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Method for preparing ceramic water permeable brick by virtue of granulation process

A permeable brick and granulation technology, applied in ceramic products, manufacturing tools, ceramic molding machines, etc., can solve problems such as difficulty in absorbing stagnant water, increasing surface runoff, and going deep into the ground, achieving broad application prospects, controllable quality, Significant economical effect

Inactive Publication Date: 2017-09-08
UNIV OF SCI & TECH BEIJING
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

On the other hand, since the surface of the city is mostly covered with impermeable concrete and asphalt, it is difficult to absorb the accumulated water on the surface, and the rainwater cannot penetrate directly from the surface into the ground, which increases surface runoff, resulting in a large amount of accumulated water and traffic jams

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  • Method for preparing ceramic water permeable brick by virtue of granulation process

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[0035] Such as figure 1 As shown, an embodiment of the present invention adopts a method for preparing ceramic permeable bricks using a granulation process, and the method for preparing ceramic permeable bricks using a granulation process includes:

[0036] Step 101: Powder the brick-making raw materials to obtain brick-making powder.

[0037] Among them, the brick-making raw materials include: clay, clay, clay, red mud, boron mud, steel slag, nickel slag, copper slag, fly ash, high silica rock, tailings, tailings, refining slag, water quenching slag, waste ceramics At least two kinds of bricks, waste sintered bricks and tiles, coal gangue, blast furnace slag, ferroalloy slag, and metallurgical dust.

[0038] Step 102: Granulating the brick-making powder to obtain brick-making particles with a narrow particle size distribution. The particle size of the brick-making particles with a narrow particle size distribution is similar, and the average particle size is 0.2mm-8mm. The ...

Embodiment 1

[0064] Ingredients are formulated according to the performance requirements of the formula. The mass percentage ratio of each component is: steel slag 10%, clay 1 90%, and the particles are directly sieved to form particles with similar particle sizes. The particle size is 2.0-2.8mm, the smallest particle size The ratio of diameter to maximum particle diameter is 0.71. Then put these particles with similar particle size into the mold, further molding, drying and sintering. The molding pressure is 0.5MPa, and the sintering temperature is 1120°C. After firing, the measured compressive strength of the permeable brick is 46.2MPa, and the flexural strength is 8.3MPa. The water permeability coefficient is greater than 0.092cm / s.

Embodiment 2

[0066] Ingredients are formulated according to the performance requirements of the formula. The mass percentage ratio of each component is: red mud 10%, clay 2 90%, ball milling and crushing to form powder, and further granulation. During the granulation process, the powder and mass fraction are 1%. Mix ceramic additives to form granulated particles with similar particle size, the particle size is 1.65-2.79mm, and the ratio of the smallest particle size to the largest particle size is 0.59; then these particles with similar particle size are put into the mold for further molding , drying and sintering, the molding pressure is 0.5MPa, and the sintering temperature is 1110°C; the compressive strength of the permeable brick measured after firing is 48.2MPa, the flexural strength is 8.5MPa, and the water permeability coefficient is greater than 0.061cm / s.

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Abstract

The invention provides a method for preparing a ceramic water permeable brick by virtue of a granulation process. The method comprises the following steps: pulverizing brick-making raw materials into brick-making powder; granulating the brick-making powder so as to obtain brick-making particles with similar particle sizes, wherein the ratio of the minimum particle size to the maximum particle size of the brick-making particles is 0.5 to 1; and forming a green body by virtue of the brick-making particles, and carrying out processes of ceramic sintering brick drying, sintering and the like on the green body, so as to obtain the ceramic water permeable brick. According to the method, a preparation process of the ceramic water permeable brick can be greatly simplified, the quality in the preparation process is relatively controllable, and the range of the raw materials of the water permeable brick is greatly extended to various waste, inferior raw mineral materials and the like; and the method has remarkable economic, environment-friendly and social benefits and wide application prospects.

Description

technical field [0001] The invention relates to the field of preparation of new materials, in particular to a method for preparing ceramic permeable bricks using a granulation process. Background technique [0002] In recent years, with the intensification of the global warming trend, the urban heat island effect is obvious. The hardening of the ground surface causes 90% of rainwater to enter the urban drainage system. Once a heavy rain hits, it will cause urban waterlogging. On the other hand, since the urban surface is mostly covered with impermeable concrete and asphalt, it is difficult to absorb the accumulated water on the surface, and the rainwater cannot penetrate directly from the surface into the ground, which increases surface runoff, resulting in a large amount of accumulated water and traffic jams. With the acceleration of urbanization in developing countries, a large number of people migrate to big cities, which also brings serious noise pollution to cities. C...

Claims

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Application Information

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IPC IPC(8): C04B38/00C04B33/138C04B33/132C04B33/13B28B3/00B28B11/24
CPCB28B3/00B28B11/243C04B33/13C04B33/1322C04B33/138C04B38/0041C04B2235/96Y02P40/60
Inventor 李宇王耀忠
Owner UNIV OF SCI & TECH BEIJING
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