MATERIAL BLENDING DETERMINATION METHOD OF SINTER

PROBLEM TO BE SOLVED: To provide a method that simply and accurately determines blending of materials of sinter, which does not degrade the productivity of the sinter while reusing a lot of scale powder.SOLUTION: A combination and a ratio of materials in a test preliminary granulation step and a tes...

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Bibliographische Detailangaben
Hauptverfasser: KAIMOTO HITOSHI, SHIOZAKI RYOTA, KAWAGISHI SATOSHI, MATSUYAMA KAZUHIKO, SASA YUTAKA
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide a method that simply and accurately determines blending of materials of sinter, which does not degrade the productivity of the sinter while reusing a lot of scale powder.SOLUTION: A combination and a ratio of materials in a test preliminary granulation step and a test production granulation step where a melt penetration distance D relating to a test piece 10 formed by sintering a tablet 10A formed of a first nucleus 11 obtained in a test stage and formed according to a test preliminary granulation step, and a first coating part 12 formed by adhering iron ore, an auxiliary material or the like and a carbonaceous material to a circumference of the first nucleus 11 according to a granulation step becomes shorter than a predetermined length are adopted in a combination and a ratio of materials in a production preliminary granulation step and a production granulation step relating to a sinter formed by sintering a granulated material formed a second coating part formed by adhering iron ore, an auxiliary material or the like and a carbonaceous material in the surroundings of a second nucleus by a production granulation step in the production step.SELECTED DRAWING: Figure 4 【課題】スケール粉を多量に再利用しつつ焼結鉱の生産性を低下させることのない焼結鉱の材料の配合を簡易かつ正確に決定する方法を提供する。【解決手段】試験段階において得られた、試験予備造粒工程によって形成された第一核11と、試験本造粒工程によって第一核11の周囲に鉄鉱石、副原料等と炭材を付着させて形成される第一被覆部12と、からなるタブレット10Aを、焼結処理して形成される試験片10に関する、融液浸透距離Dが所定長さ以下となる、試験予備造粒工程及び試験本造粒工程における材料の組合せ及び比率を、生産段階における、生産本造粒工程によって第二核の周囲に鉄鉱石、副原料等と炭材を付着させて形成される第二被覆部と、からなる造粒物を焼結処理して形成される焼結鉱に関する、生産予備造粒工程及び生産本造粒工程における材料の組合せ及び比率に採用する。【選択図】図4