What Is Kiln Furniture?
Kiln furniture, which is made of refractory soil, plays a role in spacing, supporting, supporting and protecting the blanks during the roasting process. [1]
- The space-type kiln furniture was originally pill-shaped, also known as "supporting beads". It was kneaded with white refractory soil containing more alumina. This type of space-based kiln furniture is mostly found in the Long Kiln ruins of the Spring and Autumn and Warring States Period in Shaoxing and Xiaoshan Found usually used for primitive
- (1) First of all, it should have good thermal shock resistance and normal temperature and high temperature machine maple performance.
- (2) Kiln furniture should have good thermal conductivity and air permeability.
- (3) The kiln furniture should have a higher load softening temperature and fire resistance, and its load softening temperature is required to be 50 ~ 100 ° C higher than the firing temperature of the fired product.
- (4) Kiln furniture should be small in weight, low in heat storage, accurate in size and good in regularity [3]
- Clay-clinker, which is composed of clay and clinker (waste box, waste clay, etc.) can be used at about 1300 ° C; high alumina, with alumina content of more than 46%, used at less than 1450 ° C Mullite, the main crystal phase is mullite, composed of 10% kaolin and 90% synthetic mullite, used at 1400 ~ 1500 , and high strength; ocherite-mullite, bluestone and Mullite is the main crystalline phase and the use temperature is below 1310 ; silicon carbide and recrystallized silicon carbide and silicon carbide are characterized by excellent thermal shock resistance and high strength, and the use temperature is lower than 1400 ; heavy The crystalline silicon carbide has a short-term use temperature of 1650 ; the long-term use temperature of the "silicon carbide-bonded silicon nitride" refractory formed when silicon carbide uses silicon nitride as a binder can be as high as 1550 [3]