US: Lehigh Cement Company, part of Heidelbergcement Group, has ordered a semi-mobile limestone crushing plant from Hazemag for its Union Bridge cement plant.
The plant will process up to 2500t/hour of limestone with a feed size of up to 2000mm. The material is discharged by means of a Hazemag apron feeder HAF 25160 from a 400t feed hopper. The fines in the feed material are screened at 100mm on a Hazemag roller screen HRS 2638.
The HAZEMAG primary impact crusher HPI 2230 crushes the material down to D99 < 125mm. The impact crusher is fitted with hydraulically adjustable impact aprons and grinding path that both retract in a controlled manner under excessive load. The system of the retractable grinding path is patented. The impact crusher HPI 2230 is also fitted with the automatic gap width control HAZtronic.