Product

Filter anthracite

Description:
The production of filtration-grade anthracite is based on a thermally treated lignite (type H) and a natural anthracite (type N) which are crushed and screened.

Filtration-grade anthracite is used in nearly all water treatment plants, notably in multi-layer filtration combined with Filcom’s calibrated high-grade filter sand.

Properties • Chemical analysis • Standard grain sizes • product overview

Properties

Type N Type H

Grain shape: sharp edged angular

Surface texture: smooth rough

Material structure: dense porous

Colour: black black

Loose bulk density: approx. 700 kg/m³ approx. 500 kg/m³

Carbon content approx. 90% approx. 87%

The hardness and wear resistance of type N
have higher values than those of type H

Chemical analysis

Available on request

Standard grain sizes

Type N Type H

I: 0,6-1,6 mm 0,6-1,6 mm

II: 1,4-2,5 mm 1,4-2,5 mm

III: 2,0-4,0 mm --

IV: 4,0-8,0 mm --

Other grain sizes on request

Properties
	Type N	Type H
Grain shape:	sharp edged	angular
Surface texture:	smooth	rough
Material structure:	dense	porous
Colour:	black	black
Loose bulk density:	approx. 700 kg/m³	approx. 500 kg/m³
Carbon content	approx. 90%	approx. 87%
The hardness and wear resistance of type N have higher values than those of type H

Standard grain sizes
	Type N	Type H
I:	0,6-1,6 mm	0,6-1,6 mm
II:	1,4-2,5 mm	1,4-2,5 mm
III:	2,0-4,0 mm	--
IV:	4,0-8,0 mm	--
Other grain sizes on request