Method for recovering lead slag and utilizing waste heat in process of lead smelting

Abstract

The invention relates to a method for recovering lead slag and utilizing waste heat in the process of lead smelting. The main content lies in that hot exhaust gas is loaded into a vertically closed tank by the aid of lead smelting slag, an oxygen supply unit at the bottom of the tank is then fed with evenly distributed oxygen, smelt lead slag can be cooled fully, sensible heat of the lead slag isalmost carried by air and discharged from the top of the tank, and finally the waste heat is recovered for heating and power generating. Compared with existing technology for recovering and utilizingwaste heat from recycled-lead smelting, the method has the advantages of high recovery rate of the waste heat, and energy consumption in the following process of lead smelting can be effectively reduced; the method is reasonable, efficient, concise in equipment and easy to operate, and application of the method in the field of power generation and utilization technology of waste heat recovery in the smelting process of recycled lead is benefited.

Description

technical field [0001] The invention relates to the technical field of regenerated lead, in particular to a method and device for efficiently recovering and utilizing low-temperature waste heat resources in the recovery process of slag waste heat based on energy saving and emission reduction. Background technique [0002] At present, in my country and even in the world, the design of the structural parameters and operating parameters of the cooler is only based on the single effect on slag cooling, and hardly considers the recycling of the sensible heat of lead slag; in other words, the current structural and operating parameters of the cooler It has been difficult to adapt to the efficient recovery and utilization of sensible heat from lead slag, and there are insurmountable disadvantages in the sensible heat recovery and utilization of coolers, which are mainly manifested in: [0003] (1) The existence of air leakage in the cooler makes the lead slag lose a lot of sensible ...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the disadvantages of existing coolers such as air leakage and slag sensible heat that can only be partially recovered, the present invention proposes a new process for the comprehensive utilization of lead smelting slag by utilizing recycled lead. The problem of low efficiency of recovering heat resources can also overcome the problem that the previous cooler can only recover part of the heat source, and solve the problem of filling and air supply inside the tank

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