A new type of oxygen-enriched side-blown copper smelting furnace top cooling device

Abstract

The invention provides a furnace top cooling device for an oxygen-enriched side copper blowing smelting furnace, and belongs to the technical field of copper smelting equipment. The device is characterized by being composed of a plurality of air cooling walls connected in series and a water cooling wall, wherein an air duct is reserved in each air cooling wall; an air inlet and an air outlet are formed in the two ends of each air cooling wall; the adjacent air cooling walls are connected into a whole in series through connecting pipelines; the air cooling wall at the leftmost side is providedwith a row of the air outlets which are opposite to the inside of a furnace body; the water cooling wall is installed close to the air cooling wall at the leftmost side; a flue outlet is formed in theleft side of the water cooling wall; and a furnace top plane composed of all the cooling walls is covered with a layer of fire-resistant ramming material. According to the furnace top cooling devicefor the oxygen-enriched side copper blowing smelting furnace, the air is used for cooling the furnace top cooling device; and the preheated air is used as secondary air so as to effectively reduce heat loss of the furnace body, and the problem that nodulation in the furnace is caused due to the fact that low-temperature secondary air enters the furnace is solved.

Description

Technical field [0001] The invention belongs to the technical field of copper smelting equipment for oxygen-enriched side-blowing furnaces in non-ferrous metal smelting, and particularly relates to an oxygen-enriched side-blowing furnace top cooling device. Background technique [0002] Oxygen-enriched side-blowing furnaces have been widely used in my country due to their low construction cost and strong material adaptability in the field of copper smelting. The main structure of the oxygen-enriched side-blowing furnace is composed of a hearth, a furnace body, and a furnace roof. The hearth is usually built of refractory materials. The furnace body is composed of dozens of water jackets arranged in 3 to 4 layers and closely connected. The furnace body is directly seated on the refractory material of the hearth. The roof of the furnace is covered by several water jackets and tightly connected. There is a flue gas channel at one end of the furnace body, and the flue gas channel is ...

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Problems solved by technology

[0004] In order to solve the problems that nodules at the secondary tuyere affect production, and the addition of a secondary air waste heat system leads to an increase in costs, and the heat taken away by the circulating water in the water jacket on the top of the furnace leads to a low temperature in the upper part of the furnace body, which is not conducive to the smelting reaction. The inventor of the application has developed a new device suitable for cooling the top of the oxygen-enriched side-blowing furnace. This device uses the secondary air required by the oxygen-enriched side-blowing furnace to cool the furnace top to ensure that the temperature of the entire furnace top is relatively stable. At the same time, the furnace top device is used to heat the secondary air. After heating, the secondary air directly enters the furnace through the corresponding air outlet, which meets the process requirements of rich combustion of monomer sulfur, achieves comprehensive recovery and utilization of heat energy, improves production efficiency, and reduces purpose of production cost

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