FLSMIDTH PFISTER

Production cost saving by using coarse alternative fuels

Faced with rising primary fuel, oil, gas, coal or pet coke prices, as well as challenging market conditions, cement plants around the world are looking for ways to reduce their cement production costs.

1 Introduction

Many cement plants in Europe began burning alternative fuels in the main burner many years ago. Because the fuel must be transported pneumatically into the main burner and the particle residence time in the kiln at the main burner is quite short, the fuel must be fully prepared. Independent of the feeding, a gravimetric dosing device is mandatory and its accuracy should increase with the substitution rate.

2 General challenges in dosing secondary fuels

Compared to other raw materials and primary f­uels, solid alternative fuels tend to be more difficult to handle: material...

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