Title:
METHOD OF PRODUCING SINTER
Document Type and Number:
Japanese Patent JP2014237888
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a novel and improved granulation system in which productivity and a finished product yield of sinter can be improved.SOLUTION: According to a point of view of the present invention, a method of producing sinter using two or more granulation lines is provided and includes: a step in which a first raw material for sintering that includes a first iron ore for sintering and excludes a settling material, a binder that includes at least hydrated lime out of calcium oxide and hydrated lime are granulated in a first granulation line, thereby a hydrated lime-used granulation object is created; a step in which a raw material that includes a second iron ore for sintering, calcium oxide, and a settling material is granulated in a second granulation line, thereby a calcium oxide used-granulation object is created; and a step in which the hydrated lime-used granulation object and the calcium oxide-used granulation object are transported to a sintering machine. In this case, in a condition in which a ratio of a blending raw material fine powder (-0.25 mm) in the first granulation line is at least 67.4 mass%, a range of a digestion rate of the binder that makes a sinter production rate the maximum is defined.
Inventors:
ISHIYAMA OSAMU
Application Number:
JP2014092931A
Publication Date:
December 18, 2014
Filing Date:
April 28, 2014
Export Citation:
Assignee:
NIPPON STEEL & SUMITOMO METAL CORP
International Classes:
C22B1/16
Domestic Patent References:
| JP2003313614A | 2003-11-06 | |||
| JPH05239560A | 1993-09-17 | |||
| JPS61177336A | 1986-08-09 | |||
| JP2005350770A | 2005-12-22 | |||
| JPS6256533A | 1987-03-12 | |||
| JP2003313614A | 2003-11-06 | |||
| JPH05239560A | 1993-09-17 | |||
| JPS61177336A | 1986-08-09 | |||
| JP2005350770A | 2005-12-22 | |||
| JPS6256533A | 1987-03-12 |
Other References:
岡崎 潤， 外２名: "新規マラマンバ鉱石の鉱物特性評価と使用技術", 新日鉄技報, vol. 第384号, JPN6018010308, 2006, pages 20 - 27
H. RUMPF, H. SCHUBERT: "THE BEHAVIOR OF AGGLOMERATES UNDER TENSILE STRAIN", JOURNAL OF CHEMICAL ENGINEERING OF JAPAN, vol. 7, no. 4, JPN6018010309, 1974, pages 294 - 298
H. RUMPF, H. SCHUBERT: "THE BEHAVIOR OF AGGLOMERATES UNDER TENSILE STRAIN", JOURNAL OF CHEMICAL ENGINEERING OF JAPAN, vol. 7, no. 4, JPN6018010309, 1974, pages 294 - 298
Attorney, Agent or Firm:
Yoshiaki Kameya
Tetsuo Kanamoto
Yasushi Hagiwara
Matsumoto Single horseman
Tetsuo Kanamoto
Yasushi Hagiwara
Matsumoto Single horseman