Method for treating iron-containing dusts in steel plant by using melting gasification furnace
A technology for melting gasifiers and iron and steel plants, which is applied in the field of iron-containing dust in iron and steel plants, which can solve pollution and other problems, achieve the effects of reducing costs, low investment, and improving the strength of agglomerates
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[0027] Example 1:
[0028] This embodiment uses (see Table 1 for composition) blast furnace bag ash, blast furnace gravity ash, and a certain amount of iron ore powder, reducing agent and binder, and adjust the carbon content to 15%-20%. 1% to 3%, mix thoroughly, add water, press into a block, and after drying, distribute the block into a high-air temperature melting gasifier through a cloth system to smelt molten iron. The content of harmful elements such as potassium, sodium, lead, and zinc in hot metal is very low and can be ignored. The zinc content in blast furnace dust ash has increased.
[0029] Table 1 Examples of raw material components (mass fraction)
[0030]
[0031]
Example Embodiment
[0032] Example 2:
[0033] The raw materials used in this example are the same as those in example 1. The mixed raw materials are mixed with coke powder so that the total carbon content is about 10%, and they are laid on the sintering machine according to the normal sintering cloth method. The speed is 1.55m / min, the ignition temperature is 1110℃, and the air pressure is 2.5KPa. After cooling the burned sinter, it is placed into a high-air temperature melting and gasifier through a distribution system to smelt molten iron. The content of potassium, sodium, lead and zinc in the molten iron is very small and can be ignored, and the zinc content in the blast furnace dust ash has increased.
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