Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB30786/58A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
A R B E D ACIERIES REUNIES DE
Centre de Recherches Metallurgiques CRM ASBL
Arcelor Luxembourg SA
Original Assignee
A R B E D ACIERIES REUNIES DE
Centre de Recherches Metallurgiques CRM ASBL
Arbed SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by A R B E D ACIERIES REUNIES DE, Centre de Recherches Metallurgiques CRM ASBL, Arbed SAfiledCriticalA R B E D ACIERIES REUNIES DE
Publication of GB869802ApublicationCriticalpatent/GB869802A/en
C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
C21C5/28—Manufacture of steel in the converter
C21C5/30—Regulating or controlling the blowing
C21C5/32—Blowing from above
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Engineering & Computer Science
(AREA)
Chemical & Material Sciences
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Manufacturing & Machinery
(AREA)
Materials Engineering
(AREA)
Metallurgy
(AREA)
Organic Chemistry
(AREA)
Carbon Steel Or Casting Steel Manufacturing
(AREA)
Abstract
Steel is refined by surface blowing (with or without calcareous powder suspended in the gas), water vapour or liquid water being blown at the same time, but through a separate pipe, so as to impinge at the same place as the oxygen. Liquid water may be in the form of a spray from multiple jets, or in the form of a mist of droplets, while steam, if used, is preferably heated above 200 DEG C. Water may be fed at the rate of 3-10% of oxygen, its proportion being automatically but adjustably related to the oxygen feed. The separate water and oxygen supply pipes may be concentric and the injection of water may be restricted to the last 3 to 7 minution of conversion. The conversion may be carried out in a solid or tuyered bottom converter, or in a rotary furnace.
Procedure for the separation of carbon dioxide and ammonia from a mixture of them with water vapor. (Machine-translation by Google Translate, not legally binding)