Global Cement News

Zimbabwe: Germany-based Gebr. Pfeiffer says that a new MVR 3070 C-4 mill for cement grinding is due to be commissioned at Holcim Zimbabwe’s integrated plant at Manresa near Harare. The order was handled by the Chinese contractor CBMI.

The roof at the plant collapsed over a cement mill in October 2021 leading to a reduction in production volumes at the plant. The mills were restarted in February 2022 but one of the one of the existing cement ball mills was decommissioned. This mill is being replaced by the new vertical roller mill supplied by Gebr. Pfeiffer. It is expected to double the plant’s cement production capacity after it is commissioned in the second quarter of 2022.

US: Buzzi Unicem USA plans to switch from producing Ordinary Portland Cement (OPC) to Portland Limestone Cement (PLC) at all of its plants by the end of 2022. It said that it intends to transition from traditional ASTM C150 type I and II (OPC) cements in favour of ASTM C595 type IL cement (PLC). So far its Cape Girardeau and Festus plants in Missouri, Greencastle plant in Indiana, Maryneal plant in Texas and Pryor plant in Oklahoma have already completed the move to the PLC. The San Antonio plant in Texas will complete its transition in June 2022, the Chattanooga plant in Tennessee will switch its product line by September 2022 and the Stockertown cement plant in Pennsylvania will complete its conversion later in 2022. The company added that its engineers will continue working to increase the limestone content in cement by up to the permitted 15% and develop High Early Limestone cement, along with other new cement products with reduced clinker content.

Germany: Cemex has inaugurated the Carbon Neutral Alliance at its integrated Rüdersdorf cement plant. The initiative is intended to accelerate the development of the site into the world’s first carbon-neutral cement facility by 2030. Jörg Steinbach, Brandenburg’s Minister of the Economy, Fernando A Gonzalez, the chief executive officer of Cemex, the Mexican ambassador to Germany and representatives from Sasol attended the event.

The Carbon Neutral Alliance comprises a network of over 20 private and public organisations, dedicated to industrial decarbonisation. Among the technologies being introduced at Rüdersdorf include a waste heat recovery project scheduled for the summer of 2022, the development of renewable energy generation and a scheme to produce aviation fuel onsite in coordination with Sasol and Enertrag.

In 2020 Cemex announced its decarbonisation target of reducing its CO₂ emissions by 40% by 2030 compared to 1990 levels. This target is expected to be achieved in Europe in 2022. By 2030, Cemex intends to reduce emissions at its European sites by 55%, in line with European Union's new strategy to reduce CO₂ emissions. Cemex has also announced its goal to achieve net-zero carbon emissions in concrete by 2050.

Austria/Canada: Canada-based Solex Thermal Science has been selected by Austria-based Cemtec for a mineral cooling project based in Central Europe. As part of the agreement, Solex will deliver a customised plate-based moving bed heat exchanger (MBHE) that will be used to indirectly cool a milled, mineral-based powder that’s similar to cement. The unit is expected to be delivered by the summer of 2022.

Solex says that the use of a welded plate-channel design allows the powder to flow by gravity within a vertically orientated exchanger and between banks of stainless-steel plates. A heat transfer fluid passes within the plates to cool the material by conduction. The use of indirect heat transfer technology, combined with customised plate spacing, provides the necessary residence time to eliminate caking within the unit while also ensuring consistent temperature profiles at the outlet.

“We are excited to bring our decades of thermal engineering experience to this collaboration with Cemtec,” said Gerald Marinitsch, Global Director, Industrials for Solex Thermal Science. “We are confident that our MBHE technology will provide a reliable, real-world solution to this unique and important cooling application.”

Cemtec is a specialist in providing wet and dry grinding technologies for many types of bulk materials and minerals including the cement sector. Solex Thermal Science develops indirect heat exchange technology for the heating, cooling and drying of free-flowing granular materials such as solid granules, pellets, beans, seeds and particles.

India: Jindal Group has signed a memorandum of understanding with the state government of Chhattisgarh for the establishment of its planned Raigarh cement plant. The Times of India newspaper has reported that the plant will have an integrated capacity of 2.5Mt/yr, in addition to a further 2.5Mt/yr in clinker capacity. It will also operate a 12MW waste heat recovery (WHR) plant.