Molten iron pretreatment slag removing device and process thereof

Abstract

The invention relates to a molten iron pretreatment slag removing device and a process using the device to remove slag. The slag removing device comprises a molten iron tipper, molten iron tipper tracks, a slag receiving trolley, slag receiving trolley tracks and a slag removing machine, wherein the molten iron tipper tracks and the slag receiving trolley tracks are connected with a slag removing area, a working platform is arranged near the slag removing area, the slag receiving trolley tracks pass through the underside of the working platform, and the slag removing machine is arranged on the working platform. The corresponding process comprises the following steps that: the molten iron tipper and the slag receiving trolley move forwards to proper slag receiving working positions in the slag removing area along the molten iron tipper tracks and the slag receiving trolley tracks respectively; a tipping mechanism of the molten iron tipper is controlled to overturn a molten iron tank and expose the slag surface; the slag removing machine is controlled to remove the slag; and after removing the slag, the slag receiving trolley moves to a slag disposal pit to pour the slag, the molten iron tank restores, and the molten iron tipper moves away. The molten iron slag removing device has reasonable and simple device configuration and less investment of basic facilities, and is comparatively suitable for small steel mills; besides, the process special for the device is concise to achieve requirements of a molten iron pretreatment slag removing process.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a slag removal device for pretreatment of molten iron and a slag removal process using the device. Background technique [0002] The processes widely used in the current steelmaking production are: blast furnace → hot metal pretreatment → slag removal → converter smelting. Sulfur is removed as much as possible during the hot metal pretreatment stage. Since the molten iron slag brought into the blast furnace and the desulfurization slag produced by ladle desulfurization in the process of mixing molten iron are rich in sulfur, most of the sulfur in these slags will enter the molten steel under the high oxidizing condition of the converter, resulting in subsequent The production cost of the process is increased. Therefore, the slag floating on the surface of the molten iron must be removed before the molten iron is blended into the converter. Most enterprises remove...

AI Technical Summary

Problems solved by technology

The above patents can solve the technical problems of incomplete slag removal and low slag removal rate

But at the same time, because these methods focus on improving the efficiency of slag removal, the implementation has a certain complexity, so the investment in special infrastructure and equipment is very expensive, and it is suitable for enterprises with large production scales.

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