Hard compound is the general term for cement bonded wear protection materials. They are based on inorganic materials of high strength and good wear resistance. The use of only extremely hard aggregates such as bauxite and corundum results in the good quality of the wear protection materials.
The recipe for success
The mixture includes defined additives and is made up of:
■ hard aggregate materials
■ cement binder
■ micro and nano silica
A specific portion of steel or other fibres is added to enhance the structural strength. The type of fibres used depends on the thermal, chemical and corrosive stress to which the hard compound will be exposed. Expansion joints will be provided when the compound is used at higher temperatures.
Common Applications
• lining of plant components
• pipe bends in coal dust piping
• agitators for the removal of dust from blast furnace gases in steel works
• and separator linings for the milling of cement.
Advantages
■ high strength and abrasion resistance to wear caused by sliding friction
■ excellent abrasion values
■ large surface lining with no joints
■ varying lining thickness depending on the stress due to wear
■ can be used after 24 hours
■ suitable for temperatures up to 1,200 °C / 2,192 °F
■ high thermal shock resistance
■ even complicated geometries are feasible
■ overhead working without problems
■ ideally suited for repairs
■ can be installed at the site by locally available staff
■ complete wear protection program
■ optimal solution when used in combination with other wear resistant materials
Installation
Towelled
This compound allows protection of horizontal, vertical, inclined and curved surfaces. Overhead working is easily done.
Cast
This material will be particularly useful for protecting flat surfaces against wear or if formwork can be used.
Sprayed-On
Sprayed-on compound allows large surfaces to be lined in a minimum of time. It may be applied by spraying horizontally, vertically or overhead.
Other Products
