International Cement Review articles tagged under : Manufacturing Technology

04 July 2019

External circulation technology for VRM raw meal grinding

The pressure differential of a traditional vertical roller mill (VRM) system for raw meal grinding is high, with the fan accounting for about 45 per cent of power consumption. Sinoma International Engineering has developed external circulation VRM technology for raw meal grinding, whereby materials are transported by elevator instead of gas flow, leading to reductions in pressure differential ...

27 June 2019

Countdown for Bardon

As part of LafargeHolcim’s Capital Markets Day in 2018, guests enjoyed a site visit to Europe’s largest aggregates quarry at Bardon Hill, east of Coalville, Leicestershire, UK. Owned by LafargeHolcim subsidiary Aggre...

10 June 2019

The digital quarry

Quarries often give the impression that they have been forgotten in capital investment projects, having bypassed technological changes for several years. However, the quarry is where production starts and here, moder...

06 June 2019 Dr Michael Clark

Processing depth for AFs

In his paper ‘A new approach to burning alternative fuels’, delivered at the Cemtech Europe 2018 conference in Istanbul, Turkey, Oral Turesay of KHD Humboldt Wedag introduced the concept of ‘processing depth’. His th...

Portland cement, lime and alkali-activated binders 15 May 2019 Arthur Harrisson

Portland cement, lime and alkali-activated binders

Following on from last month’s discussion regarding the production of alternatives to Portland cement clinker, Arthur Harrisson takes a closer look at alkali-activated binders. Fly ash needs to be activated to...

29 April 2019

A cooler for the future

To reduce frequent clinker cooler downtime and high clinker temperatures a US cement plant required a new cooler to be installed. As an additional benefit future upgrades would also be easier to carry out. By IKN, Ge...

Digital twins 24 April 2019

Digital twins

Established for some time in industries such as automotive, logistics and even healthcare, digital twins are becoming more widespread. For the cement industry digital twins can also provide benefits as they enable ac...

11 April 2019 Arthur Harrisson

Belite appearance in clinkers

This month Arthur Harrisson looks at the second-most abundant constituent of cement – belite – and its appearance in clinkers. Figure 1: Type I belite with multiple sets of parallel laminations. The blue cryst...

03 April 2019

Modular miracles

Cement producers looking for fast entry into growing small- and medium-sized markets are increasingly looking at employing the light-asset approach. Modular and mobile grinding systems can provide a versatile and cos...

11 March 2019 Arthur Harrisson

Alternative clinkers

The drive to lower the carbon footprint of cement has led to the development of alternative cement clinkers to replace Portland cement clinker. Arthur Harrisson examines the potential of carbon reduction in four alte...

28 February 2019

Admixtures and sustainability

With reducing the environmental impact of cement manufacture high on the agenda for producers, sustainable cement additives based on renewable materials can contribute towards reducing a plant’s carbon footprint and ...

01 March 2019

FCB Horomill® turns 25

This year marks the 25th anniversary of the FCB Horomill ® , a breakthrough technology for raw meal, cement, slag and minerals grinding. Having actively participated in the development of the mill, Buzzi Unicem refle...

20 February 2019

Bearing the load

Due to its inherent characteristics, cement production is one of the most severe processing environments and the bearings employed must be reliable, tough and robust to withstand such harsh operating conditions. By N...

06 February 2019 Arthur Harrisson

Aluminium and iron in clinker

Aluminium and iron are two of the key components in Portland cement clinker. Varying their presence in clinker can have significant effects on the final clinker. Arthur Harrisson looks at some of the impacts of such ...

28 January 2019

The intelligent enterprise

In a commoditised business such as cement, companies are using lean, intelligent processes to enable efficient production and timely delivery. Optimising processes and operations presents an opportunity for producers...

17 January 2019

The ‘magic’ of magnesium

While petcoke is a less expensive fuel option, its use can lead to operational challenges for the cement plant, such as the formation of kiln rings and build-ups in the lower cyclones of the preheater. To optimise co...