CHARGE FOR STEEL MELTING IN BASIC OPEN-HEARTH FURNACE Russian patent published in 2020 - IPC C21C5/04 

Abstract RU 2731710 C1

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

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RU 2 731 710 C1

Authors

Filippenkov Anatolii Anatolevich

Tsikarev Vladislav Grigorevich

Trop Larisa Anatolevna

Baikov Khakimzhan Khamazanovich

Martynenko Sergei Vitalevich

Panshin Pavel Anatolevich

Chashchin Andrei Aleksandrovich

Chernov Aleksandr Vasilevich

Dates

2020-09-08Published

2020-03-11Filed