| 摘要 |
PCT No. PCT/JP92/00264 Sec. 371 Date Nov. 5, 1992 Sec. 102(e) Date Nov. 5, 1992 PCT Filed Mar. 5, 1992 PCT Pub. No. WO92/15537 PCT Pub. Date Sep. 17, 1992.The object of the present invention is to develop an innovative mud material which has the properties of a resin-type mud material for improving the working environment, which mud material is capable of increasing the depth of an iron tap hole and of improving the adhesion to mud material deposited in a furnace at high heat, such adhesion being a drawback of the conventional art. This invention provides a mud material used for an iron tap hole in a blast furnace, wherein 8 to 20 wt % of a solution of a novolak-type phenolic resin having a specific number-average molecular weight and serving as a binder is added to and blended with a refractory aggregate used as a conventional mud material. |
