Screening refers to a crushing process in which approximately 15% of the particles produced by the crusher through initial crushing do not meet production requirements and are considered unqualified. At this point, it is necessary to screen out the unqualified products and return them to the crusher for further crushing. This process is called inspection screening.

Inspection screening is the process of screening the products of crushing operations, with the aim of controlling the crushed products to meet particle size requirements. Inspection screening refers to the screening operation that forms a closed circuit with the crusher (mainly the fine crusher). In a crushing process, about 15% of the particles produced by the crusher through initial crushing usually do not meet production requirements and are unqualified. At this point, it is necessary to screen out the unqualified products and return them to the crusher for further crushing. This process is called inspection screening.