ROTEX Screeners are self-contained production screening machines for separating dry materials according to particle size. Through the unique gyratory-reciprocating motion of their near-horizontal screen surface, combined with a positive screen mesh cleaning system, ROTEX provides unusually high efficiency and capacity. All of this is the result of continued development throughout hundreds of applications in many industries.
Petroleum coke is the solid residue remaining after the distillation of petroleum materials. It is widely used for electrodes in the electrolytic reduction of alumina to aluminum and the reduction of iron ore in blast furnaces. Another use is as an additive to increase carbon in metals. The bulk density of petroleum coke is 40 to 82 PCF (650 to 1300 kg /M3).
ROTEX Screeners are equipped with heavy duty features to address the abrasiveness of the coke. These features include abrasion resistant linings in all impact areas, heavy gauge bottom pan and abrasion resistant screen wire. The ROTEX ball mesh cleaning system effectively prevents blinding, ensuring that screening performance is maintained.
Multiple deck ROTEX Screeners allow the sizing of various product fractions without the need to change screens. ROTEX Screeners provide accurate separations of on spec product with maximum yield. Typical loadings range from 10 tph/m2 for coarse scalp and 2.5 to 7.5 tph/m2 for fine to medium product sizes.
Rotex screens metal powders such as iron, steel, copper, tin, lead, zinc, nickel and aluminium, providing sized material for a variety of end uses including sintered metal parts, solder powders and rocket fuel ingredients. The bulk density of these powders varies from 70 PCF for aluminum to 260 PCF for iron powder.
Metal powder screening often requires fine mesh separations in the 100 to 325 mesh range. Producers require very efficient screening performance to get maximum yield of the accurately sized fractions. For fine mesh separations, capacities are typically in the range of 50 to 100 PPH per square foot of screen area. Sealing is very important to prevent leakage and contamination between products. Because metal powders tend to blind fine mesh screens, a mesh cleaning system is critical to provide continuous screening performance. Constant tensioning of the wire screen is necessary to prevent stretching and sagging of the mesh.