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Preheating sintered mixture process utilizing heating furnace hot waste gas

A technology for sintering mixture and hot waste gas, which is applied in the directions of preheating cost, lighting and heating equipment, and process efficiency improvement, etc., can solve problems such as unsatisfactory effect, etc. effect of small changes

Inactive Publication Date: 2009-01-21
BAOSTEEL GROUP XINJIANG BAYI IRON & STEEL
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  • Abstract
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Problems solved by technology

At present, using these two methods to increase the temperature of the sintered mixture, the effect is not satisfactory

Method used

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  • Preheating sintered mixture process utilizing heating furnace hot waste gas

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Embodiment Construction

[0009] A process for preheating the sintering mixture by using the hot waste gas of the heating furnace. As shown in the attached figure, the secondary mixer of the sintering machine is sequentially connected with a steam adding device, a gas mixing chamber, a gas heating furnace, a gas heating furnace, and a gas mixing chamber Temperature and flow sensors are installed in the steam adding device, and each temperature and flow sensor is connected to the temperature and flow control system through wires to control the temperature and gas flow in the gas heating furnace, gas mixing chamber and steam adding device. Temperature and flow control systems are existing control equipment and can be purchased. The high-temperature hot waste gas produced by the combustion of gas in the gas heating furnace enters the gas mixing chamber equipped with a blower, and a certain amount of cold air is blown into the gas mixing chamber by the blower to properly adjust the temperature and flow of t...

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Abstract

The invention discloses a process for preheating sintered mixed material through utilizing hot waste gas of a heating furnace, wherein an add-on steam device, a gas mixing chamber and a gas-fired furnace are connected on a secondary mixing machine of a sintering device in turn, wherein the gas-fired furnace, the gas mixing chamber and the add-on steam device are all provided with temperature and flow sensors inside, wherein each temperature and flow sensor is connected with a temperature and flow control system through wires. High temperature hot waste gas which is generated by burning coal gas in the gas-fired furnace enters into the gas mixing chamber which is provided with a blower, and blower can blow a certain amount of cold air into the gas mixing chamber to appropriately regulate the temperature of hot waste gas, hot waste gas which is mixed in the gas mixing chamber is further added into the steam device to mix and humidify with steam to the saturation, then the hot waste gas which is humidified enters into the secondary mixing machine, and is blown to the mixed material along the opposite direction to the material flow of the sintered mixed material. The invention not only has simple technology flow, but also can effectively increase the temperature of sintered mixed material, and has high sintered yield.

Description

technical field [0001] The invention relates to a process for preheating sintering mixture by utilizing the hot waste gas of a heating furnace. Background technique [0002] The domestic method of preheating the sintering mixture to increase the temperature of the sintering material and reduce the sintering over-humidity layer is the method of preheating by hot return ore, and the other is the method of preheating by steam. At present, the effect of using these two methods to increase the temperature of the sintered mixture is not satisfactory. Therefore, every sintering plant is trying to increase the temperature of sintering mixture in order to increase sintering output and reduce consumption. Contents of the invention [0003] The object of the present invention is to provide a process for preheating the sintering mixture by utilizing the hot waste gas of the heating furnace, which not only has a simple process flow, but also can effectively increase the temperature of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27D13/00F27D17/00
CPCY02P10/25
Inventor 张则岗袁万能杨恒远龙涌涛
Owner BAOSTEEL GROUP XINJIANG BAYI IRON & STEEL
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