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Red mudstone porous granular-ceramics filter material and method for preparing same

A technology of ceramsite filter material and red mudstone, which is applied in the manufacturing field of producing high-performance porous ceramsite filter material, can solve the problems of poor film-hanging performance of plastic fillers, large water flow resistance, easy aging, etc. The effect of less energy consumption and lower production cost

Inactive Publication Date: 2006-12-27
NANCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These fillers have defects to varying degrees, such as irregular fillers with high water flow resistance and easy to block; plastic fillers have poor film-hanging performance and are easy to age.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The chemical composition of the red mudstone used is shown in Table 2.

[0020] SiO 2

Al 2 o 3

Fe 2 o 3

CaO

MgO

K 2 o

Na 2 o

loss

63.16

18.70

5.87

0.97

0.41

2.33

0.35

7.26

[0021] The ratio of each raw material is: 55% of red mudstone, 40% of fly ash, 2% of glass powder, and 3% of limestone powder. Each raw material is ground separately and then measured and mixed into the plow mixer to mix evenly. In the granulator, cue balls of φ1-2mm are prepared first, and then the cue balls are rolled in the granulator to a size of φ3-6mm. The balls are fed into the double-stage double-turn rotary kiln for drying and calcination. Control the drying pre-calcination temperature to 300°C, the calcination temperature to 1150°C, the drying time to 15 minutes, and the calcination time to 20 minutes. After leaving the kiln, the ceramsite is naturally cooled to room temperature t...

Embodiment 2

[0024] The ratio of each raw material is: 60% of red mudstone, 37% of fly ash, and 3% of glass powder.

[0025] Each raw material is ground separately, weighed and mixed evenly to make a material ball of φ3-6mm, put the material ball into a corundum crucible, put it in a high-temperature furnace, dry and pre-fire at 500°C for 10 minutes, and then put it into a silicon carbide rod at high temperature Calcined in the furnace at 1050°C for 30 minutes, and cooled to room temperature after taking out the furnace.

Embodiment 3

[0027] The ratio of each raw material is: red mudstone 50%, fly ash 47%, glass powder 3%.

[0028] Each raw material is ground separately, weighed and mixed evenly to make a material ball of φ3-6mm, put the material ball into a corundum crucible, put it into a high-temperature furnace, dry and pre-fire at 450°C for 12 minutes, and then put a silicon carbide rod at high temperature Calcined in the furnace at 1180°C for 10 minutes, and cooled to room temperature after taking out the furnace.

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PUM

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Abstract

Light spherical ceramsite filter materials and their preparation method characterized in that red mudstone and fly ash is used as main materials, slight pore-forming agent is doped therein, wherein red mudstone in 40-70% by weight, fly ash in 28-55% by weight, and pore-forming agent in 1-5% by weight, and the products are given by grinding, mixing, palletizing to forming spherical particles with 3-10mm diameter and by dry prebraking for 10-20 min at a temperature of 300-500 DEG C., and by calcining for 10-30 min at a temperature of 1050-1180 DEG C. The products can be provided with evenly porousness, and by simply process.

Description

technical field [0001] The invention belongs to the technical field of wastewater purification treatment and environmental materials, and relates to the development and utilization of long-term idle red mudstone resources and a manufacturing method for producing high-performance porous ceramsite filter material in combination with industrial waste residue. Background technique [0002] For a long time, the filter fillers in my country's sewage treatment process mainly use irregular fillers such as sand, gravel, coke, slag, anthracite, and plastic honeycomb fillers, corrugated fillers and fiber fillers. These fillers have defects to varying degrees, such as irregular fillers with high water flow resistance and easy to block; plastic fillers have poor film-hanging performance and are easy to age. The biological aerated filter sewage treatment process that emerged in the late 1980s has been widely used in foreign developed countries. In the middle and late 1990s, my country beg...

Claims

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Application Information

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IPC IPC(8): B01D39/06C04B38/00
Inventor 黄少文徐玉华张思宇
Owner NANCHANG UNIV
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