低碱度含FeO渣热分解H2O/CO2制取H2/CO

doi:10.13228/j.boyuan.issn1006-9356.20200636

Abstract
Figure/Table
References
Related Citation (15)

Download: PDF (3201 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract Steel slag with different basicity was prepared by the high temperature remelting method using converter steel slag as raw material. Slag-H₂O/CO₂ oxidation was carried out to produce H₂/CO gas energy, as well as improve the magnetic properties of slag and increase the comprehensive utilization rate of slag. It was found that the main precipitated phases changed from olivine to magnesia rhodonite and finally to dicalcium silicate with the increasing basicity. And the RO phase had gradually exsolved from the main phase. With the same ferrous iron content, the slag with high basicity can greatly promote the oxidation reaction efficiency. The maximum gas production of the slag sample with a basicity of 1.83 was H₂ (32.3 cm³/g) and CO (22.1 cm³/g), and the conversion rate reached 83.7%, 57% and it was only 40.5% and 32% respectively for the basicity of 1.13. The magnetic separation efficiency of oxidized slag samples was improved and it increased from 14.85% to 78.75% for the sample with basicity of 2.13.

Key words： converter steel slag basicity mineral phase RO phase H₂/CO magnetic separation

Received: 05 November 2020

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	LI Xiang-yang
	LI Peng
	GUO Hong-wei
	YAN Bing-ji

Cite this article:

LI Xiang-yang,LI Peng,GUO Hong-wei等. Preparation of H₂/CO based on thermal decomposition of H₂O/CO₂ by slag containing FeO with low basicity[J]. China Metallurgy, 2021, 31(6): 101-107.

URL:

http://www.zgyj.ac.cn/EN/10.13228/j.boyuan.issn1006-9356.20200636 OR http://www.zgyj.ac.cn/EN/Y2021/V31/I6/101

[1]	GUO Jian-long, BAO Yan-ping, WANG Min. Steel slag in China: Treatment, recycling, and management[J]. Waste Management, 2018, 78:318.
[2]	华旭军.国内某钢厂烧结配加粒化钢渣的工业实践[J].中国冶金,2016,26(1):35.
[3]	马怀营,裴元东,潘文.钢渣替代烧结白灰的试验[J].中国冶金,2017,27(2):18.
[4]	汪坤,李颖,张广田.含钢渣的低熟料混凝土耐久性及水化机理研究[J].中国冶金,2020,30(10):92.
[5]	ZHAO J, YAN P, WANG D. Research on mineral characteristics of converter steel slag and its comprehensive utilization of internal and external recycle[J]. Journal of Cleaner Production, 2017, 156(10):50.
[6]	李超,韩永辉,郝亚菲,等.钢渣-矿渣-沸石胶结剂的开发及应用[J].中国冶金,2019,29(12):69.
[7]	付卫华,王长龙,郑永超,等.转炉钢渣的水化特性研究[J].炼钢,2016,32(1):74.
[8]	WANG G, WANG Y, GAO Z. Use of steel slag as a granular material: Volume expansion prediction and usability criteria[J]. Journal of Hazardous Materials, 2010, 184(1/2/3):555.
[9]	黄毅, 徐国平, 程慧高, 等. 典型钢渣的化学成分、显微形貌及物相分析[J]. 硅酸盐通报, 2014, 33(8): 45.
[10]	马帅, 李宇, 张玲玲, 等.碱度变化对电炉渣含铁组分回收率的影响规律[J].钢铁,2017,52(4):78.
[11]	Liu C, Huang S, Blanpain B, et al. Optimization of mineralogy and microstructure of solidified basic oxygen furnace slag through SiO2 addition or atmosphere control during hot-stage slag treatment[J]. Metallurgical and Materials Transactions B, 2018, 50(1):210.
[12]	Gautier M, Poirier J, Franoise Bodénan, et al. Basic oxygen furnace (BOF) slag cooling: Laboratory characteristics and prediction calculations[J]. International Journal of Mineral Processing, 2013, 123:94.
[13]	Belhadj E, Cécile Diliberto, André Lecomte. Characterization and activation of basic oxygen furnace slag[J]. Cement and Concrete Composites, 2012, 34(1):34.
[14]	张俊,严定鎏,齐渊洪,等.钢铁冶炼渣的处理利用难点分析[J].钢铁,2020,55(1):1.
[15]	刘清梅,张福明,李海波,等.钢铁流程固废资源化利用逆向供应链体系探讨[J].钢铁,2019,54(10):117.
[16]	吕延春,王新华,秦登平,等.转炉炼钢低碱度钢渣的高效脱磷与固磷[J].钢铁,2018,53(6):31.
[17]	XUE Peng, HE Dong-feng, XU An-jun, et al. Modification of industrial BOF slag: Formation of MgFe2O4 and recycling of iron[J]. Journal of Alloys and Compounds,2017,712:640.
[18]	郭辉. 转炉钢渣中铁的还原回收及制备高胶凝性水淬渣的方法研究[D]. 广州:华南理工大学, 2018.
[19]	SUN Y Q, ZHANG Z T. Disposal of high temperature slags: A review of integration of heat recovery and material recycling[J]. Metallurgical and Materials Transactions:E. 2016, 3(3): 114.
[20]	代铭玉. 钢铁制造全流程余热余能资源的回收利用现状[J]. 冶金经济与管理, 2017(2):52.