Environment-friendly metallurgical magnesite and preparation method thereof

An environmentally friendly, magnesia technology, applied in the field of refractory materials, can solve the problems of physical injury to workers, poisonous chromic anhydride, and environmental pollution, and achieve the effects of good construction fluidity, good compactness, and adjustable hardening time

Inactive Publication Date: 2018-02-23
云南濮耐昆钢高温材料有限公司
View PDF6 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the disadvantages of chromic anhydride being toxic and highly corrosive, the production, construction process and after use of Martin sand will cause physical harm to workers and pollute the environment

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

[0025] An environment-friendly martin sand is prepared from the following raw materials: forsterite 5-3mm, adding 30%, 92 fused magnesia, 3-1mm, adding 20%, and middle-grade magnesia, 20%. The powder materials are 22% of mid-grade magnesia powder and 5% of brown corundum powder. Binder 3%; Additive 0.3%. Wherein the additives consist of 15% of metal aluminum powder, 57% of sodium citrate and 28% of oxalic acid.

Embodiment 2

[0027] An environment-friendly martin sand is prepared from the following raw materials: forsterite 5-3mm, adding 35%, 92 fused magnesia, 3-1mm, adding 15%, middle-grade magnesia, 20%. The powder materials are 17% of mid-grade magnesia powder and 8% of brown corundum powder. Binder 5%; Additive 0.35%.

Embodiment 3

[0029] An environment-friendly martin sand is prepared from the following raw materials: forsterite 5-3mm in 25%, 92 fused magnesia in 3-1mm in 15%, and mid-grade magnesia in 30%. The powder materials are 14% of mid-grade magnesia powder and 10% of brown corundum powder. Binder 6%; Additive 0.4%.

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
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to view more

Abstract

The invention discloses an environment-friendly metallurgical magnesite and a preparation method thereof. The environment-friendly metallurgical magnesite comprises the following raw materials in percent by weight: 25%-35% of forsterite, 10%-20% of 92-fused magnesite, 20%-30% of medium magnesia, 10%-25% of medium magnesia powder, 5%-10% of brown fused alumina powder, 3%-8% of a binding agent and 0.3%-0.4% of additive. The environment-friendly metallurgical magnesite is prepared from the raw materials, including forsterite, magnesia, brown aluminum oxide, silica powder, and the like; the environment-friendly metallurgical magnesite has the advantages of high compactness, high strength, excellent anti-scouring property and high construction liquidity; nontoxic and pollution-free binding agent is used for replacing chromic anhydride, so that the prepared metallurgical magnesite meets the construction and use requirements and is environment-friendly.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to an environment-friendly martin sand and a preparation method thereof. Background technique [0002] Forsterite is a high-quality refractory raw material with a high melting point (1890°C), low thermal conductivity (1 / 4 to 1 / 3 of pure magnesium oxide), not easy to hydrate, good chemical stability, and resistant to metal melts and Slag erosion, good compatibility with most basic refractory materials, and forsterite can remain stable when in contact with molten steel. In addition, the price of forsterite is low, and its price is about 1 / 2 of the raw material of magnesia. Due to the above characteristics of forsterite, it is widely used in metallurgy, thermal engineering and foundry industries. In the field of thermal engineering, forsterite is mainly used for heating furnace bottoms, hot blast furnace linings and checker bricks for various industrial kiln ...

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): C04B35/66
CPCC04B35/66C04B2235/3206C04B2235/3217C04B2235/3418C04B2235/3445C04B2235/402C04B2235/449
Inventor 张舰孙文新陈学松辉士昌
Owner 云南濮耐昆钢高温材料有限公司
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