Product Description
silicon nitride tube
Silicon nitride (Si3N4) bonded silicon carbide (SiC) material is
produced by adding industrial silicon paste into artificial
aggregate. Under high temperature, Si and N2 reacts with the
formula of 2N2+3Si=Si3N4, Si3N4 bonded Sic material is formed by
bonding SiC particles tightly. Therefore, Si3N4 bonded SiC material
is an excellent refractory with the original properties of SiC. The
material has quite high strength even under the temperature of
1700.C has properties of creep deformation resistance
and anti-chemical erosion, and has excellent thermal conductivity
and wear-resistance. Comparing with other several bonded SiC
materials, Si3N4 bonded SiC material has attracted more and more
attention.
Product Feature
Si3N4 Bonded SiC material
is mainly used in the production of aluminum, copper and zinc , as
the lining material of the molten pool and electrolytic bath
(reduction bath). The side lining of the reduction bath is eroding
by aluminum and cryolite (used as additive), but Si3N4 bonded SiC
material could not be eroded by aluminum, and do not have chemical
reaction with cryolite. So this kind of material is ideal for the
lining bricks of the electrolytic bath. In particular this kind of
bricks have the excellent properties of high strength, abrasive
resistance and nonconductive, so the copolymer (Al2O3 and
Cryolite). The copolymer likes protective film to protect the
working lining and improve the service life of electrolytic bath.
At the same time, the Si3N4 bonded SiC bricks have lower thermal
conductivity than silicon bricks, so they can reduce the thickness
of the side wall or input higher power to expanse the loading
capacity of the electrolytic bath, and to increase the output.
Because of the high resistivity of the material, it can reduce the
power consumption of the side -wall about 15%, saving energy and
protecting environment
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