10 April 2013 – In 2011 PPC, the leading cement supplier in southern Africa, committed to improve its electrical efficiency by 10% and thermal efficiency by 5%, to achieve a 5% reduction in its carbon footprint by 2017.
Since 2003, PPC has been co-processing alternative fuels, and is accelerating this activity by increasing the usage of renewable fuels in the cement process. PPC plans to introduce tyres and other secondary material to reduce coal consumption in many of its kilns.
A new six-stage preheater kiln was commissioned in 2008, at PPC’s Dwaalboom factory – making it one of the most efficient clinker production kilns in South Africa. In 2010, PPC commissioned a new Vertical Roller Mill for cement grinding at its Hercules factory that significantly reduces milling energy costs.
In 2012, the cement giant replaced the electrostatic precipitator (ESP) with a bag filter on De Hoek kiln 6 (DK6), in the Western Cape. The upgrade resulted in DK6’s average water consumption dropping by 60% to 3,100 kl between July 2012 and January 2013. The upgrade has also resulted in other benefits such as reduced dust emissions, better energy performance and an increase in clinker production capacity. This upgrade forms part of PPC’s Western Cape modernisation strategy for its De Hoek and Riebeeck plants.
PPC has also committed to the procurement of at least 10% of its electrical energy from renewable sources. Recently, the Department of Energy awarded a 60 MW wind energy allocation to the Grassridge project in the Eastern Cape. This project, which is on a PPC property, is aligned to a private wind farm development that will produce renewable power exclusively for PPC.