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METHOD FOR REFORMING GRANULAR MATERIAL FROM IRON ORE POWDER UTILIZED FOR THERMAL CRACKING OF HEAVY GRAVITY OIL
METHOD FOR REFORMING GRANULAR MATERIAL FROM IRON ORE POWDER UTILIZED FOR THERMAL CRACKING OF HEAVY GRAVITY OIL
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机译:利用铁矿粉重质油热裂解制粒材料的方法
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摘要
PURPOSE:To provide large crushing strength to a titled granular material with a method for preheating said material in a grate kiln by heating the material to a prescribed temp. in a preheating temp. then passing air in a calcination chamber and heating up the granular material. CONSTITUTION:The carbon-stuck iron ore powder byproduced in the stage of producing light oil and cracked gas by thermal cracking of residual heavy gravity oil with iron ore powder as a heat medium are molded to a briquette shape. The briquettes are passed through a preheating stage and thereafter reduced iron is produced with the carbon thereof as a reducing agent. The briquettes 15 are continuously supplied into the traveling grate 18 of a grate kiln 14 consisting of a preheating chamber 16 and a calcination chamber 17 in succession thereto in the above-described preheating stage of the process for producing said granular material. Then, the briquettes 15 are heated to 600-700 deg.C by the high temp. gas from a hot stove or burner 20 in the chamber 16 while the briquettes are carried, then the carbon in the briquettes is allowed to burn of itself by the air from a fan 27 in the chamber 17 to attain 1,000-1,300 deg.C by which the briquettes are calcined.
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