Pyrotek launches Wollite 30ST feeder bowl insulation material
An innovation in speciality insulating materials recently introduced by Pyrotek Inc, Wollite 30ST is said to be particularly suitable for use around refractory feeder bowls (spouts) used by container and specialty glass manufacturers. Pyrotek, a leading supplier of high temperature materials to the glass industry, is headquartered in Spokane, Washington, with offices across the globe.
Developed at the company’s Chicoutimi, Quebec research facility, the new Wollite 30ST formulation is essentially a pourable liquid material. After mixing parts A and B together, a liquid with the consistency of a thin milk shake is easily poured into the cavity between the refractory bowl and the steel casing. Within a matter of five to 10 minutes an exothermic reaction occurs and the liquid material changes physically and expands into foam with a density of approximately 30 lb/ft3 (480.55kg/m3).
The consistency of the pourable mix and its foaming properties make Wollite 30ST a preferred formulation for insulating refractory spouts and orifice rings. Unlike vermiculite granules or micro porous formed pieces, which require time for packing and assembling, with Wollite 30ST the material is simply poured, and its foaming action fills the space. Liquid Wollite 30ST seeps into the smallest voids between the refractory and the steel casing. Once solidified, this insulation material offers lower spout temperatures, with no hot spots around the spout and more consistent control of the glass melt and gob weight, all resulting in increased productivity.
The lightweight, solid foam consistency of Wollite 30ST makes removal and reinstallation of the refractory faster and easier. Customers have reported changing out spouts in one to two hours less time than when using conventional insulation methods. Shorter down time also offers increases in production and overall pack rates.
"Pourability is the key innovation for ease of installation," informs Pyrotek’s Glass Division Manager, Tim March. "Mixing has been simplified with a two-part mix. This new formulation offers less settling in the container and easy mixing with limited separation of water for a more consistent pour. Once mixed it’s easy to use… you pour it, it foams and its done," he assures.
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