Filter Coal

Like all filter coal mined in Australia, our Filter Coal is a bituminous coal rather than an Anthracite Coal.

While matching the durability of anthracite coal, River Sands’ Filter Coal has advantages over anthracite coal including:-

  • a rougher surface texture which assists floc attachment (and build up of surface coatings such as manganese dioxide if required),
  • a more consistent particle shape, and;
  • a superior grading curve.

Our filter coal provides a dense, hard and durable filter media which is free of clay, shale and extraneous material - giving many years of consistent trouble free service. It is particularly effective when used in dual media water filters with filter sand. 

River Sands’ Filter Coal has been subjected to extensive evaluation by several of the largest water authorities in Australia. This has confirmed its abrasion resistance, durability and stability. These authorities include the Sydney Water Corporation and the Hunter Water Corporation. It has also been evaluated and approved by the Hong Kong Water Supplies Department.

Our Filter Coal is highly regarded for its hardness and consistency and has a low *Hargroves Grindability Index - encouraging longer filter media life. In addition, the low specific gravity of our filter coal encourages effective backwashing.

Our filter coal is available in bulk or 22.5 kg bags.

Downloads

*Hargroves Grindability Index

Physical Properties Typical Results
Specific Gravity 1.45
Solubility <1.0%
Loss on Ignition 0.6%
Friability <50
Effective Size 1.0 - 1.2 mm
Uniformity Coefficient 1.3

Standard Sizes

e.s. 0.8 - 1.0mm       e.s. 1.0 - 1.2mm         e.s. 1.2 - 1.4 mm

Filter Coal made to your specifications

Physical Properties Typical Results
Effective Size To order
Uniformity Coefficient 1.3 or more
Bulk Density 0.5 T/m3
Specific Gravity 1.45
Acid Solubility < 1.0 %
Hargroves Grindability Index HGI < 50

 

Testimonial

UnderWater World has been doing business with River Sands Pty Ltd for a number of years and have always found them to be reliable and efficient, timely and cost effective. The quality of their filter media products has always met our high expectations and it has been a pleasure to have them as a supplier.

Neil Swann, Marketing Manager, UnderWater World, Mooloolaba.

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