The Highest Standards of Production

Our Process


Stage 1

Calcium carbonate (CaCo3) or limestone received from the area of Qatrana is fed to the rotary kiln to be calcined by raising its temperature using burning fuel, forming calcium oxide (quicklime) as per the below equation:

*Calcination Temperature ( 900℃-1100 ℃).

Stage 2

Magnesium oxide is obtained from processing seawater (brine), which contains magnesium chloride (MgCl2). In a parallel stage, MgCl2 is fed to the deboronization system to remove the boron element (B2), whereas concentration gets reduced from 100 parts per million to a maximum of 10 parts per million. 

Stage 3

Quicklime is then mixed with fresh water to produce calcium hydroxide (slake lime) - also known as milk of lime - as per the below equation:

Stage 4

Calcium hydroxide gets reacted with magnesium chloride and transferred to the thickening unit in order to obtain magnesium hydroxide (Mg(Oh)2) - the required basic compound - as per the below equation:

 

Stage 5

The magnesium hydroxide slurry is then transferred to the washing and filtration unit, where salts (especially calcium chloride) and insoluble solids are removed to form a damp filter cake. Following, the cake is directed to the expressor unit, through which 15% of the water gets removed, forming a cake with 65% solids.

Stage 6

The filtered cake is transferred to a source of heat to undergo calcination in the multiple hearth furnace to obtain magnesium oxide - also known as caustic calcined magnesia (CCM) - as per the below equation:

Stage 7

Magnesium oxide is then directed to the briquette pressing unit to obtain 15 millimolar of green briquette and transform the magnesium oxide into larger crystals. 

Stage 8

The final stage in the process is the production of high-grade dead burned magnesia (DBM) by burning the green briquette in the vertical kiln at temperatures ranging between 1900°C to 2100°C.

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