A high-efficiency energy-saving oxygen blowing device for mining furnace

Abstract

The invention provides an efficient energy-saving oxygen blowing device for a mining and metallurgy furnace. The efficient energy-saving oxygen blowing device comprises an oxygen blowing pipe body, wherein the wall thickness of the oxygen blowing pipe body is 1-20mm, and the diameter of the inner hole of the oxygen blowing pipe body is not less than 4mm. An oxygen blowing pipe reinforcing body which is in interference fit with the oxygen blowing pipe body is continuously in interference fit with another oxygen blowing pipe body or a connecting body of the oxygen blowing pipe body and the oxygen blowing pipe reinforcing body; or the oxygen blowing pipe body consists of two concentric reducer oxygen blowing pipes which are sequentially connected end to end, and interference fit is adopted at the joint; by virtue of additionally arranging a switch control connector and rich-poor oxygen fusion connector and adopting antioxidant elements Cr and Mo for the oxygen blowing pipe body, even when the temperature is greater than 760 DEG C, an oxygen blowing pipes still has higher antioxidant capability, so that by virtue of the high temperature resistant capability and heat-conducting capability of the pipes, O2 in the pipes can be heated, chemical heat and physical heat can be achieved in the furnace, and the service lives of the steel pipes are prolonged; furthermore, poor oxygen from air is added, so that oxygen is saved, and thus the purposes of high efficiency and energy conservation are achieved.

Description

technical field [0001] The invention relates to a high-efficiency energy-saving oxygen blowing device for a mining furnace. Background technique [0002] The oxygen lance used in the prior art has the following deficiencies: 1. In order to achieve the purpose of durability, the surface of the oxygen lance is usually coated with refractory mud or a refractory layer, but this method does not actually enhance the durability of the oxygen lance. 2. In actual use, the operator needs to hold the oxygen blowing tube close to the furnace body. Due to the high temperature of the furnace body and the fast melting speed of the oxygen blowing tube, the oxygen blowing tube is often not fully used. Therefore caused the waste of oxygen lance. In addition, the traditional surface-coated oxygen blowing pipe, the surface coating is insulated from heat, and the oxygen cannot get physical heat. When the coating is heated through and the temperature of the steel pipe inside the coating exceeds ...

AI Technical Summary

Problems solved by technology

[0002] The oxygen lance used in the prior art has the following deficiencies: 1. In order to achieve the purpose of durability, the surface of the oxygen lance is usually coated with refractory mud or a refractory layer, but this method does not actually enhance the durability of the oxygen lance. 2. In actual use, the operator needs to hold the oxygen blowing tube close to the furnace body. Due to the high temperature of the furnace body and the fast melting speed of the oxygen blowing tube, the oxygen blowing tube is often not fully used. This results in a waste of oxygen blowing tubes

In addition, the traditional surface-coated oxygen blowing pipe, the surface coating is insulated from heat, and the oxygen cannot get physical heat. When the coating is heated through and the temperature of the steel pipe inside the coating exceeds 760°C, Fe and O2 react chemically, causing Fe Rapid burning, not to mention the physical heat of oxygen; 3. The connection method of muzzle jaws or pipe clamps is time-consuming to operate, which cannot better meet the time urgency requirements of the site, and is more likely to collapse due to the rapid increase of oxygen flow The danger of tempering; 4. The production cost of oxygen enrichment alone is high

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