Title:
リン含有物質からのリン除去方法、および、鋼の製造方法
Document Type and Number:
Japanese Patent JP7040499
Kind Code:
B2
Abstract:
To provide a phosphorus removing method for a phosphorus-containing substance which is applicable in an industrial scale so as to effectively reduce phosphorus contained in a phosphorus-containing substance used as a main raw material or an auxiliary raw material of metal making or metal refining.SOLUTION: A phosphorus removing method from a phosphorus-containing substance is a method for nitride-removing phosphorus in a phosphorus-containing substance by reacting a phosphorus-containing substance used as a raw material for metal making or metal refining with nitrogen-containing gas, and includes reducing a total pressure PA(Pa) in the atmosphere to lower than an atmospheric pressure, heating the phosphorus-containing substance to a treatment temperature in a non-molten state, reacting the phosphorus-containing substance with the nitrogen-containing gas to produce phosphorus nitride (PN), and removing at least a part of P from the phosphorus-containing substance.SELECTED DRAWING: Figure 1
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Inventors:
Kenji Nakase
Yamada Ordinance
Yui Nakai
Naoki Kikuchi
Yamada Ordinance
Yui Nakai
Naoki Kikuchi
Application Number:
JP2019117366A
Publication Date:
March 23, 2022
Filing Date:
June 25, 2019
Export Citation:
Assignee:
jfe Steel Corporation
International Classes:
C22B1/02; C21B5/00
Domestic Patent References:
| JP56075507A | ||||
| JP54083603A | ||||
| JP47010451A | ||||
| JP9316519A |
Attorney, Agent or Firm:
Ginza Marronnier Patent Office