Chilworth Global - THERMAL STABILITY TESTING

Powder Layer Screening Test
The powder layer test is used to evaluate the thermal stability of powders and dusts in dryers where heated air is circulated over a powder layer. Consequently, this test is also known as the air-over-layer test. It is intended to simulate the conditions to which materials are exposed in various types of dryers, including tray, band, and cross-flow. This test also simulates the conditions to which residual powder deposits in all types of dryers may be exposed.

Bulk Solid Screening Test
The Bulk Solid Test is used to evaluate the thermal stability of bulk solids, powders, and dusts during drying and related operations. It is intended to simulate the conditions to which materials are exposed when they collect in certain types of dryers or downstream in hoppers, silos, drums, or bags.

Aerated Solid Screening Test
The Aerated Powder Test is used to evaluate the thermal stability of powders and dusts during drying operations in which a heated air stream passes through the material, such as in circulating band and fluidized bed dryers.

Isothermal Test - Basket Test
While screening tests are useful for identifying a potential thermal stability hazard, more exacting isothermal tests are necessary to establish safe operating temperatures. Isothermal Basket Tests can be used to identify the minimum onset temperature of exothermic activity for a powder or dust sample. Further, since tests are conducted using at least three (3) sizes of basket, extrapolation techniques can be used to determine the maximum safe operating or storage temperature for virtually any vessel size or geometry.

Chilworth Global

250 Plainsboro Road, Bldg #7, Plainsboro, NJ 08536, USA.

Tel: 609-799-4449 · Fax: 609-799-5559 · Email: safety@chilworth.com