Cement News tagged under: Tech Forum
Belite in Portland clinker22 July 2019, Published under Cement NewsWhile belite is often represented as a pure dicalcium silicate, in practice the phase contains a range of impurities. Arthur Harrisson highlights the differences in belite composition and examines the causes of such impurities. Type I belite crystals with dark laminations containing exsolved matter The belite phase in Portland cement clinker is often characterised as dicalcium silicate or C 2 S, implying a lime-to-silica ratio of 2:1. The ratio refers to the number of CaO units ... |
Solar to the rescue02 July 2019, Published under Cement NewsDr Clark looks at how concentrated solar energy could help the cement industry move closer to carbon neutrality. Furthermore, the latest solar technology could make other carbon-reduction strategies more viable. Concentrated solar energy could make carbon capture and storage more economically viable All readers will be well aware of the CO 2 emissions challenge currently facing the cement industry. The share of man-made CO 2 emissions created by the cement industry is often qu... |
Using plant cost profiles16 May 2019, Published under Cement NewsAs in January 2018, Dr Michael Clark has once more spent most of the last month developing manufacturing cost profiles for cement factories in different geographies across the globe. This time, Dr Clark considers how these profiles may be used to provide a competitive advantage. Holcim established its facility in Ste Genevieve, Missouri, USA, benefiting from the low distribution costs due to its convenient location on the Mississippi River Regular readers of the Technical For... |
The finishing lime18 February 2019, Published under Cement NewsIn this month’s Technical Forum, Dr Clark examines the conditions and complications under which raw materials compete for the available lime during the production of clinker. During the production of clinker, raw materials join a competition for available lime In the Technical Forum, Cemtech Workshops and CemNet Online Training we are always trying to improve understanding of the technology of the cement manufacturing process. At the heart of that process is the combination o... |
Evaluating an EPC project30 January 2019, Published under Cement NewsIn this month’s Technical Forum, Dr Michael Clark looks at the essential factors that cement producers must take into account when choosing the right contractor for a potential EPC project. Time to completion is an important factor to consider, as it will impact the net present value At the beginning of each year, ICR provides an update on new cement capacity projects around the world. Capacity development projects are an infrequent and possibly unique event for a cement company... |
Mitigating acid gas emissions11 December 2018, Published under Cement NewsIn this month’s Technical Forum, Dr Michael Clark examines acid gas emissions from cement kilns. Understanding harmful acid gas emissions, such as hydrogen chloride, is required before investing in mitigation strategies. Before investing in new raw material quarries, a better understanding of acid gas emissions is required Emissions from cement kilns are a growing focus of environmental authorities around the world. This month’s Technical Forum will look at the causes and mitiga... |
Mitigating acid gas emissions11 December 2018, Published under Cement NewsIn this month’s Technical Forum, Dr Michael Clark examines acid gas emissions from cement kilns. Understanding harmful acid gas emissions, such as hydrogen chloride, is required before investing in mitigation strategies. Before investing in new raw material quarries, a better understanding of acid gas emissions is required Emissions from cement kilns are a growing focus of environmental authorities around the world. This month’s Technical Forum will look at the causes and mitiga... |
Electrical opportunities22 October 2018, Published under Cement NewsIn this month’s Technical Forum, Dr Michael Clark examines the importance of a stable and reliable electricity supply. As one of the leading expenses of cement plant operation, it is essential to understand how electricity use can be optimised. The public utility electricity grid provides optimisation opportunities for cement producers No cement factory can operate efficiently without a stable and reliable electricity supply. The massive heat capacity in a cement kiln means that... |
Benchmarks for the finish line12 September 2018, Published under Cement NewsFollowing Hans-Jorgen Nielsen’s “Ceramic Strengths” article in ICR’s June issue, Dr Michael Clark examines the potential energy-saving differences between milling systems used for cement finish grinding. Using ceramic grinding media in ball mills results in overall energy savings ICR June had an interesting article on “Ceramic strengths” by Hans-Jorgen Nielsen of LNV Technology PvT Ltd (Sinoma). The article looked at how unit electricity consumption in cement finish grinding wi... |
2048 predicted04 July 2018, Published under Cement NewsThe 30th anniversary of the first publication of International Cement Review (ICR) in July 1988 has arrived. While last month’s Technical Forum considered the major changes in the world cement industry over the past 30 years of ICR, this issue will look at what changes might be anticipated over the next 30 years. There is no alternative to cement for constructing the world’s required infrastructure Last month’s review of the last 30 years of ICR was based around three threads. T... |