Attapulgite clay purification and modification process

An attapulgite clay and modification technology, applied in inorganic chemistry, silicon compounds, chemical instruments and methods, etc., can solve the problems of easy agglomeration, limited adsorption performance, etc., to increase pore volume and specific surface area, and increase pore channels. Volume and specific surface area, the effect of strong adsorption capacity

Inactive Publication Date: 2020-10-13
MINGGUANG FEIZHOU NEW MATERIAL
View PDF0 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the attapulgite clay raw material has a large amount of impurities in its composition structure and is prone to agglomeration, so its original adsorption performance is limited, so it is necessary to purify and modify the raw material

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
  • Attapulgite clay purification and modification process
  • Attapulgite clay purification and modification process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Step 1: Reclaiming pretreatment

[0035] Take attapulgite clay from Guanshan, Jianxi Town, Mingguang City (hereinafter referred to as attapulgite), spread it flat on the site and dry it for at least 3 days (excluding rainy and snowy days), and then roll, crush, and Magnetic separation, sieving (vibration sieving), and powder grinding (ball milling) to a particle size below 1 mm for later use.

[0036] Step 2: First-level high-temperature roasting activation treatment

[0037] Put the attapulgite obtained in step 1 in a muffle furnace, and perform gradient roasting treatment at 120±5°C, 150±5°C, 180±5°C, 210±5°C, and 240±5°C for 25 minutes and 30 minutes respectively , 40min, 50min, 60min, air-cooled with the furnace after roasting;

[0038] Step 3: Pulp milling + primary acid treatment

[0039] Add water to the attapulgite obtained in step 2 to prepare a slurry with a concentration of 32.5wt%, and add a nitric acid solution with a concentration of 2.5mol / L to mix, wh...

Embodiment 2

[0052] Step 1: Reclaiming pretreatment

[0053] Take attapulgite clay from Guanshan, Jianxi Town, Mingguang City (hereinafter referred to as attapulgite), spread it flat on the site and dry it for at least 3 days (excluding rainy and snowy days), and then roll, crush, and Magnetic separation, sieving (vibration sieving), and powder grinding (ball milling) to a particle size below 1 mm for later use.

[0054] Step 2: First-level high-temperature roasting activation treatment

[0055] Put the attapulgite obtained in step 1 in a muffle furnace, and perform gradient roasting treatment at 120±5°C, 150±5°C, 180±5°C, 210±5°C, and 240±5°C for 25 minutes and 30 minutes respectively , 40min, 50min, 60min, air-cooled with the furnace after roasting;

[0056] Step 3: Pulp milling + primary acid treatment

[0057] Add water to the attapulgite obtained in step 2 to prepare a slurry with a concentration of 34.5wt%, and add a nitric acid solution with a concentration of 3.0mol / L to mix, wh...

Embodiment 3

[0070] Step 1: Reclaiming pretreatment

[0071] Take attapulgite clay from Guanshan, Jianxi Town, Mingguang City (hereinafter referred to as attapulgite), spread it flat on the site and dry it for at least 3 days (excluding rainy and snowy days), and then roll, crush, and Magnetic separation, sieving (vibration sieving), and powder grinding (ball milling) to a particle size below 1 mm for later use.

[0072] Step 2: First-level high-temperature roasting activation treatment

[0073] Put the attapulgite obtained in step 1 in a muffle furnace, and perform gradient roasting treatment at 120±5°C, 150±5°C, 180±5°C, 210±5°C, and 240±5°C for 25 minutes and 30 minutes respectively , 40min, 50min, 60min, air-cooled with the furnace after roasting;

[0074] Step 3: Pulp milling + primary acid treatment

[0075] Add water to the attapulgite obtained in step 2 to prepare a slurry with a concentration of 36.5wt%, and add a nitric acid solution with a concentration of 3.5mol / L to mix, wh...

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
specific surface areaaaaaaaaaaa
specific surface areaaaaaaaaaaa
specific surface areaaaaaaaaaaa
Login to view more

Abstract

The invention discloses an attapulgite clay purification and modification process, which relates to the technical field of attapulgite clay purification, and comprises the following steps of: 1, taking and pre-treating materials; 2, performing primary high-temperature gradient roasting activation treatment; 3, pulping, grinding and selecting, and carrying out primary acidizing treatment; 4, carrying out secondary high-temperature gradient calcination activation treatment; 5, carrying out secondary acidification treatment; and 6, carrying out surface active treatment. Compared with the prior art, the purification and modification process disclosed by the invention is more practical and efficient than previous ones, particularly, multiple modification methods are combined for the attapulgitein the local Mingguang city, so that the purity and the adsorption performance of the treated attapulgite clay are greatly improved, and particularly, the attapulgite clay product is applied to the field of adsorbents.

Description

technical field [0001] The invention relates to the technical field of attapulgite clay purification, in particular to an attapulgite clay purification and modification process. Background technique [0002] Attapulgite clay (ATP for short) refers to a clay mineral mainly composed of attapulgite (palygorskite), which belongs to the sepiolite group in mineralogy. Attapulgite rod crystal is a kind of natural one-dimensional inorganic nanomaterial with wide source of raw materials and low preparation cost. Since the inside of the single crystal is a channel structure, many parallel tunnel voids are naturally formed between the parallel nano single crystal fibers, so the volume of the voids in the micron-level attapulgite accounts for more than 30% of the total particle volume, and the interior has a huge specific area. Therefore, attapulgite is widely used in adsorbents, catalysts and carriers, drilling mud thickeners, binders, feed additives, etc. Attapulgite has a layered ch...

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 Applications(China)
IPC IPC(8): C01B33/40
CPCC01B33/40C01P2004/03C01P2006/12C01P2006/65C01P2006/80
Inventor 顾文宇吴佳蕾胡睿
Owner MINGGUANG FEIZHOU NEW MATERIAL
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap