The Lafarge Africa Mfamosing cement plant is a 5Mt/yr integrated facility in Cross River State, Nigeria. It is the largest within Lafarge Africa, the LafargeHolcim subsidiary that operates in Nigeria and South Africa. For clinker grinding the plant has two large ball mills and a vertical roller mill (VRM), a 400t/hr LM 70.4.4 supplied by Germany's Loesche. The plant was commissioned in 2017. After four years of operation the process bag house filter fan (Power = 4000kW, Air flow = 120,000Nm3/hr, Impeller 0 = 3.2m) started to show signs of wear, particularly near the welding joint connected to the centre plate. It became terminally damaged on 8 December 2020. All parts of the impeller were found to be damaged, with the exception of the shaft and centre plate. The fan casing was also 30% damaged.
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