Nepheline syenite

Nepheline syenite (silicate, naturally occurring blend of albite, microcline and nepheline) is a feldspatic mineral mined in Canada and Norway.

Nepheline syenite can be characterised by:

• High purity
• Absence free crystalline silica (free of labelling)
• Brightness
• Relatively low refractive index, making it a transparent filler in various binders
• High inertness in various media
• Easy wetting
• Transparency for UV-radiation (ie. suitable for UV-curing processes).

 

Basic properties

Property	Value	Unit
Hardness (Mohs)	6	[-]
Refractive index	1.51 – 1.53	[-]
Density	2.6	[kg/ dm3]

 

 

 

 

Product overview

Product overview Minex

Product	Grade	D50 [µm]	Tappi [-]	OA [g/ 100 g]	pH [-]	Moisture [%]
Minex	2	13.6	85.5	26.5	10.3	0.09
	3	11.0	88.0	27.0	10.3	0.09
	4	7.6	88.7	30.0	10.4	0.10
	7	3.5	90.0	33.0	10.4	0.16
	10	2.6	90.5	35.0	10.5	0.18
	12	1.5	92.0	34	10.5	0.20

Production location Minex

 

 

Product overview Nepheline

Product	Grade	D50 [µm]	R457 [%]	OA [g/ 100 g]	pH [-]	Moisture [%]
Nepheline	S4 PO	9.2	81.5	21	10.1	0.1
	S6 PO	5.1	84.4	22	10.2	0.2
	S7 PO	4.3	85.4	23	10.4	0.2
	S10 PO	1.9	85.6	31	10.4	0.4

 

Mining locations Nepheline

 

Application

Nepheline syenite will provide:

 

• UV resistance: being insensitive to UV radiation, nepheline syenite will reduce the coating’s degradation.
• IR reflection: nepheline syenite contributes to IR reflection of roof coatings.