushing and grinding. And every broken only part of the total reduction work, the entire process to ensure complete task.
Preliminary screening, it is to bring to the crusher in the ore than row of ore block ore with sieve to first, thus reducing load of crusher.
Check screening is to screen out the stone that larger than row ore mouth in the crusher. Ensure the product qualified particle size.
Preparation screening is to prepare material and send to the next stage of work.
Final screening is to put the crushed mine product screen into each graded according to the requirements of customers, as factory products.
The classification device that connected with grinding machine has the function of preliminary classification, check classification and overflow control classification. Preliminary classification is to sort the grains that not need to be grinded, and feed the unqualified coarse grain to the grinding machine. This process is similar to pre-screening.
Check classification is to separate the finished fine grain from the materials in the grinding machine, and return unqualified coarse grain to the grinding machine for further grinding, which is similar to check screening.
Classification device and grinding machine work together that form the grinding process.