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Method for smelting metal ores

A smelting method and metal ore technology, applied in the field of metal ore smelting, can solve the problems of high energy consumption and low metal smelting efficiency, and achieve the effects of reducing pollution, preventing explosion or poisoning, and accelerating reduction.

Active Publication Date: 2013-09-25
LIUZHOU JINLUO MACHINERY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a metal ore smelting method, which can solve the problems of low metal smelting efficiency and high energy consumption in existing submerged arc furnaces

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  • Method for smelting metal ores
  • Method for smelting metal ores
  • Method for smelting metal ores

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Embodiment Construction

[0020] Below in conjunction with accompanying drawing and embodiment the present invention is further described:

[0021] exist figure 1 In the furnace body 1, there are raw material ore and carbon smelting in the submerged arc furnace relying on the discharge heating of the electrode 2 of the submerged arc furnace. The furnace gas discharged from the submerged arc furnace enters the raw material preheater 14 through the exhaust port 16. The ore is preheated before entering the furnace, and the furnace gas is cooled at the same time; the cooled furnace gas is passed through the gas-water separator 19 to remove water, and then the dust is removed through the cyclone dust collector 18 . Carry out gas separation in the pressure swing adsorption device 17 of the furnace gas that removes moisture and dust, and the pressure swing adsorption process method that gas separation adopts concentrates and purifies carbon monoxide, the adsorption temperature is 20-55°C, and the adsorption p...

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Abstract

The invention relates to the technical field of metal ore smelting, and discloses a method for smelting metal ores. The method comprises the following steps: raw ores and carbon are smelted in a submerged arc furnace by virtue of discharge heating by an electrode of the submerged arc furnace, furnace gas exhausted by the submerged arc furnace firstly passes through a raw material preheater for preheating the ores to be charged into the furnace, and the furnace gas is cooled down at the same time; the cooled furnace gas passes through a liquid-gas separator and a dust remover, so that moisture and dust in the furnace gas are removed; the furnace gas, of which the moisture and the dust are removed, is separated; the separated CO is transmitted to a central through hole of the electrode via an electrode gas-supply device, and is supplied into the furnace materials in smelting. The method can solve the problems of low metal smelting efficiency and high energy consumption of the existing submerged arc furnace.

Description

technical field [0001] The invention relates to the technical field of metal ore smelting, in particular to a method for smelting metal ore with a submerged arc furnace. Background technique [0002] At present, when smelters smelt ore, one method is to use submerged arc furnace to smelt. This method uses carbon as a reducing agent. In order to speed up the reduction of metals and improve the efficiency of smelting, the electrode of the submerged arc furnace used is a hollow self-baking electrode, and the reducing agent carbon monoxide can directly reach the hearth through the hollow channel of the electrode. The molten pool participates in the reaction. However, during the smelting process, the melting of ores and the reduction of metals will produce a large amount of waste gas containing carbon dioxide, carbon monoxide, nitrogen and other substances; due to the limitations of cost and technology, the useful components in these waste gases are smelted in submerged arc fur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B4/00C22B4/08C22B5/12
Inventor 李晓新
Owner LIUZHOU JINLUO MACHINERY
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