Multilayer roaster building method and hearth replacing method

A technology of a multi-layer roasting furnace and a replacement method is applied to the masonry method of the multi-layer roasting furnace and the field of hearth replacement.

Inactive Publication Date: 2012-04-18
PANGANG GRP ENG TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the defects that the existing multi-layer roasting furnace masonry method is prone to settlement and deformation, the technical problem to be solved by the present invention is to provide a multi-layer roaster masonry method that is easier to ensure the quality of the masonry

Method used

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  • Multilayer roaster building method and hearth replacing method
  • Multilayer roaster building method and hearth replacing method
  • Multilayer roaster building method and hearth replacing method

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Experimental program
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Embodiment

[0039] The overhaul construction of a roaster in a factory. The multi-layer baking furnace has a total of eleven hearths, and each layer of arch angle bricks is 5°38'. The construction process is as follows.

[0040] (1) Pre-laying the hearth

[0041] In order to check the matching of bricks and ensure the quality of masonry, the eleven-layer hearth bricks are processed, polished and pre-built, such as Figure 3a and Figure 3b As shown, the masonry is not allowed to have misalignment or partial unevenness. The "reverse arch method" is used for pre-masonry, that is, the working surface of the hearth brick 3 is placed on a 6.5m×6.5m pre-installed steel platform 8 for brick selection. Masonry to ensure the flatness of the working surface, and then pre-lay it according to the masonry drawing of each layer of the vault. The pre-laying procedure is as follows:

[0042] Select bricks→grind bricks→pre-laying→number→install baskets.

[0043] (2) Determine the ratio of mud between the hearth ...

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Abstract

The invention discloses a multilayer roaster building method and a hearth replacing method which are easy to ensure the building quality, wherein the building method comprises the following steps of: manufacturing a hearth arch vaulting; building the wall and each layer of skew bricks of a roaster; installing the hearth arch vaulting at a position at a bottommost layer, building a hearth at the bottommost layer, and sequentially upwards installing the hearth arch vaulting and building the hearth layer by layer, wherein when the hearth arch vaulting is installed, the installation height of thehearth arch vaulting is more than the designed hearth position height; and after the slurry of a hearth brick joint is initially set, dismantling the hearth arch vaulting. Hearth bricks are firstly selected, prebuilt and numbered, and a slurry test before hearth building is done. In the hearth replacing method thereof, when the hearth arch vaulting is installed, the installation height of the hearth arch vaulting is more than the designed hearth position height, and the hearth bricks are built according to prebuilt numbers. The invention can effectively overcome hearth sinking, improves the building efficiency and quality, reduces the fault rate, saves the maintenance cost and can be used for the daily maintenance in heavy repair, medium repair and periodical repair and the building of newly-established roaster linings.

Description

Technical field [0001] The invention relates to a multi-layer roasting furnace, in particular to a method for building a multi-layer roasting furnace and a hearth replacement method. Background technique [0002] Multi-layer roasting furnace is an important thermal equipment for the production of vanadium products, and its service life and maintenance cycle directly determine its production capacity. The feed inlet of the multi-layer roasting furnace is set on the top of the furnace. The main structure of the furnace body includes the furnace shell, the inner lining of the furnace shell, namely the furnace wall, and the hearth arranged in the upper and lower layers of the furnace wall, in addition to the furnace body. The central shaft and the pickle arm mounted on the central shaft. The part of the furnace wall in contact with the hearth uses arch-foot bricks that are different from ordinary furnace wall bricks, and the brick arch of the arch-foot bricks is 5°38'. The surface ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F27D1/00
Inventor 蒋辉何天均
Owner PANGANG GRP ENG TECH
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