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Ceramic foams were prepared by powder technology using lead–zinc mine tailings, red mud and silica sand as the major component, Na2B4O7 as the flux agent. The influence of the sintering temperature on the phase evolution, pore morphology, bulk density, water absorption, porosity, thermal conductivity, mechanical properties and chemical stability was studied. The experimental results showed that a...
MgO–C refractory system is the most important one in various stages of steel melting operations. Flaky graphite is a key ingredient in these refractories that imparts high thermal shock resistance and excellent corrosion resistance against molten metal and slag. However, the proneness of graphite to high temperature oxidation renders these refractories porous; thus the materials recession leads to...
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