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 Parts
FLSmidth gMAX Systems has the most complete line of materials of any hydrocyclone manufacturer. We evaluate each application and recommend the hydrocyclone not only best suited for the separation requirements but also best suited for minimizing maintenance costs. Our engineers work with our customers after the hydrocyclone is installed to ensure the optimum materials are in place in the hydrocyclones. We try to mix the materials so the higher wear areas (apex, lower cone, inlet head) wear out at the same time so downtime and replacement costs are minimized. Most of the materials listed below are stocked in the commonly used parts. Our sales engineers will work with the customer on testing various parts to achieve the goal of lowest possible operating costs.
Wear Materials:
Silicon Carbide
Silicon Carbide is used in the high wear areas of the cyclone, typically for the apex and lower cone liners. In silicon carbide is used throughout the cyclone. FLSmidth gMAX Systems has five types of silicon carbide materials available, they are:
**The standard material used by gMAX Systems for apexes and lower cones for over 30 years is nitride bonded silicon carbide (CR). This material has been modified over the years to improve the consistency of the parts, but the basic composition has remained unchanged. The SiC grains are mixed with Si metal and fired in a nitrogen reducing atmosphere. This material is the most cost effective for most applications.
**Reaction bonded silicon carbide (CX) is used in highly abrasive applications normally in closed circuit grinding in the mining industry. The SiC grains are fired in an inert environment to form a part which does not have a bonding matrix with no voids. It will outlast the standard CR material by about 3 times, but is about 2 times more expensive.
**Sintered alpha silicon carbide (CZ) is used for extremely abrasive applications in the mining industry. Fine SiC particles are formed together by cold high pressure isostatic pressing and then fired at high temperatures. The final part is pure SiC at 98% density. It is the ultimate wear material as it will outlast CX by 3 to 5 times (CR by ten to fifteen times). It is about twice the cost of the CX material.
**Alumina bonded silicon carbide (CG) is a mixture of SiC and Al2O3 particles and is formed by slip casting and fired in an air environment. It holds up well.
Alumina
Alumina is high purity Al2O3 with SiO2 as the primary balance material. Very fine grained particles are isostatically pressed at high pressures and temperature and fired in an air atmosphere. This material holds up very well in coarse abrasive applications.
Synthetic Elastomers
Synthetic Elastomers are used in applications in which temperature or the slurry constituents does not allow the use of natural gum rubber. All of the standard gMAX System liners are available in Neoprene, Nitrile/BunaN (Hycar), EPDM, and Chlorobutyl.
Housing Materials:
Fabricated Carbon Steel
Fabricated carbon steel is the most common housing material.
Stainless Steel
Stainless steel and related alloys are available for all cyclone parts. It is used in chemical applications on the smaller cyclones, and is also available for the larger cyclone parts.
Code Rated
All housings can be designed and manufactured to meet ASME, PED, or other governing bodies.
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