| Category | Muffle Furnace |
| Model | Coal Ash Fusion Furnace |
| Max Temperature | 1400°C (2552°F) |
| Working Temperature | 1300°C |
| Thermocouple Type | B (Platinum-30% Rhodium) |
| Thermocouple Details | High purity alumina insulation, Platinum-Rhodium alloy sheath, 8mm diameter, Type B, Tolerance Class 2, 200 to +1700°C range |
| Heating Element | Silicon Carbide (SiC) |
| Element Details | Brittle material, SiC heating elements, Max temp: 1600°C, High power density |
| Chamber (MM) | 425 x 425 x 425 |
| Outer Body (MM) | 830.0 x 1025.0 x 715.0 |
| Chamber Volume | 76.8 Litres |
| Volume (cu.ft) | 21.9 ft³ |
| Power Load | 16.9 kW |
| Power Supply | 440V, Three Phase |
| Gross Weight | 202.42 kg |
| Chamber Shape | Square |
This highly specialized furnace tests the fusibility of coal ash, a critical parameter for boiler design and operation in coal-fired power plants. Operating at very high temperatures (around 1200°C), it observes ash behavior under simulated combustion conditions. The working principle involves heating a cone of compressed ash in a controlled atmosphere while visually or digitally monitoring the temperatures at which it deforms, softens, and flows. Its purpose is purely analytical, predicting slagging and fouling tendencies to optimize boiler efficiency and prevent downtime. It is a key instrument in fuel quality and power generation research labs.
This configuration is suitable when the sample load must fit a 425 x 425 x 425 MM chamber with usable chamber volume of 76.8 litre, approximate power load of 16.7 kW, square chamber profile. It is commonly selected for laboratory, QC, metallurgical, ceramic, pharmaceutical and industrial heat-treatment work requiring stable heating and repeatable process conditions. Typical use includes general laboratory and industrial heat-treatment applications requiring stable, repeatable temperature control.
Equivalent chamber references: 425 x 425 x 425 MM, 43 x 43 x 43 CM and 17 x 17 x 17 INCH. Buyers searching for 1400 Degree Celsius Coal Ash Fusion Furnace 425 x 425 x 425 MM chamber; 1400°C Coal Ash Fusion Furnace 425 x 425 x 425 MM; 1400 Degree Celsius Coal Ash Fusion Furnace 43 x 43 x 43 CM chamber; 1400°C Coal Ash Fusion Furnace 43 x 43 x 43 CM; 1400 Degree Celsius Coal Ash Fusion Furnace 17 x 17 x 17 INCH chamber; 1400°C Coal Ash Fusion Furnace 17 x 17 x 17 INCH can verify the same physical chamber on this canonical product page before requesting price, GST invoice, packaging and delivery.
Trutherm manufactures 1400 Degree Celsius (1400°C) Coal Ash Fusion Furnace 425 x 425 x 425 MM Chamber for buyers who search by exact machine type, chamber size and 1400°C temperature rating. This page is specific to the MM dimension version, so the chamber size is presented in the unit normally used in the buyer's drawing, tender or purchase request.
Routine QC and teaching labs value a muffle furnace precisely because one unit can cover several standard test methods without dedicated process-specific tooling.
Uniform chamber heating and a simple door-loading design make a muffle furnace straightforward to standardise across multiple operators and shifts.
As a general-purpose muffle furnace, this model covers a broader range of routine heating tasks than a process-specific ashing, tube or sintering furnace, making it the practical default when the lab runs mixed sample types rather than one dedicated process.