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

Preparation method and application of adjusting material for electric furnace white slag thermal refining treatment

A technology for tempering and calcareous materials, which is applied in the technical field of comprehensive utilization of electric furnace white slag, can solve the problems of restricting white slag utilization and no gelling activity, and achieve environmental protection, improve gelling activity, and optimize minerals composition effect

Inactive Publication Date: 2015-01-28
SHAOGUAN COLLEGE
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the main silicate mineral phase in white slag is dicalcium silicate, and the main γ-C 2 The existence of S crystal form has almost no gelling activity, which seriously restricts the use of white slag as an auxiliary material in cement concrete

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
  • Preparation method and application of adjusting material for electric furnace white slag thermal refining treatment
  • Preparation method and application of adjusting material for electric furnace white slag thermal refining treatment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Select 33% converter steel slag, 17% coal slag, and 50% calcareous material (calculated as CaO) to prepare corresponding adjustment materials according to weight percentage, and then adjust the adjustment material and electric furnace white slag by weight percentage 46% adjustment material and 54% The white slag is mixed, and the mixture is calcined at a temperature of 1300°C, so that the adjustment material and the white slag undergo a chemical reaction; after the calcination is completed, the air cooling is used for rapid cooling; then the jaw crusher is used for crushing, and the ball mill is used for crushing Grinding until Blaine specific surface area is 350-450m 2 / kg, according to w (reference cement): w (white slag) = 70%: 30% to prepare cementitious materials, according to (GB / T 17671-1999) "Cement Mortar Strength Test Method (ISO Method)" Sand performance test.

Embodiment 2

[0026] Example 2: Select 29% converter steel slag, 14% coal slag, and 57% calcareous material (calculated as CaO) to prepare corresponding adjustment materials according to weight percentage, and then adjust the adjustment material and electric furnace white slag by weight percentage 50% The material is mixed with 50% white slag, and the mixture is calcined at 1300°C to cause a chemical reaction between the adjusted material and the white slag; after the calcination is completed, it is cooled quickly by air cooling; then it is crushed by a jaw crusher and then crushed by a ball mill. Grinding until Blaine specific surface area is 350-450m 2 / kg, according to w (reference cement): w (white slag) = 70%: 30% to prepare cementitious materials, according to (GB / T 17671-1999) "Cement Mortar Strength Test Method (ISO Method)" Sand performance test.

Embodiment 3

[0028] Select 31% converter steel slag, 15% coal slag, and 54% calcareous material (calculated as CaO) to prepare corresponding adjustment materials according to weight percentage, and then adjust the adjustment material and electric furnace white slag by weight percentage 48% adjustment material and 52% The white slag is mixed, and the mixture is calcined at 1300°C to make the adjustment material and the white slag chemically react; after the calcination is completed, it is cooled quickly by air cooling; then it is crushed by a jaw crusher and ground by a ball mill. Grind until Blaine specific surface area is 350-450m 2 / kg, according to w (reference cement): w (white slag) = 70%: 30% to prepare cementitious materials, according to (GB / T 17671-1999) "Cement Mortar Strength Test Method (ISO Method)" Sand performance test.

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
Login to View More

Abstract

The invention relates to an adjusting material for electric furnace white slag thermal refining treatment. The adjusting material comprises the following components in percentage by weight: 25-35% of steel slag, 12-17% of coal cinder, 50-60% of a calcium material (based on CaO) and 0-2% of an auxiliary material, wherein the sum of the components is 100%. The converter steel slag, the coal cinder, the calcium material and a small amount of auxiliary material are mixed to form the adjusting material; and after the adjusting material is mixed with white slag uniformly, chemical reaction happens at a high temperature, so that the mineral composition of the white slag is substantially optimized, the gelatinization activity of the white slag is improved, meanwhile, high additional value recycle rate of solid wastes such as the white slag, steel slag and coal cinder is increased, and the adjusting material is favorable for environmental protection.

Description

technical field [0001] The invention belongs to the technical field of comprehensive utilization of electric furnace white slag, and relates to a method of using converter steel slag, coal slag, calcareous materials and a small amount of auxiliary materials to mix with white slag and then calcining, so that chemical reactions between components occur, and the essence is optimized. The mineral composition of the white slag, the preparation method and application of the adjusting material for the high temperature conditioning treatment of the electric furnace white slag for improving the gelling activity of the white slag. Background technique [0002] Electric furnace white slag refers to the slag formed when carbon powder, ferrosilicon powder and other reducing agents are used for diffusion deoxidation during the reduction period of electric arc furnace steelmaking. It is in the form of white powder after cooling in air. With the development of our country's extra-furnace re...

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): C04B5/06
Inventor 贺图升赵旭光赵三银黎载波蔡惠文
Owner SHAOGUAN COLLEGE
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