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Sintering end point temperature control method and sintering end point temperature control system

A temperature control method and sintering end-point technology, which can be applied to furnace types, furnaces, lighting and heating equipment, etc., can solve the problems of unqualified sinter, returned ore, fuel waste, etc., and achieve the effect of avoiding fuel waste and increasing production.

Active Publication Date: 2014-07-02
ZHONGYE-CHANGTIAN INT ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

figure 2 Among them, the highest temperature points of the temperature curves S1, S2 and S3 all appear at the No. 22 air box position (the penultimate air box), but the temperature of the curve S1 at this position is nearly 500 degrees, and the high temperature reflects the waste of fuel; the curve The temperature of S3 at this position is less than 200 degrees, too low temperature reflects that the material may not be burnt through, which will lead to a high proportion of returned ore, that is, the generation of unqualified sintered ore

Method used

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  • Sintering end point temperature control method and sintering end point temperature control system
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  • Sintering end point temperature control method and sintering end point temperature control system

Examples

Experimental program
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Effect test

Embodiment 1

[0033] image 3 It is a schematic flowchart of the method for controlling the sintering end point temperature provided in Example 1 of the present application.

[0034] like image 3 As shown, the method includes:

[0035] S101: Detect the sintering end point temperature.

[0036] The sintering end point is the point where the material layer has been burned through but not overburned. At this time, the fuel in the material layer is completely burned. Therefore, the temperature of the sintering end point is the highest during the entire material sintering process.

[0037] The temperature during the sintering process of the material can be obtained indirectly by using the temperature of the flue gas in the bellows, or it can be detected by setting a temperature sensor on the trolley. If the temperature sensor is used to collect the temperature, the temperature sensor can be set on the sintering machine trolley if the online detection function is required; while for the exper...

Embodiment 2

[0051] Figure 4 It is a schematic flowchart of the method for controlling the sintering end point temperature provided in Example 2 of the present application.

[0052] like Figure 4 As shown, the method includes:

[0053] S201: Detect the temperature of 6 thermocouples on the trolley horizontally arranged at each wind box position.

[0054] On the sintering machine trolley, there are 6 thermocouples arranged at corresponding positions of each bellows, and the 6 thermocouples are evenly arranged along the moving direction of the trolley. The thermocouples are used to detect the temperature of the feeding layer of the sintering machine trolley.

[0055] S202: Calculate the temperature of each wind box according to the 6 temperatures obtained at each wind box position.

[0056] The mean value of the 6 temperatures obtained at each wind box position can be calculated and taken as the temperature of the wind box.

[0057] In addition, when individual thermocouples have their...

Embodiment 3

[0072] Figure 5 It is a schematic flowchart of the method for controlling the sintering end point temperature provided in Example 3 of the present application.

[0073] In the above embodiment, before gradually adjusting the opening of the bellows damper to the maximum value of the set bellows damper range, as Figure 5 As shown, the method may also include:

[0074] S301: Detect the opening of the bellows damper.

[0075] In the above step S1031 , step S1032 or step S1033 , if the current opening of the air box damper is already equal to the maximum value of the preset range of the air box damper, then there is no need to adjust the opening of the air box damper. Therefore, before adjusting the opening of the bellows damper, the opening of the bellows damper in the current state can be detected first.

[0076] S302: Determine whether the opening of the bellows damper is smaller than the maximum value of the preset range of the bellows damper.

[0077] When the opening of...

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Abstract

The invention discloses a sintering end point temperature control method and a sintering end point temperature control system. The method includes the following steps: sintering end point temperature is detected; the relation between the sintering end point temperature and a preset sintering end point temperature range is judged; if the sintering end point temperature is normal, the opening degrees of the air doors of bellows are gradually adjusted to the maximum value of the range of the air doors of the bellows; if the sintering end point temperature is overlow, material thickness is decreased; and if the sintering end point temperature is overhigh, material thickness is increased. By regulating both material thickness and the opening degrees of the air doors of the bellows, the sintering end point temperature can be effectively controlled in a fixed range, so that the waste of fuel as the result of the overhigh sintering end point temperature and the production of unacceptable sintered ores as the result of the overlow sintering end point temperature can be prevented, and thereby the output of the sintering process can be increased to the max.

Description

technical field [0001] The present application relates to the technical field of sintering technology, in particular to a method and system for controlling the temperature of the sintering end point. Background technique [0002] The sintering system mainly includes a sintering trolley, a mixer, a main exhaust fan, a ring cooler and other equipment. For the general process, see figure 1 Shown: Various raw materials are mixed in the batching room 1 to form a mixed material, and then enter the mixer 2 to mix and pelletize, and then spread it evenly on the sintering trolley through the round roller feeder 3 and the nine-roller distribution machine 4 5 to form a material layer, and the ignition fan 12 and the ignition fan 11 start the sintering process for material ignition. After the sintering is completed, the sintered ore obtained is crushed by the single roll crusher 8 and then enters the ring cooler 9 for cooling, and finally, after being screened and granulated, it is sen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F27B21/14
Inventor 李宗平孙英
Owner ZHONGYE-CHANGTIAN INT ENG CO LTD