| 摘要 |
<p>Lost-wax metal casting process and calcination furnace therefor, whereby black smoke is reduced or prevented during calcination of dewaxed ceramic casting shells (20) in the calcination furnace, which is heated by the combustion of fuel with oxidizer therein, by combusting fuel with oxygen-enriched air or with oxygen and with an above-stoechiometric 02/fuel ratio to heat the calcination chamber (10) during at least part of the calcination step.</p> |
