Supercharge Your Innovation With Domain-Expert AI Agents!

Melting-casting sand mold material and preparation method thereof

A technology of sand mold and brick sand, which is applied in the field of melting and casting sand mold materials and its preparation, can solve the problems of low utilization rate, pollution of the environment, waste of resources, etc., and achieve the effects of thin erosion layer, reduction of environmental load, and simple construction

Active Publication Date: 2018-05-01
RUITAI MATERIALS TECHNOLOGY CO LTD
View PDF8 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are about 1,700 cement kiln production lines in the country, and more than 100,000 tons of used magnesia-aluminum spinel bricks are replaced and eliminated every year. The utilization rate is low, which pollutes the environment and wastes resources.

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
  • Melting-casting sand mold material and preparation method thereof
  • Melting-casting sand mold material and preparation method thereof
  • Melting-casting sand mold material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Expressed in weight percentage, the raw materials are: 15% of recycled magnesia-spinel brick sand of 5~3mm, 45% of recycled magnesia-spinel brick sand of 3~1mm, and recycled magnesia-spinel brick sand -The weight composition of spinel brick sand is: MgO 82.5%, MgO+Al 2 o 3 91.9%, Fe 2 o 3 0.72%, CaO 1.03%, 40% of magnesia ≤ 1mm, the MgO content of magnesia is 95.3%; The ratio of 7 is added to the water glass solution, and it is used after standing for 24 hours. Modified water glass modulus is 2.9. Weigh the above-mentioned raw materials according to the required ratio, mix the materials in the mixer for 1 minute, add 5% by weight of modified water glass, continue to stir for 3 minutes, and carry out manual or mechanical molding according to the size of the template after discharging. Dry at ℃ for 8 hours, and form molds as required after drying. Its performance indicators are shown in the following table 1:

[0022]

Embodiment 2

[0024] Expressed in weight percentage, the raw materials are: 10% of recycled magnesite-spinel brick sand of 5~3mm, 45% of recycled magnesite-spinel brick sand of 3~1mm, recycled magnesium of ≤1mm Periclase-spinel brick sand 20%, the weight composition of recycled magnesite-spinel brick sand is: MgO 80.4%, MgO+Al 2 o 3 88.9%, Fe 2 o 3 0.76%, CaO 1.25%, magnesia 20%≤1mm, the MgO content of magnesia is 95.7%; The addition amount of modified water glass is 5%, and modified water glass adopts polyacrylamide under normal temperature according to weight ratio 1: The ratio of 10 is added to the water glass solution, and it is used after standing for 24 hours. Modified water glass modulus is 2.7. Weigh the above raw materials according to the required ratio, mix the materials in the mixer for 2 minutes, add 7% weight ratio of modified water glass, continue to stir for 3 minutes, and carry out manual or mechanical molding according to the size of the template after discharging. ...

Embodiment 3

[0026] Expressed in weight percentage, the raw materials are: 12% of recycled magnesia periclase-spinel brick sand of 5~3mm, 55% of recycled magnesia periclase-spinel brick sand of 3~1mm, recycled magnesium of ≤1mm Periclase-spinel brick sand 13%, the weight composition of recycled magnesite-spinel brick sand is: MgO 82.4%, MgO+Al 2 o 3 93.7%, Fe 2 o 3 0.57%, CaO 1.05%, magnesia 20%≤1mm, the MgO content of magnesia is 92.7%; The addition amount of modified water glass is 4%, and modified water glass adopts polyacrylamide under normal temperature according to weight ratio 1: The ratio of 8 is added to the water glass solution, and it is used after standing for 24 hours. Modified water glass modulus is 2.8. Weigh the above raw materials according to the required ratio, mix the materials in the mixer for 2 minutes, add 4% weight ratio of modified water glass, continue to stir for 2 minutes, and carry out manual or mechanical molding according to the size of the template aft...

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 melting-casting sand mold material and a preparation method thereof. The melting-casting sand mold material is prepared from the following raw materials: recycled magnesiumpericlase-spinel brick sand, magnesium sand and modified sodium silicate, wherein the recycled magnesium periclase-spinel brick sand is composed of sand with granularity of 5-3mm, sand with granularity of 1-3mm and sand with granularity being smaller than or equal to 1mm; the recycled magnesium periclase-spinel brick sand is prepared from the following components: greater than or equal to 75% of MgO, greater than or equal to 80% of MgO+Al2O3, less than or equal to 1% of Fe2O3 and less than or equal to 1.5% of CaO; the magnesium sand comprises greater than or equal to 90% of MgO; a modifier ofthe modified sodium silicate is polyacrylamide, and the modulus is 2.4-3.0. The preparation method of the melting-casting sand mold material is prepared the following steps: mixing and stirring the recycled magnesium periclase-spinel brick sand with the magnesium sand, adding the modified sodium silicate, continuously stirring, discharging the material and molding, drying for 8-24 hours at 180-260DEG C, and assembling the material according to the requirements for later use. The melting-casting sand mold material is high in fire resistance, high in high-temperature performance, high in thermal shock resistance, free of pollution to castings, simple and convenient to construct and low in cost, and is green and environmentally friendly.

Description

technical field [0001] The invention relates to a melting and casting sand mold material and a preparation method thereof, belonging to the field of refractory materials of the discipline of inorganic non-metallic materials. Background technique [0002] Sand mold is the key material for the preparation of cast refractory materials. The quality of sand mold directly affects the quality of cast refractory materials after casting. The requirements of cast refractory materials for sand molds include: 1. Sufficient refractoriness to resist the erosion of high-temperature melt; 2. A certain strength at room temperature and high temperature ensures the assembly and transportation of the sand formwork and the integrity of the sand mold during the casting process; 3. Good collapsibility, which is conducive to demoulding and does not stick to sand. Sand molds commonly used at present mainly include: sodium silicate combined with silica sand, as described in patent CN102341550B; resin...

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): C04B35/66C04B33/132C04B33/13
CPCC04B33/131C04B33/1324C04B35/66C04B2235/9607Y02P40/60
Inventor 王俊涛毛利民徐如林何泽洪赵洪亮周章怀刘继旺李剑文
Owner RUITAI MATERIALS TECHNOLOGY CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com