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

Superfine slag powder prepared by doping steel slag into mineral slag

A technology for slag micropowder and slag preparation, which is applied in the production of slag micropowder, improves the activity index of slag micropowder and reduces the cost of production materials, can solve the problems of low activity, less application of steel slag, and is not easy to grind, and achieves the effect of reducing manufacturing costs.

Inactive Publication Date: 2014-04-30
李喜才
View PDF0 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Steel slag is the waste slag produced in the steelmaking process. Steel slag is an inert material and is not easy to grind. At present, the utilization rate of steel slag is about 22%, which is low.
Due to low activity and high preparation cost, the popularization and application of steel slag powder is restricted.
[0003] At present, there are very few applications of steel slag at home and abroad, and there is no technical report on the production of slag powder by mixing steel slag with slag

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
  • Superfine slag powder prepared by doping steel slag into mineral slag

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] The average price of slag is about 70 yuan per ton, and the freight price of steel slag is about 10 yuan per ton. If other factors are not considered, the cost of manufacturing 1 ton of slag powder is 70 yuan.

[0015] Using the patented technology of the present invention, the cost of making 1 ton of slag micropowder material is:

[0016] 70 yuan / ton×70%+10 yuan / ton×30%=49 yuan / ton+3 yuan / ton=51 yuan / ton.

[0017] Utilizing the invention patent: the production of 1 ton of slag powder can reduce the material cost by 19 yuan / ton.

[0018] See Schedule

[0019] Experimental comparison of slag mixed with steel slag and no steel slag mixed with slag

[0020]

[0021] Adding a certain proportion of steel slag into slag powder not only reduces the production cost of slag powder, but also increases the activity index of slag powder 7d and 28d after hydration reaction by 2% to 15% compared with that of slag powder without steel slag (according to material quality , ge...

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 superfine slag powder prepared by doping steel slag into mineral slag. The steel slag is waste residues discharged in a steel-making process; a plenty of steel slag blending stocks are added in the process of producing the superfine slag powder so as to prepare the superfine slag powder. Main chemical components of the steel slag comprise 18%-25% of SiO2, 4%-10% of Al2O3, 15%-35% of Fe2O3, 31%-50% of CaO and 5%-15% of MgO. When the superfine slag powder is produced, 20%-25% of the steel slag is adopted and 5%-10% of an exciting agent is doped into equipment for grinding superfine powder or grinding the mineral slag; 7d and 28d active indexes of the superfine slag powder are improved by 2%-15% when being compared with the active index of previous superfine slag powder. The production of the superfine slag powder is realized by grinding the mineral slag into certain fineness (specific surface area) to have a certain activity and doping the mineral slag into cement or concrete, so as to improve the performance of buildings and reduce the production cost.

Description

technical field [0001] The invention relates to the production technology of slag micropowder in the field of building materials, in particular to improving the activity index of slag micropowder and reducing the cost of production materials. Background technique [0002] Steel slag is the waste slag produced in the steelmaking process. Steel slag is an inert material and is not easy to grind. Currently, the utilization rate of steel slag is about 22%, which is low. Due to reasons such as low activity and high preparation cost, the popularization and application of steel slag powder is restricted. [0003] At present, there are very few applications of steel slag at home and abroad, and there is no technical report on the production of slag micropowder by mixing steel slag with slag. [0004] The storage of steel slag occupies a large amount of cultivated land and causes environmental pollution. The extensive use of steel slag is supported and encouraged by national policie...

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): C04B5/06
Inventor 李喜才
Owner 李喜才
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