Classification of lightweight refractories of heat insulation
Lightweight refractories refer to refractory materials with low thermal conductivity and low heat capacity, also known as thermal insulation refractories. Lightweight refractories generally have a relatively high porosity and low bulk density, and are usually also referred to as insulating refractories. The closer the light refractory material is to the working surface, the better its thermal insulation effect. According to the different chemical mineral composition, lightweight refractories can be divided into alumina lightweight refractory materials, high alumina lightweight refractories, mullite lightweight refractories, siliceous lightweight refractories, and clay lightweight refractories Materials , vermiculite lightweight refractories and diatomite lightweight refractories; According to the use temperature, lightweight refractories can be divided into low-temperature lightweight refractories (use temperature <600℃), medium-temperature lightweight refractor...