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1.Definition: It is a kind of light weight refractory material with high temperature and energy saving. 2.Features: 1).ISO9001:2000 2). High purity of up 95%. 3).CaO Stablity. 4).High temperature industry from 1600-2400 3.Properties: ITEM No.:HXZBB-001 Properties ZrO2·HfO2 % ≥95 CaO % 3.3-4.0 SiO2 % ≤0.2 Fe2O3 % ≤0.1 Al2O3 % ≤0.2 Max working temperature ≥2200°C Bulk density g/cm3 1.5-2.5 Grain size mm 0.2-5mm Stability 70-80mm 4.Application: It can be used as heat insulation material and casting material under high temperature of 1600 to 2400°C. Also used in high temperature energy saving down-draft kilns, shuttle kilns, tungsten furnace, induction furnace, and so on. Using it, about 40% of energy can be saved obviously.