A PROCESS FOR MAKING OF MAGNESIA BASED PATCHING MASS COMPOSITION FOR REPAIR OF BASIC OXYGEN FURNACE BASED ON MAGNESITE WITH HIGH IRON CONTENT.

摘要

Invention provides a process for preparing a magnesia based patching mass composition for repair of Basic oxygen furnace from magnesite with high iron content which comprises selecting Almora magnesia, tar and soft pitch in the following proportion and sizes. Proportion (%) Size Almora Magnesia 30-35 5-30 BSS 20-25 30-150 BSS 22-28 150 BSS Liquid Tar 0.5 - 1 Pitch 12-16 150 BSS in which finer fractions of Almora magnesia first weighed and taken in the mixer and then the finer pitch fraction were weighed and mixed with the above magnesia fines and separately the coarser fraction of magnesia grains and liquid tar are mixed thoroughly and then the two parts are mixed together thoroughly in a mixer for at least 5 minutes till a homogenous mass is produced which was then discharged from the mixer and stored in airtight condition.