Method for reducing iron ore sintering ignition energy consumption

Abstract

The invention discloses a method for reducing iron ore sintering ignition energy consumption. The method comprises the following steps of 1, dividing an ignition burner region in an ignition furnace into a plurality of ignition regions; 2, calculating a reference ignition temperature of the ignition furnace according to the content of particles less than 0.5 mm in solid fuel, the content of high-crystallized-water iron ore, the moisture content of granulated mixed material, the height of a sinter bed and a particle size segregation index of the mixed material; and 3, calculating ignition temperature setting values of all the ignition regions according to the air permeability of the sinter bed on the basis of the reference ignition temperature. According to the method for reducing the ironore sintering ignition energy consumption, the reasonable distribution of a temperature field of the ignition furnace is optimized, the waste of the ignition energy consumption is reduced, and the ignition effect is improved.

Description

technical field [0001] The invention relates to the field of sintering technology in the metallurgical industry, in particular to a method for reducing energy consumption of iron ore sintering ignition. Background technique [0002] In my country's iron and steel industry, the sintering process is an important part of iron and steel production, and its energy consumption accounts for about 10%-15% of the total energy consumption of iron and steel production. Among them, the energy consumption of sintering ignition accounts for 5%-10% of the energy consumption of the sintering process. According to statistics, my country's sintering ignition energy consumption is decreasing year by year, but compared with Japan, South Korea and other countries, the national average ignition energy consumption is still about 40MJ / t higher. Therefore, actively developing new technologies to reduce the energy consumption of sintering ignition is an inevitable requirement for energy saving, emiss...

AI Technical Summary

Problems solved by technology

In order to minimize the energy consumption of ignition, it is necessary to precisely control the temperature field distribution of the ignition furnace according to the changes of raw materials and process parameters, so as to prevent the waste of ignition energy consumption and the decline of ignition effect caused by the unreasonable local temperature distribution of the ignition furnace.

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