The grit nozzle is sprayed or rope-shaped. Under normal circumstances, the aggregate crushing value conclusion grit is discharged in an umbrella shape. 

The grit angle is between 10°-20°, and the concentration reaches about 75%, which is ideal for aggregate crushing value conclusion. 

If the grit nozzle is spray-like, the spreading angle of grit is too large, indicating that the size of the grit nozzle is too large. 

If the grit nozzle is in a rope shape, it may be because the concentration of the ore feed is too high, the size of the grit nozzle is too small, the grit nozzle is partially blocked or the slurry density is too low. When the grit nozzle is spray-like, it can be adjusted by replacing the small grit nozzle.