200-325Mesh Cheap Koalin Powder

  1.      Specifications: Particles: 0-1mm,1-3mm,3-5mm,5-8mm,8-15mm Sand:16-30mesh,30-60mesh,60-80mesh,80-120mesh(Mainly for precision casting.) Powder: 200mesh,325mesh  2.      Physical properties

Whiteness	%	≥85.0
325 mesh Screen residue	%	≤0.01
Density	g/cm³	2.62
Average particle diameter	um	0.5
Mohs hardness	/	2
Moisture	%	≤0.4

 3.      Chemical indicators:

Item	KDH45	KDH45	KDH44	KDH44	KDH43	KDH42	KDH40	KDH36
	A	B	A	B
AL2O3 %	46-48	45-48	44-48	44-48	43-48	42-46	40-46	36-42
Fe2O3 %   (max)	1.0	1.15	1.3	1.5	2.0	2.5	3.0	3.5
Ti02  %    (max)	0.8	0.8	0.9	0.9	1.0	1.1	1.2
K20+Na20 %   (max)	0.3	0.3	0.4	0.4	0.4	0.5	0.5	0.6
Ca0+Mg0 %   (max)	0.5	0.5	0.5	0.5	0.5	0.6	0.7	0.8
Bulk density g/cm3(min)	2.58	2.55	2.52	2.50	2.45	2.40	2.37	2.30
Refractorines °C (min)	1780	1770	1760	1750	1730	1710	1710	1680
Impurities %  (max)	0.5	1.5	2.0	2.5	3.0	3.5	4.0	5.0

 4.      Applications: Calcined kaolin is mainly used for manufacturing high-quality refractory products, refractory castable, sagger, kiln furniture, crucibles, ceramic fiber,  precision casting sand, ceramics products, etc