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 rod bodies 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, the rotarydrum is further filled with cooling fluid, at least a part of the rod bodies are hollow, and the hollow rod bodies are distributed at equal intervals in the circumferential direction of the rotary drum; the charge level cooling device further comprises a controller, a corner sensor and switch valves arranged in the hollow rod bodies, the controller is in signal connection with the corner sensor and the switch valves, and the corner sensor is used for monitoring the rotating angle of the rotary drum; and a first parameter delta n1 and a second parameter delta n2 are set, and when delta n1 is smaller than or equal to delta n2, the controller calculates the serial number ni of the hollow rod body located at the spraying station according to the formula ni=(n+-N-i-1)%N+1 and controls a switchvalve in the rod body with the serial number ni to be opened.

Description

Technical field[0001]The present invention relates to the field of sintering technology, in particular to an enhanced 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. The principle is to mix various powdered iron-containing raw materials with appropriate amounts of fuel and flux, and add appropriate amounts 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 agglomerates to form the main raw material sintered ore in the current blast furnace ironmaking process.[0003]However, the pollution and energy consumption of the sintering process are relatively high. Its energy consumption ranks second in the iron and steel industry, and its pollution load accounts for 40% of the iron and steel industry, and ranks first. With the increasingly stringent environmental prote...

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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

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