Plicast Si-Bond SP
Service Temperature Limit
Pulp & Paper, Waste-To-Energy, Incineration, Aluminum, Off Gas
As a primary lining material in high alkali environments (slag or gas) or in contact with moderately basic slags. Applications include:
- Black liquor boilers
- Cement kiln preheaters
- Incinerators and thermal oxidizers
- Biomass furnaces – slag zones
Plicast® Si-Bond SP is a high alumina based, cement less castable, modified with a magnesium aluminate spinel addition. This castable was specifically developed for enhanced resistance to high alkali slags and alkali vapor attacks. In lab alkali slag cup tests versus more traditional high alumina cement bonded castable both with and without spinel additions, Plicast Si-Bond SP consistently:
- Retained slag
- Resisted alkali bursting – all cement bonded castables routinely burst due alkali absorption
These results were confirmed by independent testing at Missouri S&T (Rolla) in a DOE funded project for black liquor gasifiers.
Plicast Si-Bond SP out performed all other commercial castables tested in this project. As a result, there have been very successful commercial applications in black liquor boilers. In addition to its outstanding alkali resistance, Plicast Si-Bond SP also exhibits exceptional hot strength up through 2500°F.