Dilution treatment method for copper smelting slag
A technology of copper smelting slag and treatment method, which is applied in the field of metallurgy, can solve the problems of serious volatilization, serious environmental pollution, and low utilization rate, and achieve the effects of reducing copper content, reducing environmental pollution, and improving kinetic conditions
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[0031] Example 1
[0032] The amount of molten copper smelting slag is 20t, the composition is shown in Table 1, and the depletion furnace used is figure 1 As shown, the depletion treatment method is carried out according to the following process steps:
[0033] (1) Introduce mechanical stirring equipment into the depletion furnace, introduce the high temperature molten copper smelting slag at 1150~1350℃, adjust the stirring blade to extend to 1 / 3 of the height of the copper smelting slag, turn on heating and stirring, Control the temperature of the copper smelting slag to 1250°C, and the stirring speed to 50r / min to form a vortex with a diameter-to-height ratio of 3;
[0034] (2) 600kg of copper concentrate and 400kg of calcium oxide are blown from the nozzle above the liquid surface of the high-temperature molten copper smelting slag to the surface of the copper smelting smelt pool near the center of the vortex through a nitrogen-carrying nozzle, and the temperature is kept and sti...
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[0037] Example 2
[0038] The amount of molten copper smelting slag is 22t, the composition is shown in Table 1, and the depletion furnace used is figure 1 As shown, the depletion treatment method is carried out according to the following process steps:
[0039] (1) Introduce mechanical stirring equipment into the depletion furnace, introduce the high temperature molten copper smelting slag at 1150~1350℃, adjust the stirring blade to reach 1 / 2 of the height of the copper smelting slag, turn on heating and stirring, Control the temperature of the copper smelting slag to 1280°C, and the stirring speed to 200r / min to form a vortex with a diameter-to-height ratio of 0.5;
[0040] (2) 660kg of pyrite and 440kg of calcium oxide are blown from the nozzle above the surface of the high temperature molten copper smelting slag through the argon gas to the surface of the copper smelting slag bath near the center of the vortex, and keep stirring for 60 minutes;
[0041] (3) Standing for stratifica...
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[0043] Example 3
[0044] The amount of molten copper smelting slag is 1t, the composition is shown in Table 2, and the depletion furnace used is figure 1 As shown, the depletion treatment method is carried out according to the following process steps:
[0045] (1) Introduce mechanical stirring equipment into the depletion furnace, introduce the high temperature molten copper smelting slag at 1150~1350℃, adjust the stirring blade to reach 1 / 2 of the height of the copper smelting slag, turn on heating and stirring, Control the temperature of the copper smelting slag to 1260°C, and the stirring speed to 80r / min to form a vortex with a diameter-to-height ratio of 2;
[0046] (2) 17kg of pyrite and 15kg of calcium oxide are blown from the nozzle above the liquid surface of the high-temperature molten copper smelting slag to the surface of the copper smelting slag molten pool near the center of the vortex through the nozzle above the liquid level of the high-temperature molten copper smel...
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