Iron ores have catalysis to the de-NOx efficiency. Vanadium and titanium bearing magnetic ore with higher content of TiO_2 and V_2O_5 has the strongest catalytic ability, and the de-NO efficiency is about 100% under the experiment condition.

• 铁矿石对脱除NOx有催化作用,钒钛磁铁矿中TiO2和V2O5的含量较高,催化能力最强,NO的脱除率接近100%25。