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Acid resistant clay and preparation method thereof

A technology of cement and sodium silicate solution, which is applied in the field of cement and preparation, can solve the problems of short service life of steel flue, high manufacturing cost and difficulty in popularization, and achieve the effect of small linear expansion coefficient, less ingredients and simple preparation process

Inactive Publication Date: 2007-08-15
孙学明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the life of the steel flue is very short. If the flue is made of metals such as copper and lead with better acid resistance, although the life of the flue can be extended, the manufacturing cost is too high to be popularized; and the flue made of materials such as concrete It is also difficult to escape the bad luck of being corroded by acid

Method used

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  • Acid resistant clay and preparation method thereof

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Effect test

specific Embodiment approach 1

[0007] Specific implementation mode 1: The acid-resistant cement in this embodiment is formed by mixing aggregates and sticky materials; wherein the aggregate is composed of glass beads with a particle size of 200-500 meshes accounting for 20% to 30% of the mass of the acid-resistant cement and accounting for 20% of the mass of the acid-resistant cement. ~30% of acid-resistant powder particles, the binder consists of modified sodium silicate solution accounting for 40%-50% of the mass of acid-resistant mastic, urea and / or urea-formaldehyde resin accounting for 4%-5% of the mass of acid-resistant mastic and accounting for the mass of acid-resistant mastic 0.1% to 1% castor oil composition.

specific Embodiment approach 2

[0008] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the acid-resistant powder is composed of two or more components of diatomite, zircon sand, kaolin, and silica powder.

specific Embodiment approach 3

[0009] Specific embodiment three: the difference between this embodiment and specific embodiment one is that the aggregate consists of 300-400 mesh glass beads accounting for 23% to 27% of the mass of the acid-resistant mastic and 23% to 27% of the mass of the acid-resistant mastic. Composition of acid-resistant powder.

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Abstract

The preparation method for the acid resistant daub comprises: 1. pouring both the 20~30% micro glass bead with size as 200~500 items and 20~30% acid resistant powder into the mixer to stir for 40~70min and obtain the aggregate; 2. pouring all of the 40~50% modified sodium silicate solution, 4~5% urea and / or urea formaldehyde resin, and 0.1~1% castor oil into the slurry-type stirring kettle for 20~40min to obtain the sticking material; 3. mixing the aggregate and sticking material. This invention has well physical properties to overcome the acid corrosion with low cost.

Description

technical field [0001] The invention relates to a cement and a preparation method. Background technique [0002] Acid corrosion begins on metal and building surfaces and progresses inward. According to statistics, the annual loss caused by acid corrosion in the world exceeds tens of billions of dollars, so the problem of metal and buildings being corroded by acid has attracted more and more attention, especially the problem of acid corrosion of flue ducts. Taking the steel flue as an example, a large amount of combustion gas generated by fuel combustion in the boiler is discharged from the flue, and sulfur dioxide SO 2 As the main component of combustion gas, the gas is oxidized with water vapor to form sulfurous acid H 2 SO 3 , and then oxidized to highly corrosive sulfuric acid H 2 SO 4 , sulfuric acid H 2 SO 4 With iron Fe in the steel flue and oxygen O in the air 2 The reaction produces iron sulfite FeSO 4 and water; after that iron sulfite FeSO 4 Gradually oxi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B14/22C04B14/04C04B111/23
Inventor 孙学明那维君邢玉清
Owner 孙学明