Temperature distributing cooling method and temperature distributing unloading device for sintered ores

Abstract

The invention discloses a temperature distributing cooling method for sintered ores. The method comprises the following steps of: determining a sintered ore layer, the temperature of which is lower than the unloading temperature of a ring cooling machine, as a low-temperature sintered ore layer and determining a sintered ore layer, the temperature of which is higher than the unloading temperature of the ring cooling machine, as a high-temperature sintered ore layer according to the temperature distribution of the sintered ore layer in a trolley of a sintering machine in the tail part of the sintering machine; performing temperature distributing unloading on the tail part of the sintering machine so as to separate the low-temperature sintered ore layer and the high-temperature sintered ore layer, wherein the low-temperature sintered ore layer which is crushed does not enter the ring cooling machine but is directly conveyed to a follow-up screening step, and the high-temperature sintered ore layer which is crushed enters the ring cooling machine for a cooling operation. The process method can remarkably reduce the handling capacity of the sintered ores in the ring cooling machine by improving the unloading mode of the sintered ores and the material distributing mode on the ring cooling machine, so that the cost of the ring cooling machine is lowered, and the waste heat recovery amount of the sintered ores is improved. The invention further discloses a temperature distributing unloading device used by the method.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a material distribution method for cooling high-temperature sintered ore in blast furnace ironmaking. The invention also relates to the temperature fractional unloading device used in said method. Background technique [0002] Sinter is a main raw material for blast furnace ironmaking. High-temperature sintering is iron ore, coke powder and some additives that are fully mixed and evenly arranged on the sintering machine. The ignition furnace ignites the upper surface of the material layer. Burn down until the bottom of the bed. [0003] During the sintering process of the material layer, the combustion-supporting air required for the combustion of the lower material layer must pass through the sintered upper layer of material layer, where the combustion-supporting air is usually normal temperature air, which will be cooled during the process of passing through the sintered o...

AI Technical Summary

Problems solved by technology

[0007] First, the temperature of the low-temperature sinter layer is much lower than the unloading temperature of the ring cooler, so there is no need to enter the ring cooler for cooling operations. The traditional cooling process increases the unnecessary sinter processing capacity of the ring cooler

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