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Runner preheating cover and runner preheating method

A launder and convection trough technology, applied in the field of launder preheating cover and launder preheating, can solve the problems of long heating time and large energy loss, and achieve the goals of reducing waste, saving resources and costs, and shortening preheating time Effect

Inactive Publication Date: 2017-03-01
宁波创润新材料有限公司
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the method of preheating the launder in the prior art has the problems of long heating time and large energy loss.

Method used

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  • Runner preheating cover and runner preheating method
  • Runner preheating cover and runner preheating method
  • Runner preheating cover and runner preheating method

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Embodiment Construction

[0048] It can be seen from the background art that the method of preheating the launder in the prior art has the problems of too long heating time and too large energy loss. Combining with the existing technology to preheat the launder, we will analyze the reasons for the excessively long heating time:

[0049] In the prior art, silicic acid wool is usually used to cover the launder, and then the natural gas is directly heated with a musket. However, if the silicic acid cotton cover is too tight, the musket will be easily extinguished; if the cover is not tight and the opening is too large, the heat dissipation will be too fast, and the heat loss will increase the preheating time, consume more natural gas, waste resources and increase costs.

[0050] In addition, using silicic acid cotton to cover the launder will easily generate impurities during winding, which will cause inclusions in the ingot during the casting process, affecting the composition of the ingot and the qualit...

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Abstract

The invention discloses a runner preheating cover and a runner preheating method. The runner preheating cover comprises a shell and a lining structure. When the shell is preheated, the face, close to a runner, of the shell is the first face, and the first face is provided with a cavity. The lining structure is located in the cavity of the shell. The lining structure internally comprises an electric heater used for generating heat for preheating the runner. The electric heater in the lining structure is used for heating the runner, the runner is preheated, the runner can be subjected to heat preservation through the lining structure and the shell, dissipation of excessive heat in the runner heating process is reduced, heat losses in the runner preheating process are reduced, the runner preheating speed can be increased, the runner preheating time is shortened, and resources and cost are saved. In addition, the electric heater is used for heating the runner, usage of open fire is avoided in the heating process, the service life of a heat preservation material is prolonged, the heat preservation material is prevented from being frequently replaced, garbage generation is reduced, and the runner preheating cover saves more energy and is more environment-friendly.

Description

technical field [0001] The invention relates to the field of smelting and processing, in particular to a launder preheating cover and a launder preheating method. Background technique [0002] Launders are widely used in the field of smelting and processing, and are used to connect melting furnaces, holding furnaces and casting machines to allow molten liquid to flow through. Transferring the molten liquid through the launder can efficiently and safely transfer the high-temperature molten liquid between different smelting equipment. [0003] Because the temperature of the liquid flowing in the launder is often very high, and the transfer of the molten liquid between different smelting equipment needs to be kept as high as possible. Therefore, before smelting and processing, it is necessary to preheat the launder to increase the temperature of the launder, so as to avoid strong heat exchange between the molten liquid and the launder when the molten liquid flows through the l...

Claims

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Application Information

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IPC IPC(8): B22D35/06
Inventor 吴景晖姚力军张卫嘉
Owner 宁波创润新材料有限公司
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