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Method for roasting siderite and shaft furnace

A shaft furnace and furnace cavity technology, applied in the direction of combustion methods, furnaces, burners, etc., can solve problems such as unfavorable environmental protection and environmental pollution, and achieve the effects of increasing production, reducing pollution, and uniform roasting

Active Publication Date: 2013-12-18
赫章县众坤能源有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in this traditional process of roasting siderite, a large amount of impurity gases, such as toxic sulfur dioxide gas, etc. are produced when the raw coal is burned. These gases pollute the environment and are not conducive to environmental protection.

Method used

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  • Method for roasting siderite and shaft furnace
  • Method for roasting siderite and shaft furnace
  • Method for roasting siderite and shaft furnace

Examples

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Comparison scheme
Effect test

Embodiment 1

[0046] Embodiment 1 of the present invention provides a kind of method of roasting siderite, see figure 1 ,include:

[0047] Step S101: sending coal gas into the flame injection device;

[0048] Step S 102: ignite the gas, and spray the burning flame into the furnace cavity of the shaft furnace through the flame injection device.

[0049] In the method for roasting siderite provided by Embodiment 1 of the present invention, coal gas is introduced into the flame injection device of the shaft furnace, and the gas is ignited, and the burning flame is sprayed into the furnace cavity of the shaft furnace through the flame injection device, and then the furnace is heated. The siderite in the cavity is roasted. In this way, compared with the combustion of raw coal, gas is directly introduced for combustion, which can reduce environmental pollution.

Embodiment 2

[0051] Embodiment two of the present invention provides another method for roasting siderite, see figure 2 ,include:

[0052] Step 201: sending the gas into the flame injection device;

[0053] Preferably, in this embodiment, the coal gas is the coal gas produced by the gas generator, which is sent into the flame injection device through the delivery pipeline;

[0054] Different from the direct combustion of raw coal in the prior art, and then the siderite is roasted by the burning flame, in the second embodiment of the present invention, the siderite is roasted by using the gas of the gasifier, because the gas produced by the gasifier There is less impurity gas, and the content of carbon monoxide is low, and the pollution to the environment is low, which is in line with the concept of environmental protection;

[0055] Step 202: sending the combustion-supporting air into the flame injection device, and mixing it with the gas;

[0056] Among them, the combustion-supporting...

Embodiment 1

[0061] For embodiment one, embodiment three of the present invention provides a kind of shaft furnace of roasting siderite, comprising:

[0062] A flame-throwing device, the outer wall of which is provided with gas inlets and nozzles;

[0063] The gas inlet is communicated with the nozzle;

[0064] The nozzle communicates with the furnace cavity of the shaft furnace.

[0065]Since the outer wall of the fire injection device is provided with gas inlets and nozzles, compared with the prior art where the raw coal burning flame is directly blown into the furnace cavity, the gas burning flame is sprayed into the furnace cavity through the nozzle in the present invention, so that the flame and the furnace The siderite in the cavity is fully contacted and roasted evenly, which further improves the output of roasted siderite.

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Abstract

The invention belongs to the field of iron-smelting, and particularly discloses a method for roasting siderite and a shaft furnace, which can lower pollution on the environment. The method for roasting the siderite comprises the following steps: supplying coal gas into a flame spray device; igniting the coal gas; and spraying flame into a furnace chamber of the shaft furnace by the flame spray device. The shaft furnace comprises the flame spray device, wherein an outer wall of the flame spray device is provided with a coal gas inlet and a spray nozzle which are communicated with each other; and the spray nozzle is communicated with the furnace chamber of the shaft furnace.

Description

technical field [0001] The invention relates to the field of ironmaking, in particular to a method for roasting siderite and a shaft furnace. Background technique [0002] In the traditional process of roasting siderite, the siderite is put into the furnace chamber of the shaft furnace, and the outer wall of the shaft furnace is provided with a flame-throwing device connected to the furnace chamber, wherein the raw coal is placed at the flame-throwing device for roasting. Combustion, and then through the blowing device, the flame of raw coal combustion is sprayed into the furnace cavity through the flame injection device, so as to roast the siderite in the furnace cavity. [0003] However, in this traditional process of roasting siderite, a large amount of impurity gases, such as toxic sulfur dioxide gas, etc. are produced when the raw coal is burned. These gases pollute the environment and are not conducive to environmental protection. Contents of the invention [0004] ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B1/02F27B1/08F23D14/02F27B1/10F27B1/21
Inventor 陈小众
Owner 赫章县众坤能源有限责任公司
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