| 摘要 |
<p>This invention concerns a procedure for preheating scrap to be charged into a melting furnace with the off-gas of the melting furnace, which is advantageously an arc furnace, whereby according to the procedure the scrap is preheated with clean gas heated, by means of an heat exchanger which exchange the heat between the off-gas and the clean gas. …<??>This invention also concerns a plant according to the afore mentioned procedure. The plant consists of a duct (11) which gather and convey hot fumes leaving the furnace (10) and is connected on the one hand to the furnace (10) and on the other hand to the heat exchanger (12), a duct (13) which convey the cooled fumes leaving the heat exchanger (12), a duct (18) which convey clean gas and are connected to the inlet of the heat exchanger (12) and ducts (19-21) which convey preheated clean gas leaving the heat exchanger (12) to at least one skip of scrap (22).</p> |
