New High-Temperature Deltech Furnace
With our high-temperature Deltech furnace, MTI offers enhanced capabilities for examining slag-melting behavior and slag-refractory interactions. This system also enables us to assist in the development of synthetic formulations as well as predict refractory corrosion.
To determine the interaction of slag with refractory materials, MTI conducts cup tests at temperatures up to 1700°C in reducing or oxidizing atmospheres. Using SEM techniques, we analyze the cup and slag materials to determine penetration and reaction of slag with refractory materials.
More about our slag refractory testing equipment:
- Temperatures up to 1700°C
- Reducing and oxidizing atmospheres
- Slag refractory reactions
- Refractory corrosion
- Slag properties
- SEM mapping and linescans
New LECO ash-fusion furnace system
MTI has also added a new LECO ash-fusion furnace system to measure ash fusion temperatures and slag flow behavior under controlled atmospheres.
MTI measures four conventional ash-fusion temperatures (AFTs) determined under oxidizing or reducing conditions (ASTM standard D1857). The AFTs include: 1) initial deformation temperature, 2) softening temperature, 3) hemispherical temperature, and 4) fluid temperature.
Viscosity Measurement – T250
Viscosity is the most important physical property for slag and ash deposits, describing a material’s resistance to flow and develop deposit strength.
Viscosity of slags can be measured in either oxidizing or reducing environments using the crucible method illustrated below. T250 is the temperature at a viscosity of 250 poise, at which slag begins to flow (and develop strength). To determine the viscosity of a material, MTI places a sample of ash or slag in a furnace and heats it at a steady rate. We then monitor the test through the stages of melting. Tests are captured on video, and image analysis is used to determine the T250.