Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Ceramic filter membrane prepared from red mud, and preparation method thereof

A ceramic filter membrane, red mud technology, applied in ceramic products, ceramic material production, chemical instruments and methods, etc., can solve the problems of high cost of ceramic filter membrane, high sintering temperature, high hardness of alumina, and achieve superior performance, The effect of cost reduction and great development prospects

Active Publication Date: 2020-12-04
SHANDONG UNIV OF TECH
View PDF10 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. The hardness of alumina or aluminum hydroxide is high. Although the powder of alumina or aluminum hydroxide is obtained after grinding, the powder particle size is relatively large.
The powder particle size of alumina or aluminum hydroxide is large. In the subsequent steps, the roundness of the formed alumina or aluminum hydroxide microspheres will be poor, and the pore size of the fired ceramic filter membrane is 30-50um, which is relatively large. Affect the filtration performance of ceramic filter membrane
[0004] 2. Low flexural strength of aluminum oxide or aluminum hydroxide makes it difficult to increase the strength of ceramic filter membranes
This also leads to ceramic filter membranes produced with alumina or aluminum hydroxide as raw materials are often damaged during production, transportation, and use, resulting in increased costs
[0005] 3. The cost of using alumina or aluminum hydroxide to prepare ceramic filter membranes is high
On the one hand, the price of the raw material alumina or aluminum hydroxide itself is high, resulting in high cost; on the other hand, the firing temperature required for firing ceramic filter membranes with alumina or aluminum hydroxide is high, resulting in high firing costs
Furthermore, the hardness of alumina is high, it is difficult to grind, and the cost of grinding slurry and spray granulation is high

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ceramic filter membrane prepared from red mud, and preparation method thereof
  • Ceramic filter membrane prepared from red mud, and preparation method thereof
  • Ceramic filter membrane prepared from red mud, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] 60 g of red mud was sand-milled to obtain 120 g of red mud slurry, and the solid content of the red mud slurry was 50 wt%. The red mud slurry was subjected to spray granulation, and a centrifugal spray granulator was used to obtain 45um red mud microspheres, and the obtained red mud microspheres were heat-treated in a heating furnace at 950°C for 45 minutes. Lightly burnt red mud microspheres, 7g of granite stone sawn mud, 5g of kaolin, 4g of PVA, and 1g of glycerin were mixed into plastic mud.

[0049] 60 g of red mud was sand-milled to obtain 180 g of red mud slurry, and the solid content of the red mud slurry was 30 wt%. The red mud slurry was subjected to spray granulation, and a centrifugal spray granulator was used to obtain 10um red mud microspheres, and the obtained red mud microspheres were heat-treated in a heating furnace at 950°C for 45 minutes. Mix lightly burned red mud microspheres, 7g of granite stone sawing mud, 5g of kaolin, and 0.1g of sodium polyacr...

Embodiment 2

[0052] 60 g of red mud was sand-milled to obtain 100 g of red mud slurry, and the solid content of the red mud slurry was 60 wt%. The red mud slurry was subjected to spray granulation, and a centrifugal spray granulator was used to obtain 60um red mud microspheres, and the obtained red mud microspheres were heat-treated in a heating furnace at 1000°C for 60 minutes. Lightly burnt red mud microspheres, 15g of granite stone saw mud, 12g of kaolin, 7g of PVB, and 2g of glycerin are kneaded into plastic clay.

[0053] 60 g of red mud was sand-milled to obtain 150 g of red mud slurry, and the solid content of the red mud slurry was 40 wt%. The red mud slurry is subjected to spray granulation, and a centrifugal spray granulator is used to obtain 20um red mud microspheres, and the obtained red mud microspheres are heat-treated in a heating furnace at 1000°C for 60 minutes. Mix lightly burned red mud microspheres, 15g of granite stone sawing mud, 12g of kaolin, and 0.5g of sodium pol...

Embodiment 3

[0056] 55 g of red mud was sand-milled to obtain 100 g of red mud slurry, and the solid content of the red mud slurry was 55 wt%. The red mud slurry was subjected to spray granulation, and a centrifugal spray granulator was used to obtain 50um red mud microspheres, and the obtained red mud microspheres were heat-treated in a heating furnace at 980°C for 50 minutes. Mix lightly burned red mud microspheres, 10g granite stone sawn mud, 10g Suzhou soil, 5g PVA, and 1.5g glycerin to form plastic clay.

[0057] 70 g of red mud was sand-milled to obtain 200 g of red mud slurry, and the solid content of the red mud slurry was 35 wt%. The red mud slurry was subjected to spray granulation, and a centrifugal spray granulator was used to obtain 15um red mud microspheres, and the obtained red mud microspheres were heat-treated in a heating furnace at 980°C for 50 minutes. Mix lightly burned red mud microspheres, 10g of granite stone sawing mud, 10g of kaolin, and 0.3g of sodium polyacryla...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Apertureaaaaaaaaaa
Bending strengthaaaaaaaaaa
Apertureaaaaaaaaaa
Login to View More

Abstract

The invention discloses a ceramic filter membrane prepared from red mud. The ceramic filter membrane comprises a matrix and a membrane layer, and the matrix is prepared from, by weight, 60-80 parts ofred mud microspheres, 7-15 parts of granite powder, 5-12 parts of plastic clay, 4-7 parts of a plasticizer and 1-2 parts of a lubricant; the membrane layer is prepared from, by weight, 60-80 parts ofthe red mud microspheres, 7-15 parts of the granite powder, 5-12 parts of the plastic clay and 0.1-0.5 part of a dispersing agent; the sphere diameter of the red mud microspheres in the matrix preparation raw material is 45-60 [mu]m; and the sphere diameter of the red mud microspheres in the raw materials for preparing the membrane layer is 10-20 [mu]m. The ceramic filter membrane can be producedin the invention, the pore diameter ranges from 70 nm to 100 nm, the bending strength ranges from 20 MPa to 30 MPa, and the pure water flux ranges from 25 m<3> / m<2>.d to 30 m<3> / m<2>.d.

Description

technical field [0001] The invention relates to a ceramic filter membrane, in particular to a ceramic filter membrane prepared from red mud and a preparation method thereof. Background technique [0002] In the current method for preparing ceramic filter membranes, the raw material is aluminum oxide or aluminum hydroxide. The process is to grind aluminum oxide or aluminum hydroxide, shape it, and fire it to obtain a ceramic filter membrane. However, due to the nature of alumina or aluminum hydroxide, it has high hardness and low bending strength. The following problems occur when this leads to the prepared ceramic filter membrane: [0003] 1. Aluminum oxide or aluminum hydroxide has high hardness. Although the powder of aluminum oxide or aluminum hydroxide is obtained after grinding, the powder particle size is relatively large. The powder particle size of alumina or aluminum hydroxide is large. In the subsequent steps, the roundness of the formed alumina or aluminum hydr...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C04B33/132C04B33/13C04B33/32C04B38/00B01D67/00B01D69/02B01D71/02
CPCC04B33/1322C04B33/1324C04B33/1305C04B33/32C04B35/6365C04B35/63416C04B35/6342C04B35/63424C04B38/0038B01D71/02B01D69/02B01D67/0039B01D2325/24C04B2235/3472C04B2235/656C04B2235/6567C04B2235/96C04B38/0054Y02P40/60
Inventor 乐红志李洪达朱建平孙海滨
Owner SHANDONG UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com