EXPERIMENTAL STUDY OF BRIQUETTING TECHNOLOGY FOR IRON-BEARING METALLURGICAL WASTE TREATMENT

The study was aimed to select an efficient briquetting mode for iron-bearing metallurgical waste. The laboratory tests determined the optimal composition of batch and the optimal binder for low-temperature pressing with minimum process stages. The tested metallurgical waste was blast furnace dust, furnace slag, mill scale and gas cleaning dust. The binders in the briquetting tests were lime powder, liquid glass, lignosulphonate, furnace slag, silicomanganese manufacture slag, binder SB and coal tar. The studies have allowed refinement of the testing technique for briquetting technologies and the briquette strength. From among the examined binders, we select binder SB (refinery waste product). Binder SB enables briquetting finely dispersion materials with high content of coke fines (to 18% of carbon content) as this binder is efficient with carbon-bearing materials. According to the tests, it is possible to manufacture briquettes with crushing strength of 100–130 kg/cmfrom finely dispersion iron-bearing waste with binder SB at its consumption of 10%. The high-temperature tests show that these briquettes keep their shape after annealing at 1240 °С at metallization of 68.7–91.2% and iron recovery of 74–87.6%.


For citation: Korchevskii A. N., Zviagintseva N. A. Experimental study of briquetting technology for iron-bearing metallurgical waste treatment. MIAB. Mining Inf. Anal. Bull. 2019;(9):122-130. [In Russ]. DOI: 10.25018/0236-1493-2019-09-0-122-130.

Keywords

Briquette, iron-bearing waste, binder, briquetting, thermal treatment, pressing, analysis.

Issue number: 9
Year: 2019
ISBN: 0236-1493
UDK: 622.788.32
DOI: 10.25018/0236-1493-2019-09-0-122-130
Authors: Korchevskii A. N., Zviagintseva N. A.

About authors: A.N. Korchevskii, Cand. Sci. (Eng.), Assistant Professor, Head of Chair, N.A. Zviagintseva, Senior Researcher, Donetsk National Technical University, 83000, Donetsk. Corresponding author: N.A. Zviagintseva, e-mail: zviagintseva@donntu.org.

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