Metallurgical apparatus – Process
Patent
1976-11-04
1978-02-28
Lake, Roy
Metallurgical apparatus
Process
264 30, 264 32, 266280, 266285, C21B 906
Patent
active
040762211
ABSTRACT:
In the operation of a furnace for the production of iron or steel, the air preheater and the pipe communicating the preheater with the furnace are constructed of steel shells lined with an acid-resisting cement, with refractory lining overlying the cement. The acid-resisting cement is composed of quartz sand and refractory material in the form of hollow spheres, silicate binder, and hardener. The spheres are 10 - 40 vol.% of the total volume of quartz sand and spheres.
REFERENCES:
patent: 3528647 (1970-09-01), Hyde
August Thyssen-Hutte AG
Bell Paul A.
Lake Roy
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