Preparation method of porous ceramic particle

A technology of porous ceramics and manufacturing methods, which is applied in the field of preparation of porous ceramic particles, can solve the problems of free design, unsatisfactory free-form building greening, low porosity of porous ceramics, and high requirements for raw material powders, so as to achieve preferential growth and development, The effect of good liquidity and low cost

Active Publication Date: 2019-03-22
SHENZHEN CUILU TECH GREENING ENG CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Grouting molding, injection molding, and dip molding require regular replacement of molds, accompanied by a large number of waste molds, low production efficiency, high cost, and pollute the environment
Although the production efficiency of powder pressing molding (dry pressing molding) is relatively high, the requirements for raw material powder are high (the fluidity must be relatively strong), and the porosity of the prepared porous ceramics is relatively low (water absorption and water retention are relatively low)
Moreover, these methods can only prepare porous ceramic blocks of fixed shape, which are not free-flowing like particles. When used in building greening, they need to be filled and stacked according to a fixed shape and a fixed container. For free design, free shape, free The building greening of the container cannot satisfy

Method used

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  • Preparation method of porous ceramic particle

Examples

Experimental program
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Effect test

Embodiment 1

[0033] A kind of preparation method of porous ceramic particles, its technological process is as follows figure 1 As shown, the detailed method steps are as follows:

[0034] (1) The main raw materials are pretreated. The pretreatment is drying and pulverization. In parts by mass, 30 parts of fly ash, 20 parts of construction waste, 25 parts of mine mud, 15 parts of clay, 10 parts of Potassium feldspar, 30 parts of coal powder, and 1 part of polyvinyl alcohol are dry mixed in a high-speed mixer for 3 minutes, after dry mixing, add 15 parts of water, and continue mixing for 5 minutes;

[0035] (2) After the wet mixing is completed, the wet material is added to the rotary granulator for granulation to obtain strip-shaped granules;

[0036] (3) Put the strip-shaped particles granulated in step (2) into a shot blasting machine, and pelletize under high-speed centrifugal force to obtain spherical particles, then put them into an oven, and bake at 100°C for 150 minutes;

[0037] (...

Embodiment 2

[0041] A preparation method of porous ceramic particles, the detailed method steps are as follows:

[0042] (1) The main raw materials are pretreated. The pretreatment is drying and pulverization. In parts by mass, 40 parts of fly ash, 30 parts of construction waste, 10 parts of clay, 10 parts of albite, 0.1 Dry mix 1 part of SiC, 10 parts of coal powder, 1 part of polyvinyl alcohol, and 4 parts of pregelatinized starch in a high-speed mixer for 60 minutes, add 20 parts of water after dry mixing, and continue mixing for 30 minutes;

[0043] (2) After the wet mixing is completed, the wet material is added to the rotary granulator for granulation to obtain strip-shaped granules;

[0044] (3) Put the strip-shaped particles granulated in step (2) into a shot blasting machine, and pelletize under high-speed centrifugal force to obtain spherical particles, then put them into an oven, and bake at 30°C for 240 minutes;

[0045] (4) firing the spherical particles dried in step (3) at ...

Embodiment 3

[0049] A preparation method of porous ceramic particles, the detailed method steps are as follows:

[0050] (1) The main raw materials are pretreated. The pretreatment is drying and pulverization. In terms of parts by mass, 100 parts of construction waste, 1 part of SiC, and 1 part of Fe 2 o 3 , 20 parts of coal powder, 18 parts of CaCO 3 , 2 parts of polyvinyl alcohol and 6 parts of pregelatinized starch were dry mixed in a high-speed mixer for 5 minutes, after dry mixing, 15 parts of water were added, and the mixture was continued for 10 minutes;

[0051] (2) After the wet mixing is completed, the wet material is added to the rotary granulator for granulation to obtain strip-shaped granules;

[0052] (3) Put the strip-shaped particles granulated in step (2) into a shot blasting machine, and pelletize under high-speed centrifugal force to obtain spherical particles, then put them into an oven, and bake at 200°C for 5 minutes;

[0053] (4) Spherical particles dried in step ...

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PUM

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Abstract

The invention provides a preparation method of a porous ceramic particle. The preparation method comprises the following steps of adopting pulverized fuel ash, construction waste, mine mud, clay and feldspar as main raw materials, adopting pulverized coal and the like as foaming agents, pretreating, mixing, pelleting, drying, and firing to obtain the porous ceramic particle. The porous ceramic particle prepared through the invention has the characteristics of high strength, long service life, low density, good liquidity, high water absorption, good nutrient preserving capability, high water-retaining property, good air permeability, easiness in controlling particle size, high in reusability, excellent in anti-hardening performance and the like; without the need of other soil, a matrix canbe directly applied to plant cultivation, can be widely applied to greening an outer wall, a roof, a square, a park, a desert and the like, and can be further widely applied to a soil conditioner, a fertilizer efficiency conditioner, an anti-hardening agent and the like. The preparation method of the porous ceramic particle provided by the invention is simple in process, high in production efficiency, low in cost, and suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to a method for preparing porous ceramic particles, in particular to a method for preparing porous ceramic particles with imitation soil structure. Background technique [0002] Plants play a very important role in the ecological environment. They can not only purify the air, replenish oxygen in the air, but also prevent dust and wind, reduce noise and sterilize, and slow down the greenhouse effect. With the acceleration of urbanization, land for greening (plant cultivation) is becoming more and more scarce, and the area of ​​cultivated land is also decreasing. Building greening (wall greening, roof greening, etc.) is imperative. Regarding building greening, such as the patent "roof greening system" (CN101368431A), "roof greening module" (CN207783670U), "a greening building device for building roof" (CN207892144U), "movable roof flower planting "Box" (CN1530444Y), "A simple reinforced water-retaining substrate for green roofs and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/00C04B33/13C04B33/132C04B33/135A01G24/10
CPCA01G24/10C04B33/131C04B33/132C04B33/1324C04B33/1352C04B35/63416C04B35/636C04B38/009C04B2235/3208C04B2235/3272C04B2235/3472C04B2235/3826C04B2235/422Y02P40/60
Inventor 李枫税安泽
Owner SHENZHEN CUILU TECH GREENING ENG CO LTD
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