Refractory Castables for Chemical Hazardous Waste Incinerators

The incinerator requires stable and uniform structure, performance, and quality of refractory castables to avoid the concentration of impurities. Most incinerators use high alumina wear-resistant castables. In the wear-resistant castables used in garbage incinerators, the introduction of homogeneous materials not only reduces the apparent porosity of the material, improves its strength and wear resistance, but also enhances its resistance to fly ash erosion and penetration, extending the service life of wear-resistant castables in key parts of the incinerator and ensuring its stable operation.
Refractory castables for hazardous waste incinerators include: special grade high alumina alumina, corundum, alumina micro powder, kyanite, silica micro powder, zircon powder, dispersants, water reducers, retarders, explosion-proof agents, and binders. By adjusting the flowability of the material with alumina ultrafine powder and silica ultrafine powder, the material can be densified, the porosity can be reduced, and the construction requirements can be met. It has the characteristics of low porosity, low water absorption, high bulk density, and high uniformity.
With the development trend of large-scale incinerators, the technical characteristics of wear-resistant castables for incinerators are as follows:
(1) High strength and good wear resistance. To resist the wear of solid materials and the erosion of hot air flow;
(2) Good volume stability and acid resistance. To resist the erosion of acidic substances inside the furnace:
(3) Good thermal shock stability. To resist the damage of materials caused by changes in furnace temperature:
(4) Good resistance to CO erosion. To avoid furnace lining cracking caused by CO erosion