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METHOD:PUBLISH
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ORGANIZER;CN='8th ECIC & 9th ICSTI 2022':MAILTO:info@ecic-icsti.com
LOCATION:Room „Focke Wulf“
SUMMARY:New approaches towards green and nanoscale binders for blast furnace refractories
DESCRIPTION:In recent years, nanoscaled materials have gathered significant importance in the production of refractory castables and gunning/shotcreting products. The reason for this trend lies in the reduction of the refractory microstructure down to the nanometre range and an associated significant improvement in the physical and mechanical parameters.
The main objectives for nanomaterial applications are to improve compressive strength, tensile strength, elasticity, resistance to thermal shock, abrasion, chemical corrosion and a favourable ratio of strength to Young’s modulus. Moreover, along with better performance nanoscaled binders make shorter turnaround times and thus reduce energy consumptions feasible.
In this paper, we report on the progress made in the development of colloidal silica-based sol-gel refractories for the blast furnace hearth, the main and tilting runner. These nanobonded refractories can be applied via casting, dry gunning and shotcreting. Sol-gel refractories are often associated with low green strength after demoulding and preshapes are susceptible to cracking at the shop floor stage. 
Technological approaches to work with precast and shotcreted sol-gel bonded refractories will be presented. Furthermore, different developments to overcome some of the challenges that occur while handling sol-gel bonded refractories are presented. 

CLASS:PUBLIC
DTSTART:20220631T092000
DTEND:20220631T094500
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