A chemical producer and Blasch built a complete dust collector from cast silicon carbide instead of metal parts.
Multicyclone tubes wear where the dust turns.
This plant moved the whole collector to cast silicon carbide
A chemical producer worked with Blasch to build a turnkey dust collector with SiClone components in cast silicon carbide, rather than replacing worn metal tubes one by one. The collector uses the same multicyclone principle as before, with inlets, spin vanes and outlet tubes cast as ceramic parts that are about a third of the weight of steel.
A mechanical dust collector, or multicyclone, separates particles by spinning the gas in many small cyclone tubes. The dust hits the walls at low angles, again and again, at the same spots. Cast iron and hard alloy tubes erode there first, and every worn tube lets dust bypass into the outlet.
In a chemical plant the collector sits in the process path. When tubes wear through, the fix is a shutdown and a crew changing heavy metal parts inside the housing.
In a multicyclone, the service interval is set by the one tube that erodes first, so a material that wears evenly across all tubes changes the plan for the whole collector.
The plant chose a complete ceramic collector instead of single replacement parts. SiClone components are cast to the dimensions of the existing collector design, so they fit the tube sheets and housing the plant already has. Standard tube sizes are 6, 9, 12 and 24 inches.
The parts are cast from OXYTRON oxide bonded silicon carbide or ALTRON alumina bonded silicon carbide. Both grades are made for abrasion and stay in service above 1,200 °F. The cast bore is smoother than cast iron, which helps the gas keep its spin.
Blasch also supplied SiClone parts to an iron ore pelletizing plant, where the dust is coarser and harder. SiClone in iron ore pelletizing
The collector is one of several wear parts Blasch casts in silicon carbide.
Ceramic inlets, spin vanes and outlet tubes as drop-in parts for existing multicyclones.
The OXYTRON grade used for abrasive gas and particle streams.
Ceramic parts for wear, heat and corrosion in refineries and chemical plants.
No. SiClone parts are cast to the dimensions of the existing multicyclone design, so they go into the housing and tube sheets already in place.
The standard SiClone tubes are 6, 9, 12 and 24 inches. Other sizes are cast to the dimensions you provide.
The silicon carbide grades used for SiClone are suited for service above 1,200 °F.
Tell us the collector design, the tube size and what the dust is. A Blasch engineer works out which silicon carbide grade fits your gas stream.
