Sole Heated Oven (SHO)

Tests done in sole heated ovens evaluate the contraction or expansion tendencies of coals or coal blends when heated under controlled conditions. High volatile coals generally contract and low volatile coals generally expand. The final coke mass must contract 8-12% for ease of pushing from the byproduct oven. SGS operates several sole heated ovens to accommodate your coal testing requirements. We will generate data that will help you formulate the specific coal blends required to produce high-quality coke.

30 lb Pressure Test Oven (PTO)

SGS operates a 30lb pressure test oven with 2 computer-controlled heating programs. There is a 3-hour program to determine maximum wall pressure generated by the expanding coal sample, and a 7-hour program used to generate coke for reactivity and after reaction strength testing. High coking pressure can damage the walls in by-product coke ovens. SGS will use the PTO as an effective screening and comparison tool for evaluating medium and low volatile coking coals for your facility.

Moveable Wall Oven Test

SGS has an 18’ wide movable wall oven that holds a charge of 650-750 lbs of coal to test new or modified coal blends. This oven produces coke of suitable size and quantity for coke physical tests such as stability, hardness, and CRI/CSR. Wall and internal gas pressures generated during the test are also measured. The movable wall prevents oven damage due to excess expansion and/or pressure.

SGS has a network of accredited, independent laboratories around the world to accommodate your coal carbonization testing. SGS provides complete assessment services on your coal and coal blends to determine suitability and performance in accordance with ASTM, ISO and other international standards. Partner with SGS and leverage our technical capabilities to minimize your risks and enhance the efficiency of your operations.