Submerged arc furnace adjusting and control method

A technology of submerged arc furnace and charge, applied in the field of submerged arc furnace control, can solve the problems of long time consumption, unstable production of submerged arc furnace, low output, etc.

Inactive Publication Date: 2018-01-16
陈良
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  • Application Information

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Problems solved by technology

[0004] The submerged arc furnace is widely used, but in the production practice, there is no effective method to guide it. It is controlled entirely by the experience of the operator. There is no clear direction of regulation, and it takes a long time. The production of the submerged arc furnace is very unstable. Low output, high power consumption, major personal accidents, equipment accidents occur from time to time

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  • Submerged arc furnace adjusting and control method
  • Submerged arc furnace adjusting and control method

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Embodiment Construction

[0100] There are two circuits connected in parallel in the melting pool of the submerged arc furnace, that is, resistance heat and arc heat. Maximeco divides the resistance system and arc system in the submerged arc furnace smelting according to their different proportions. Different smelting varieties have their own suitable conditions. proportion. How to control the submerged arc furnace to achieve this suitable ratio?

[0101] 1. Charge specific resistance R 料比 Functional relationship with heat partition coefficient

[0102] heat partition coefficient

[0103] Rn≥Rm When Rn=Rm, C is the maximum value, namely At this time, the arc power is equal to the resistance power. According to charge specific resistance R 料比 The functional relationship between the star-shaped resistance and the angular resistance, and the functional relationship between the specific resistance of the charge and the heat distribution coefficient are derived.

[0104] Namely: C=a·R 料比 2 +b·R ...

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Abstract

The invention discloses a submerged arc furnace adjusting and control method. The functional relationship existing between the heat distribution coefficient C and furnace burden specific resistance Rmaterial ratio is as follow: C=a*R material ratio<2>+b*R material ratio, wherein a<0, and when C=0.5, R material ratio=-b/2a, and a submerged arc furnace is adjusted and controlled with the functionalrelationship. The submerged arc furnace is adjusted and controlled through the method, the zone where the furnace burden specific resistance is located is judged through the furnace condition of thesubmerged arc furnace, then an operator is guided to adjust the furnace burden specific resistance according to production requirements, and the furnace burden specific resistance is fast and accurately adjusted to a furnace burden fusion zone or a high-temperature reduction zone to achieve stable production. The yield of the submerged arc furnace adjusted and controlled through the method is greatly increased, power consumption is reduced obviously, and human injuries and equipment accidents are avoided.

Description

Technical field: [0001] The invention relates to the field of application of submerged arc furnaces, in particular to a control method for submerged arc furnaces. Background technique: [0002] The submerged arc furnace is an electrometallurgical equipment that uses the arc heat at the end of the electrode and the resistance heat of the charge to convert electrical energy into heat energy, so that useful elements such as metals are reduced from ores or oxides. Because it is mainly used for metal oxidation The reduction smelting of ore is called submerged arc furnace or ore reduction submerged arc furnace. Submerged arc furnace is called ferroalloy furnace when it is used to produce ferroalloy; it is called calcium carbide furnace when it is used to produce calcium carbide; it is called yellow phosphorus furnace when it is used to produce yellow phosphorus; Titanium slag is called titanium slag furnace. [0003] When submerged arc furnaces produce ferroalloys, coke is mostl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27B3/28
Inventor 陈良陈慈媛赵龙
Owner 陈良
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