Iron casting blast furnace

Abstract

The invention relates to the field of iron casting of blast furnaces, in particular to an iron casting blast furnace. The iron casting blast furnace comprises a furnace body assembly, a driving assembly, negative pressure drainage assemblies and a residue cleaning assembly. The driving assembly is arranged on the top of the furnace body assembly and the two negative pressure drainage assemblies are arranged. The negative pressure drainage assemblies are driven by the arranged driving assembly to drain molten iron made in a blast furnace main body, a servo motor in the driving assembly drives atransmission lead screw to rotate by means of combination of a transmission belt and a transmission wheel, the transmission lead screw can drive a square piston to perform a lifting type piston motion in the square sleeve when rotating in the square sleeve, and the piston can extract the pressure in a drainage sleeve to a negative pressure through a pressure pipe when ascending in the square sleeve to extract the molten iron made in the blast furnace main body into the drainage sleeve so as to drain the molten iron, so that the discharge efficiency of the molten iron is improved greatly.

Description

technical field [0001] The invention relates to the field of blast furnace cast iron, in particular to a cast iron blast furnace. Background technique [0002] Blast furnace cast iron is the main method of modern cast iron and an important link in steel production. This method is continuously developed and improved from the ancient cast iron method. Although many new cast iron methods have been researched and developed around the world, due to the good technical and economic indicators of blast furnace cast iron, simple process, large production volume, high labor productivity and low energy consumption, the iron produced by this method accounts for one part of the world's total iron production. Mostly. During blast furnace production, iron ore, coke, and flux (limestone) for slagging are loaded from the top of the furnace, and preheated air is blown in from the tuyeres located at the lower part of the furnace along the periphery of the furnace. At high temperature, the c...

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Problems solved by technology

[0003] When the existing cast iron blast furnace is casting iron, the molten iron smelted inside is discharged from the lowest taphole inside the furnace body, and the discharged molten iron will be rich in a large amount of residue, and the discharge efficiency is relatively slow, which affects Ironmaking efficiency, on the other hand, most of the existing cast iron blast furnace slag discharge is to use tools to clean the residue accumulated in the slag outlet, which makes the cleaning efficiency extremely slow, and the excessive contact between the residue and iron will cause iron The quality of the

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