Selection of suitable Deflocculants for Microsilica-Containing ultra low-cement Al2O3–SiC castables

In this research, the effect of seven deflocculants including sodium tripolyphosphate, sodium hexametaphosphate, RHEOBUILD, DARVAN 811D, GLENIUM and CASTAMENT FS20, on rheology behavior of Microsilica-Containing ultra low-cement Al2O3–SiC vibrationcastables, has been investigated. The behavior of various deflocculants in this castables was evaluated in terms of flowability and workability characteristics. It was concluded that GLENIUM is the best deflocculants for ultra low cement castables in Al2O3-SiC system, which itself gives simultaneous good flowability and workability at optimum content of 0.12 wt%. Therefore, with these results, a commercial deflocculant with the name of GLENIUM with better rheology properties was introduced to world refractory industrials.