Title:
【発明の名称】モリブデン添加剤,その使用方法及びその製造方法
Document Type and Number:
Japanese Patent JP2586940
Kind Code:
B2
Abstract:
Molybdenite is roasted under controlled conditions to provide a polymolybdenum oxide composition having an oxygen content in excess of the stoichiometric oxygen content for MoO2 and less than that for MoO3, such that the composition contains MoO3 equivalent in excess of 5% and ranging up to 15% by weight, preferably, from about 10% to 15% by weight. The polymolybdenum oxide composition can be used to introduce molybdenum into baths of molten steel and the like with high recovery of the molybdenum content in the bath and with quiet addition characteristics as compared to the use of MoO3 per se. Preferably, a Herreshoff type roaster is used and the production rate of the furnace producing the new product is substantially increased, with an exit gas richer in SO2, as compared to use of the same roaster in roasting molybdenite to form MoO3 per se.
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Inventors:
HARII EITSUCHI KEI NAUTA
TOOMASU AKUSERU RAGUNAA ROORIN
TOOMASU AKUSERU RAGUNAA ROORIN
Application Number:
JP29642288A
Publication Date:
March 05, 1997
Filing Date:
November 25, 1988
Export Citation:
Assignee:
AMAX INC
International Classes:
C21C7/00; C22C33/00; C22B1/02; C22C33/04; C22C35/00; (IPC1-7): C22C35/00; C22C33/04
Domestic Patent References:
| JPS5016607A | ||||
| JPS5033110A |
Attorney, Agent or Firm:
Tan Ashida (2 outside)