3. Economic outlook

Turning to the economic outlook, it should be noted that the COREX process stricto sensu consumes, as we have seen above, large quantities of coal and oxygen, but with good energy efficiency, and that it produces an equally large quantity of an excellent gas, averaging [4] :

• 35 to 45% CO ;

• 32 to 35% CO ₂ ;

• 15-20% H ₂ ;

• 1-2% CH ₄ ;

• 3% other gases, mainly N ₂ ;

and 10 to 70 ppm by volume of H ₂ ...