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

Low burn-up pellet adhesives and preparation method thereof

A binder and fuel consumption technology, applied in the field of low fuel consumption pellet binder and its preparation, can solve the difficulty in meeting the requirements of iron ore raw material moisture and pelletizing moisture, increase blast furnace ironmaking smelting fuel consumption, reduce Iron grade of pellets and other issues, to reduce investment costs and energy consumption in the drying process, increase the appropriate upper limit, and improve the quality of pellets

Pending Publication Date: 2018-06-12
陕西臻焱节能环保科技有限公司
View PDF5 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above technical problems, the present invention provides a low-burn-up pellet binder and a preparation method thereof, so as to solve the problem of high burnout rate of traditional bentonite binder, reduce iron grade of pellet ore, increase blast furnace iron-making smelting fuel consumption, and It is difficult to adapt to the requirements of iron ore raw material moisture and ball moisture

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
  • Low burn-up pellet adhesives and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: A kind of pellet binder with low burn-up

[0026] The raw materials in the low-burn-up pellet binder were mixed according to the parts by mass described in Table 1 to obtain three groups of low-burn-up pellet binders I to III with different mixing ratios.

[0027] Table 1 Low-burn-up pellet binders with different mixing ratios (parts by mass)

[0028]

Embodiment 2

[0029] Example 2: Preparation of low burn-up pellet binder

[0030] Step 1. Preparation of sodium bentonite: Dissolving sodium alginate and sodium carbonate in water and stirring evenly to obtain a compound sodium modified solution; then adding the compound sodium modified solution to the ground natural calcium-based bentonite , the grinding particle size of the calcium-based bentonite is less than 0.5mm, mixed evenly to obtain a mixed slurry; adding dimethyl dioctadecyl ammonium chloride to the resulting mixed slurry, adjusting the pH value to 5-7, and then heating up to 70 -100°C, at this temperature, vinyl alcohol is added while stirring, and the reaction is stirred for 2-4 hours. After the reaction is completed, the reaction product is sequentially dried, crushed and ground to obtain the sodium bentonite; wherein, sodium alginate, The mass ratio of sodium carbonate to calcium-based bentonite is 3:1:100.

[0031] Preparation of modified antiknock agent: put polyacrylamide ...

Embodiment 3

[0037] Example 3: Preparation of low burn-up pellet binder

[0038] Step 1. Preparation of sodium bentonite: Dissolving sodium alginate and sodium carbonate in water and stirring evenly to obtain a compound sodium modified solution; then adding the compound sodium modified solution to the ground natural calcium-based bentonite , the grinding particle size of the calcium-based bentonite is less than 0.5mm, mixed evenly to obtain a mixed slurry; adding dimethyl dioctadecyl ammonium chloride to the resulting mixed slurry, adjusting the pH value to 5-7, and then heating up to 70 -100°C, at this temperature, vinyl alcohol is added while stirring, and the reaction is stirred for 2-4 hours. After the reaction is completed, the reaction product is sequentially dried, crushed and ground to obtain the sodium bentonite; wherein, sodium alginate, The mass ratio of sodium carbonate to calcium-based bentonite is 25:8:100.

[0039] Preparation of modified antiknock agent: put polyacrylamide...

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 sizeaaaaaaaaaa
burst temperatureaaaaaaaaaa
burst temperatureaaaaaaaaaa
Login to View More

Abstract

The invention discloses low burn-up pellet adhesives and a preparation method thereof. The low burn-up pellet adhesives are formed by mixing Na-bentonite, modified antidetonant, a complex carbon reducer, natural starch, cellulose macromolecules and a thickening agent. Compared with the prior art, the low burn-up pellet adhesives are advantageous in that the components are scientifically selected and reasonably proportioned, the quality of pellets is improved, the cracking temperature of green pellets is improved, the blast furnace ironmaking smelting burn-up is lowered, return mines are obviously reduced, the reduction rate is improved, the coking iron ratio is greatly lowered, the yield is improved, and the finished product pellets are high in pressure resistance. The pressure resistanceof balls and the finished product pellets is improved, the total iron grade of finished product pellet mines is improved by 1.5% or above, and the remarkable economical benefits of saving energy and increasing yield are achieved.

Description

technical field [0001] The invention relates to the technical field of pretreatment of iron ore powder, iron-containing dust and sludge, in particular to a pellet binder with low fuel consumption and a preparation method thereof. Background technique [0002] China's steel output has maintained rapid growth for many years and has become a major steel country in the world. The accompanying environmental protection issues are also becoming more and more prominent. The pollution of industrial waste produced by my country's iron and steel enterprises has increasingly seriously affected the surrounding environment, and has begun to restrict the development of the enterprises themselves. Therefore, the elimination of industrial waste pollution, the realization of clean production, especially the treatment of industrial waste such as various dusts produced in various production processes are important indicators for the sustainable and healthy development of my country's iron and s...

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): C22B1/242
CPCC22B1/242
Inventor 严礼祥
Owner 陕西臻焱节能环保科技有限公司
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