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A kind of Portland cement dissolving agent

A technology of dissolving agent and cement stone, which is applied in the field of chemical cleaning technology and building materials, can solve the problems of complex cleaning agent formulation and components, and achieve the effect of good corrosion inhibition effect, corrosion inhibition, and short time.

Active Publication Date: 2019-05-28
YANGTZE UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] At present, the cleaning agents reported in the literature are all developed for "cement scale, cement dirt, cement stains", etc., and all have their own scope of application, but there are also some problems, such as the composition of some cleaning agents is very complicated

Method used

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  • A kind of Portland cement dissolving agent
  • A kind of Portland cement dissolving agent
  • A kind of Portland cement dissolving agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A Portland cement dissolving agent, the dissolving agent comprises the following components by weight:

[0041] 100 parts of water, 25 parts of earth acid, 2 parts of glue inhibitor, and 1.0 part of corrosion inhibitor are mixed and prepared. The test results are shown in Table 1.

[0042] The soil acid is prepared from hydrochloric acid and hydrofluoric acid at a volume ratio of 1:1, the mass percent concentration of hydrochloric acid is 35%, and the mass percent concentration of hydrofluoric acid is 30%.

[0043] The gum inhibitor is FeCl 3 , AlCl 3 , CaCl 2 Mixed according to the mass ratio of 1:1:1.

[0044] The corrosion inhibitor is polyphosphate ester synthesized from polyhydric alcohol and polyphosphoric acid.

[0045] The polyhydric alcohol is dipropylene glycol.

[0046] The polyphosphoric acid is made of phosphoric acid (H 3 PO 4 ) formed by heating and dehydration condensation.

[0047] The polyphosphate is obtained by synthesizing dipropylene glyco...

Embodiment 2

[0049] A Portland cement dissolving agent, the dissolving agent comprises the following components by weight:

[0050] 100 parts of water, 30 parts of earth acid, 3 parts of glue inhibitor, and 2.5 parts of corrosion inhibitor are mixed and prepared. The test results are shown in Table 1.

[0051] The soil acid is prepared from hydrochloric acid and hydrofluoric acid at a volume ratio of 2:1, the mass percentage concentration of the hydrochloric acid is 25%, and the mass percentage concentration of the hydrofluoric acid is 30%.

[0052] The gum inhibitor is FeCl 3 , AlCl 3 , CaCl 2 Mixed according to the mass ratio of 1:0.5:1.

[0053] The corrosion inhibitor is polyphosphate ester synthesized from polyhydric alcohol and polyphosphoric acid.

[0054] The polyhydric alcohol is dipropylene glycol.

[0055] The polyphosphoric acid is made of phosphoric acid (H 3 PO 4 ) formed by heating and dehydration condensation.

[0056] The polyphosphate is obtained by synthesis of ...

Embodiment 3

[0058] A Portland cement dissolving agent, the dissolving agent comprises the following components by weight:

[0059] 100 parts of water, 35 parts of earth acid, 4 parts of glue inhibitor, and 4 parts of corrosion inhibitor were prepared. The test results are shown in Table 1. The dissolution effect is as follows Figure 4 , 5 shown.

[0060] The soil acid is prepared from hydrochloric acid and hydrofluoric acid at a volume ratio of 3:1, the mass percent concentration of hydrochloric acid is 20%, and the mass percent concentration of hydrofluoric acid is 30%.

[0061] The gum inhibitor is FeCl 3 , AlCl 3 , CaCl 2 Mixed according to the mass ratio of 1:0.5:0.5.

[0062] The corrosion inhibitor is polyphosphate ester synthesized from polyhydric alcohol and polyphosphoric acid.

[0063] The polyhydric alcohol is dipropylene glycol.

[0064] The polyphosphoric acid is made of phosphoric acid (H 3 PO 4 ) formed by heating and dehydration condensation.

[0065] The polyph...

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Abstract

The invention belongs to the technical field of chemical cleaning and building materials, and in particular relates to a Portland cement stone dissolving agent. The Portland cement stone dissolving agent comprises the following components by weight: 20 to 35 parts of mud acid, 0.1 to 5 parts of an adhesive inhibiting agent and 0.1 and 5 parts of a corrosion inhibitor. The Portland cement stone dissolving agent is applicable to dissolution and removal of cement stones adherent to the inner surface and the outer surface of a variety of metal and metal alloy facilities and instruments, can be fast chemically reacted with the cement stones to produce fine particle materials, due to different thickness and weight of the cement stones, the cement stones can be removed by washing with water after different time of reaction, corrosion on the metal facilities and other matrix materials can be controlled, after the removal of the cement stones, original performances of the metal facilities and instruments are not affected, harm to operating personnel is small, and the Portland cement stone dissolving agent also has other excellent characteristics, can be widely applied in the removal of the cement stones on the metal facilities, and has good economic and environmental benefits.

Description

technical field [0001] The invention belongs to the technical field of chemical cleaning and the field of building materials, and in particular relates to a Portland cement stone dissolving agent. Background technique [0002] Cement, powdery hydraulic inorganic gelling material. After adding water and stirring, it becomes a slurry, which can be hardened in the air or better hardened in water, and can firmly bind sand, stone and other materials together. Cement is classified according to its use and performance: the cement commonly used in general civil construction projects mainly refers to the six types of cement specified in GB175-2007, namely Portland cement, ordinary Portland cement, slag Portland cement, and pozzolan High-quality Portland cement, fly ash Portland cement and composite Portland cement; cement for special purposes, such as oil well cement, road Portland cement; cement with outstanding performance, such as rapid hardening Portland cement, low heat Slag p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23G1/06
CPCC23G1/066
Inventor 陈武陈祖林李中宝王景博刘洋张珊慧
Owner YANGTZE UNIVERSITY
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