Foundry sands, also called Calcined Kaolin and Flint clay Packing: 25kg/plastic woven bag or paper complex bag, 1MT bag

Calcined kaolinite (CK) for precision casting is one kind of natural mullite, made of pure material through high temperature at 1,300°C calcined, and suitable for precision casting.The products have been processed by Japanese equipment with special techniques and for excellent foundry data. Its quality can be favorably compared with molochite.Comparisons for kinds of foundry sands:

	CERAMETAL	VALERITE	MOLOCHITE	C.K.
AL2O3	41.00%	43.00%	42.00%	46.06%
SIO2	54.00%	53.00%	56.50%	51.20%
Fe2O3	1.70%	1.30%	1.10%	1.37%
TiO2	1.70%	1.60%	0.07%	1.32%
CaO+MgO	0.60%	0.40%	0.37%
K2O+Na2O	0.80%	0.60%	2.10%
Mullite	50%	55%	55%	52.00%(50-55)
Cristobalite	25%	20%		16.4%(15-20)
Amorphous phase	25%	25%	45%	31.6%(25-30)
Apparement density	2.45	2.6	2.7	2.69
Apparement porosity	2%max	3%	8%	10.7%
Hot expansion rate	5.9×10	5.9×10	4.44×10	5.9×10
	0-1000	0-1000	20-1000	0-1000
Mohs hardness			7--8	7--8
P.C.E.			35Min	35Min

Outer packing:25kg/plastic woven bag or paper complex bag1,000kg/jumbo bag

Calcined Flint Clay