Manufacturing technique for oxygen-enriched side blowing molten pool raw copper smelting and special equipment thereof
A melting pool smelting and production process technology, applied in the field of copper smelting, can solve the problems of coal-fired flue gas exhaustion that aggravates environmental pollution, high energy consumption of closed blast furnaces, and heavy caking of straight-up flue, so as to facilitate large-scale production , good environmental protection effect and compact structure
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Embodiment 1
[0043] Embodiment 1: a kind of production technique of smelting blister copper in oxygen-enriched side-blown molten pool (see figure 1 ), including the following steps:
[0044] Copper concentrate smelting:
[0045] According to weight percentage, 75% of copper concentrate, 1% of soot, 6% of fine slag, 8% of quartz stone, 4% of limestone, and 6% of pulverized coal are mixed evenly and then fed into the side-blown furnace from the furnace top feed port through the feed belt. High-pressure (0.18Mpa) oxygen-enriched air (oxygen concentration 45%) is blown into the wind eye to form a violent agitation for the melt in the molten pool, and the mass and heat transfer processes in the molten pool are carried out rapidly, completing a series of chemical reactions and forming Copper matte (grade 65%), slag and high-temperature flue gas (1100°C-1200°C), copper matte and slag flow into the depleted electric furnace continuously through the chute, and the high-temperature flue gas recover...
Embodiment 2
[0050] Embodiment 2: a kind of production technique of smelting blister copper in oxygen-enriched side-blown molten pool (see figure 1 ), including the following steps:
[0051] Copper concentrate smelting:
[0052] According to weight percentage, 80% of copper concentrate, 2% of soot, 2% of fine slag, 4% of quartz stone, 5% of limestone, and 7% of pulverized coal are mixed evenly and fed into the side-blowing furnace through the feeding belt through the feeding port on the top of the furnace. High-pressure (0.17Mpa) oxygen-enriched air (oxygen concentration 38%) is blown into the wind eye to form a violent agitation for the melt in the molten pool, and the mass and heat transfer processes in the molten pool are carried out rapidly, completing a series of chemical reactions and forming Copper matte (grade 58%), slag and high-temperature flue gas (1100°C-1200°C), copper matte and slag flow into the depleted electric furnace continuously through the chute, and high-temperature ...
Embodiment 3
[0057] Embodiment 3: a kind of production technique of smelting blister copper in oxygen-enriched side-blown molten pool (see figure 1 ), including the following steps:
[0058] Copper concentrate smelting:
[0059] 85% of copper concentrate, 4% of quartz stone, 5% of limestone, and 6% of pulverized coal are mixed according to weight percentage. ) Oxygen-enriched air (oxygen concentration 30%) forms violent stirring to the melt in the molten pool, and the mass transfer and heat transfer processes in the molten pool proceed rapidly, completing a series of chemical reactions to form copper matte (grade 50%), slag And high-temperature flue gas (1100°C-1200°C), copper matte and slag flow into the depleted electric furnace continuously from the chute, and the high-temperature flue gas recovers waste heat and sends it to acid production.
[0060] Slag depletion:
[0061] After the copper matte and slag flow into the depleted electric furnace, the slag is clarified and separated f...
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