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1.) In-line homogenizer for modified bitumen Wahal Engineers Wahal Engineers offers a range of High Shear In-Line homogenizers developed for the disintegration & solubilisation of polymers into bitumen for the production of modified bitumen. The body walls are electricaly heating, ensuring that the product cannot cool or solidify inside machines.
Because processing products that solidify when cold requires thorough heat saturation before start-up, the machines ensure heat reaches all areas where residue accumulates.
Sealing is by means of a graphite/carbon fiber gland packing, designed for operation on bitumen’s. Standard mechanical shaft seals are available according to the application and the batch size can also be varied. Like all our units, in our interchangeable stators can adapt the machine for varying processes.
Modified bitumen production Polymers & rubbers such as SBS, APP, PVC, EVA are blended with bitumen primarily used in the production of road surfaces & roofing felts. The polymers modify bitumen to improve its physical stability, flexibility & resistance to extreme temperatures.
Some polymers such as SBS are more difficult to dissolve/disperse & require high shear to achieve a satisfactory mixing time. Our Jacketed In-Line mixers attain this. The bitumen/polymer mix is recycled through the In-Line homogenizer where the high shear rotor/stator workhead rapidly disintegrates the polymer pieces. This high shear action exposes constantly increasing areas of fresh polymer to the surrounding bitumen, reducing the process time.
Typical applications: 1. Polymer modified bitumen (SBS) 2. Bitumen emulsions, Under seals & waterproofing compounds, 3. Bitumen cable insulation
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