Trends in cement kiln pyroprocessing

1 Kiln line size ­categories Source/Quelle: www.cemfocus.com
2 Development of specific kiln throughputs Source/Quelle: www.cemfocus.com
3 ECC cement factory in Egypt Source/Quelle: Polysius
4 Schematic diagram of a kiln line Source/Quelle: OneStone
5 St. Genevieve ­cement works in the USA Source/Quelle: FLSmidth
6 Preheater system options Source/Quelle: KHD
7 Hotdisc from FLS Source/Quelle: FLSmidth
8 Step Combustor from Polysius Source/Quelle: Polysius
9 Schematic diagram of a multi-stage combustion system Source/Quelle: www.cemfocus.com
10 Heat losses of a kiln line [1] Source/Quelle: www.cemfocus.com
11 Regional distribution of kiln types Source/Quelle: KHD
12 Novaflam burner Source/Quelle: Pillard
PT Semen Gresik, ­Tonasa 5 plant, ­Indonesia Source/Quelle: FLSmidth

Plant engineering companies supplying the cement industry have recently started talking about plants oriented to the needs of the customer. Attributes such as “tailor-made” or “standardized” seem to be a thing of the past.

1 Introduction


In recent years there have been no really new and profound technical developments in kiln technology and none are to be expected in the cement industry in the foreseeable future. Nevertheless, there are a number of trends that have a great influence on purchasing decisions and on current technology standards:

Dry process with preheater and calciner

Most usual plant sizes between 3000–6000 tpd

Specific heat consumptions of < 725 kcal/kg cl ­(5-stage preheater)

Specific electrical energy requirements < 90 kWh/t

Lowest possible emission rates (NOx, SOx, dust, noise)

Automatic plant...

This article appeared in

ZKG 02/2012

This article appeared in

ZKG 02/2012

Ressort:  Markets and Trends
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