EP 0019087 B1 19830720 - DESULPHURISING AGENTS FOR PIG IRON AND STEEL MELTS, AND PROCESS FOR THEIR MANUFACTURE
Title (en)
DESULPHURISING AGENTS FOR PIG IRON AND STEEL MELTS, AND PROCESS FOR THEIR MANUFACTURE
Publication
Application
Priority
DE 2919324 A 19790514
Abstract (en)
[origin: ES8101121A1] The invention provides an agent for desulfurizing crude iron and steel melts, the desulfurizing agent being based on calcium carbide containing calcium oxide. The desulfurizing agent is produced by admixing a calcium carbide melt having up to 45 weight % of calcium oxide therein with an excess of 3 to 15 weight %, based on the CaO-content of more than 45 up to 80 weight % desired for the final product, of calcium oxide. The resulting mixture is allowed to solidify and cool down to temperatures of 350 DEG to 450 DEG C. Next, the solidified melt is precrushed to material with a size of less than 150 mm. Particles with a size of less than 4 mm are screened off and the remaining material is comminuted, with the exclusion of moisture, to material with a size of less than 10 mm.
IPC 1-7
IPC 8 full level
C21C 1/02 (2006.01); C21C 7/064 (2006.01); C21C 7/076 (2006.01)
CPC (source: EP US)
C21C 1/025 (2013.01 - EP US); C21C 7/0645 (2013.01 - EP US)
Citation (examination)
Designated contracting state (EPC)
AT BE DE FR GB IT LU NL SE
DOCDB simple family (publication)
EP 0019087 A1 19801126; EP 0019087 B1 19830720; AT E4227 T1 19830815; CA 1141964 A 19830301; DE 2919324 A1 19801204; DE 3064206 D1 19830825; ES 491528 A0 19801216; ES 8101121 A1 19801216; JP S55158212 A 19801209; JP S6353244 B2 19881021; NO 153108 B 19851007; NO 153108 C 19860115; NO 801420 L 19801117; US 4323392 A 19820406; ZA 802836 B 19810624
DOCDB simple family (application)
EP 80101985 A 19800414; AT 80101985 T 19800414; CA 350241 A 19800421; DE 2919324 A 19790514; DE 3064206 T 19800414; ES 491528 A 19800514; JP 6234480 A 19800513; NO 801420 A 19800513; US 14856580 A 19800509; ZA 802836 A 19800513