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Patent Searching and Data


Title:
APPARATUS FOR PRECALCINING MINERAL MATERIAL AND METHOD THEREFOR
Document Type and Number:
Japanese Patent JPH06206742
Kind Code:
A
Abstract:

PURPOSE: To minimize NOx by supplying the high temp. air issuing from a cooler with specifically disposed three ducts with a precalciner having a combustion chamber, a reaction chamber to which combustion gases rich with the NOx from a firing furnace is supplied and a cyclone.

CONSTITUTION: The precalciner 2 partially preculcines the high temp. material supplied from a preheater by the high temp. air F issuing from the cooler in the combustion chamber 20 and a burner 30 by fuel. On the other hand, the material is preheated with the combustion gases of the high temp. rich with the NOx supplied from the firing furnace in the reaction chamber 22 and the precalcined material 12 is supplied via the cyclone 25 to the firing furnace where the material is continuously fired. At this time, the high temp. air F is passed to the precalciner 2 via the duct 27 which is opened in a tangent direction into the combustion chamber 20, the duct 28 which opens into the combustion chamber 20 via a vortex type casing 29 and exists in the position of the burner 30 adapted to the combustion chamber 20 and the duct 31 which is opened in the duct 24 connected the combustion chamber 20 to the cyclone 25.


Inventors:
MOORISU PARIAARU
Application Number:
JP12726693A
Publication Date:
July 26, 1994
Filing Date:
May 28, 1993
Export Citation:
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Assignee:
CLE
International Classes:
C04B2/10; C04B7/43; C04B7/44; C22B1/00; F27B7/20; F27D13/00; B01J6/00; (IPC1-7): C04B2/10; B01J6/00; C04B7/44; C22B1/00; F27D13/00
Attorney, Agent or Firm:
Soga Doteru (6 people outside)