Utilization of blast furnace flue gas by-products in the manufacturing of clay bricks

In the scope of a project, waste materials from steelworks in France, the USA and Italy were analysed and their suitability for utilization in brick plants assessed. Besides increasing the density, the additives influence the fired colour, mostly in the direction of red shades.

1 Introduction

The use of suitable waste materials that do not negatively impact heavy clay product characteristics and public product perception can certainly be considered valuable, environmentally friendly alternatives to traditional raw materials.

It is important that materials should not have any negative effects on the manufacturing cycle, or such effects should be offset by economic advantages. The waste materials should also be available in sufficient quantities.

Such by-products are produced, for example, in the steel making in blast furnaces and used in manufacturing ballast concrete...

Related articles:

Issue 2014-08

Natural fired colours of raw materials for bricks and tiles

The fired colours of heavy clay bodies are largely determined by the employed raw materials, the lighting conditions and the viewer‘s visual perception. The term fired product colour indicates that...

more
Issue 2021-03

Investigations into the potential utilization of waste materials from the quarrying industry in heavy clay ceramic bodies

The goal of the investigations is to test the use of these waste materials in heavy clay bodies and consequently: to reduce the consumption of primary raw materials, to reduce the volume of waste...

more
Issue 2021-03

Kambic series of climate chambers

Kambic climate chambers are suitable for various applications such as long-term or stability tests, calibration laboratories, material test laboratories, material conditioning, or ageing tests....

more
Issue 2018-6

Using funding opportunities with the help of the new KfW energy efficiency scheme “Waste Heat Utilization”

The utilization of waste heat has been established in the clay brick and tile industry for many years, it is common for the waste heat from the kiln to be used to dry green products. This involves...

more
Issue 2015-05 Dipl.-Ing. Eckhard Rimpel

Syngas for sustainable clay brick and roofing tile ­production (Part 2)

6 Influence of the atmosphere on the colours With the naked eye it was not possible to see any differences in the colour of all the products. Most important are the colour differences in roofing...

more