One-piece silicon carbide apexes, cones and cylinders, with an optional polyurethane backing.
Apex, spigot and cone cast in silicon carbide.
Backed with polyurethane where the cyclone sees impact.
For coarse, highly abrasive mineral slurry, cast silicon carbide is the hydrocyclone liner material that keeps its shape longest in the high wear zones: the apex, the spigot and the lower cone. Blasch casts these liners in one piece in several silicon carbide grades or dense alumina, which resist abrasion better than cast steel, rubber or urethane alone, and can encase them in polyurethane to take impact. You can order the complete liner set or only the high wear parts, so the rest of the cyclone keeps its current lining.
Slurry enters the feed head tangentially and spins down through the cylinder and the cone. The coarse fraction leaves through the apex and spigot, the fines and most of the water through the vortex finder at the top.
Wear is heaviest where the solids are coarsest and fastest: at the feed inlet and in the lower cone and apex. As the apex wears open, the split between overflow and underflow drifts, and the cut size moves long before the liner leaks.
That is why liner life in a hydrocyclone is measured twice: in hours until the part has to come out, and in how long it holds the classification you set at startup.
Ceramic is the standard answer to slurry abrasion. The open questions are how it is installed and what happens when it cracks.
A hydrocyclone separates only as well as its apex holds its shape, so the liner that keeps its bore longest also keeps your cut size where you set it.
Blasch supplies the full liner set for a hydrocyclone or the parts that wear first. Each part is cast to repeatable tolerances, so the next one fits like the last.
The highest wear zone of the cyclone, cast as single pieces that can be changed without touching the cone.
One-piece sections up to 60 inches in diameter, with shiplaps and mating joints cast into the ends.
Volute inlet heads and vortex finders, precision cast to assemble into the hydrocyclone you already run.
The grades are reaction bonded silicon carbide (InVinCer RB), nitride bonded (NITRON), alumina bonded (ALTRON), oxide bonded (OXYTRON), sintered silicon carbide (ULTRON) and dense alumina. Which one fits depends on particle size and hardness, solids content, pH and temperature. Reaction bonded silicon carbide
The silicon carbide grades weigh about a third as much as comparable cast steel parts, which makes a liner change on a large cyclone a lighter lift.
Blasch liners run in coal, iron ore, gold, copper and phosphate processing, in cement plants, in pulp and paper, and in wet flue gas desulfurization. Ceramics for mining and mineral processing
The pumps that feed the cyclone wear on the same slurry. Their liners are covered on the page for ceramic pump components, and the full range on wear products.
Ceramic can crack when oversize material hits it. The polyurethane backing exists for that case: it absorbs the impact and keeps a cracked liner in one piece until the next planned change.
Yes. Apex and spigot are cast as separate parts that fit the existing cone, so they can be replaced on their own.
Cones and cylinders are cast up to 60 inches in diameter. Small cyclones start at about one inch.
Blasch does, in house. Earlier, the ceramic inserts went to a separate shop for encapsulation, which added a second supplier and more lead time.
Send the cyclone size, the ore and the slurry conditions. A Blasch engineer proposes the liner parts and the grade for that duty.
