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]