International Cement Review articles tagged under : Tech Forum

16 October 2017 Dr Michael Clark

Aspirating the kiln

Last month’s Technical Forum concluded with the following closing comments: “A sufficient supply of oxygen to the kiln is critical. Any limitations on the drawing of oxygen into the kiln or exhausting the gases from the kiln are also a common cause of such problems.” Therefore, this month’s Technical Forum considers the need for aspiration to help increase oxygen supply to the kiln and improve...

14 August 2017 Dr Michael Clark

Benchmarking revisited

Recent years have seen growth in the take-up of benchmarking services provided by Whitehopleman. Some cement plants have participated every year since the service was launched 19 years ago. Benchmarking reports have ...

10 July 2017 Dr Michael Clark

The blending menu

Blended cement is the focus of this month’s Technical Forum, namely the complexities of understanding its classification and labelling under the European EN 197 system. The moderator also takes a look at the reasons ...

19 June 2017 Dr Michael Clark

Capex vs opex

In the last year the moderator has been reviewing numerous existing cement facilities and proposals for new cement plants or production lines. In this process, compromises have to be made between the conflicting obje...

Vertical roller mill optimisation 10 April 2017

Vertical roller mill optimisation

Dr Michael Clark returns from Cemtech MEA's workshop with vertical roller mill optimisation becoming a common concern for local cement producers.

27 March 2017 Dr Michael Clark

Impact of alternative fuels

Dr Clark assesses the impact that burning alternative fuels has on kiln productivity and thermal energy efficiency.

Kiln emissions – more than just hot air 14 February 2017 Dr Michael Clark

Kiln emissions – more than just hot air

In last month’s Technical Forum we promised to return to the topic of cement kiln emissions, which were said to be both simple and complex, benign and noxious. The challenge is to see the broad simplicity, which then...

04 January 2017 Dr Michael Clark

Optimising a dynamic process

The cement production process is dynamic, with substantial opportunities for optimisation, improving plant productivity as well as profitability. Cemtech Technical Workshops are an important way of disseminating this...

07 December 2016 Dr Michael Clark

Who is responsible for what?

Dr Michael Clark investigates the need for human resources to be supportive in developing a responsible and well-managed cement plant.

07 November 2016 Dr Michael Clark

Coal classification

Dr Michael Clark explains how coal evaluation is important for accurate thermal energy consumption estimates of kilns.

24 October 2016 Dr Michael Clark

Biomass matters

Dr Michael Clark reveals why assessing the 'carbon neutral' basis if biomass is important and how carbon-14 analysis works.

27 September 2016 Dr Michael Clark

How do blending beds stack up?

Dr Michael Clark reviews the effectiveness of stacker/reclaimer systems in providing more uniform and blended raw materials.

26 August 2016 Dr Michael Clark

It's all about the costs

Dr Michael Clark reminds everyone that cement plants are there to make profits and explains the role of benchmarking to minimise costs.

11 April 2016 Dr Michael Clark

A self-cleaning process

In this Technical Forum Dr Michael Clark assesses what progress is being made to have a continuous self-cleaning cement kiln process.

13 April 2016 Dr Michael Clark

Red rivers of segregation

Dr Michael Clark ponders segregation and the unwated formation of red rivers in the clinker cooler.

20 January 2016 Dr Michael Clark

Workshops, NESHAP and optimisation

Dr Michael Clark summarises discussions at Cemtech Americas’ Technical Workshop and looks ahead to Dubai.