Title: A method and an equipment for temperature-controlled combustion of pulveriyed coal injected into blast furnace
Application Number: 85102640 Application Date: 1985.04.12
Publication Number: 1000024 Publication Date: 1985.09.10
Approval Pub. Date: Granted Pub. Date: 1986.01.10
International Classifi-cation: C21B5/00,C21B7/00,C21B7/16,F23D1/00
Applicant(s) Name: Beijing College of Iron and Steel Technology Address:
Inventor(s) Name: Wu Liangzhu
Attorney & Agent: CHEN XIAOMEI
Abstract:
     The characteristic of the method is that the amount of hot blast blended with the flowing pulverized coal,namely the excess air coefficient,is controlled so as to carry out temperature-controlled combustion by stages inside the temperature-controlled burner and outside the burner,before the pulverized coal is injected into tuyeres and completely blended with hot blast of about 1000 C which comes from hot blast furnace The equipment used is made up of the temperature-controlled burner,block,duct for trasporting pulverized coal,and thermocouple.This invention may increase burning ratio of pulverized coal injected into blast furnace by from 5 to 25 per cent so that more of expensive metallurgical coke can be replaced by pulverized coal.
Time: 5