High-temperature sintering method of vanadium-titanium ore mixture

Abstract

The invention discloses a high-temperature sintering method of a vanadium-titanium ore mixture. The method specifically comprises the following steps that the crushed vanadium-titanium ore mixture isconveyed into a mixer, and quicklime is conveyed into a quicklime digester; high-temperature exhaust gas discharged from a low-temperature section chimney of a ring cooler is introduced into a barrelof the mixer through a fan, the vanadium-titanium ore mixture is heated, the material temperature is improved, and in the heating process, a stirring machine continuously stirs, so that the high-temperature exhaust gas and the vanadium-titanium ore mixture are in full contact; and a steam pipe is connected into a water storage tank. By improving the water adding temperature in the quicklime digester, the mixture is heated by introducing the high-temperature waste gas discharged from the ring cooler into the mixer, normal-temperature water supplemented by a granulator is heated, by means of thethree heating measures, the temperature of the mixture is improved, the over-wetting phenomenon caused by water vapor condensation in a material layer is avoided, the air permeability of the materiallayer is improved, then the sintering productivity is improved, and the fuel consumption is reduced.

Description

technical field [0001] The invention relates to the technical field of metallurgical sintering, in particular to a high-temperature sintering method for a vanadium-titanium ore mixture. Background technique [0002] The temperature of the sintering mixture is an important factor restricting sintering production. If the temperature of the mixture reaches a dew point of 65°C or higher, it can significantly reduce the phenomenon of overhumidity caused by condensation of water vapor in the material layer, and effectively reduce the thickness of the overhumidity layer and the impact of the overhumidity layer on the airflow. resistance, improve the air permeability of the material layer, significantly increase the sintering productivity and reduce the fuel consumption. The traditional way of heating the mixture is to use quicklime to digest and add it to the mixture. The exothermic reaction of the quicklime is used to increase the temperature of the mixture. However, in order Adju...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a high-temperature sintering method for vanadium-titanium ore mixture to solve the problem that the temperature of the mixture finally reaching the sintering machine proposed in the above background technology is only about 45°C, the temperature of the mixture is too low, and the water vapor in the material Condensation in the layer produces an over-humid layer, which makes the gas permeability of the material layer worse, which not only affects the quality and output of sintered ore, but also increases the problem of fuel consumption

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