A heat source capable of generating a 900°C flame would require a fuel or energy source with a high combustion temperature. Some possible heat sources that can achieve such temperatures include:
Natural gas with high-pressure burners: Certain burners designed for natural gas can reach temperatures of up to 900°C, depending on the burner design and fuel-to-air ratio.
Oxygen-acetylene torch: An oxygen-acetylene torch, commonly used in welding and metalworking applications, can produce a flame temperature of around 3200°C at the tip of the inner flame cone. By adjusting the fuel-to-oxygen ratio, the temperature can be controlled to achieve lower temperatures like 900°C.
Plasma torch: Plasma torches, which utilize an electric arc to ionize gas, can produce extremely high temperatures. These torches can achieve temperatures exceeding 9000°C, making them capable of generating a 900°C flame.
It's important to note that working with high-temperature flames and heat sources requires caution and appropriate safety measures to prevent accidents or damage. Proper training, equipment, and supervision are essential when working with such intense heat sources.