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This sodium bentonite processing facility switched from tungsten-carbide-tipped pins in its pin mixer to versions covered in a nickel matrix cloth with tungsten carbide chips. The result has been a “significant” increase in the amount of time between pin changeouts, according to processor Black Hills Bentonite.
This article discusses alumina ceramic, an alumina- based ceramic material that's used as a wear- resistant liner in equipment that handles abrasives. General information about wear and wear-resistant materials is given, and the qualities of alumina ceramic are compared to those of other wear- resistant materials. Design factors to consider when using alumina ceramic for lining handling equipment are also discussed.
Processing abrasive materials can cause wear on various components in your material handling system. This article discusses possible techniques that can help protect slide gates and diverter valves.
At Witco's diatomaceous earth processing operation, an alumina lining gets rid of the cyclone-patching chore -- permanently.
Abrasion problems aren't confined to high-speed mixing equipment: They also affect low-speed blenders — namely, ribbon blenders and vertical cone screw blenders — with equally serious results. This two-part article outlines six strategies for fighting abrasion in your low-speed blender. Part I [June 2000] covered the first two strategies as well as low-speed blender basics and tips for assessing the wear potential of your abrasive materials. Part II covers the final four abrasion-fighting strategies.
Abrasion problems aren't confined to high-speed mixing equipment: They also affect low-speed blenders — namely, ribbon blenders and vertical cone screw blenders — with equally serious results. This two-part article outlines six strategies for fighting abrasion in your low-speed blender. Part I covers the first two strategies as well as low-speed blender basics and tips for assessing the wear potential of your abrasive materials. Part II, which will appear in the July issue, covers the final four abrasion-fighting strategies.
When a contract producer of metal powders was having wear problems on its dryers' vacuum line shafts, a wear-resistant metal coating extended the shafts' lives.
Lining bulk storage equipment with sheets of ultra-high- molecular-weight polyethylene [UHMW-PE] is, in many instances, an ideal way to improve the flow of bulk solids. The benefits offered by UHMW-PE are becoming more widely recognized and accepted throughout the world. However, further education on the proper use of UHMW-PE is necessary. The technical information needed to predetermine the effectiveness of a liner is seldom sought out; in addition, liners are often installed incorrectly.
When coal bridged and formed ratholes in a power plant's silo hoppers, UHMW-PE liners improved flow, maintaining electric output.
A producer of extremely abrasive plastic pellets treats vulnerable conveying lines and equipment with
infiltration-brazed tungsten carbide cladding to end wear problems.
The equipment that crushes or grinds your dry bulk material takes a real beating, often leading to equipment downtime and high replacement and refurbishment costs. Applying hard facing via welding to your size reduction equipment surfaces can improve your operation's efficiency by lengthening the equipment's service life and keeping your maintenance costs under control. This article discusses abrasive and impact wear in size reduction equipment and how to choose and apply a hardfacing alloy.
After funnel flow from a coal bunker results in stagnant coal that can spontaneously combust, a power plant installs new hoppers and flow-promoting liners.
After trying to reduce wear using railroad rails and hardfaced steel bars for a chute and a transfer point, a sand and gravel company switches to rubber impact plates and flat sheeting.
A custom processor uses a ceramic-lined jet mill to grind abrasives without the wear and tear.
New system allows faster and more economical installation of UHMW-PE truck bed liners and prevents them from buckling.
Wear liners for hoppers, transitions, chutes, and spouts in material handling systems are available in several types to handle different forms of abrasive wear. After classifying forms of abrasive wear, this article describes wear liner types, including their advantages and disadvantages, and tips for selecting and installing a liner.
A foundry installs abrasion-resistant pipe and elbows in its conveying lines to increase pipe life and reduce downtime and maintenance.
After many refractories failed, an animal feed ingredients plant installs durable gunned plastic refractories in a burner's combustion chamber and a plenum leading to a dryer.
A dental investment manufacturer installs tungsten carbide tiles on its grinding mill's material contact parts to counteract wear.
A wastewater treatment plant installs abrasion-resistant tiles inside 24 cyclones to prevent abrasive wear and lengthen their operating life.