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2. Cowper technology
The cowper consists of an active refractory lining surrounded by insulation, all contained in a pressure-resistant metal or sheet metal enclosure.
A burner heats the stack, and a set of valves allows you to switch from one phase to another in the operating cycle without ever cutting off the wind to the blast furnace.
2.1 Refractories
Three types of refractory are used:
silico-aluminous and aluminous ;
Silica;
dense products.
The first writings on wind reheating date from around 1800. The promoter was an Englishman, James B. Nelson, a gasworks...
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Cowper technology
How cowpers work
