Hot-blast main for hot-blast stove system of a blast furnace

Details Hot-blast main for hot-blast stove system of a blast furnace Hot-blast main for hot-blast stove system of a blast furnace

1993-10-21

1994-10-25

Andrews, Melvyn J.

Metallurgical apparatus

With means to preheat gas

266186, C21B 716

Patent

active

053582233

ABSTRACT:
A hot-blast main for a hot-blast stove system of a blast furnace has a refractory structure comprising a plurality of courses of refractory bricks. At least a first one of the courses has at least one part thereof comprised of a plurality of expansion-joint forming bricks whose dimensions and arrangement are such that, in the cold condition of the hot blast main, there are provided radial expansion joints between the expansion-joint forming bricks and at least one adjacent part of the hot-blast main. At least some of the expansion-joint forming bricks of the first course are placed radially staggered relative to at least one adjacent such brick in each case, so that the expansion joints are provided at both the radially inner side and the radially outer side of said first course. This construction accommodates differential thermal expansions and provides good stability of the structure.

REFERENCES:
patent: 4987838 (1991-01-01), Mailliet et al.

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