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Title: Production and blast-furnace smelting of boron-alloyed iron-ore pellets

Industrial test data are presented regarding the production (at Sokolovsk-Sarbaisk mining and enrichment enterprise) and blast-furnace smelting (at Magnitogorsk metallurgical works) of boron-alloyed iron-ore pellets (500000 t). It is shown that, thanks to the presence of boron, the compressive strength of the roasted pellets is increased by 18.5%, while the strength in reduction is doubled; the limestone consumption is reduced by 11%, the bentonite consumption is halved, and the dust content of the gases in the last section of the roasting machines is reduced by 20%. In blast-furnace smelting, the yield of low-sulfur (<0.02%) hot metal is increased from 65-70 to 85.1% and the furnace productivity from 2.17-2.20 to 2.27 t/(m{sup 3} day); coke consumption is reduced by 3-8 kg/t of hot metal. The plasticity and stamping properties of 08IO auto-industry steel are improved by microadditions of boron.
Authors:
;  [1]
  1. Abishev Chemicometallurgical Institute, Abishev (Kazakhstan)
Publication Date:
OSTI Identifier:
21261955
Resource Type:
Journal Article
Resource Relation:
Journal Name: Steel in Translation; Journal Volume: 38; Journal Issue: 8; Other Information: TN: Translation of Stal; (8), 10-14 (2008); Related Information: Translation of Stal; (8), 10-14 (2008)
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; IRON ORES; PELLETS; BORON; KAZAKHSTAN; BLAST FURNACES; SMELTING; COMPRESSION STRENGTH; COKE; FUEL CONSUMPTION; LIMESTONE; CONSUMPTION RATES; YIELDS; PRODUCTIVITY; PLASTICITY; ADDITIVES; STEELS; SINTERS; BORON OXIDES; ALLOYS; INTERMETALLIC COMPOUNDS