Title:
MGO(MAGNESIUM OXIDE) BRIQUETTE FOR ADJUSTING SLAG CONCENTRATION
Document Type and Number:
Japanese Patent JP3729371
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain an auxiliary raw material having uniform grain size without lowering reusing ratio, and excellent meltability and handling performance at the time of using a charging bunker by crushing a used refractory consisting essentially of MgO to a specific length or shorter, adding and kneading binder and water to this crushed refractory and forming briquette-shape.
SOLUTION: The used refractory consisting essentially of MgO is crushed to ≤5 mm. This crushed refractory is adjusted to the grain size and the binder and the water are added and kneaded to form the briquette-shape. Then, from a point of the formability to the briquette, it is necessary to satisfy the relation of the inequality, (B/A)×100≤0.3. Wherein, A is the vol. (mm3) per one piece of the briquette and B is the vol. (mm3) per one piece in the max. grain diameter in the raw material. Further, from the view point of the compressed strength, the blending ratio of the raw material used to this briquette is desirable to be 70-85 mass % crushed MgO refractory and add the into light burnt magnesia powder having ≤200 mesh at 5-16% in the outer ratio.
Inventors:
Masahiro Isobe
Keiji Abutiya
Shin Katamura
Kazuo Yamane
Keiji Abutiya
Shin Katamura
Kazuo Yamane
Application Number:
JP16783197A
Publication Date:
December 21, 2005
Filing Date:
May 22, 1997
Export Citation:
Assignee:
Nisshin Steel Co., Ltd.
Kokuko Sangyo Co., Ltd.
Kokuko Sangyo Co., Ltd.
International Classes:
B22D1/00; C04B35/00; C04B35/04; C21C5/28; C21C5/36; C21C7/00; (IPC1-7): C21C5/28; B22D1/00; C04B35/00; C04B35/04; C21C5/36; C21C7/00
Domestic Patent References:
| JP57145918A |