PRODUCTION OF CARBON BLACK AND FURNACE FOR PRODUCING CARBON BLACK

PROBLEM TO BE SOLVED: To stably and efficiently produce carbon black of small particle sizes that is excellent in blackness, dispersibility, gloss and coloring power and is useful as a coloring agent for a long period of time by using a specific material at least in a part of a furnace for producing...

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Bibliographische Detailangaben
Hauptverfasser:	BIZEN YOSHIHIRO, YAMAMOTO TAKAHARU, MISE NOBUTAKE, YAMAGUCHI TAKESHI, FUKUYAMA YUTAKA
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES ARTIFICIAL STONE BLASTING CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS COMPOUNDS THEREOF CONCRETE DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS,IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KINDOF FURNACE DYES FURNACES HEATING INORGANIC CHEMISTRY KILNS LIGHTING LIME, MAGNESIA MECHANICAL ENGINEERING METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-METALLIC ELEMENTS OVENS PAINTS POLISHES PREPARATION OF CARBON BLACK REFRACTORIES RETORTS SLAG TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES TREATMENT OF NATURAL STONE WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To stably and efficiently produce carbon black of small particle sizes that is excellent in blackness, dispersibility, gloss and coloring power and is useful as a coloring agent for a long period of time by using a specific material at least in a part of a furnace for producing the carbon black. SOLUTION: At least a part of furnace walls (for example, the site contacting with a high-temperature gas stream) is made of a magnesia-chromium refractory (for example, comprising 30-95 wt.% of MgO and 3-40 wt.% of Cr2 O3 ). In this furnace, a starting hydrocarbon is introduced into A (for example, a gas stream heated over 1750 deg.C). According to this invention, carbon black of high quality can be produced through, for example, the furnace process.