Method for recovering heat from molten slag and an apparatus the

Details Method for recovering heat from molten slag and an apparatus the Method for recovering heat from molten slag and an apparatus the

1977-08-05

1979-04-03

Dost, Gerald A.

Metallurgical apparatus

Process

65 19, 266200, C21B 306

Patent

active

041473329

ABSTRACT:
Molten slag discharged from a metallurgical furnace and flowing down from a slag trough is atomized by air jet into a primary heat-exchanger of rotary cylindrical type and hot slag granules thus obtained and air are caused to pass in a co-current therethrough so as to exchange the heat of the slag to the air flow to obtain a primary hot blast, then the hot slag granules discharged from the primary heat-exchanger are supplied to a secondary heat-exchanger connected to the primary heat-exchanger where the hot slag granules are brought into contact with a counter flow of cold air supplied from outside the system, or with a counter flow of a mixture of the above cold air and a part of the primary hot blast exhausted from the primary heat exchanger to effect heat-exchange and to recover a secondary hot blast.

REFERENCES:
patent: 883770 (1908-04-01), Wood
patent: 996132 (1911-06-01), Perkins et al.
patent: 1506803 (1924-09-01), Astrom
patent: 2873554 (1959-02-01), Sifrin et al.
patent: 3897231 (1975-07-01), Massey et al.

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