Reinforced sintering equipment, charge level cooling device and control method of charge level cooling device

Abstract

The invention discloses reinforced sintering equipment, a charge level cooling device and a control method of the charge level cooling device. The charge level cooling device is arranged close to an ignition device in the sintering equipment, located on the downstream of the ignition device and above a sintering material layer and comprises a rotary drum, wherein a plurality of rods are arranged on the drum wall of the rotary drum, in the rotating process of the rotary drum, at least a part of the rod bodies can be at least partially inserted into the sintering material layer, and at least a part of the rod bodies are hollow to form spraying channels; and the charge level cooling device further comprises a cooling fluid conveying component arranged in the rotary drum, fluid outlets of thecooling fluid conveying component is tightly attached to the inner wall of the rotary drum, and when the hollow rod bodies rotate to enable the spraying channels of the hollow rod bodies to be right opposite to the fluid outlets, cooling fluid can be sprayed to the upper surface of the sintering material layer through the rod bodies. The charge level cooling device can cool the upper surface of the sintering charge layer, and is beneficial to forward movement of the injection starting point of the gas injection device, so that the gas injection reinforced sintering technology can be better applied.

Description

technical field [0001] The invention relates to the technical field of sintering, in particular to an intensified sintering device, a material surface cooling device and a control method thereof. Background technique [0002] The sintering process is a key link in the ironmaking process. Its principle is to mix various powdery iron-containing raw materials with an appropriate amount of fuel and flux, and add an appropriate amount of water. After mixing and pelletizing, the materials are made on the sintering equipment. A series of physical and chemical changes occur and sintered into blocks to form the main raw material sinter in the current blast furnace ironmaking process. [0003] However, the pollution and energy consumption of the sintering process are relatively high, and its energy consumption ranks second in the iron and steel industry, and its pollution load accounts for 40% of the iron and steel industry, ranking first. With increasingly stringent environmental pro...

AI Technical Summary

Problems solved by technology

[0005] But this technology also has the following problems: 1) if the starting point of gas injection is set too far ahead, that is, too close to the ignition position, the red hot material surface just out of the ignition furnace is easy to directly ignite the ejected gas, so , not only does the injected gas fail to strengthen the sintering effect, but it is also easy to burn out the pipe and row facilities in the gas injection device; 2) If the starting point of the gas injection is set too far back, although the ignition phenomenon can be effectively suppressed, the Since sintering is a ventilation operation, there is self-heat storage phenomenon in the production process, and the upper material layer is the area most in need of supplementary heat. If the gas is injected too late, the combustion zone has moved down to the middle and lower parts of the material layer. The material layer cannot be supplemented by gas, and the purpose of strengthening sintering cannot be achieved, and there may even be a phenomenon that the rate of defective sintered ore increases due to excessive heat in the middle and lower parts

Images