Sand-based water-permeable brick prepared from electric-arc furnace steel slag and preparation method thereof

An electric arc furnace and permeable brick technology, which is applied in ceramic products, other household appliances, applications, etc., can solve the problems of low overall strength and easy aging, and achieve the effects of improving durability, increasing porosity and reducing production costs.

Inactive Publication Date: 2018-11-16
ANHUI UNIVERSITY OF TECHNOLOGY
View PDF7 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these patent documents all have an obvious commonality. Wind-blown sand or artificial sand is used as fine aggregate, and various organic resins are used as surface layer binder. This kind of brick has the disadvantages of low overall strength and easy aging.

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The cement used is ordinary silicon 42.5 cement.

[0029] The reinforcing agent used is a mixture of blast furnace granulated slag powder and microsilica powder in a ratio of 1:1.

[0030] The blast furnace granulated slag powder used is from the blast furnace granulated slag of Shagang Group Co., Ltd. and is ground by a vertical mill system. Its main chemical components are: SiO2: 32.8%, Al2O3: 17.54%, Fe2O3: 0.20%, CaO: 37.87%, MgO: 9.65%, SO3: 1.00%, f-CaO: 1.38%, the powder obtained after grinding has a fineness of 850 mesh and an activity index of 115%.

[0031] The thickener used is ethylene vinyl acetate emulsion.

[0032] The colorant used is iron red.

[0033] The water reducer used is an anthracene high-efficiency water reducer.

[0034] The water used was tap water.

[0035] The quick-setting agent used is bauxite, soda ash, and quicklime mixed in a mass ratio of 1:1:0.5, calcined at 1400°C, and ground into a 350-mesh powder.

[0036] The electric arc fu...

Embodiment 2

[0045] The cement used is ordinary silicon 42.5 cement.

[0046] The reinforcing agent used is a mixture of blast furnace granulated slag powder and microsilica powder in a ratio of 1:1.

[0047] The blast furnace granulated slag powder used is from the blast furnace granulated slag of Shagang Group Co., Ltd. and is ground by a vertical mill system. Its main chemical components are: SiO2: 32.8%, Al2O3: 17.54%, Fe2O3: 0.20%, CaO: 37.87%, MgO: 9.65%, SO3: 1.00%, f-CaO: 1.38%, the powder obtained after grinding has a fineness of 850 mesh and an activity index of 115%.

[0048] The thickener used is ethylene vinyl acetate emulsion.

[0049] The coloring agent used is iron yellow.

[0050] The water reducer used is polycarboxylate high performance water reducer.

[0051] The water used is standard industrial circulating water.

[0052] The quick-setting agent used is bauxite, soda ash, and quicklime mixed in a mass ratio of 1:1:0.5, calcined at 1400°C, and ground into a 350-mes...

Embodiment 3

[0062] The cement used is ordinary silicon 42.5 cement.

[0063] The reinforcing agent used is a mixture of blast furnace granulated slag powder and microsilica powder in a ratio of 1:1.

[0064] The blast furnace granulated slag powder used is from the blast furnace granulated slag of Shagang Group Co., Ltd. and is ground by a vertical mill system. Its main chemical components are: SiO2: 32.8%, Al2O3: 17.54%, Fe2O3: 0.20%, CaO: 37.87%, MgO: 9.65%, SO3: 1.00%, f-CaO: 1.38%, the powder obtained after grinding has a fineness of 850 mesh and an activity index of 115%.

[0065] The thickener used is ethylene vinyl acetate emulsion.

[0066] The coloring agent used is one of iron black.

[0067] The water reducer used is a mixture of anthracene-based high-efficiency water-reducer and polycarboxylic acid-based high-performance water-reducer.

[0068] The water used was tap water.

[0069] The quick-setting agent used is bauxite, soda ash, and quicklime mixed in a mass ratio of 1...

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 provides a sand-based water-permeable brick prepared from electric-arc furnace steel slag and a preparation method thereof, belonging to the field of utilization of metallurgical solid waste. The water-permeable brick is composed of, by mass, 100 parts of cement, 8-12 parts of a reinforcing agent, 1-10 parts of a thickening agent, 350-550 parts of electric arc furnace steel slag aggregate, 1.5-3.5 parts of an accelerator, 3-5 parts of a coloring agent, 0.3-3.0 parts of a water reducing agent and 15-20 parts of water. After thorough mixing and stirring a plurality of times, the above components are placed in a brick making machine for press forming. The water-permeable brick prepared in the invention has good water permeability, long water permeable duration, high compressivestrength and low density, can be widely applied to municipal projects such as sponge cities, realizes the high-added-value utilization of the electric arc furnace steel slag and protects ecological environment.

Description

technical field [0001] The invention relates to the field of metallurgical solid waste utilization, in particular to a sand-based permeable brick prepared from electric arc furnace steel slag and a preparation method thereof. Background technique [0002] my country is currently the world's largest producer and consumer of stainless steel. Since 2007, my country's crude stainless steel production has accounted for 25% of global production. During the smelting process of stainless steel, a large amount of waste slag will be produced, such as electric arc furnace (EAF) slag, argon oxygen refining (AOD) slag and vacuum oxygen decarburization (VOD) slag. Usually, the production of 1 ton of stainless steel can produce about 250kg of waste residue. Among these waste slags, the heavy metal content of the electric arc furnace (EAF) slag is relatively low, and the stainless steel slag can be used as a building material after being harmless and partially recycled. However, at presen...

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): C04B28/04C04B38/08C04B111/40C04B111/20
CPCC04B28/04C04B38/08C04B2111/00017C04B2111/00284C04B2111/20C04B2111/40C04B2201/50C04B2103/44C04B18/142C04B2103/12C04B2103/54C04B2103/302C04B18/141C04B18/146
Inventor 李灿华张明亚黄贞益于巧娣候绿林
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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