CN111592366A - Environment-friendly multi-element nano wear-resistant corrosion-resistant vitrified lining material - Google Patents
Environment-friendly multi-element nano wear-resistant corrosion-resistant vitrified lining material Download PDFInfo
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- CN111592366A CN111592366A CN202010351421.4A CN202010351421A CN111592366A CN 111592366 A CN111592366 A CN 111592366A CN 202010351421 A CN202010351421 A CN 202010351421A CN 111592366 A CN111592366 A CN 111592366A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
Abstract
The invention discloses an environment-friendly multi-element nano wear-resistant corrosion-resistant vitrified lining material, which belongs to the technical field of refractory materials, and particularly relates to the technical field of castable materials, aiming at solving the problems that an anticorrosive material is easy to fall off and inconvenient for local maintenance and cannot maintain long-term acid resistance due to pore corrosion, the lining material comprises 60 percent of low-aluminum aggregate, 30 percent of low-aluminum powder, 8.6 percent of binding agent, 0.15 percent of water reducing agent and 1.25 percent of processed hollow organic water-insoluble fiber, acid-resistant solution does not flow out due to capillary adsorption force in the construction process, so that the acid-resistant solution is effectively stored, the premature acid-resistant seepage is avoided, the acid-resistant solution is released due to the heating damage of a fiber structure in the high-temperature use process, the acid-resistant solution is blocked and infiltrated on pore channels which are formed and cannot be avoided in a large amount of conventional castable materials, so that the acid liquid, the lining material has low cost and long service life.
Description
Technical Field
An environment-friendly multi-element nano wear-resistant corrosion-resistant vitrified lining material is used for producing lining materials of desulfurizing towers, chimneys and the like, belongs to the technical field of refractory materials, and particularly relates to the technical field of castable materials.
Background
At present, along with the improvement of environmental protection requirements, more and more sulfur-containing flue gas can be discharged after reaching the standard through desulfurization treatment. The existing flue gas desulfurization method frequently used is wet desulfurization, namely a lime-gypsum method, lime slurry is sprayed in a desulfurization tower to neutralize sulfur dioxide in flue gas, and in the process of spraying the lime slurry, the sulfur-containing flue gas is cooled and is accompanied by moisture, SO2 and the like in the flue gas are converted into strong corrosive acid liquid such as sulfurous acid and the like, SO that the corrosion to linings of the desulfurization tower and a chimney is increased, and the normal production and the environmental protection stability of an enterprise are seriously influenced.
In order to solve the problems, the current common practice is to scrape and coat glass flake daub, heavy fluororubber or cast acid-resistant castable material and the like on the lining, in the conventional corrosion prevention method, the scraped glass flake daub or heavy fluororubber has strict construction requirements, and although the corrosion prevention effect is good, the glass flake daub or heavy fluororubber is easy to fall off and cannot be locally maintained in use, so that the desulfurization facility cannot meet the requirement of long-term continuous operation.
Although the pouring of the acid-resistant castable overcomes the problems, the castable in the conventional technology inevitably generates a part of air holes, the main erosion channel is the air hole, and the generation of the air holes is mainly in the part of the basic fine powder, so that the long-acting acid resistance requirement cannot be fundamentally ensured, and the problem of acid resistance cannot be fundamentally solved by adopting methods such as high-density aggregate, acid-resistant aggregate and the like.
Disclosure of Invention
The invention aims to: provides an environment-friendly multi-element nano wear-resistant corrosion-resistant ceramic lining material, which solves the technical problems that the existing corrosion-resistant material is easy to fall off and inconvenient for local maintenance and cannot maintain long-term acid resistance due to pore corrosion.
The technical scheme adopted by the invention is as follows:
the environment-friendly multi-element nano wear-resistant corrosion-resistant vitrified inner lining material comprises, by weight, 50-70% of low-aluminum aggregate, 20-40% of low-aluminum powder, 5-15% of a binding agent, 0.1-0.2% of a water reducing agent and 0.1-3% of processed hollow organic water-insoluble fiber.
According to the technical scheme, the processed hollow organic water-insoluble fiber is provided with a capillary channel structure and is soaked in acid-resistant solution and dried to obtain a product, the hollow organic water-insoluble fiber is soaked in the acid-resistant solution and is added into the castable after being dried, the acid-resistant solution is stored in a fiber tube of the hollow organic water-insoluble fiber, the capillary phenomenon is a simple technological phenomenon, through the phenomenon, the acid-resistant solution does not flow out due to the capillary adsorption force in the construction process and is effectively stored, the premature seepage of acid resistance is avoided, the acid-resistant solution is released due to the fact that the fiber structure is damaged by heating in the high-temperature use process, the acid-resistant solution is blocked and infiltrated on a large number of air hole channels which are formed in the structure and cannot be avoided in the conventional castable, so that acidic liquid in the environment is difficult to enter a body of the castable to damage the acidic liquid, the long-acting lining material has low cost and the service life of the long-acting lining material is more than 2 times of that of the acid-resistant castable material on the current market.
Preferably, the lining material comprises, by weight, 55-65% of low-aluminum aggregate, 25-35% of low-aluminum powder, 8-12% of a binding agent, 0.12-0.18% of a water reducing agent and 1-2% of processed hollow organic water-insoluble fiber.
More preferably, the inner lining material comprises, by weight, 60% of low-aluminum aggregate, 30% of low-aluminum powder, 8.6% of a binding agent, 0.15% of a water reducing agent, and 1.25% of processed hollow organic water-insoluble fiber.
Preferably, the processed hollow organic water-insoluble fiber is prepared by immersing the hollow organic water-insoluble fiber in an acid-resistant solution for 15-30 minutes, and naturally drying the acid-resistant solution of the epidermis.
Preferably, the hollow organic water-insoluble fiber has a length of 3 to 6mm and a diameter of 35 to 45 μm.
More preferably, the hollow organic water-insoluble fiber has a length of 5mm and a diameter of 40 μm.
More preferably, the immersion time is 22 minutes.
More preferably, the acid-resistant solution is a weak acid having a pH of 5.5 to 7.
Preferably, the binding agent is sulphoaluminate cement.
Preferably, the water reducing agent is an SM high-efficiency water reducing agent or a polyphosphoric acid type water reducing agent.
In the application, the production process of the lining material is a conventional production process in the field, namely, according to the weight percentage, the low-aluminum aggregate (particles), the low-aluminum powder, the bonding agent (such as sulphoaluminate cement and the like), the water reducing agent and the processed hollow organic water-insoluble fiber are uniformly mixed in a stirrer and packaged.
The low-aluminum aggregate and the low-aluminum powder are from bauxite and the like.
The hollow organic water-insoluble fiber is commercially available, and any organic hollow fiber can be used.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. according to the invention, the hollow organic water-insoluble fiber is soaked in acid-resistant solution, aired and added into the castable, the acid-resistant solution is stored in a fiber tube of the hollow organic water-insoluble fiber, the capillary phenomenon is a simple technological phenomenon, and by the phenomenon, the acid-resistant solution is effectively stored in the construction process because the capillary adsorption force does not flow out, so that the acid resistance is prevented from premature seepage, and in the high-temperature use process, the acid-resistant solution is released because the fiber structure is damaged by heating, and is blocked and infiltrated on a large number of pore passages which are formed and can not be avoided in the conventional castable, so that the acid liquid in the environment is difficult to enter the castable body to damage the castable;
2. the lining material is a long-acting lining material, has low cost and simple production process, and has the service life more than 2 times of that of the acid-resistant castable in the current market.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
The environment-friendly multi-element nano wear-resistant corrosion-resistant vitrified inner lining material comprises, by weight, 60% of low-aluminum aggregate, 30% of low-aluminum powder, 8.6% of a binding agent, 0.15% of a water reducing agent and 1.25% of processed hollow organic water-insoluble fiber.
The preparation method of the processed hollow organic water-insoluble fiber comprises soaking the hollow organic water-insoluble fiber in acid-resistant solution for 15 min, and naturally air drying the acid-resistant solution on epidermis.
The hollow organic water-insoluble fiber had a length of 4mm and a diameter of 40 μm.
The production process of the lining material is a conventional production process in the field, namely according to the weight percentage, the low-aluminum aggregate (particles), the low-aluminum powder, the bonding agent, the water reducing agent and the processed hollow organic water-insoluble fiber are uniformly mixed in a stirrer and packaged.
Example 2
On the basis of the embodiment 1, the environment-friendly multi-element nano wear-resistant corrosion-resistant vitrified inner lining material comprises 55% of low-aluminum aggregate, 30% of low-aluminum powder, 12.85% of binding agent, 0.15% of water reducing agent and 2% of processed hollow organic water-insoluble fiber in percentage by weight.
The preparation method of the processed hollow organic water-insoluble fiber comprises soaking hollow organic water-insoluble fiber in acid-resistant solution for 30 min, and naturally air drying epidermis acid-resistant solution.
The hollow organic water-insoluble fiber had a length of 3mm and a diameter of 35 μm.
The preparation method is the same as example 1.
Example 3
On the basis of the embodiment 1, the environment-friendly multi-element nano wear-resistant corrosion-resistant vitrified inner lining material comprises 65 percent of low-aluminum aggregate, 25 percent of low-aluminum powder, 6.85 percent of bonding agent, 0.15 percent of water reducing agent and 3 percent of processed hollow organic water-insoluble fiber according to weight percentage.
The preparation method of the processed hollow organic water-insoluble fiber comprises soaking hollow organic water-insoluble fiber in acid-resistant solution for 22 min, and naturally air drying epidermis acid-resistant solution.
The hollow organic water-insoluble fiber had a length of 6mm and a diameter of 45 μm.
The preparation method is the same as example 1.
Example 4
On the basis of the embodiment 1, the environment-friendly multi-element nano wear-resistant corrosion-resistant vitrified lining material comprises, by weight, 60% of low-aluminum aggregate, 25% of low-aluminum powder, 14.3% of a binding agent, 0.2% of a water reducing agent and 0.5% of processed hollow organic water-insoluble fiber.
The preparation method of the processed hollow organic water-insoluble fiber comprises soaking the hollow organic water-insoluble fiber in acid-resistant solution for 20 min, and naturally air drying the acid-resistant solution on epidermis.
The hollow organic water-insoluble fiber had a length of 5mm and a diameter of 40 μm.
The preparation method is the same as example 1.
Example 5
On the basis of the embodiment 1, the environment-friendly multi-element nano wear-resistant corrosion-resistant vitrified inner lining material comprises, by weight, 70% of low-aluminum aggregate, 20% of low-aluminum powder, 7.9% of a binding agent, 0.1% of a water reducing agent and 2% of processed hollow organic water-insoluble fiber.
The preparation method of the processed hollow organic water-insoluble fiber comprises soaking the hollow organic water-insoluble fiber in acid-resistant solution for 18 min, and naturally air drying the acid-resistant solution on epidermis.
The hollow organic water-insoluble fiber had a length of 5mm and a diameter of 40 μm.
The preparation method is the same as example 1.
The physical and chemical indexes of the examples are shown in Table 1.
TABLE 1 physicochemical indices of interlinings prepared in examples 1-4
In the above examples, the acid-resistant solution is a weak acid with a pH of 5.5 to 7, the binder is sulphoaluminate cement, and the water reducing agent is an SM high efficiency water reducing agent or a polyphosphoric acid type water reducing agent.
Any method of pouring the acid-resistant liquid into the pouring material based on the tiny capillary adsorption, which does not damage the structure during the production and construction process and can make the acid-resistant liquid seep out during the use process to achieve high acid-resistant performance is within the protection scope of the patent.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a wear-resisting anticorrosive vitrified lining material of many units of environment-friendly nanometer which characterized in that: according to weight percentage, the inner lining material comprises 50-70% of low-aluminum aggregate, 20-40% of low-aluminum powder, 5-15% of binding agent, 0.1-0.2% of water reducing agent and 0.1-3% of processed hollow organic water-insoluble fiber.
2. The environment-friendly multi-element nano wear-resistant corrosion-resistant ceramic lining material as claimed in claim 1, wherein: the lining material comprises, by weight, 55-65% of low-aluminum aggregate, 25-35% of low-aluminum powder, 8-12% of a binding agent, 0.12-0.18% of a water reducing agent and 1-2% of processed hollow organic water-insoluble fiber.
3. The environment-friendly multi-element nano wear-resistant corrosion-resistant ceramic lining material as claimed in claim 2, wherein: according to the weight percentage, the inner lining material comprises 60 percent of low-aluminum aggregate, 30 percent of low-aluminum powder, 8.6 percent of bonding agent, 0.15 percent of water reducing agent and 1.25 percent of processed hollow organic water-insoluble fiber.
4. The environment-friendly multi-element nano wear-resistant corrosion-resistant ceramic lining material as claimed in any one of claims 1 to 3, wherein: the preparation method of the processed hollow organic water-insoluble fiber comprises soaking the hollow organic water-insoluble fiber in acid-resistant solution for 15-30 min, and naturally air drying the acid-resistant solution.
5. The environment-friendly multi-element nano wear-resistant corrosion-resistant ceramic lining material as claimed in claim 4, wherein: the hollow organic water-insoluble fiber has a length of 3-6mm and a diameter of 35-45 μm.
6. The environment-friendly multi-element nano wear-resistant corrosion-resistant ceramic lining material as claimed in claim 5, wherein: the hollow organic water-insoluble fiber had a length of 5mm and a diameter of 40 μm.
7. The environment-friendly multi-element nano wear-resistant corrosion-resistant ceramic lining material as claimed in claim 4, wherein: the immersion time was 22 minutes.
8. The environment-friendly multi-element nano wear-resistant corrosion-resistant ceramic lining material as claimed in claim 4, wherein: the acid-resistant solution is a weak acid with pH value of 5.5-7.
9. The environment-friendly multi-element nano wear-resistant corrosion-resistant ceramic lining material as claimed in any one of claims 1 to 3, wherein: the binding agent is sulphoaluminate cement.
10. The environment-friendly multi-element nano wear-resistant corrosion-resistant ceramic lining material as claimed in any one of claims 1 to 3, wherein: the water reducing agent is SM high-efficiency water reducing agent or polyphosphoric acid type water reducing agent.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112851377A (en) * | 2021-01-23 | 2021-05-28 | 南京科技职业学院 | High-temperature structural ceramic material doped with polymer tubular fibers |
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