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Needle-like wollastonite

 

Chemical name: wollastonite

Molecular formula: CaSiO₃

Properties: Needle-like wollastonite powder is made of ore concentrate of fiber crystal wollastonite in special processing method, which can protect the white needle crystal of wollastonite, then it owns a large length/diameter ratio.

Uses: Widely used in composite materials, paper, paint, rubber, plastic, sealing materials, insulation materials.

Packing: Composite plastic woven bag, 25KG/bag  

 

Index Item	Internal control Index
	GR120	GR200	GR400	GR800	GR1250
Silica % ≥	49	49	50	50	51
Calcium oxide % ≥	46	46	45	45	45
Ferric oxide % ≤	0.18	0.18	0.18	0.18	0.16
Magnesia % ≤	0.8	0.8	0.8	0.8	0.8
Aluminium oxide % ≤	0.12	0.12	0.12	0.12	0.12
Moisture% ≤	0.3	0.3	0.3	0.3	0.3
Whiteness % ≥	90	90	91	91	92
L/D	22:1	18:1	15:1	12:1	10:1
Residue on sieve of 325mesh %≤	0.15	0.10	0.06	0.01	0.008
PH value (10% suspension)	9	9	9	9	9
Loss on ignition %	2.5	2.5	2.5	2.5	2.0