Quartz

Quartz (silica, SiO₂) is the core mineral within the Sibelco group and can be found in a broad number of applications, such as glass, ceramics and coatings. Quartz can be characterised by:

 

• Relatively high Mohs hardness of 7
• Low electrical conductivity
• Easy to wet
• High inertness in various media
• Shape (depending on the source, quartz particles can have an angular or more rounded shape).

 

Note when using quartz:

depending on the particle size distribution of the product, it can be labelled (STOT RE 2 or STOT RE 1). For more detailed information, visit  www.safesilica.eu.

 

Basic properties

Property	Value	Unit
Moisture		[%]
pH	7	[-]
Hardness (Mohs)	7	[-]
Refractive index	1.55	[-]
Colour (D65/ 10°) L*	93 – 96	[-]
L.O.I.	< 0.3	[%]
Density	2.65	[kg/ dm3]

 

Product overview

Coarse
product	Grade	D50	Grade	D50	D90	OA
		[µm]		[µm]	[µm]	[g/ 100 g]
Silica sand	M31	370	M6	30	95	16.5
	M32	260	M10	23	60	17.5
	M34	170	M300	17	40	19
			M400	12	26	20
			M500	4	10	23
			M600	4	9	24
			M800	1.8	4.1	32

Production locations  Silica Sand

 

 

Application

Quartz will provide:

 

• Abrasion resistance: due to its hardness of 7 on Mohs scale, quartz will increase the coating’s resistance to wear.
• Clarity: due to its fairly low refractive index, fine quartz grades become transparent when combined with certain binder systems.
• UV-curing compatibility: being transparent for UV radiation, fine quartz grades do not block the curing mechanism.