Cement News tagged under: manufacturing technology
JK's Mangrol expansion15 December 2014, Published under Cement NewsJK Cement Ltd is one of India’s leading cement producers with four domestic grey cement plants and a newly-established presence in the UAE. The company has undertaken an ambitious plan to raise its Indian cement capacity substantially by 2017. The recent completion of its Mangrol brownfield expansion project in the northern Indian state of Rajasthan marks a key step towards this goal. By MP Rawal, D Ravisankar & RK Bajaj, JK Cement Ltd, India. JK Cement's Mangrol expansion project was... |
Sulphate resistance26 November 2014, Published under Cement NewsSulphate resistance is frequently the subject of cement chemistry-related questions. Why do we need to resist sulphate and where? Is there a downside to sulphate-resistant clinker? Bridge piers in estuaries require a cement that is resistant to sulphate attack Sulphate is an essential component of Portland cement but, as with all good things, it must be taken in moderation. Excessive sulphate can lead to catastrophic failure of concrete while a shortage can mean that the concret... |
Asset maintenance06 October 2014, Published under Cement NewsEffective maintenance management plays a key role in operational excellence. Major cement producers such as Lafarge have gained their market position as an result of improving their operations through effective preventative and best-practice asset maintenance programmes. by Ralph Rio, ARC Advisory Group, USA. Lafarge’s grinding mill in Randfontein, South Africa, benefits from the company’s approach to maintenance Within an area or region, raw material and energy costs in the cem... |
Siwertell celebrates 4017 September 2014, Published under Cement NewsAs Sweden-based Siwertell marks its 40th anniversary, Cargotec looks back at changes in cement handling requirements over the four decades since it entered the market and charts key moments in its development. By Cargotec (Siwertell brand), Sweden. Siwertell unloaders have responded successfully to cement market needs with increased handling capacities and environmentally-friendly operation Much has changed in cement handling in the last 40 years and although cement consump... |
Alite hydration with alkalis15 September 2014, Published under Cement NewsThe continued drive to optimise the use of cement in concrete mixes has sparked an interest in the hydration of alite in an alkaline environment. Research has shown that the presence of alkalis such as Na and K during alite hydration results in a higher amount of hydrated products and matrix densification. By Carolina Giraldo Torres, Ariel Berrío, Cementos Argos & Oscar Mendoza Reales, Jorge Iván Tobón, Universidad Nacional de Colombia. R&D at Cementos Argos, Colombia Almost two... |
Oxyfuel: prospects and limits19 August 2014, Published under Cement NewsOxyfuel technology shows promise as a potential future method to help lower CO2 emissions through carbon capture and storage in the cement industry. However, the use of oxyfuel leads to a more complex kiln layout and operation, resulting in higher operating costs. By Dr Kristina Fleiger & Dr Volker Hoenig, VDZ, and Prof Dr Albrecht Wolter, TU Clausthal, Germany. Figure 1: oxyfuel technology offers one method of capturing carbon Over the last two decades, the cement industry has ... |
The promise of carbon capture13 August 2014, Published under Cement NewsAs cement companies consider ways to lower their CO2 emissions, carbon capture is expected to provide a key component of their efforts. While first-generation carbon capture technologies have been around for application in other sectors, the cement industry continues to look for an economical way to capture carbon that is also suitable for use in cement plants worldwide. By Charles Kline & John Kline, Kline Consulting LLC, USA. Figure 1: overview of broad categories of CO2 capture tec... |
Intelligent design05 August 2014, Published under Cement NewsMechanical ship unloaders with screw conveyors can provide a highly-efficient solution to discharge cement from ships. The technology offers benefits such as low energy consumption and maintenance as well as a dust-free unloading operation. Materials handling specialist IBAU Hamburg shares its experience in designing road-mobile screw-type ship unloaders. Figure 1: a mechanical ship unloader To carry out their unloading tasks efficiently, road-mobile screw-type ship unloaders ha... |
Mitigating carriage risks28 July 2014, Published under Cement NewsCement is a notoriously-difficult cargo to transport. To ensure cement is transported without any insurance claims, several precautions need to be taken. These range from product loss issues to health and safety considerations. Marine insurer Skuld shares its extensive experience in loss prevention. By Nikita Lulla, Skuld, Hong Kong. Cement cargoes present specific shipping demands due to their hydrophobic nature Cement cargoes, which account for about five per cent of dry bulk ... |
Alite size16 July 2014, Published under Cement NewsThe practical implications following microscopic examination discussed in the April 2013 issue of ICR showed that the interpretation of alite size is not a simple matter. We take a closer look at the relationship between burning conditions, alite crystal size and cement quality. Figure 1: alite crystals averaging 35µm Several factors come into play when considering alite size including flame length and temperature, nucleation, production and kiln conditions, chemical factors, si... |