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Sintering segregation distribution controlling method for stabilizing material layer thickness

A technology of material layer thickness and control method, which is applied in the direction of furnace type, furnace, lighting and heating equipment, etc., can solve the problems that the sintering of thick material layer does not take full advantage, and the tracking control of material layer thickness is difficult to achieve stability, etc.

Active Publication Date: 2014-11-05
CENT SOUTH UNIV
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Problems solved by technology

The actual production shows that due to the influence of the speed change of the trolley, the existing control method is difficult to achieve stable tracking control of the thickness of the material layer, so that the sintering of the thick material layer does not give full play to the maximum advantage

Method used

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  • Sintering segregation distribution controlling method for stabilizing material layer thickness
  • Sintering segregation distribution controlling method for stabilizing material layer thickness
  • Sintering segregation distribution controlling method for stabilizing material layer thickness

Examples

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Embodiment 1

[0026] refer to figure 1 , the method of this embodiment includes the following steps:

[0027] Step 1: Establish a feed-forward compensation decoupling controller to realize the decoupling between the thickness of the material layer, the rotational speed of the round roller feeder and the opening degree of the discharge gate.

[0028] The feed-forward compensation decoupling control algorithm establishes the relationship between the thickness of the material layer, the rotational speed of the round roller and the opening degree of the discharge gate according to the principle of material flow balance.

[0029] The feeding amount W of the round roller feeder and the material outflow line speed v w And discharge gate opening height H w And the relationship between the discharge gate width B is:

[0030] W = ρv w BH w =ρnπLBH w (15)

[0031] In the formula, ρ is the bulk density of the material, n is the rotation speed of the roller, and L is the diameter of the rolle...

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Abstract

The invention discloses a sintering segregation distribution controlling method for stabilizing material layer thickness. In the method, a material layer thickness feed-forward cascade intelligent control system with a two-layer hierarchical structure is provided for stabilizing the material layer thickness, wherein a feed-forward compensation decoupling control algorithm is adopted in the upper layer structure to decouple the material layer thickness, the rotation speed of a round roller feeder and the opening of a discharging gate and eliminate the coupling relation of the material layer thickness, the rotation speed of the round roller feeder and the opening of the discharging gate; in the lower layer structure, a discharging gate opening controller and a round roller rotation speed controller are arranged aiming at the two operation parameters, namely the decoupled rotation speed of the round roller feeder and the decoupled opening of the discharging gate, so that stabilization control over the material layer thickness is realized; and in order to eliminate deviation between an actual value and a set value of the material layer thickness, a thickness difference controller is arranged to correct the material layer thickness feed-forward cascade intelligent control system. By the control technique, the stable and smooth sintering of a thick material layer can be effectively guaranteed, the sintering energy consumption is reduced, and the quality and the yield of sintered ore are improved.

Description

technical field [0001] The invention belongs to the technical field of sintering production process control, and relates to a sintering segregation distribution control method for stabilizing material layer thickness. technical background [0002] Realizing the automatic control of sintering segregation distribution is of great significance to ensure high quality and high yield of sintering, energy saving and emission reduction. The current sintering distribution process generally improves the distribution effect by improving the process equipment. Most of the control methods are simple feedback control by using the thickness of the material layer, and roughly adjust the cutting amount of the distribution process based on experience. The actual production shows that due to the influence of the speed change of the trolley, it is difficult for the existing control method to achieve stable tracking control of the thickness of the material layer, so that the sintering of the thi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F27B21/14
Inventor 吴敏王春生赖旭芝曹卫华陈鑫许虎
Owner CENT SOUTH UNIV
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