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Monitoring the condition of the slag crust in blast furnaces

Journal Article · · Metallurgist (Engl. Transl.); (United States)
OSTI ID:6038510
; ; ; ; ; ;

Studies conducted at the Krivorozhstal' combine blast furnaces have shown that fusion of the crust can be established from the change in the total content of alkali metals in the slag. After the furnaces were blown out for repairs the remaining lining and crust were inspected. It was found that the lining of the uncooled part of the stock remained in relatively good shape with the greatest amount of lining wear seen between the second row of stack coolers and bosh coolers. The composition and structure of the slag crust for different regions of the furnaces were analyzed and various physicochemical properties leading to crust formation and behavior were assessed. It was concluded that the systematic determination of the fraction of K/sub 2/O in the alkali compounds in the furnace slag will permit monitoring of the conditions of the slag crust in the furnace and, in the event of the onset of its collapse, will enable measures to be taken to stabilize the heating of the furnace.

OSTI ID:
6038510
Journal Information:
Metallurgist (Engl. Transl.); (United States), Journal Name: Metallurgist (Engl. Transl.); (United States) Vol. 31:9; ISSN MTLUA
Country of Publication:
United States
Language:
English

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Related Subjects

36 MATERIALS SCIENCE
360101 -- Metals & Alloys-- Preparation & Fabrication
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
42 ENGINEERING
421000* -- Engineering-- Combustion Systems
ADHESION
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
BLAST FURNACES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CARBON
CHALCOGENIDES
CHEMICAL ANALYSIS
CONTROL
DEPOSITS
DIMENSIONS
ELEMENTS
FURNACES
INSPECTION
IRON
LINERS
METALS
MONITORING
NONMETALS
OXIDES
OXYGEN COMPOUNDS
POTASSIUM COMPOUNDS
POTASSIUM OXIDES
REPAIR
SAMPLING
SILICON COMPOUNDS
SILICON OXIDES
SLAGS
SODIUM COMPOUNDS
SODIUM OXIDES
TEMPERATURE CONTROL
TEMPERATURE EFFECTS
THERMAL INSULATION
THICKNESS
TRANSITION ELEMENTS
WEAR