Abstract
When chrome-magnesite products are fired in tunnel furnaces, the concentration in the effluent gas of dust is 110–150; of Cr2O3, 5–7; NOx, 20–35; CO, 100–125; SO2, 25–40; and SO3, 30–70 mg/m3. The emission dust is finely dispersed. The average size of the particles of dust is 0.3, the minimum 0.05, and the maximum 1 μm. There is no hydrogen sulfide, NO2, or CrO3 in the emission.
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