Preparation method of large-size shell sand
By creating irregular decorative patterns on the surface of large-sized shell sand and treating it with the decaying water from pickled vegetables, the problems of lack of decorative patterns and organic residue on the surface of shell sand were solved, improving the aesthetics and smoothness of the shell sand and reducing its density so that it can float on the concrete surface.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- JIANGXI LUKE NEW BUILDING MATERIALS CO LTD
- Filing Date
- 2024-01-16
- Publication Date
- 2026-04-14
AI Technical Summary
In existing technologies, large-sized shell sand lacks decorative patterns in surface decoration, affecting aesthetics, and residual organic matter and black film on the shell surface affect smoothness.
Irregular decorative patterns are formed on the surface of large-sized shell sand through cold impact treatment, and organic matter and black film are removed by fermentation of pickled vegetable putrefaction water. Combined with coupling aqueous solution, the density is reduced so that it can float on the concrete surface.
It improves the aesthetics and smoothness of large-sized shell sand, while reducing its density, making it more decorative and absorbent in decorative materials.
Smart Images
Figure BDA0004667111550000031
Abstract
Description
Technical Field
[0001] This invention relates to the field of building materials, and more particularly to a method for preparing large-sized shell sand. Background Technology
[0002] In southern regions, especially in areas with lakes and other bodies of water where shellfish are farmed, a large number of waste shells are generated every year. These accumulated shells produce a strong fishy odor, decompose slowly, and occupy a significant amount of land. Therefore, research has been conducted on collecting and grinding these waste shells to produce shell sand.
[0003] Shell sand, due to its hardness, purity, and high reflectivity, possesses a high-gloss aesthetic when used in decorative materials. Furthermore, its natural porous structure helps absorb formaldehyde and other pollutants.
[0004] Currently, shell sand is mainly divided into large-size shell sand and small-size shell sand. The main function of large-size shell sand is to expose it on the surface and form irregular filling patterns. In existing technology, large-size shell sand is obtained by grinding and does not have decorative patterns. Therefore, our company has developed large-size shell sand with decorative patterns on the surface. Summary of the Invention
[0005] This invention discloses a method for preparing large-sized shell sand. After grinding, the large-sized shell sand is subjected to cold impact to produce irregular decorative patterns on its surface, thereby enhancing the aesthetic appeal of the large-sized shell sand in surface decoration.
[0006] A method for preparing large-sized seashell sand, the specific preparation method is as follows:
[0007] (1) Collect seashells and grind them into large, irregular shapes to obtain preliminary large-sized seashell sand;
[0008] (2) Pour the initial large-sized shell sand into a sealed jar, collect the putrefied water obtained from pickling vegetables, submerge and seal for fermentation for 3-5 days;
[0009] (3) After fermentation, drain the putrid water, wash with pure water 1-2 times, then heat with high temperature water steam at 220℃-250℃ until the temperature inside the sealed container reaches 200℃, and keep warm for 10-20 minutes.
[0010] (4) Take room temperature water and quickly pour it into a sealed container;
[0011] (5) After draining the water, heat and dry to obtain large-sized shell sand with irregular decorative patterns on the surface.
[0012] Furthermore, the putrid water drained in step (3) can be reused in step (2).
[0013] Furthermore, in step (4), a coupling aqueous solution is used instead of room temperature water. The preparation method of the coupling aqueous solution is as follows:
[0014] Take 1-1.5 times the mass of the initially prepared large-sized shell sand and room temperature water, add 3%-5% of the water mass of silane coupling agent, stir and disperse, then add 15%-25% of the water mass of hollow glass microspheres, disperse and obtain a coupling aqueous solution.
[0015] Furthermore, the silane coupling agent is A-172.
[0016] Furthermore, when adding the aforementioned large-sized shell sand to concrete, heavy concrete should be selected, and heavy concrete should have good fluidity with a slump ≥160mm.
[0017] Advantages of this invention:
[0018] 1. This invention uses acidic protein-decomposing bacteria in the putrid water obtained from pickling vegetables to decompose the organic matter remaining on the shells and the black film on the back of the shells, thereby improving the smoothness of large-sized shell sand.
[0019] 2. By using cold impact after grinding, irregular decorative patterns are created on the surface of large-sized shell sand, enhancing the aesthetic appeal of large-sized shell sand in surface decoration.
[0020] 3. By replacing room temperature water with a coupling aqueous solution, large-sized shell sand is coupled with hollow glass microspheres, reducing the density of the large-sized shell sand so that it can float on the surface of mortar or concrete. Detailed Implementation
[0021] Example 1
[0022] A method for preparing large-sized seashell sand, the specific preparation method is as follows:
[0023] (1) Collect seashells and grind them into large, irregular shapes to obtain preliminary large-sized seashell sand;
[0024] (2) Pour the initial large-sized shell sand into a sealed jar, collect the putrefied water obtained from pickling vegetables, submerge and seal for 3 days to ferment.
[0025] (3) After fermentation, drain the putrid water, wash it once with pure water, and then heat it with high-temperature steam at 220°C until the temperature inside the sealed container reaches 200°C. Keep it warm for 15 minutes.
[0026] (4) Take room temperature water and quickly pour it into a sealed container;
[0027] (5) After draining the water, heat and dry to obtain large-sized shell sand with irregular decorative patterns on the surface.
[0028] The density of the obtained large-sized seashell sand was measured to be 2.79 g / cm³. 3 Compared to unfermented large-sized shell sand, the processed large-sized shell sand has no residual black film or black spots and is pure white. Unfermented large-sized shell sand, on the other hand, has a black back, which is extremely detrimental to enhancing the aesthetic appearance of decorative materials.
[0029] Example 2
[0030] In step (4), a coupled aqueous solution is used instead of room temperature water, and the rest of the process is the same as in Example 1.
[0031] The preparation method of the coupled aqueous solution is as follows:
[0032] Take 1.5 times the mass of the initially prepared large-sized shell sand and room temperature water, add 4% by mass of water silane coupling agent A-172, stir and disperse, then add 20% by mass of water hollow glass microspheres, disperse and obtain a coupling aqueous solution.
[0033] The density of the obtained large-sized shell sand was tested to be 2.30 g / cm³. 3 .
[0034] Take heavy concrete (2.75g / cm³) 3 ) and lightweight concrete (1.81g / cm 3 The slump was adjusted to 200mm±10mm. Large-sized shell sand prepared in the above embodiment was added according to the mass ratio. Then, it was coated with a thickness of 0.5cm. When 50% of the surface area was filled with irregular patterns of large-sized shell sand after coating, the amount of large-sized shell sand added (%) was recorded.
[0035]
[0036] The aforementioned coupled aqueous solution can also be used to prepare small-sized shell sand. The resulting small-sized shell sand easily floats on the surface, further enhancing the gloss of decorative materials. Moreover, regardless of whether the shell sand is large or small, when it is concentrated on the surface or in the shallow layer, it helps to improve the adsorption effect on formaldehyde.
[0037] In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A method for preparing large-sized seashell sand, characterized in that: The specific preparation method is as follows: (1) Collect seashells and grind them into large, irregular shapes to obtain preliminary large-sized seashell sand; (2) Pour the initial large-sized shell sand into a sealed jar, collect the putrefied water obtained from pickling vegetables, submerge and seal for fermentation for 3-5 days; (3) After fermentation, drain the putrid water, wash with pure water 1-2 times, then heat with high temperature water steam at 220℃-250℃ until the temperature inside the sealed container reaches 200℃, and keep warm for 10-20 minutes. (4) Take the coupling aqueous solution and quickly pour it into a sealed container; The preparation method of the coupled aqueous solution is as follows: Take 1-1.5 times the mass of the initially prepared large-sized shell sand and room temperature water, add 3%-5% of the water mass of silane coupling agent, stir and disperse, then add 15%-25% of the water mass of hollow glass microspheres, disperse and obtain a coupling aqueous solution. (5) After draining the water, heat and dry to obtain large-sized shell sand with irregular decorative patterns on the surface.
2. The method for preparing large-size seashell sand according to claim 1, characterized in that: The putrid water drained in step (3) is reused in step (2).
3. The method for preparing large-sized seashell sand according to claim 1, characterized in that: The silane coupling agent is A-172.
Citation Information
Patent Citations
Cement mortar containing shell and its product
JP1997165252A
Apparatus for separating and extracting shell-meat extract, shell-meat, and shell
JP2004351307A