Novel precast block for main iron runner of blast furnace

The utility model discloses a novel precast block for a main iron runner of a blast furnace, which comprises a precast block body, three copper plates are sequentially mounted at the center of the back of the precast block body from top to bottom, and the outer surfaces of the copper plates and the back of the precast block body are positioned in the same plane. The upper layer copper plate, the middle layer copper plate and the lower layer copper plate are installed on the back face of the prefabricated block so as to improve the heat conductivity during temperature detection, the three copper plates can be detected through three thermocouples, the temperature detection precision can be improved, and the accuracy can be improved. 本实用新型公开了高炉主铁沟用新型预制块，包括预制块本体，本体的背面中心位置从上到下依次安装有三个铜板，铜板的外表面与预制块本体的背面处于同一平面内，本实用新型设计结构简单、使用便捷，在预制块的背面安装上、中、下三层铜板，用以提高在进行温度检测时的导热性，并且三处铜板能够利用三个热电偶进行检测，有利于提高温度检测的精度，提高准确率。