Reuse Of Red Powder Of Steel Plants As Fine
Addition In Ceramic Bricks Manufacture
Author(s)
N. Quaranta, M. Caligaris, H. López, M. Unsen, G. Pelozo,
J. Pasquini & A. Cristóbal
Abstract
The recycling of industrial wastes as raw material for the construction industry
emerges as a viable solution to the increasingly serious problem of their
accumulation, due to increasing production. This recycling process involves
significant environmental benefits: the use of wastes, energy economy and the
conservation of nonrenewable resources.
In this paper waste from a steel plant, called red powder or Ruthner powder,
is studied, in order to determine its environmental suitability for reuse as fine
aggregate in mixtures for the production of clay bricks. This waste is produced in
the steel industry after the hot rolling process; the plate is covered with a layer of
oxides which is removed in a pickling process, obtaining as a byproduct of the
process Fe2O3 (red powder).
These powders are mixed with clay up to 50%, pressed and heat treated in
the range 950°C-1000°C.
Ceramic compacts thus obtained are characterized by several techniques
for determining the suitability for using them, taking into account the
commercial requirements of such materials. These products have good
physical and mechanical properties, with values of porosity, mechanical
strength, volumetric changes and permanent weight loss within the market
requirements.
Keywords: metallurgical wastes, recycle, red powder, ceramics.
Keywords
metallurgical wastes, recycle, red powder, ceramics.
Related Book
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