Title:
DIRECT REDUCTION PROCESS OF COAL-BASED SHAFT FURNACE
Document Type and Number:
WIPO Patent Application WO/2018/094886
Kind Code:
A1
Abstract:
A direct reduction process of a coal-based shaft furnace for producing sponge iron, comprising the following steps: uniformly mixing iron ore concentrate and a binder, and then mixing those with a reducing agent and a desulfurizing agent after briquetting and drying; feeding the mixture into a reduction chamber (1) of a coal-based shaft furnace by means of a top distributing device; discharging the mixture out of the furnace by means of a discharging device (8) after the mixture passes through a preheating section (4), a reduction section (5), and a cooling section (7) in the reduction chamber (1) of the coal shaft furnace; upon hot sieving or cold sieving, directly feeding the mixture into a smelting device or feeding the mixture into the melting device after briquetting; and completely recycling the screen underflow after magnetic separation.
Inventors:
LI JIANTAO (CN)
Application Number:
PCT/CN2017/074678
Publication Date:
May 31, 2018
Filing Date:
February 24, 2017
Export Citation:
Assignee:
WUHAN COSRED SCIENCE AND TECH LIMITED (CN)
International Classes:
C21B13/02
Foreign References:
| CN102994679A | 2013-03-27 | |||
| CN103131816A | 2013-06-05 | |||
| CN1249350A | 2000-04-05 | |||
| CN105039628A | 2015-11-11 |
Attorney, Agent or Firm:
LANTAI PARTNERS (CN)
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