| Category | Muffle Furnace |
| Model | Gold Refining Furnace |
| Max Temperature | 1400°C (2552°F) |
| Working Temperature | 1300°C |
| Thermocouple Type | B (Platinum-30% Rhodium) |
| Thermocouple Details | 200 to +1700°C range, High purity alumina insulation, Platinum-Rhodium alloy sheath, 8mm diameter, Type B, Tolerance Class 2 |
| Heating Element | Silicon Carbide (SiC) |
| Element Details | High power density, Brittle material, SiC heating elements, Max temp: 1600°C |
| Chamber (MM) | 125 × 125 × 250 |
| Outer Body (MM) | 525.0 × 725.0 × 525.0 |
| Chamber Volume | 4 Litres |
| Volume (cu.ft) | 7.4 ft³ |
| Power Load | 5.24 kW |
| Power Supply | 220V, Single Phase |
| Gross Weight | 56.97 kg |
| Chamber Shape | Square |
This furnace is part of a system used to purify gold, separating it from other metals and impurities. Operating at temperatures around 1100°C, it facilitates chemical reactions like chlorination or the Miller process. The working principle involves melting the impure gold with specific fluxes or bubbling chlorine gas through the melt, causing impurities to form a slag or fume off. Its purpose is to produce high-purity (99.9%+) gold from scrap, ore, or doré. It is central to precious metal refineries and recycling operations.
This configuration is suitable when the sample load must fit a 125 × 125 × 250 MM chamber with usable chamber volume of 4 litre, approximate power load of 5 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: 125 × 125 × 250 MM, 13 × 13 × 25 CM and 5 × 5 × 10 INCH. Buyers searching for 1400 Degree Celsius Gold Refining Furnace 125 × 125 × 250 MM chamber; 1400°C Gold Refining Furnace 125 × 125 × 250 MM; 1400 Degree Celsius Gold Refining Furnace 13 × 13 × 25 CM chamber; 1400°C Gold Refining Furnace 13 × 13 × 25 CM; 1400 Degree Celsius Gold Refining Furnace 5 × 5 × 10 INCH chamber; 1400°C Gold Refining Furnace 5 × 5 × 10 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) Gold Refining Furnace 125 × 125 × 250 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.
A muffle furnace isolates the sample from direct contact with heating elements or combustion gases, giving cleaner, more repeatable results than an open flame or hot-plate process.
Because muffle furnaces are used across ashing, drying, calcination and light heat-treatment, the chamber and controller are specified for flexibility rather than one narrow process window.
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.