Aleastur offers a wide range of sand opening according to customer demands and processing. Opening the sands offer a low sintering during use as sealing material in steel sliding gates spoons. Your goal is to get the spontaneous opening of the bucket without oxygen or mechanical operations. Forced openings involve risk situations operators and quality degradation steel.

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Typical compositions

The main goal is to achieve a higher level of free opening performance due to forced openings can generate personal accident, production losses and non-clean steel quality.

JSM-4 JSM-21 JSM-22
Cr2 O3 26-32% 32-38  18-25%
 Si O2 34-40% 20-26  30-40%
 Fe2 O3 12-18% 18-24 10-15%
Al2O3 6-11% 10-20 4-9%
MgO 3-8% 5-8 3-6%
ZrO2 18-24%
Na2O+K2O 0-0.1 0-0.1 0-0.1
C 0-1% 0-1% 0-1%
Density 1,5-2.5 g/cm3 1,6-2.6 g/cm3 1,6-2.6 g/cm3
Grain size 0-1.5 mm 0-1.5 mm 0-1.5 mm