Steel Slag Processing at Llanwern Steel Works

28th July 2004

Llanwern Steel Works, a Tarmac Western Ltd operation at Newport, South Wales has recently purchased a GIPO Combi RC MG 2400 FDR mobile combination VSI crusher and screen complete with a recirculation system.

Supplied by Aggregate, Processing and Recycling of Tamworth this is a completely new machine to the UK. The machine combines GIPO and Magotteaux technology and is involved in processing steel slag into single size aggregates.

Currently working alongside six other GIPO machines within Tarmac Western Ltd this mobile combination unit has a high specification which provides pre-screen and stockpiling facility for scalping; a feed conveyor provides material to the Magotteaux Mag 2400 Vertical Shaft Impactor which is driven by a variable speed hydraulic drive. A conveyor then feeds material to a two-deck, 5m x 2m final screen. An oversize return conveyor feeds any oversize material back to the crusher, middle and bottom sizes are both then conveyed to separate stockpiles.

The Magotteaux VSI accepts a large feed size that is not normally associated with a VSI, the slag is fed through a carefully selected impeller table and anvil set-up to maximum single size production that can be obtained with a lower dust production than normal VSI machines. The unique combination of impeller, open rotor and ceramic wear parts allow very high reduction ratios and the best possible product shape with low wear costs.

The mobile combination RC MG 2400 unit has a substantial throughput of 350tph+ and is driven by a Caterpillar 430 kw C15 engine, and has a Rexroth variable speed drive to all components.


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