Device for improving low-temperature reduction degradation indexes of sintered ores and utilization method of device

Abstract

The invention discloses a device for improving low-temperature reduction degradation indexes of sintered ores and a utilization method of the device. The device comprises finished ore belts and a spraying system and is characterized in that a chain-slat conveyor (2) is arranged between the two finished ore belts (1) and (4), and the spraying system (3) and a recovery system (5) are arranged above and below the chain-slat conveyor (2) respectively. By the design, the spraying system (3) can spray sufficient low-temperature reduction degradation inhibitor solution according to quantity of the sintered ores to completely cover surfaces of the sintered ores on the chain-slat conveyor (2), and accordingly the sintered ores can be soaked in the low-temperature reduction degradation inhibitor solution. Full coverage of the surfaces of the sintered ores with the low-temperature reduction degradation inhibitor solution is realized, solution concentration is reduced, consumption of low-temperature reduction degradation inhibitors is reduced, and the low-temperature reduction degradation indexes of the sintered ores are increased remarkably.

Description

technical field [0001] The invention relates to the production process of the main charge of blast furnace ironmaking, in particular to a device and a use method for improving the low-temperature reduction pulverization index of sintered ore. Background technique [0002] As the main burden of blast furnace smelting, sinter ore generally accounts for more than 70%. Its low-temperature reduction pulverization index directly affects the pressure difference in the blast furnace, and ultimately affects the smooth operation of the blast furnace. With the deterioration of sintering raw materials and high material layer sintering and other factors, the low-temperature reduction pulverization index of the original sintered ore is not ideal. Many factories rely on online spraying of low-temperature reduction pulverization inhibitor (CaCl 2 etc.) to improve the low-temperature reduction pulverization index, but the improved effect is not stable. Some have to increase the spray conce...

AI Technical Summary

Problems solved by technology

[0011] The technical problem to be solved by the present invention is to provide a device and a method of use for improving the pulverization index of sintered ore at low temperature reduction in view of the problems existing in the prior art. The pulverization index can also reduce the consumption of low-temperature reduction pulverization inhibitors, and reduce the corrosion of blast furnace equipment and other problems

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