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Joint material for SO2 flue joint connection construction and preparation method of joint material

A technology of gap connection and joint material, which is applied in the field of joint material for SO2 flue gap connection construction and its preparation, can solve problems such as being easily corroded, and achieve good construction performance, good strength and thermal shock resistance, and good erosion and the effect of corrosion

Inactive Publication Date: 2020-04-10
江苏润美新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the seam material of the flue in the prior art under high temperature SO 2 Defects that are easily corroded when used in an atmosphere provide a SO 2 Joint compound for chimney gap connection construction and preparation method thereof

Method used

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  • Joint material for SO2 flue joint connection construction and preparation method of joint material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] a kind of SO 2 The joint material for the construction of the gap connection of the flue, including the following components in parts by mass:

[0044] 22 parts of super-grade high-bauxite with a particle size of 0.01-4mm

[0045] 30 parts of mullite with a particle size of 0.01-4mm

[0046] 8 parts of corundum with a particle size of 0.01-2mm

[0047] 7 parts clay

[0048] 3 parts kaolin

[0049] 5 parts of silicon dioxide superfine powder with a particle size of 10 μm

[0050] 10 parts of mullite superfine powder with a particle size of 10 μm

[0051] 5 parts of α-alumina powder

[0052] Quartz fine powder 2 parts

[0053] Silicon carbide superfine powder 2 parts

[0054] Kyanite 3 parts

[0055] 3 parts andalusite

[0056] 0.2 parts of lignosulfonate

[0057] 25 parts of pulp waste liquid.

[0058] The preparation method of the present embodiment is as follows:

[0059] S1. Weigh each material according to the proportion, first put the materials except l...

Embodiment 2

[0063] a kind of SO 2 The joint material for the construction of the gap connection of the flue, including the following components in parts by mass:

[0064] 5 parts of super high alumina bauxite with particle size 0.01-4mm

[0065] 35 parts of mullite with a particle size of 0.01-4mm

[0066] 18 parts of corundum with a particle size of 0.01-2mm

[0067] 5 parts clay

[0068] 3 parts kaolin

[0069] 6 parts of silicon dioxide superfine powder with a particle size of 10 μm

[0070] 11 parts of mullite superfine powder with a particle size of 10 μm

[0071] 8 parts of α-alumina powder

[0072] Quartz fine powder 3 parts

[0073] Silicon carbide superfine powder 2 parts

[0074] 6 parts of andalusite

[0075] Sodium hexametaphosphate 0.3 parts

[0076] 28 parts of pulp waste liquid.

[0077] The preparation method of the present embodiment is as follows:

[0078] S1. Weigh each material according to the proportion, first put the materials except sodium hexametaphospha...

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Abstract

The invention discloses a joint material for SO2 flue joint connection construction, which is divided by special-grade high-alumina bauxite, mullite and corundum as basic formulas, and is added with clay, kaolin, superfine powder, lignosulfonate, sodium hexametaphosphate and pulp waste liquid, so that the joint material has favorable workability. Silicon carbide, alpha-aluminum oxide powder, quartz fine powder and other materials are further added into the joint material, acid and alkali erosion and corrosion can be well resisted, and due to the reaction characteristics of kyanite, andalusite,quartz and other components in the joint material at the high temperature, the joint material can well obtain medium-high temperature expansion; the expansion of the joint material at high temperature can block pores in the joint material, thereby ensuring that the joint of flue gas is not easy to erode and corrode by a high-concentration SO2 gas and alkali metals, and achieving the purpose of noleakage of the flue gas.

Description

technical field [0001] The present invention relates to a kind of SO 2 The invention discloses a joint material for the construction of the gap connection of the flue and a preparation method thereof. Background technique [0002] The high concentration of SO in most high temperature graphitization furnaces 2 The masonry method of refractory bricks and refractory mud is used for flue gas emission. Therefore, common refractory mud or conventional refractory materials are generally used for repairing the joints of the flue, and these materials are suitable for high temperature SO 2 In the atmosphere environment, the joint material is often corroded due to the corrosion of sulfur dioxide and alkali metal, resulting in cracks or peeling off in the joint area, causing smoke leakage, which forces the furnace to be shut down for maintenance, which brings great inconvenience to production. Contents of the invention [0003] The technical problem to be solved by the present inve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B35/185C04B35/103
CPCC04B35/103C04B35/185C04B35/66C04B2235/3418C04B2235/3427C04B2235/349C04B2235/3826C04B2235/447C04B2235/96C04B2235/9692
Inventor 邓勇跃景夫生
Owner 江苏润美新材料有限公司
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