F - Mech Eng,Light,Heat,Weapons – 27 – B
Patent
F - Mech Eng,Light,Heat,Weapons
27
B
39/67
F27B 1/24 (2006.01) C21B 7/10 (2006.01) F27D 1/12 (2006.01) F27D 9/00 (2006.01)
Patent
CA 1220621
"A shaft furnace having a metal shell, a refractory lining and cooling bodies projecting through the shell into the lining" ABSTRACT OF THE DISLOSURE In a shaft furnace having a metal shell, a refractory. lining of relatively high thermal conductivity and cooling bodies which project inwardly through the shell into the lining and through which in operation cooling liquid flows, has a high uniformity of temperature in the lining. In order to improve its operational characteristics, in particular to improve temperature uniformity yet further while reducing heat loss, the shell and the cooling bodies are screened from the lining. Between the cooling bodies and the refractory lining and between the shell and the refractory lining there are respectively first and second thin layers of refractory material having in each case a .lambda. - value of less than 5 kcal/mh°C, preferably less than 1.5 kcal/mh°C. The thin layers may be of refractory felt or refractory plates.
451011
Felthuis Jacob
Laar Jacobus Van
Rengersen Jacob
Hoogovens Groep Bv
Ridout & Maybee Llp
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