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Lime calciner paint liner and forming method thereof

A calciner and coating technology, applied in the field of lime calciner lining body and its molding, can solve the problems of difficult construction quality assurance, troublesome repair work, long construction period, etc., and achieve simple molding method, efficient molding quality, and improved quality and the effect of service life

Active Publication Date: 2014-12-31
HUZHOU ZHEBAO METALLURGY AUX MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the structure of the lime calcination furnace is not a regular cylindrical shape, but a vase shape with a large middle and two small ends, the furnace body is divided into a preheating section, a calcination section and a cooling section from bottom to top, so the inner lining is built with shaped bricks. It is cumbersome and difficult to construct or use amorphous refractory and thermal insulation materials through formwork. It is not only time-consuming and labor-intensive, but also has a long construction period, and the construction quality is not easy to guarantee; trouble, difficulty

Method used

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  • Lime calciner paint liner and forming method thereof
  • Lime calciner paint liner and forming method thereof
  • Lime calciner paint liner and forming method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1, a kind of lime calcination furnace, furnace body is in the shape of a vase with a big middle and two small ends, with a height of 17m. The furnace body is in the shape of a vase with a maximum inner diameter of 6m. The outer periphery of the steel plate shell 1 is provided with reinforcing gussets 5, and the inner wall of the shell 1 is uniformly welded with a number of paint anchors 7 made of radial and steel bars. The length of the paint anchors is slightly smaller than the total thickness of the lining body of the lime calciner. In the length direction of the paint anchor, a marker 71 is provided corresponding to the thickness of the thermal insulation layer and the intermediate lining layer. The marker 71 of this embodiment is a connecting short rod perpendicular to the axial direction of the paint anchor 7, and the bottom of the furnace body is provided with The combustion chamber 6 communicated with the inner cavity of the furnace; the inner lining ...

Embodiment 2

[0035] Embodiment 2, a lime calcination furnace, the furnace body is in the shape of a vase with a large center and two small ends, with a height of 15m and a maximum inner diameter of 5m. Its overall structure is the same as that of Embodiment 1. And the coating formula of the thermal insulation coating layer 2 of the present embodiment, its composition and composition ratio by weight percentage are: the 80 bauxite 19.5 that particle size is 10~5mm, the 80 bauxite 12 that particle size is 5~3mm, the particle size is 80 bauxite 11 with a particle size of 3 to 1 mm, 80 bauxite with a particle size of less than 1 mm 7, expanded perlite 15, kyanite 3 with a particle size of 1 mm or less, 200 mesh 88 bauxite 16.67, microsilica powder 5, pure calcium aluminate cement 10. Organic explosion-proof fiber 0.03, sodium tripolyphosphate 0.2, hydroxyethyl cellulose (HEC) 0.6; the coating formula of the intermediate lining coating layer 3, its composition and composition ratio by weight pe...

Embodiment 3

[0038] Example 3, a lime calciner, the furnace body is in the shape of a vase with a large middle and two small ends, with a height of 13m and a maximum inner diameter of 4m. A number of radial paint anchors 7 on the inner wall of the housing 1 and markers 71 corresponding to the thickness of the thermal insulation layer and the intermediate liner in the length direction of the paint anchors are ceramic products. The inner lining is composed of a thermal insulation coating layer 2 , an intermediate lining coating layer 3 and a working coating layer 4 , wherein the outer wall of the thermal insulation coating layer 2 is closely attached to the inner wall of the shell 1 . The coating formula of the thermal insulation coating layer 2 in this embodiment, its constituents and composition ratio by weight percentage are: 80 alumina 20 with a particle size of 10-5 mm, 80 alumina 11.0 with a particle size of 5-3 mm, and a particle size of 3 ~1mm 80 bauxite 10.0, 80 bauxite with parti...

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Abstract

The invention relates to a lime calciner paint liner and a forming method thereof. The lining comprises a thermal insulation layer, a middle lining layer and a working layer which are sequentially attached to the inner wall of the shell of the lime calciner, wherein the middle lining layer and the working layer are sequentially combined into an integral body and are respectively a paint layer according to a certain formula. The forming method comprises the following steps: thoroughly mixing the raw materials of the paint uniformly, adding into a feed hopper of a pneumatic rotary spray gun, sending the raw materials in the feed hopper into the spray gun by compressed air through a rubber tube, mixing the raw materials with high-pressure water in the spray gun to form a slurry, and spraying the slurry onto a construction working surface layer by layer. The invention provides a novel liner and a forming method thereof for the lime calciner, thereby greatly enhancing the forming efficiency of the lime calciner liner, lowering the production cost, greatly enhancing the quality of the lime calciner liner, and greatly prolonging the service life of the lime calciner liner; and the method can also be efficiently used for repairing local damage of a lime calciner paint liner or refractory cast-forming liner.

Description

technical field [0001] The invention relates to a lining body of a lime calciner composed of a coating layer and a forming method thereof. Background technique [0002] Existing lime calciners for producing quicklime usually consist of a shell and an inner lining. The inner lining is generally composed of a thermal insulation layer, an intermediate lining layer and a working layer. The thermal insulation layer is the outer layer of the inner lining and is connected to the inner wall of the shell. At present, the thermal insulation layer, intermediate lining layer and working layer of the inner lining are basically built on the inner wall of the furnace shell by using different refractory and thermal insulation materials, or adopt different unshaped refractory and thermal insulation materials to pass through The formwork is poured on the inner wall of the furnace shell in turn to form an integral inner lining. However, since the structure of the lime calcination furnace is n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B2/10C04B35/66
Inventor 虞畅汪强严培忠程国庆张玉琴翁小燕费国荣费方冯杰
Owner HUZHOU ZHEBAO METALLURGY AUX MATERIALS
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