EP 1332327 A2 20030806 - METHOD AND ANNULAR SHAFT FURNACE FOR PRODUCING CALCINED MATERIALS
Title (en)
METHOD AND ANNULAR SHAFT FURNACE FOR PRODUCING CALCINED MATERIALS
Title (de)
VERFAHREN UND RINGSCHACHTOFEN ZUR ERZEUGUNG VON GEBRANNTEM GUT
Title (fr)
PROCEDE ET FOUR A CUVE ANNULAIRE SERVANT A PRODUIRE UNE MATIERE CALCINEE
Publication
Application
Priority
- DE 10051710 A 20001018
- EP 0112033 W 20011017
Abstract (en)
[origin: WO0233338A2] The invention relates to the production of calcined materials such as lime, dolomite, magnesite or similar in an annular shaft furnace, wherein the annular shaft of said furnace extends in a substantially vertical manner forming a treatment area and is crossed from top to bottom by material to be treated which moves successively from a preheating area, a calcining area and a cooling area. The calcining area is divided into several superimposed calcining sections. Calcining planes are created in the transition areas between each two calcining sections. Hot treatment gases from calcining chambers are fed thereto for heat treatment of said material. It is possible to ensure reliable operation and relatively easy control and supply for a relatively simple overall structure of the shaft furnace by producing at least those hot treatment gases which are to be introduced into the annular shaft on the lower calcining plane in a single external calcining chamber and by introducing them into the treatment chamber via an annular line surrounding the annular shaft in an evenly distributed manner along the periphery of the shaft.
IPC 1-7
IPC 8 full level
CPC (source: EP)
Citation (search report)
See references of WO 0233338A2
Designated contracting state (EPC)
AT BE CH CY DE DK FR IT LI
DOCDB simple family (publication)
WO 0233338 A2 20020425; WO 0233338 A3 20030410; AU 2362202 A 20020429; DE 10051710 A1 20020502; EP 1332327 A2 20030806
DOCDB simple family (application)
EP 0112033 W 20011017; AU 2362202 A 20011017; DE 10051710 A 20001018; EP 01987863 A 20011017