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December 2012

The last issue of 2012 focuses on comminution, covering topics such as VRMs, wear resistance, drives and gears, as well as case studies on improving grinding efficiency. December’s regional report discusses the cement industry in the emerging markets, with an overview of the construction and opening of a new 1 million tpa plant in Turkmenistan. In addition, the issue includes articles about the potential use of solar energy in Turkey and how local water shortages were overcome in India.

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Product News

5 Facts On...

Full Circuit Solution
Qianqian Wang, Lin Gao and Xueming Wang, CNBM (Hefei) Powder Technology Equipment Co., Ltd, China, introduce the concept of roller press hybrid grinding systems utilising V-separators.

Cement Grinding Efficiency
In an excerpt from ‘Finish Milling and Grinding’ in Innovations in Portland Cement Manufacturing, Earl Smith and Mike Sumner discuss cement grinding, mill circuit performance and separator efficiency.

Negative Damping Phenomenon in VRMs
Maziyar N. Zadeh, Claus L. Olesen and Niels O. Cedergaard, FLSmidth A/S Global Product Development, and Sergey V. Sorokin, Department of Mechanical and Manufacturing Engineering, Aalborg University, Denmark, present their research into the dynamics of VRMs.

Standard Thinking
Douglas Phares, Manish Verma, Bill Horvath and Nathan Rodgers, TMEIC, USA, compare the international and North American standards for large adjustable speed drives.

A Longer Lifetime
Michele Renai, Fonderia Gelli, Italy, addresses the issue of rapid wear in tube mill first chambers and discusses the application of a new alloy being used in cement mill wear plates.

Maintaining Excellence
Gabriele Teutrine, Teutrine, Germany, presents a case study of a girth gear reversal.

Controlled Grinding
Brent Jones, TMGE (TMEIC Corporation), USA, evaluates the effectiveness of different grinding control systems.

Enhancing Grinding in Haiti
Jaime Caicedo and Elkin Rodriguez, CINA Haiti – Cementos Argos, discuss a cement grinding optimisation project at Cimenterie Nationale.

Beyond BRICS
Imran Akram, contributing author, IA Cement Ltd, provides an overview of the cement sectors in the emerging markets.

Jebel: Doubling Turkmen Cement Production
Adnan Habes, Mechanical Group Manager, Polimeks, Turkey, talks us through the construction and opening of Turkmenistan’s second 1 million tpa plant.

Worth its Salt
Milind Kothari, Sanghi Industries Limited, India, talks about how the company has faced the challenges presented by local water shortages.

Tapping the Sun’s Potential
Mahmut C. Selekoglu, Adana Cement Inc., Turkey, discusses a new solar energy project to generate electricity at the plant.

High Sulfur Petcoke
V.K. Jain, A.K. Singh, K. Suresh and S.P. Pandey, UltraTech Cement Ltd, India, and A.K. Chatterjee, Conmat Technology Pvt. Ltd, India, report on the firing of high-sulfur petcoke and its effect on the the sulfatisation of plant clinkers and consequent cement hydration.

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