Qchauffage â m c ÎT ; Qfusion â m Lfm: kg; c: J·kgâ»Âč·Kâ»Âč ; Lf: J/kg ; Q: J.
Use when: Simplified estimate to be completed by reactions, gases, losses and changes in properties.
Metallurgical furnace selection and operation
Identify the energy source and the real function of each family of equipment.
What is happening?
A furnace can dry, calcine, roast, melt, or refine a charge. Rotary furnace, fluidized bed, flash fusion, street light, converter, arc and induction have their own exchanges and mechanisms.
A HĂ©roult electric arc furnace must be distinguished from a HallâHĂ©roult electrolytic tank for aluminium. An equipment name does not imply the same reaction, the same metal, or the same heat source.
The formulas, with their conditions.
PĂ©lectrique = U IP: W; U: V; I: A.
Use when: DC relationship; in AC, use the appropriate active power and power factor.
Where is this principle used?
Foundry
Melt and homogenize metallic charges.
sulfide smelter and steel industry
Transform and refine materials with a suitable oven.
What to observe in the experiment
Classify workshop equipment by operation and energy: heat of reaction, combustion, arc, induction or electrolysis.
References and readings
This sheet explains the principles and their assumptions. Educational simulation can simplify the process; an industrial model requires suitable data and validation.
Have you understood the essentials?
Only one correct answer per question. Answer all three questions, then view the answer key.
Intu Lab · Understanding sheet · Kimba Christian