Alumina bubble balls

Alumina bubble balls 1.Definition: It is a kind of bubble ball shape bulk refractory material. 2.Highlight: 1). High temperature resistance.2). Low thermal conductive performance.3).Fine thermal insulation performance.4).Light weight.3.Production technology: Electric melting method 4.Property ITEM No.:HXBDX-001 Properties Al2O3 ≥99°C SiO2 ≤0.30% Fe2O3 ≤ 0.15% Refractoriness ≥ 1800°C Bulk density 0.5 - 1.0g/cm3 Crush rate ≤ 15 % Ball Size 0.5 - 5mm 5. Application: As raw material of making the thermal insulating products, or as the thermal insulating layer of the high temperature furnaces with the bulk shape.