Recovery of Iron, Chromium, and Nickel from Pickling Sludge Using Smelting Reduction

被引：23
|
作者：
Tang, Zhaohui [1 ]
Ding, Xueyong [1 ]
Yan, Xinlin [2 ]
Dong, Yue [1 ]
Liu, Chenghong [1 ]
机构：
[1] Northeastern Univ, Sch Met, Shenyang 110819, Liaoning, Peoples R China
[2] Vienna Univ Technol, Inst Solid State Phys, Wiedner Hauptstr 8-10, A-1040 Vienna, Austria
来源：
METALS | 2018年 / 8卷 / 11期
基金：
国家重点研发计划;
关键词：
pickling sludge; high phosphorus oolitic hematite iron ore; coal-based; smelting reduction; COAL-BASED REDUCTION;
D O I：
10.3390/met8110936
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This paper reports the recoveries of iron, chromium, and nickel from pickling sludge using coal-based smelting reduction. The influences of slag basicity (CaO/SiO2, which is controlled by high phosphorus oolitic hematite iron ores), reduction temperature, reduction time, and the C/O mole ratio on the recoveries of Fe, Cr, and Ni are investigated systematically. The experimental results show that high recoveries of Fe (98.91%), Cr (98.46%), and Ni (99.44%) are produced from pickling sludge with optimized parameters for the smelting reduction process. The optimized parameters are a slag basicity of 1.5; a reduction temperature of 1550 degrees C, a reduction time of 90 min, and a C/O mole ratio of 2.0. These parameters can be used as technical support for the recycling of pickling sludge with pyrometallurgy.
引用
收藏
页数：11
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