| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing carbon black, for which a wide variety of non-fossil materials can be used, and to provide carbon black obtained by the method, and having physicochemical characteristics which are by no means inferior to those of carbon black originating from fossil materials, a rubber composition with the carbon black compounded therein, and a tire using the rubber composition.SOLUTION: In a method for producing carbon black, a reaction apparatus including a combustion gas generation zone, a reaction zone, and a reaction stopping zone coaxially provided in a connected row arrangement is used, and the reaction is controlled in such a way that a ratio of a reactor diameter (Dr) in the reaction stopping zone to a reactor diameter (Df) in a raw material hydrocarbon introducing section satisfies a relation 2.75≤Dr/Df≤5.00. |
