Remove more water from coal with our Coarse Coal Centrifuges

It’s vital as much water is removed from your coal feed as possible to avoid contract penalties, reduce transportation and storage costs, reduce safety risks, increase thermal efficiency and, as a result, improve your bottom line. Our Coarse Coal Centrifuge range are horizontal vibrating-basket style machines that use centrifugal force to separate surface water from coal.

They can treat material from -50mm to +0.5mm. They can also decrease feed moisture down from 18–25% to produce surface moisture of the product to be as low as 2–9%, depending on the particle size distribution of feed material and coal type.

With six different models, including the world’s largest capacity Coarse Coal Centrifuge, there’s sure to be one to suit your operations:

• VM600 – 20 tonnes per hour with a 600mm basket.

• VM1100 – 150 tonnes per hour with a 1100mm basket.

• VM1300 – 250 tonnes per hour with a 1300mm basket.

• VM1400 – 300 tonnes per hour with a 1400mm basket.

• VM1500 – 350 tonnes per hour with a 1500mm basket.

• VM1650 – 410 tonnes per hour with a 1650mm basket.

Once coal has been separated and cleaned, it’s important that it’s sufficiently dewatered before stockpiling or despatch. The easily removed water is firstly removed by a drainage screen and the screen discharge is sent into the feed chute of the centrifuge.

The Coarse Coal Centrifuge can accept feed from a range of sources including a dense medium cyclone product screen, sievebend and static screen. The centrifuge is equipped with a slightly conical screen basket, which is open at the larger diameter. The basket rotates around its horizontal axis and, at the same time, dual external counter rotating vibration motors produce a highly controlled rapid vibration stroke in the basket.

The feed is pressed to the inner side of the basket by centrifugal force and the vibration stroke moves the solids a small distance down the basket with each pulse, until they finally discharge as dry product. During this process, surface water is removed from the particles and forced through apertures in the basket. The Coarse Coal Centrifuges are largely used on coal mines, but their diversity and adaptability also mean they can dewater a range of other products including salt, granulated slag and fertiliser.