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

Production process of organic composite bentonite for metallurgical pellet production

A production process and technology of bentonite, applied in the field of non-metallic mineral materials, can solve the problems of large amount of bentonite, increase of slag amount under the furnace, energy consumption of metallurgical smelting, and reduction of metallurgical pellet grade, so as to achieve smooth surface and reduce under-furnace The effect of reducing the amount of slag and reducing energy consumption in smelting

Pending Publication Date: 2021-05-14
湖南飞来峰非金属矿物材料有限公司
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In metallurgical smelting or other enterprises that require powder pelletizing, metallurgical powder needs to be added with a binder to pelletize. At present, bentonite is used as a binder at home and abroad. However, adding too much non-metallic mineral bentonite will reduce the metallurgical ball. increase the amount of slag under the furnace and the overall energy consumption of metallurgical smelting; the amount of bentonite used in the production of domestic metallurgical powder pellets is too large, and its average amount is calculated at about 2.5-4% by weight, which is lower than that of foreign countries. Compared with the level of 1%, there is an obvious gap; how can we not only reduce the amount of bentonite added, but also meet the various performance requirements of iron powder and other metallurgical pellets, and develop a method for the production of metallurgical pellets. Organic composite bentonite, the metallurgical pellets prepared can meet the requirements of drop strength, compressive strength and burst temperature of metallurgical pellets

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
  • Production process of organic composite bentonite for metallurgical pellet production

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: The raw material is the finished sodium bentonite purchased.

[0024] Put a certain amount of sodium bentonite in a mixer, add (weight percentage) 1% organic bonding powder and stir thoroughly to prepare organic composite bentonite for metallurgical pellet production.

[0025] The organic composite bentonite and water used in the production of metallurgical pellets are adjusted to the organic composite bentonite slurry at a concentration of (weight percentage) 15%, and then the slurry is evenly sprayed on the rotating pelletizing disc by a slurry pump through the nozzle of the slurry pipe. Balling on metallurgical powder.

[0026] The metallurgical pellets prepared by this scheme can meet the application requirements in terms of drop strength, compressive strength and burst temperature.

Embodiment 2

[0027] Embodiment 2: The raw material is purchased finished sodium bentonite.

[0028] A certain amount of sodium bentonite is put in a mixer, and 1.5% organic bonding powder is added (weight percentage) for full stirring to obtain an organic composite bentonite for metallurgical pellet production.

[0029] The organic composite bentonite and water used in the production of metallurgical pellets are adjusted to the organic composite bentonite slurry at a concentration of (weight percentage) 10%, and then the slurry is evenly sprayed on the rotating pelletizing disc by a slurry pump through the nozzle of the slurry tube. The metallurgical powder is pelletized, and the obtained metallurgical pellets will not affect the next step of preheating, drying and other processes.

[0030] The parameters of drop strength, compressive strength and bursting temperature of the metallurgical pellets prepared by the scheme of Example 2 are all improved.

Embodiment 3

[0031] Embodiment 3: Get the raw ore calcium-based bentonite to dry in the sun or dehydrate with a dryer, then enter the Raymond mill for grinding, add 2.5-3.5% of soda ash, 0.8% of carboxymethyl starch sodium (CMS-Na), polyacrylamide (PAM) 0.2%, mixed and ground, and the 200-mesh fine powder obtained by winnowing is the organic composite bentonite used in the production of metallurgical pellets.

[0032] The organic composite bentonite and water used in the production of metallurgical pellets are adjusted to the organic composite bentonite slurry at a concentration of 10-15% by weight, and then the slurry is evenly sprayed on the rotating pelletizing disc by a slurry pump through the nozzle of the slurry pipe. Balling on metallurgical powder.

[0033] The parameters of drop strength, compressive strength and burst temperature of the metallurgical pellets prepared according to the scheme of Example 3 are all further improved.

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

No PUM Login to View More

Abstract

The invention relates to a production process of organic composite bentonite for metallurgical pellet production. The production process is characterized by comprising the following steps that firstly, sodium modification is conducted on calcium bentonite to obtain a finished product sodium bentonite; a certain amount of organic bonding powder is added into the sodium bentonite to prepare organic composite pellet bentonite; sodium carboxymethyl starch (CMS-Na) and polyacrylamide (PAM) are sufficiently and evenly stirred in a stirrer to prepare organic bonding powder; the sodium carboxymethyl starch (CMS-Na) is organic matter and is a water-soluble anionic high-molecular compound; the polyacrylamide is PAM in short and is the high-molecular-weight sodium bentonite easily dissolved in water, and the sodium bentonite and the organic bonding powder are sufficiently mixed to prepare the organic compound bentonite; when metallurgical pellets are produced, the organic composite bentonite is prepared into slurry according to the certain concentration, and then the slurry is sprayed on metallurgical powder in a pelletizing disc of a rotating pelletizer by using a slurry pump for pelletizing; and the combustion of the organic matter has no influence on the quality of metallurgical products and does not pollute the environment.

Description

technical field [0001] The invention discloses an organic composite bentonite production process for the production of metallurgical pellets, belonging to the technical field of non-metallic mineral materials. Background technique [0002] In metallurgical smelting or other enterprises that require powder pelletizing, metallurgical powder needs to be added with a binder to pelletize. At present, bentonite is used as a binder at home and abroad. However, adding too much non-metallic mineral bentonite will reduce the metallurgical ball. increase the amount of slag under the furnace and the overall energy consumption of metallurgical smelting; the amount of bentonite used in the production of domestic metallurgical powder pellets is too large, and its average amount is calculated at about 2.5-4% by weight, which is lower than that of foreign countries. Compared with the level of 1%, there is an obvious gap; how can we not only reduce the amount of bentonite added, but also meet...

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): C22B1/243C22B1/244
CPCC22B1/243C22B1/244
Inventor 黄生乔黄剑云杨波
Owner 湖南飞来峰非金属矿物材料有限公司
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