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Manufacturing Sand for Concrete from Trap Rock in the USA

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Manufacturing Sand for Concrete from Trap Rock in the USA

June 15, 2023 nflg 0 Comments

A universal increase in demand for a wide range of aggregate and sand products has resulted in a trend towards bigger and better crushing plants.

Today, quarry operators must have the ability to produce aggregate for a wide range of applications, which essentially require very different types of product in terms of shape and gradation.

Case Study

A quarry operator in the USA needed to expand their crushing and screening plant in order to cope with an increase in chip and sand demand. Minus 12.7mm chip, designated NC 78, is produced for two nearby asphalt plants and the sand was manufactured for use in concrete.


The company already operated a Barmac Rotopactor at another plant and, as a result of the success of this machine, they decided to purchase a Barmac B9600 VSI crusher. Operated in closed circuit, feed to the Barmac is cone crusher product which has been wet
screened. Therefore, the machine’s ability to cope with wet, sticky feeds is a crucial factor in this wet crushing circuit.

Benefits and Advantages

Despite the trap rock being very hard, with a medium abrasion index, the product cost per ton is around just US$0.028 in Barmac consumable metal parts.


This plant expansion, incorporating the Barmac crusher, has given the operator the ability to diversify the range of products and improve the quality of the asphalt chip and manufactured sand.

Major Benefits to the Manufactured Sand Indust

The Barmac VSI crusher uses a unique rock-on-rock crushing process. As the material fed into the Barmac impacts and grinds against itself, the typical wear cost per tonne of material processed is very low.

Due to operational variables, such as cascade control, rotor speed and rotor design, the Barmac offers a versatile solution to crushing and shaping applications.

Barmac VSI crushers are also used in the industrial minerals, mining , recycling and general quarrying industries. A wide range of materials are processed through Barmac crushers worldwide. For more information on this or any other Barmac application, please contact your nearest Barmac representative.

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