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

A dry method for preparing modified bentonite

A bentonite and modification technology, applied in the field of dry preparation of modified bentonite, can solve problems such as poor ion adsorption and exchange capacity, and achieve the effects of increasing adsorption capacity and ion exchange capacity, short process flow, and stable material performance.

Active Publication Date: 2021-10-26
FUJIAN UNIV OF TECH
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the dry modification operation, the contact between bentonite and the modifier is not as sufficient as the wet modification operation, and its ion adsorption and exchange capacity is relatively poor.

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
  • A dry method for preparing modified bentonite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0028] Step 1: Bentonite raw material preparation. The mined raw materials are simply manually selected, stones, sticks and other mechanical impurities are removed, crushed by jaw crushers and ball mills, with a particle size of 100 mesh to 200 mesh, and bentonite raw material A is obtained.

[0029] Step 2: Inorganic modifier preparation. (1) Sodium-based modifier. Industrial sodium carbonate or sodium bicarbonate is added according to mass percentage wt 0.1% to 10%. (2) aluminum pillar propping agent aluminum chlorohydrate [containing polyaluminium, Al 2 (OH)nCl 6-n ]. According to the mass percentage of 0.1% to 10%. (3) Magnetic material iron ore powder. Iron ore powder (100-200 mesh) with a TFe content of not less than 50% is added at a mass percentage of 0.5% to 10%. (4) Quartz sand (100-200 mesh). The mass percentage is 0.5% to 5%. (5) Zeolite (100-200 mesh). The mass percentage is 0.5% to 5%. (6) Nano photocatalyst TiO 2 (Application patent application numbe...

Embodiment approach 2

[0038] Step 1: Bentonite raw material preparation. The mined raw materials are simply manually selected, stones and other mechanical impurities are removed, crushed by jaw crushers and ball mills, with a particle size of 100 mesh to 200 mesh, and bentonite raw material A is obtained.

[0039] Step 2: Inorganic modifier preparation. (1) Sodium-based modifier. Sodium carbonate + sodium bicarbonate (1:1 ratio), added according to the mass percentage wt 0.1% ~ 10%. (2) Aluminum pillar proppant. Aluminum carbonate + aluminum chloride hydrate (1:2 ratio). According to the mass percentage of 0.1% to 10%. (3) Magnetic material iron ore powder. Add iron ore powder (100-200 mesh) with TFe content not less than 50% according to the mass percentage of 0.5%-10%. (4) Quartz sand (no more than 100 mesh). The mass percentage is 0.5% to 5%. (5) Zeolite (100-200 mesh). The mass percentage is 0.5% to 5%. (6) Nano photocatalyst TiO 2 (Application patent application number is 2009101110...

Embodiment approach 3

[0048] Step 1: Bentonite raw material preparation. The mined raw materials are simply manually selected, stones and other mechanical impurities are removed, crushed by jaw crushers and ball mills, with a particle size of 100 mesh to 200 mesh, and bentonite raw material A is obtained.

[0049] Step 2: Inorganic modifier preparation. (1) Sodium-based modifier. The industrial sodium-based modifier sodium carbonate + sodium bicarbonate + sodium sulfate (1:1:1 ratio) is added according to the mass percentage wt of 0.1% to 10%. (2) Aluminum proppant (1:1:1 ratio). According to the mass percentage of 0.1% to 10%. (3) Magnetic material iron ore powder. Add iron ore powder (100-200 mesh) with TFe content not less than 50% according to the mass percentage of 0.5%-10%. (4) Quartz sand (no more than 100 mesh). The mass percentage is 0.5% to 5%. (5) Zeolite (100-200 mesh). The mass percentage is 0.5% to 5%. (6) Nano photocatalyst TiO 2 (Application patent application number is 20...

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
particle size (mesh)aaaaaaaaaa
particle sizeaaaaaaaaaa
sizeaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of preparation of environmental protection materials, and in particular relates to a dry method for preparing modified bentonite. Sorting the dried bentonite raw material A to remove impurities, then pulverizing and sieving, adding an inorganic modifier and mixing thoroughly to obtain material B; adding an organic modifier and fully stirring to obtain material C. Pressing in the grinding tool, sintering, forming, and cooling to obtain the finished product. During sintering, a gas booster pump is used to perform several pressurization-decompression operations. The invention has the advantages of short technological process, high production efficiency, easy-to-obtain raw materials, low cost, simple operation and stable material performance. The finished product itself is non-toxic, harmless, and environmentally friendly. It is suitable for the disposal of heavy metal pollutants in water and soil and solid waste to achieve the goal of environmental protection.

Description

technical field [0001] The invention belongs to the technical field of preparation of environmental protection materials, and in particular relates to a dry method for preparing modified bentonite. Background technique [0002] Bentonite is a natural mineral with montmorillonite as the main component. It has a large specific surface area and has certain adsorption properties. It is also rich in domestic mineral resources and low in price. There are magnesium, potassium, sodium, copper and other cations in the layered structure formed by the montmorillonite unit cell, and the interaction between these cations and the montmorillonite unit cell is not strong, and it is easily replaced by other cations, so it has good ion exchange performance. Bentonite has strong hygroscopicity and can absorb water less than 20 times its own volume and expand to more than 30 times. In water medium, it can be dispersed into a colloidal suspension with certain lubricity, thixotropy and viscosit...

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
Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/12B01J20/30C02F1/28C02F1/42C02F1/72C02F101/20C02F101/30
CPCB01J20/12B01J20/3064C02F1/288C02F1/42C02F1/725C02F2101/20C02F2101/30C02F2305/10
Inventor 李静玲刘学平余根鼎陈友根陈荣国林恬彭蕾倪柳芳
Owner FUJIAN 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