| 摘要 |
The furnace body uses a crucible as the innermost layer thereof to reduce wearing of furnace materials and achieve downsizing of the furnace body; the crucible is made into the form of cartridge so as to fully facilitate replacement thereof; a mixture of a petroleum gas such as propane and butane and an oxygen gas or air is used mainly as a fuel, which is subjected to complete combustion to ensure complete combustion of the fuel, as well as, sufficient temperature control; and means is employed for contriving arrangement of the burner, the ash charge port, etc. so as to improve heat efficiency, thus facilitating temperature control in the furnace, reducing wearing of the furnace body and facilitating repair of the furnace.
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