Iron ore rotary kiln coal-based hydrogen metallurgy process and device thereof
A rotary kiln and iron ore technology, applied in the field of metallurgical thermal energy, can solve the problems of poor production stability, low production capacity, poor applicability of raw fuels, etc.
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Embodiment 1
[0087] (1) Material pelletizing:
[0088] After mixing the iron ore with a particle size of -200 mesh accounting for 65-80%, binder, and liquid phase conditioner in a weight ratio of 100:2:0.5, use a pelletizer 17 to add water to pelletize to obtain a particle size of Φ10- 20mm wet bulb;
[0089] (2) Drying and preheating of pellets:
[0090] Lay the wet bulbs on the grate machine 2, pass the 950°C high-temperature flue gas in the conditioning chamber 13 into the chain grate machine 2 to dry and preheat the wet bulbs, and the exhausted flue gas is dedusted and purified by the dust removal device 10. Exhaust from machine 18; the flue gas is discharged after dust removal and purification;
[0091] (3) Materials enter the kiln:
[0092] The pellets are dried on the grate machine 2 and preheated to 800°C, and the sluggish granular carbon with a particle size of 1-30mm is added to the rotary kiln 1 from the feed end; The discharge end is sprayed to the front and middle of the r...
Embodiment 2
[0098] (1) Material pelletizing:
[0099] Mix the iron ore with a particle size of -200 mesh accounting for 65-80%, binder, and liquid phase conditioner in a weight ratio of 100:3:1, and then use a pelletizer 17 to add water to pelletize to obtain a particle size of Φ10- 20mm wet bulb;
[0100] (2) Drying and preheating of pellets:
[0101] Lay the wet bulbs on the grate machine 2, pass the 1050°C high-temperature flue gas in the tempering chamber 13 into the chain grate machine 2 to dry and preheat the wet bulbs, and the exhausted flue gas is dedusted and purified by the dust removal device 10. 18 exhaust; the flue gas is discharged after dust removal and purification;
[0102] (3) Materials enter the kiln:
[0103] The pellets are dried on the grate machine 2 and preheated to 900°C, and the sluggish granular carbon with a particle size of 1-30mm is added to the rotary kiln 1 from the feed end; The discharge end is sprayed to the front and middle of the roasting area of ...
Embodiment 3
[0109] (1) Material pelletizing:
[0110] Mix the iron ore with a particle size of -200 mesh accounting for 65-80%, binder, and liquid phase conditioner in a weight ratio of 100:2-3:0.5-1, and then use the pelletizer 17 to add water to pelletize. Get a wet bulb with a particle size of Φ10-20mm;
[0111] (2) Drying and preheating of pellets:
[0112] Lay the wet bulbs on the grate machine 2, pass the 1000°C high-temperature flue gas in the tempering chamber 13 into the chain grate machine 2 to dry and preheat the wet bulbs, and the exhausted flue gas is dedusted and purified by the dust removal device 10. Exhaust from machine 18; the flue gas is discharged after dust removal and purification;
[0113] (3) Materials enter the kiln:
[0114] The pellets are dried on the grate machine 2 and preheated to 850°C, and the sluggish granular carbon with a particle size of 1-30mm is added to the rotary kiln 1 from the feed end; The discharge end is sprayed to the front and middle of ...
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