Arthur M. Harrisson Ltd
of Raw Materials
Home Background Limestone Chalk Cement Chemistry Secondary Raw Materials Clinker Microscopy Quality Solutions
The raw materials for cement manufacture form the foundation for the whole of the concrete construction industry.
have direct experience of examination and assessment of raw materials
in the ground before costly quarrying operations are begun.
Before the geologist even visits the site there is a need to examine any maps, borehole logs, borehole
sample records and chemical analyses to determine whether the project
is viable in purely geochemical terms. I can offer an assessment
of data available to provide a first indication as to the
suitability of the proposed quarry materials for cement clinker.
kiln feed requires lime, silica, aluminium oxide and iron oxide.
Conventionally the lime is won from limestone (including chalk), the silica and
aluminium oxide from clay minerals and the iron oxide from clay
with additions of iron rich waste from various industrial
processes. Alternative secondary materials are increasingly being used to minimise the
environmental impact of cement manufacture. These include fly ash
from coal fired power stations, blastfurnace slag and other slags from
metals processing, foundry sands and other wastes from materials based industries.
raw material needs to be investigated as a potential source on its own
and also in the context of the other materials to be used in the
A Harrisson 2011