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100 Years Experience

Effective emission reduction when using secondary materials at the Siggenthal cement works in Switzerland (D. Rose, L. Brentrup)

SNCR

The first POLVITEC® activated coke filter to be installed in the cement industry went into operation early in 1994 at the Siggenthal cement works in Switzerland. This activated coke filter was augmented by an SNCR system for reducing the nitrogen oxides formed in the burning process

From issue 3-1995 on most articles are published as German and English versions side by side

Increasing the throughhput of grinding plants by using the CKP system (K. Sekine, K. Sutoh, M. Ichikawa, Chichibu/Japan, I. Hashimoto, S. Sawamura, H. Ueda)

Higher throughput at lower energy costs

Starting in 1985, Chichibu Cement Co. Ltd. and Kawasaki Heavy Industries Ltd jointly developed a process in which a roller mill with a mechanical material discharge system is connected up as a primary mill to an existing tube mill, increasing the throughput and reducing energy consumption.

Pulverized lignite - Properties and safety engineering aspects of its use (E. Wolfrum, E. Scherrer)

Alternative fuels

The importance of having an adequate supply of raw materials with assured future availability has become extremely evident in the recent past

Zement-Kalk-Gips becomes ZKG INTERNATIONAL

Electrostatic precipitators for large rotary cement kilns (K. Arras)

Dedusting solutions

The numerous large installations in the cement industry, with outputs in excess of 3000 t/day, which have been built in the present decade require high throughputs from the electrostatic precipitators too.

(A complete English translation is published in a later issue of ZKG, called Edition B. Previously, English and French summaries accompanied the technical articles)

First operating results of a 3300 tons/day production line with Lepol kiln at the Lägerdorf plant (by O. Hochdahl)

World's largest Lepol kiln

A report on the experience gained over a period of one year in the operation of a 3300 tons/day plant with the world's largest Lepol kiln at the Lägerdorf cement works owned by the Alsen-Breitenburg Zement- und Kalkwerke.

The thermal efficiency of cement raw meal preheaters (B. Vosteen)

Scientific approaches

The three-part article describes the theoretics of preheater technology in the cement industry. Part 1 in 1971 is dedicated to the calculation of the heat balance.

Description and characterization of dicalcium silicate, tricalcium silicate and tricalcium aluminate (I. Weyer)

New insights into structural dimensions

The characterisation of the alite and calcium aluminate phases by x-ray diffraction is refined. Previously, alite was interpreted as a mixture of belite and lime…

„VEREINSBLATT DES VEREINS DER DEUTSCHEN PORTLAND-CEMENTFABRIKANTEN (ASSOCIATION OF GERMAN PORTLAND CEMENT MANUFACTURERS”

FIRST ISSUE

Once the association found a new office there was no argument against having an association bulletin

SETTING OF CEMENT

How the setting of cement is influenced by different kinds of additives, such as alum and soap

TECHNOLOGICAL PROGRESS

A new double hard mill equipped with an air classifier shows new dimensions in fine grinding