Cooling plate for shaft furnaces

A cooling plate for circulating fluid for cooling the walls of shaft furnaces and particularly blast furnaces, the plate being placed between the refractory material to be cooled and the facing of the furnace to be protected, said cooling plate comprising:

• a flat thin-walled panel forming a tightly sealed enclosure through which passes a single independent stream of cooling fluid, said enclosure being divided by partitions into tubular passages which together define a single sinusoidal circulatory path for the cooling fluid, said panel and said partitions being formed as a single integral member from cast steel;
• fluid inlet means at the bottom of said panel and fluid outlet means at the top of said panel for circulating cooling fluid in a vertical upward sinusoidal movement through said path;
• and
• that face of said panel which faces the interior of the furnace to be protected being lined with a lining of high-strength refractory material, said lining comprising refractory plates arranged in a honeycomb formation, each said refractory plate having in the side thereof facing the furnace a deep recess defined by refractory walls.