KLINE CONSULTING

Cement and CO2: What’s happening?

The presented paper won first place at the recent IEEE-IAS/PCA Cement Industry Conference in Washington, DC. This paper is a follow-up to the previous award winning paper “Cement and CO2: A Victim of Success” that was presented at the San Antonio conference in 2012.

1 Introduction

The majority (about 60 %) of the CO2 emitted from a modern cement plant comes from the calcination of limestone. The remainder comes primarily from the fuel combustion required to drive the clinkering reactions in cement manufacture. Table 1 demonstrates a typical CO2 balance for a modern cement plant.

2 Traditional levers

There are three highly publicized, traditional levers for reducing CO2 from conventional cement manufacturing:

Fuel efficiency

Biogenic fuels

Clinker substitution

These have been widely explored and publicized in the media. Table 2 provides an insight into how some...

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