The relationship between the loss of grinding balls in ball milling and the amount of returned sand.

Release time：2025-05-08

The relationship between the loss of grinding balls in ball milling and the amount of returned sand.

1. Excessive backwashing (> 300%), continuous circulation and impact of coarse particles, accelerated fatigue spalling on the surface of grinding balls, increased ineffective grinding in the mill, and a sharp increase in grinding balls wear.

2. The optimal sand reverse amount (150-250%), the grinding balls form a reasonable gradation, the grinding efficiency is maximized, the wear rate of the grinding balls is the most stable, and the comprehensive benefits are the best.

3. The amount of reverse sand is insufficient (< 100%), the proportion of newly fed ore is too high, and the impact load on the steel balls is uneven, which instead aggravates local wear.

15 years of experience in grinding ball production tells us that the amount of backflow is an invisible killer affecting the loss of grinding balls. Precisely controlling the amount of backflow can reduce the cost of grinding balls.