Sintering machine

Abstract

A sintering machine comprises a sintering pallet, an igniter, a wind cover and an air bellow. The sintering pallet allows a sintering raw material bed layer including solid fuel to move on the sintering pallet; the igniter is located on the front portion above the sintering pallet; the air cover is located on the rear portion above the sintering pallet; the air bellow is located below the sintering pallet, used for converging smoke obtained after combustion and connected with a smoke pipeline allowing the smoke to be exhausted. The sintering machine is characterized by further comprising at least one air inlet located in the top of the wind cover, at least one fuel gas inlet located in the top of the wind cover and connected with respective fuel gas supply pipelines, and a fuel gas blowing controller arranged on at least one fuel gas supply pipeline and used for controlling the fuel gas blowing amount entering the fuel gas inlets. According to the sintering machine, the energy efficiency of the sintering process can be remarkably improved, and the universality and operation controllability of a system are improved. Based on a variable-fuel-gas-flow blowing system of the sintering machine, the problem of outstanding sintering anisotropism can be effectively relieved.

Description

technical field [0001] The invention relates to a sintering machine, more specifically to a gas injection sintering machine. Background technique [0002] Iron and steel production is the industry with the highest energy consumption in China, accounting for about 16.1% of the country's total energy consumption. Iron ore sintering is second only to ironmaking and coking processes, accounting for 9-12% of the total energy consumption in the steel industry. On the one hand, the proportion of low-grade iron ore raw materials in sinter plants is gradually increasing, and it is urgent to develop new technologies to ensure the quality of sinter ore and improve the yield of sinter ore without increasing energy consumption. On the other hand, the cost of fossil fuel coke powder commonly used in the sintering process is high and the discharge pressure is high. The use of alternative fuels can effectively alleviate the pressure of cost and discharge, but efficient and controllable enh...

AI Technical Summary

Problems solved by technology

However, there are two main difficulties in realizing the segregation distribution of fuel in the conventional solid fuel sintering process: firstly, the shape, size and density of sintering raw material particles are quite different, and it is difficult to control the distribution of solid fuel particles in the mixture. The adjustment range is narrow, the accuracy is low, and the cost of precise control is extremely high; secondly, the solid fuel segregation distribution equipment designed for specific sintering raw materials and production conditions has poor versatility. If the type of sintering raw materials and production conditions change, the distribution equipment needs to be shut down and re-adjusted , or even redesign

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