ZIRCONIUM (Showa Denko)

At the current Shiojiri office, Showa Denko started the first production in Japan for brown electrofused alumina in 1934, and white electrofused alumina in 1938. 70 years since, we have been using various high purity materials including alumina from our own Yokohama office, to develop and manufacture a variety of electrofused refractories, applying sophisticated fusion technology and pulverization/granulation technology gained from the manufacture of abrasive material.

Product type Name Code Characteristics Particle size available Chemical composition (wt%) Application example
electrofused mullite
material
Shomullite™ RM High purity
electrofused
mullite
#8F, #8/10, #10/36, #40F,
#80F
Al2O3 : 76.8
SiO2 : 22.8
Fe2O3 : 0.05
Kiln furniture,
Shaped/castable
refractories
electrofused
zirconia
material
Shozirconia™ RZ Stabilized
zirconia
#42/100, #100/200, #200F, #280F, #325F, #3000F ZrO2 : 95.5
Cao : 3.7
SiO2 : 0.2
Continuous casting
submerged nozzle,
Porcelain for sintering
electronic material
(There are also Y2O3 stabilized products)
electrofused
alumina
material
White
Morundum™
RW High purity
electrofused
alumina
#220F, #325F Al2O3 : 99.7
Na2O : 0.3
Shaped/castable
refractories for
metalworking and
ceramic industry
WA JIS particle
size,
low iron
JIS F8-F220 Al2O3 : 99.7
Na2O : 0.2
Special ceramics,
Special shaped/castable
refractories
Bubble
Morundum ™
BW White hollow
sphere
5mmF, 5-3mm, 3mmF Al2O3 : 99.0
SiO2 : 0.2
Na2O : 0.1
For high temperature
flame proofing,
Shaped/castable
refractories
electrofused
spinel
material
Shospinel ™ FAM High purity
electrofused
spinel
8-5mm, 5-3mm, 3-1mm,
1mmF, # 100F
Al2O3 : 72.5
MgO : 26.0
Refractories for special refin

* Please contact us for the particle sizes available