Analysis and preliminary adjustments on common reasons why the particle size of crushed products does not meet the standard

Analysis and preliminary adjustments on common reasons why the particle size of crushed products does not meet the standard

In daily production, if the particle size of crushed materials does not meet the requirements, it will directly affect the efficiency of subsequent processes and the quality of the final product. When this happens, there is no need to rush into complex repairs or major adjustments to the equipment. Many problems often originate from some basic links that can be checked and dealt with by yourself first.

One of the most common causes is normal wear and tear on critical components of the equipment. After the hammer head, jaw plate or impact plate inside the crusher collides with hard materials for a long time, its edges and corners will gradually become flat, resulting in weakened crushing force and inability to effectively "bite" the material to the set size. Operators can prevent such problems by regularly observing the shape of these wearing parts and checking and replacing them according to the recommended intervals in the equipment manual.

Secondly, changes in the characteristics of the raw materials put into the crusher are also important factors. If the hardness, humidity or lumpiness of the feed material suddenly increases and exceeds the current processing capacity of the equipment, it will easily become "chewable", resulting in large chunks mixed in the discharged material. For example, if the material is too wet, it will stick in the crushing cavity and affect the crushing efficiency. Therefore, keeping the feed properties relatively stable and pre-drying or coarsely crushing materials that are too wet or too large are the prerequisites to ensure that the particle size reaches the standard.

Improper setting of equipment operating parameters cannot be ignored either. If the gap at the discharge port is adjusted too large, the material will be discharged without being fully broken, and the particle size will naturally be coarse. On the contrary, if the gap is too small, the equipment may be overloaded or the material may be discharged too finely. In addition, the rotation speed of the equipment spindle will also affect the crushing effect. The operator should first check whether the current working parameters of the equipment, such as the opening of the discharge port, rotation speed, etc., match the process requirements of the crushed materials, and refer to the operation manual for precise fine-tuning.

Another simple checkpoint is the screening phase. Crushed materials usually need to be graded through a screen. If the screen is damaged or clogged due to long-term use, or the mesh size is improperly selected, qualified fine materials cannot be effectively separated, resulting in unqualified coarse particles being mixed into the final product. Regular cleaning and checking the integrity of the screen is the last guarantee to ensure the particle size of the final product.

In general, when the particle size of the crushed product does not meet the standard, it is recommended to follow the order from simple to complex: first, observe whether the feeding situation is stable; secondly, check the wear degree of core wearing parts; then check whether the operating parameters of the equipment are accurate; finally, confirm whether the screening system is working properly. Through this kind of systematic preliminary adjustment and maintenance, most common granularity problems can often be effectively solved and production stability and efficiency restored.