Reducing noise in gravel chutes
The problem
A major noise source in quarrying and mineral workings is from materials dropping onto steel chutes or into hoppers. One sand and gravel company was faced with both high noise levels and a high plant wear rate on chutes at the end of a screening plant.
The solution
The chute was lined with a 25 mm thick, abrasion-resistant rubber. The material was attached to the steel surfaces of the chute using bolts and large diameter washers.
The cost
About £2300. (1995)
The result
A noise reduction of 10 dB. Wear rates of the chute components were also reduced.
Source
Information supplied by Trellex Limited.