Magnetic field detection method for detection of key parameters of submerged arc furnace smelting

A key parameter and submerged arc furnace technology, which is applied in the field of magnetic field detection method and key parameter detection of submerged arc furnace smelting, can solve the problem that key parameters cannot be effectively measured

Inactive Publication Date: 2016-08-31
刘卫玲 +2
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Problems solved by technology

[0004] In order to solve the problem that the three key parameters of electrode end position, arc length and molten pool liquid level position cannot be effectively measured during t

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  • Magnetic field detection method for detection of key parameters of submerged arc furnace smelting
  • Magnetic field detection method for detection of key parameters of submerged arc furnace smelting
  • Magnetic field detection method for detection of key parameters of submerged arc furnace smelting

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Embodiment Construction

[0020] With reference to the drawings, the present invention will be further described in detail.

[0021] A new method for detecting key parameters of submerged arc furnace smelting—magnetic field detection method, including the following steps:

[0022] Step 1: In the furnace of the submerged arc furnace, a strong current enters the furnace through the electrodes, forming a current loop on the surface of the molten pool. Take the triangular current loop as an example to establish the furnace circuit model, such as figure 1 As shown, the current flowing through the electrodes in the furnace is the electrode current I A , I B , I C , Electrode current I A , I B , I C It reaches the molten pool through the arc zone, forming a triangular molten pool current loop near the molten pool liquid level, I AC , I CB , I BA Respectively the molten pool current.

[0023] According to Biot-Savart law, any current element on any current loop The point is called the source point, and the magne...

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Abstract

The invention relates a method for detection of key parameters such as an electrode end position, an arc length and a molten pool liquid level position in a production technology course of submerged arc furnace smelting and specifically relates to a new method for detection of the key parameters of the submerged arc furnace smelting, namely the magnetic field detection method. The magnetic field detection method comprises the steps that firstly, an internal circuit model of a submerged arc furnace is established; secondly, a magnetic field radiation model of the submerged arc furnace is established according to electromagnetic field theories, and two measurement origin points including (i)P(/i)1 and (i)P(/i)2 in the furnace are selected; and thirdly, the measurement origin point (i)P(/i)1 is taken as the origin point (i)O(/i), multiple points on the origin point axis (i)z(/i) are extracted as detection points, a magnetic induction intensity curve is obtained according to magnetic induction intensities at each detection point, and the molten pool liquid level position, the electrode end position and the arc length parameter can be obtained according to the magnetic induction intensity curve. The invention discloses the non-contact magnetic field detection method based on an electromagnetism theory for the first time. The detection theory is characterized in that a corresponding electromagnetic field model is established, so that the electrode end position, the arc length and the molten pool liquid level position in the submerged arc furnace can be determined effectively.

Description

Technical field [0001] The invention relates to a method for detecting key parameters such as electrode end position, arc length and molten pool liquid level position during the smelting production process of a submerged arc furnace, in particular to a new method for detecting key parameters of submerged arc furnace smelting—magnetic field detection method. Background technique [0002] Submerged arc furnace is an industrial electric furnace that uses arc discharge to smelt ore and extract useful metals from it. An electric arc is generated between the electrode end of the electric furnace and the charge, and the electrode is a key component for introducing a strong current into the furnace for arc smelting. In the smelting process, the balance of the heat distribution in the furnace and the power of the three-phase molten pool is adjusted by lifting the electrode. [0003] In the smelting process of submerged arc furnace, the three parameters of electrode end position, arc length ...

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Application Information

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IPC IPC(8): G01F23/00G01B7/00G01R31/12
CPCG01B7/003G01F23/00G01R31/12
Inventor 刘卫玲
Owner 刘卫玲
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