Latest trends in clinker cooling

(Source/Quelle: OneStone)

1 Development of the cooler generations

(Source/Quelle: OneStone)

(Source/Quelle: (Claudius Peters)

2 2^nd generation clinker cooler

(Source/Quelle: (Claudius Peters)

(Source/Quelle: IKN)

3 Erection of a Pendulum Cooler

(Source/Quelle: IKN)

(Source/Quelle: FLSmidth)

4 Cross-Bar clinker cooler

(Source/Quelle: FLSmidth)

(Source/Quelle: Polysius)

5 Conveying system in the Polytrack cooler

(Source/Quelle: Polysius)

(Source/Quelle: CemProTec)

6 RDC clinker cooler

(Source/Quelle: CemProTec)

(Source/Quelle: FLSmidth)

7 ABC static inlet grate

(Source/Quelle: FLSmidth)

(Source/Quelle: OneStone)

8 Cooler efficiency as a function of the bed height

(Source/Quelle: OneStone)

9 Retention times in a clinker cooler

(Source/Quelle: OneStone)

(Source/Quelle: Thermoteknix)

10 Kiln measurements with the Thermascope SLK

(Source/Quelle: Thermoteknix)

(Source/Quelle: VDZ)

11 Design parameters for clinker production plants

(Source/Quelle: VDZ)

12 Combustion and cooler vent air volumes

(Source/Quelle: VDZ)

(Source/Quelle: VDZ, OneStone)

13 Effects on the cooler efficiency

(Source/Quelle: VDZ, OneStone)

(Source/Quelle: IKN)

14 Pendulum Cooler at UCC/Saudi Arabia

(Source/Quelle: IKN)

(Source/Quelle: Claudius Peters)

15 Eta cooler at Twiga Cement/Tanzania

(Source/Quelle: Claudius Peters)

(Source/Quelle: FLSmidth)

16 Cross Bar cooler in China

(Source/Quelle: FLSmidth)

(Source/Quelle: KHD)

17 Pyrofloor cooler at Kotpuli cement factory/India

(Source/Quelle: KHD)

(Source/Quelle: Polysius)

18 ADC aeration flap

(Source/Quelle: Polysius)

19 Troughed grate plates

(Source/Quelle: Polysius)

(Source/Quelle: OneStone)

20 Market shares for new coolers 2007–2008 [12]

(Source/Quelle: OneStone)

(Source/Quelle: Claudius Peters)

Combi-cooler

(Source/Quelle: Claudius Peters)

21 4^th generation cooler from TCDRI

22 Market shares for cooler conversions 2007–2008 [12]

Summary: In the course of the rapid cooler development in recent years, new generations of grate coolers have come onto the market. In fact, it has meanwhile become difficult to keep track of the current cooler generation. However, despite the new market introductions, no great improvements have been made with regard to cooler efficiency and the cooling principle. This report provides an overview of the main equipment developments of recent years and relates them to the process technological background. It discusses the important parameters determining the efficiency of a clinker cooler and shows how the solutions and market shares of the individual plant engineers differ.

1 Introduction

When cooler vendors bring a modified grate cooler onto the market, they like to present it as a new cooler generation. Customers generally see a new cooler generation in connection with fundamental improvements in process technological and mechanical upgrades. So how far are these customer expectations met by the characteristics and operating results of new coolers? Figure 1 shows the grate cooler generations introduced so far. This only takes account of developments that represent a decisive advancement of existing systems. The first grate cooler generation was introduced by...