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Furnace cover of closed type calcium carbide furnace and process for producing same

A calcium carbide furnace and furnace cover technology, applied in furnaces, furnace components, lighting and heating equipment, etc., can solve problems such as process operation and furnace difficulty, furnace pressure fluctuations, serious material spraying, etc., to avoid furnace gas and dust falling into the furnace. The effect of improving the quality structure of the material layer and saving the cost of electricity

Inactive Publication Date: 2011-06-15
YUNNAN YUNWEI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is easy to cause large fluctuations in furnace pressure and serious spraying, and it is difficult to process and release the furnace. If it is serious, it will cause explosion in the furnace, resulting in accidental safety accidents

Method used

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  • Furnace cover of closed type calcium carbide furnace and process for producing same
  • Furnace cover of closed type calcium carbide furnace and process for producing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0017] As shown in Figures 1 and 2, the furnace cover of the present invention is constituted as follows: there are three electrode sealing ring devices 1, and the electrode sealing ring devices are used to seal the furnace gas to prevent the furnace gas from protruding from the electrode column and contacting the air to burn, and the electrodes are sealed The ring device 1 is connected to the electrode water-cooled sealing sleeve 2 made of non-magnetic steel thick-walled seamless steel pipe by means of flange bolt connection, and each electrode water-cooled sealing sleeve 2 is installed with four feeding nozzles by welding The seat plate and the water-cooling ring 4 made of non-magnetic steel thick-walled seamless steel pipe are welded. The water-cooling ring 4 is used to cool the feeding nozzle to install the seat plate. The water-cooled reinforcement ring 5 rolled from steel thick-walled seamless steel pipe is welded, and the water-cooled reinforcement ring 5 is welded to th...

Embodiment 2

[0020] Same as Example 1, the difference is: heat-resistant concrete adopts high aluminum powder, 446 type stainless steel fiber reinforced heat resistant concrete, high temperature resistant aggregate, three sodium phosphate, the first three (high aluminum powder, 446 type stainless steel fiber Reinforced heat-resistant concrete, high-temperature-resistant aggregate) according to the ratio of 1:1.5:2.5 (weight ratio), after mixing evenly, add 15% of its weight of trisodium phosphate, and add an appropriate amount of water to mix evenly, and then directly pour it into the formwork, Use a vibrating pump to vibrate it to make it full, and it will be put into use 36 hours after it is fully formed.

Embodiment 3

[0022] Same as Example 1, the difference is: heat-resistant concrete adopts high aluminum powder, 446 type stainless steel fiber reinforced heat resistant concrete, high temperature resistant aggregate, three sodium phosphate, the first three (high aluminum powder, 446 type stainless steel fiber Reinforced heat-resistant concrete, high-temperature-resistant aggregate) according to the ratio of 1:2.5:3.5 (weight ratio), after mixing evenly, add 15% of its weight of trisodium phosphate, and add an appropriate amount of water after stirring evenly, and then directly pour it into the formwork, Use a vibrating pump to vibrate it to make it full, and it will be put into use 36 hours after it is fully formed.

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Abstract

The invention provides a furnace cover of a closed type calcium carbide furnace and a process for producing the same. The structure of the furnace cover comprises that: three electrode sealing ring devices are connected to electrode water cooling sealing sleeves; each electrode water cooling sealing sleeve is in welding connection with mounting base plates and water cooling rings of four chargingnozzles, and the water cooling rings are in welding connection with water cooling reinforcing rings outside the four charging nozzles; the water cooling reinforcing rings are in welding connection with a cover top outer ring of the furnace cover by reinforcing ribs; arc pipes are welded between the outer sides of the water cooling reinforcing rings and the reinforcing ribs; a plurality of furnacecover legs are welded on the cover top outer ring of the furnace cover; two layers of stainless steel screens and a screw-threaded round steel reinforcing skeleton arranged between the two layers of the stainless steel screens are welded on the position where a furnace cover skeleton is connected with a hollow block; a thermal insulation plate is arranged below the furnace cover legs; the furnacecover is provided with a furnace door frame, a furnace door and two chimney bases; the outer part of the furnace wall is in welding connection with furnace cover sealing and thermal insulation heat preservation protection plates; sealing materials filled between the protection plates and a wall form a complete furnace cover wall; and concrete is cast in the stainless steel screens connected with the skeleton and the reinforcing skeleton arranged between the screens to form the whole type furnace cover. The furnace cover and the production process have the advantages of improving the quality structure of material layers, greatly improving the technical operation mode and labor intensity and prolonging the service life.

Description

technical field [0001] The invention relates to the technical field of smelting equipment, in particular to a closed calcium carbide furnace cover and a manufacturing process. Background technique [0002] At present, the common sealed calcium carbide furnace cover at home and abroad is a combined furnace cover composed of six interlayer water-cooled jackets and a half-assembled electrode protection cover. Uneven heating produces large thermal stress and deformation. Due to the high hardness of the circulating cooling water of the calcium carbide furnace, it produces a large amount of Ca in the jacket of the furnace cover. 2+ , Mg 2+ , Fe 2+ Scale such as ions adheres to the surface of the jacket unevenly. Since the circulating cooling water of the calcium carbide furnace is an open circulating cooling water, the dirt brought into the equipment will interact with the scale and adhere to the inner wall of the jacket, resulting in constant cross-sectional area of ​​the jacke...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F27D1/18C04B35/66
Inventor 胡华生陈猛章黄勇欢
Owner YUNNAN YUNWEI CO LTD
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