Mining and metallurgy processing waste heat recycling device

Abstract

The invention discloses a mining and metallurgy processing waste heat recycling device, and belongs to the technical field of mining and metallurgy waste heat utilization. The mining and metallurgy machining waste heat recycling device comprises a fixing plate, a ratchet wheel is arranged in the middle of the outer side of an axis in a sleeving mode, a pawl is hinged to the position, opposite to the upper portion of the ratchet wheel, of the rear wall of the fixing plate, a top plate is arranged above the pawl, a compression spring is fixedly arranged between the pawl and the top plate, two racks are arranged on the upper side and the lower side of a gear in a central symmetry mode, and a heat conductive plate is fixedly arranged on the inner wall of a clamping plate; and a plurality of heat conductive pipes are linearly inserted into the top face of the heat conductive plate at equal intervals relative to through grooves, the upper ends of the heat conductive pipes are connected with metal hoses, a smoke outlet is formed in the middle of the top face of a supporting plate, and a waste heat recovery assembly is arranged above the smoke outlet. Waste heat in flue gas can be used for increasing the temperature of the outer side of a smelting furnace, the effect of guaranteeing the temperature in the smelting furnace is achieved, the waste heat in the flue gas cannot be completely wasted, the utilization rate of fuel is increased, and the energy consumption is reduced.

Description

technical field [0001] The invention relates to the technical field of mining and metallurgy waste heat utilization, and more specifically, relates to a mining and metallurgy processing waste heat recycling device. Background technique [0002] Mining and smelting is the collective name of mining, ore dressing and smelting. In the mineral smelting process of mining and smelting processing, due to the extremely high melting point of the ore, extremely high temperatures are required to melt it and extract the metal in the ore. The existing Most of the methods are to add fuel to the smelting furnace to calcine and smelt the ore, but calcination cannot fully utilize the heat. No matter how good the heat preservation performance of the smelting furnace is, there will still be a large amount of waste heat that will be discharged with the exhaust gas (waste heat is also redundant and waste energy), this part of waste heat accounts for about 17%-67% of its total fuel consumption, so...

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Problems solved by technology

[0002] Mining and smelting is the collective name of mining, ore dressing and smelting. In the mineral smelting process of mining and smelting processing, due to the extremely high melting point of the ore, extremely high temperatures are required to melt it and extract the metal in the ore. The existing Most of the methods are to add fuel to the smelting furnace to calcine and smelt the ore, but calcination cannot fully utilize the heat. No matter how good the heat preservation performance of the smelting furnace is, there will still be a large amount of waste heat that will be discharged with the exhaust gas (waste heat is also redundant and waste energy), this part of waste heat accounts for about 17%-67% of its total fuel consumption, so waste heat recovery is an important way to improve economy and save fuel. In the prior art, the recovery and utilization of waste heat is generally It is used to preheat combustion-supporting air, preheat gas and produce steam. The patent with the publication number of CN109945278A is an energy-saving system that uses absorption heat pump to deeply recover flue gas waste heat for centralized heating. The recovered flue gas waste heat is used for centralized heating. The heat system heats the return water of the heat network. First, the low-temperature and high-humidity flue gas coming out of the desulfurization tower exchanges heat with the spraying circulating water in the flue gas waste heat recovery tower of the flue gas waste heat recovery system, and the recovered flue gas waste heat is stored. in high temperature circulating water

However, this technical solution still has the following defects: 1. It is impossible to accelerate the flue gas to increase the efficiency of heat exchange; 2. Although the waste heat will be stored in high-temperature circulating water, the high-temperature circulating water requires high heat preservation conditions during transportation , Improper heat preservation can easily cause part of the heat to be lost, resulting in a low utilization rate of waste heat

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