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Electric kilns: kilns operated by electricity were developed in the 20th century, primarily for smaller scale use such as in schools, universities, and hobby centers. The atmosphere in most designs of electric kiln is rich in oxygen , as there is no open flame to consume oxygen molecules.
Induction furnaces do not require an arc, as in an electric arc furnace, or combustion, as in a blast furnace. As a result, the temperature of the charge (the material entered into the furnace for heating, not to be confused with electric charge) is no higher than required to melt it; this can prevent the loss of valuable alloying elements. [5]
A kiln is a thermally insulated chamber, a type of oven, that produces temperatures sufficient to complete some process, such as hardening, drying, or chemical changes. Various industries and trades use kilns to harden objects made from clay into pottery , bricks etc. [ 3 ] Various industries use rotary kilns for pyroprocessing —to calcinate ...
An electric furnace; A central heating plant for a home or building; An electric arc furnace used for steel making and smelting of certain ores; An industrial heat treating furnace; An electrically heated kiln; An induction furnace used for preparation of special alloys; A modern muffle furnace
An electric arc furnace (EAF) is a furnace that heats material by means of an electric arc. Industrial arc furnaces range in size from small units of approximately one-tonne capacity (used in foundries for producing cast iron products) up to about 400-tonne units used for secondary steelmaking .
[citation needed] The heat source may be gas or oil burners, but more often they are now electric. The term muffle furnace may also be used to describe another oven constructed on many of the same principles as the box-type kiln mentioned above, but takes the form of a long, wide, and thin hollow tube used in roll-to-roll manufacturing processes.