A sinter draft type vertical cooling furnace and a sinter cooling method

Abstract

The invention discloses a sinter air drafting type vertical cooling furnace. The vertical cooling furnace (A0) comprises a stock bin (1), a tower body (2) and discharging equipment (3). The tower body(2) comprises a tower top (201), a tower wall (202) and an air inlet segment (203). The tower top (201) is arranged on the top of the tower wall (202), and the air inlet segment (203) is arranged onthe lower part of the tower wall (202). The stock bin (1) is arranged on the upper part of the tower top (201) and communicates with the interior of the tower body (2). The bottom of the air inlet segment (203) is provided with a discharge port (204). The discharging equipment (3) is arranged below the discharge port (204). The tower top (201) or the upper part of the tower wall (202) is providedwith an air drafting hot air outlet (4). The vertical cooling furnace has the advantages that the sinter cooling speed is low, the cooling air capacity consumed per ton is small, the exhaust gas quantity is relatively small, the exhaust gas temperature is high, the boiler thermal efficiency is high, cooling waste gas can be completely utilized by a boiler, and the sensible heat recovery rate of sinter generally can reach about 70 %.

Description

technical field [0001] The invention relates to a sinter cooler and a sinter cooling method, in particular to a sinter draft type vertical cooling furnace and a sinter cooling method, belonging to the fields of ironmaking and environmental protection. Background technique [0002] In recent years, with the increasingly tense relationship between energy consumption and environmental protection in my country, energy conservation and environmental protection have been valued by the whole society, making it a key measure to establish a resource-saving and environment-friendly society. Energy conservation and environmental protection work involves all aspects. Energy conservation and environmental protection in the industrial field is the focus and difficulty of energy conservation and environmental protection work, especially for the steel industry with high energy consumption and heavy environmental pollution. The energy consumption of the sintering process accounts for about 1...

AI Technical Summary

Problems solved by technology

No matter which cooling method is used, the cooling machine has problems such as large air leakage rate, high fan power consumption, low sensible heat recovery rate, and low boiler thermal efficiency.

In other words, in the current environment where the market has increasingly stringent requirements for energy saving and green manufacturing in sinter production, the original equipment structure has been difficult to achieve efficient recovery and utilization of sinter sensible heat

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