FIELD: metallurgy.
SUBSTANCE: invention relates to metallurgy and can be used in melting steels in basic open-hearth furnaces by scrap-process, including steels for car casting. Charge contains, wt%: conversion pig iron and scrap iron 34.0–40.0, steel scrap 60.0–66.0, carb in excess of 100 % 0.5–1.0, wherein as carb it contains slag-coal-graphite flux fraction 10–100 mm, containing, wt%: carbon 50.0–65.0, sulfur not more than 1, flux component based on dump open-hearth slag – the rest.
EFFECT: invention increases recovery of carbon from carb, reduces harmful emissions into atmosphere, improves quality of metal, including for car casts, and improves technical and economic indices of melting.
1 cl, 2 tbl, 3 ex
Title | Year | Author | Number |
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STEEL MELTING BURDEN | 2002 |
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CHARGE FOR STEELMAKING IN OPEN HEARTH FURNACE AND METHOD OF CHARGING | 0 |
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CHARGE FOR STEEL SMELTING BY SCRAP-CARBURATOR PROCESS | 0 |
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METHOD OF MELTING STEEL IN OPEN-HEARTH FURNACE | 1993 |
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METHOD OF PIG IRON SMELTING IN ARC FURNACE | 1998 |
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RU2142516C1 |
SCRAP PROCESS OF STEELMAKING | 0 |
|
SU1786089A1 |
Authors
Dates
2020-09-08—Published
2020-03-11—Filed