Producing refractory bricks
Dolomite is ignited until evaporate all water physically and chemically, releasing all CO2 and recrystallizing to sintered dolomite. Sintered dolomite is black, compact, 3.3 ton/m3 heavy. When it is put into water, MgO and CaO was hydrated and powdered. This powder could used to patch metallurgy kiln or mix with 10-15% tar to create squeeze element used to compact the bottom of the base martin kiln.
Mactenit which is a self-adhesive powder, is created from the mixture of magenit and dolomite (containing 30-50% dolomite).
As dolomite brick and beton cromodolomit have high fire resistance it, could be used for electric kiln and steel lamination kiln. This type of kiln requires that dolomite layer must be high refractory and sustain good sintering slag, which means that it could not be decomposed into mixtures of silicate and alumosilicat Mg, Ca, Fe, Mn, those fusible and vulnerable.
Dolomites with 2 – 3% SiO2and 2 - 5% Al2O3 + Fe2O3 + MnO2 is easily to sintered, and could sustain slag and temperature up to 1750 – 1760oC
Especially, dolomite with 1-6% SiO2 is very good, it has the anti-hydrated ability in kiln. Fe, Al, Ti, Mg oxides have important role as they improve sintering process and reduce hydrated ability of sintered dolomite powders. However if this compound is too high, a large amount of braunmilerit and 3 calcium-aluminate would appear causing decrease in fire resistance of sintered dolomite.