Calcined Alumina

Alumina occurs in various crystalline forms. Alumina can be used in several ways and it increases resistance to chemical attack and weathering, impact resistance, tensile strength, hardness, etc.

Role and Advantages of Alumina in Ceramics:

• It improves thermal shock, abrasion and scratch resistance.
• It is one of the most chemically inert oxides.
• It has excellent hardness.
• It is insoluble in water, most inorganic acids and alkalis.
• Improve mechanical and thermal properties.
• It improves dielectric and electrical properties.
• It adds aesthetic values to ceramics

Coarse Alumina (Sandy Type) / Granular: 125 # mesh

100 # mesh size is widely used in making frit for ceramic glazes.

Powder: 300 # Mesh

300 # mesh size powder is very useful in making glazes. Since due to small particle size it improves hardness and final finish of the glaze.

Chemical Specifications: Calcined Alumina

CHEMICAL SPECIFICATION	PRODUCT CODE
	MG 6030	MG 6520	MG 6535	MG 8010	MG 1000
P2O5	0.0012	0.0013	0.0013	0.0016	0.0002
NZ2O	0.345	0.355	0.3775	0.415	0.5
FE2O3	0.043	0.03575	0.04475	0.026	0.015
SIO2	23.842	24.133	16.288	14.546	0.02
ZNO	0.00048	0.00052	0.00052	0.00064	0.0008
CAO	0.051	0.0465	0.057	0.047	0.05
TIO2	0.0624	0.0426	0.0726	0.0232	0.004
V2O5	0.0012	0.0013	0.0013	0.0016	0.002
K2O	0.0312	0.0213	0.0363	0.0116	0.002
GA2O3	0.0072	0.0078	0.0078	0.0096	0.012
MGO	0.015	0.01	0.0175	0.005	0
AL2O3 %	70	75	80	85	98.5
ALPHA %	8	9	10	10	12
LOI (300- 1000 Deg C)	1.5	2	1	1.8	1
MESH + 325	1	1	1	1	1