Title:
METHOD FOR MIXED SLAG SMELTING REDUCTION PRODUCTION AND TEMPERING
Document Type and Number:
WIPO Patent Application WO/2018/014419
Kind Code:
A1
Abstract:
Disclosed is a method for mixed slag smelting reduction production and tempering, comprising the following steps: 1) an iron-containing material and a reducing agent are added to the mixed slag of blast furnace slag and molten steel slag, and are heated to reach a molten state; and an oxidizing gas is injected for iron smelting by means of smelting reduction to treat most iron-containing materials; and 2) an iron component, a calcium silicon component and a phosphorus component in the mixed slag are separated and recovered according to a reaction device. After the smelting reduction, the reduced slag can serve as a cement additive, a cement regulator, a cement clinker or can be used for the production of a cement clinker with a high additional value, so that the method realizes efficient and comprehensive utilization of the resources. The method enables the production of pig iron or steel and phosphorus-enriched phases and tempering by means of the smelting reduction of mixed slag, and same has a short reaction time, a high metal recovery rate, a low production cost, a high raw material adaptability, a high handling capacity, is environmentally friendly and has a high economic benefit, and can effectively solve the problem of efficient recycling of metallurgic resources and heat energy.
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Inventors:
ZHANG LI (CN)
ZHANG WU (CN)
ZHANG WU (CN)
Application Number:
PCT/CN2016/097119
Publication Date:
January 25, 2018
Filing Date:
August 29, 2016
Export Citation:
Assignee:
UNIV NORTHEASTERN (CN)
International Classes:
C21B3/06; C21B11/00
Foreign References:
| CN102154531A | 2011-08-17 | |||
| CN103343174A | 2013-10-09 | |||
| CN103757170A | 2014-04-30 | |||
| CN101092654A | 2007-12-26 | |||
| CN101348842A | 2009-01-21 | |||
| JP2009227494A | 2009-10-08 |
Attorney, Agent or Firm:
SHENYANG DONGDA INTELLECTUAL PROPERTY AGENCY CO.,LTD (CN)
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