What is the relationship between the efficiency of fine screening and the first stage of grinding?

One of the important factors influencing the efficiency of fine screening is the size of the product entering the fine screen. If the percentage of acceptable particle size in the product is large, the screening efficiency is higher. The key to the fine grain size of the fine screening operation is the first stage of grinding effect. If the first section of the ore is changed due to ore changes and the ore amount changes, or the grain size is rough due to improper operator, when the overflow product enters the fine sieve, not only will the efficiency decrease, but also a "vicious circle" will be produced. The taste of minerals has dropped dramatically. Therefore, careful operation of a grinding operation to ensure the stability of the qualified particle size can not only improve the efficiency of fine screening and screening, but also have obvious benefits for the improvement of concentrate quality.

Plastic Injection Molded Connector Accessories

Plastic connecter

Mechanical properties of injection connector fittings as far as connection functions are concerned, insertion and extraction forces are important mechanical properties. Plug force is divided into insert force and pull out force (pull out force is also called separation force), the requirement of both is different. In the relevant standards, there are provisions for maximum insertion force and minimum separation force, which indicate that, from the point of view of use, the insertion force should be small (hence the structure of LIF with low insertion force and ZIF without insertion force), and if the separation force is too small, it will affect the reliability of contact.
Another important mechanical property is the mechanical life of the connector. Mechanical life is actually a kind of durability index, which is called mechanical operation in GB5095. It is based on a cycle of one insert and one pull, and whether the connector can normally complete its connection function (such as contact resistance) after the specified plug cycle. The plug force and mechanical life of the connector are related to the plating quality (sliding friction coefficient) of the contact part of the contactor structure (positive pressure size) and the dimensional accuracy (alignment) of the contactor.

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