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Bunsen burner
A burner, promoted by Robert Bunsen, used widely in laboratories and sometimes in metal heat-treatment. Through a nozzle at the base is introduced slightly pressurized fuel gas which is mixed with air (primary air) which the flow induces through adjustable unlets. The usual gas : air ratio is 1 : 2. The mixture proceeds up a short metal tube and is ignited at the top, giving a flame temperature of 2,000 K. Outer portions of the flame mix with further air (secondary air) to give a cooler, more luminous flame, where the gas : air ration is about 1 : 4.
Related categories
• INORGANIC CHEMISTRY
• ORGANIC CHEMISTRY
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