Studies on Lime Refraetories

Abstract

The authors have studied on the non-slaking lime refractories and obtained the following summaries.
(a) Non slaking lime clinker can be prepared by sintering at 1600°C for 20-30 min. under addition of a few percentage of titanium slag.
(b) At this case precipitated calcium carbonate, lime stone and dolomite, passed through 200 mesh sieve about the latter two, are available as raw materials.
(c) Lime refractories have an excellent resistance against chemical corrosion at high temperature and especially are very good for blast furnace slag, molten phosphate fertilizers and portland cement.
(d) Coefficient of thermal expansion of lime clinker increases linearly to temperature rise up to 1000°C, and shows somewhat large values, i.e., 1.2-1.4%.
(e) By adding titanium slag the lime clinker is sufficiently able to use for stamp materials of basic furnaces and for making other special crucibles as well as bricks.