| 摘要 |
PROBLEM TO BE SOLVED: To provide a level measuring method and a device applied to an ash melting furnace such as a plasma electric melting furnace which melts molten objects such as incinerated ash, reduced in initial cost and in running cost. SOLUTION: The method comprises steps for measuring the back pressure of inactive gas A supplied into a furnace body 51 while moving an electrode 53 down in the ash melting furnace 50 supplying the inactive gas A into the furnace body 51 through a hollow hole 52 of the electrode 53 movable up and down, and detecting a molten slag level SL and a molten metal level ML from a change in the increasing rate of the back pressure. COPYRIGHT: (C)2009,JPO&INPIT
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