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Baking method for new intermediate frequency furnace

A method of drying ovens and the technology of intermediate frequency furnaces, which are applied in drying, dryers, lining repairs, etc., can solve the problems of changing production rhythm, long oven time, and short service life, and achieve the effect of saving labor

Inactive Publication Date: 2021-02-26
泰州市科健电炉电器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, intermediate frequency furnaces are all electric ovens. In order to avoid excessive temperature rise, the water vapor in the refractory materials will not be discharged in time, resulting in poor oven effect. During the oven process, the power can only be slowly increased to ensure that the temperature rises slowly.
Therefore, the common problems of using electric ovens are: the oven time is long, at least 12 hours, and the production rhythm changes; the baking effect of refractory materials is not good, and the service life is short; the power consumption of smelting is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A method for baking a new furnace of an intermediate frequency furnace, the steps comprising:

[0022] (1) Raise a low fire in the furnace to slowly boil the pot of water, and the steam generated can be discharged to the air valve or the raised safety valve.

[0023] (2) Adjust the combustion and air valve opening to keep the boiler at 25% pressure (6-12h in the case of 5%-10% evaporation). time.

[0024] (3) Weaken the combustion, reduce the pressure in the pot to 0.1MPa, let the regular blowdown valves blow down one by one, and add water or add the unfinished solution.

[0025] (4) Strengthen the combustion again, raise the pressure in the pot to 50% pressure, and maintain 5%-10% evaporation for 6-20h.

[0026] (5) Then weaken the combustion to reduce the pressure, discharge the sewage one by one for the regular sewage valves again, and supplement the water supply.

[0027] (6) Raise the pressure in the pot to 75% pressure, and maintain 5%-10% evaporation for 6-20h...

Embodiment 2

[0031] 1. Oven layout:

[0032] 1) There is one slag cooler on the left and right of the bottom of the furnace, which is used for the flue gas to start from the bottom and to bake the materials in this part. 2> Four units are arranged in the furnace area, considering the large volume of the furnace and the thicker bottom materials.

[0033] 3) There are two return legs, and the oven is installed at nine meters away from the furnace.

[0034] 4) There are two feeders, which are arranged on the platform behind the feeder furnace and connected through the manhole door.

[0035] 5) Two cyclone separators are arranged at the inlet and outlet positions, which are directly connected through the manhole door.

[0036] 6) The sequence of putting into the oven:

[0037] 1. Put two slag cooler ovens into operation with a small amount of oil, and gradually increase the oil amount after the combustion is stable, so that the temperature of the slag cooler rises to 150°C to keep warm and ...

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PUM

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Abstract

The invention relates to a baking method for a new intermediate frequency furnace, comprising the following steps: raising low fire in a hearth to slowly boil boiler water, and discharging the generated steam to an air valve or a raised safety valve; adjusting the opening degree of a combustion valve and the air valve, so that the pressure of the boiler is maintained at 25% (6-12h under the condition of 5%-10% of evaporation capacity), and if the boiler is boiled at the same time in the later period of boiler drying, properly shortening the boiler boiling time; weakening the combustion, reducing the pressure in the pot to 0.1 MPa, discharging pollution one by one by a periodic pollution discharge valve, and supplementing water or adding a solution which is not added completely. According to the baking method for the new intermediate frequency furnace, hot smoke serves as a heat source, so that a lining material is slowly heated, the drying temperature and the heating rate are mechanically controlled, water is promoted to be discharged in different forms, and rapid evaporation of the water is avoided; and the time for baking the furnace by using materials is half a month, while thetime for baking the furnace by using smoke is only 7-8 days, so that the labor is saved.

Description

technical field [0001] The invention relates to the technical field of intermediate frequency furnaces, in particular to a method for baking a new intermediate frequency furnace. Background technique [0002] The intermediate frequency furnace heating device has the advantages of small size, light weight, high efficiency, excellent thermal processing quality and favorable environment. It is rapidly eliminating coal-fired furnaces, gas furnaces, oil furnaces and ordinary resistance furnaces. It is a new generation of metal heating equipment. The intermediate frequency furnace is the main equipment in the casting, forging and heat treatment workshop. Its working stability, reliability and safety are the guarantee for the normal and stable operation of the casting, forging and heat treatment production line in flow operation. The intermediate frequency furnace has a good development prospect in the field of thermal processing, such as the main production of forging pre-forging ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27D1/16F26B21/00
CPCF27D1/16F26B21/005
Inventor 曹孔健
Owner 泰州市科健电炉电器有限公司