Plaster for acid-resistant anti-corrosion carbon brick and preparation method of plaster

A technology for cement and carbon bricks, which is applied in the field of cement for acid-resistant and anti-corrosion carbon bricks and its preparation, can solve the problems of high ash content of artificial graphite powder and anthracite coal, poor wettability of carbonaceous materials, and difficult control of curing process, and achieves low ash content. , Short curing time, small heat release effect

Active Publication Date: 2014-12-24
WUGANG REFRACTORY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Artificial graphite powder and anthracite powder have a large ash content, and they are easy to form holes and cause acid penetration when used for a long time under high temperature and acidic conditions.
Due to the slow curing speed of furan resin, it is generally necessary to add a curing agent to accelerate the curing speed, but the curing process is not easy to control, and its wettability with carbonaceous materials is poor, so it is not easy to construct
Liquid water glass is not suitable for use in acidic environments containing fluoride ions, because in acidic environments, fluoride ions will react with silicon dioxide in liquid water glass to form silicon tetrafluoride (ie 4HF+SiO 2 =SiF 4 +2H 2 O), easy to form pores, leading to acid penetration

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The following raw materials are proportioned by weight percentage (wt%):

[0019] The amount of furfuryl alcohol resin added is 25%, and the density is ≥1.18g / cm 3 ;

[0020] The amount of phenolic resin added is 5%, the solid content is ≥80%, and the residual carbon content is ≥30%;

[0021] The amount of hexamethylenetetramine added is 0.5%, and the particle size is ≤0.15mm;

[0022] The amount of petroleum calcined coke added is 69.5%, the C content is ≥95%, the ash content is ≤3%, and the particle size is ≤0.15mm;

[0023] Add 3% phosphoric acid as curing agent, mass concentration ≥ 85%.

[0024] Before use, premix petroleum calcined coke and hexamethylenetetramine according to the ratio for 5 minutes, then add furfuryl alcohol resin and phenolic resin and stir for 10 minutes, and finally add the external curing agent phosphoric acid and stir for 15 minutes. The mortar 1 for acid-resistant and anti-corrosion carbon bricks was obtained.

Embodiment 2

[0026] According to following raw materials by weight percentage (wt%) proportion batching:

[0027] The addition amount of furfuryl alcohol resin is 10%, and the density is ≥1.18g / cm 3 ;

[0028] The amount of phenolic resin added is 15%, the solid content is ≥80%, and the residual carbon content is ≥30%;

[0029] The amount of hexamethylenetetramine added is 3%, and the particle size is ≤0.15mm;

[0030] The amount of pitch calcined coke added is 72%, C content ≥ 95%, ash content ≤ 3%, particle size ≤ 0.15mm;

[0031] Add 15% phosphoric acid as curing agent, mass concentration ≥ 85%.

[0032] Before use, under normal temperature environment, premix pitch calcined coke and hexamethylenetetramine according to the proportion for 5 minutes, then add furfuryl alcohol resin and phenolic resin and stir for 10 minutes, finally add external curing agent phosphoric acid and stir for 15 minutes, and the The mortar 2 for acid-resistant and anti-corrosion carbon bricks was obtained. ...

Embodiment 3

[0034] The following raw materials are proportioned by weight percentage (wt%):

[0035] The amount of furfuryl alcohol resin added is 20%, and the density is ≥1.18g / cm 3 ;

[0036] The amount of phenolic resin added is 10%, the solid content is ≥80%, and the residual carbon content is ≥30%;

[0037] The amount of hexamethylenetetramine added is 1.5%, and the particle size is ≤0.15mm;

[0038] The amount of pitch calcined coke added is 68.5%, the C content is ≥95%, the ash content is ≤3%, and the particle size is ≤0.15mm;

[0039] Add 10% phosphoric acid as curing agent, mass concentration ≥ 85%.

[0040] Before use, under normal temperature environment, premix pitch calcined coke and hexamethylenetetramine according to the proportion for 5 minutes, then add furfuryl alcohol resin and phenolic resin and stir for 10 minutes, finally add external curing agent phosphoric acid and stir for 15 minutes, and the The mortar 3 for acid-resistant and anti-corrosion carbon bricks was...

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Abstract

The invention provides plaster for an acid-resistant anti-corrosion carbon brick. The plaster comprises the following raw materials in percentage by mass: 10%-25% of furfuryl alcohol resin, 5%-15% of phenolic resin, 0.5%-3% of hexamethylenetetramine, the balance of one of calcined petroleum coke, electro-forged clean coal or asphalt calcined coke, and 3%-15% of external curing agent phosphoric acid. The plaster for the acid-resistant anti-corrosion carbon brick disclosed by the invention is rapid in solidifying reaction, low in heat release, stable in chemical performance in an acid environment, and not easy to permeate.

Description

technical field [0001] The invention belongs to the field of anti-corrosion materials, and specifically refers to an acid-resistant anti-corrosion carbon brick mortar and a preparation method thereof. Background technique [0002] Acid-resistant and anti-corrosion carbon bricks are widely used as lining anti-corrosion materials for pickling tanks and electroplating tanks in the electroplating industry, dissolution tanks in the paper industry, reaction tanks and storage tanks in the chemical industry. In the process of building anti-corrosion carbon bricks, acid-resistant anti-corrosion mortar is usually used to fill the gaps. The common raw materials for acid-resistant and anti-corrosion cement are artificial graphite powder or anthracite coal powder, and furan resin or liquid water glass is used as a binder. [0003] Artificial graphite powder and anthracite powder have relatively large ash content, and they are easy to form holes and cause acid penetration under high-temp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/12
Inventor 徐志华田先明周勇周辉刘良兵易碧辉雷中兴洪学勤龚仕顺
Owner WUGANG REFRACTORY CO LTD
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