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

Carbon-free dry material for continuous casting tundish

A continuous casting tundish and dry material technology, applied in the field of refractory materials, can solve the problems of carburization of molten steel, insufficient strength at low and medium temperatures, and poor workability

Active Publication Date: 2021-09-14
SHANGHAI LIER REFRACTORY MATERIAL
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a carbon-free dry material for continuous casting tundish, to overcome the irritating and harmful gas released by the binder in the prior art , Containing carbon elements leads to carburization of molten steel, poor workability, insufficient low-temperature and medium-temperature strength, etc.

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
  • Carbon-free dry material for continuous casting tundish
  • Carbon-free dry material for continuous casting tundish

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～6 and comparative example 1～4

[0023] The mass fractions of raw material components of the carbon-free dry materials for continuous casting tundishes of Examples 1-6 and Comparative Examples 1-4 are shown in Table 1.

[0024] The raw material composition of table 1 embodiment 1~6 and comparative example 1~4, %

[0025]

[0026] The carbon-free dry material sample preparation for the continuous casting tundish of Examples 1-6 and Comparative Examples 1-4 was carried out according to GB / T 4513.5. The tests of bulk density, linear change rate, flexural strength and compressive strength shall be carried out according to the test methods in GB / T 4513.6. The slag resistance is determined by the static crucible method, and the penetration resistance and corrosion resistance of the refractory material in the middle section of the crucible are observed. The test results are listed in Table 2.

[0027] From the comparison of the data in Table 1 and Table 2, it can be seen that the carbon-free dry material for co...

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 carbon-free dry material for a continuous casting tundish. The carbon-free dry material comprises the following raw materials in percentage by mass: 9%-18% of olive sand of 5-3mm, 25%-35% of 91 magnesia of 3-1mm, 20%-30% of 91 magnesia of 1-0mm, 20%-30% of 91 magnesia of 200 meshes, 2.5%-4.5% of sodium metasilicate nonahydrate, 1.2%-2% of sodium hexametaphosphate and 0.3%-0.8% of low-melting-point glass powder. The dry material does not contain carbon, harmful volatile gas is not generated in the ladle baking and using process, the workshop environment is improved, and the working conditions of operators are improved; and the production and use requirements can be met at low-temperature, medium-temperature and high-temperature strength.

Description

technical field [0001] The invention relates to the technical field of refractory materials, in particular to a carbon-free dry material for continuous casting tundishes. Background technique [0002] There are two main types of dry materials for continuous casting tundish: magnesia and magnesium-calcium. In actual production, magnesia dry materials are mostly used. Since the dry material does not contain water, the selection and proportion of the binder is particularly important. When selecting the binder, firstly, it does not contain water or contains a small amount of crystal water. It cannot react with magnesia under low temperature conditions. Heating at 200-300°C After baking, it has a certain flexural and compressive strength to facilitate the demoulding operation. After heating at a high temperature of 1550°C, the dry material is sintered into a dense and solid whole, ensuring that the dry material meets the requirements of the working layer of the tundish. Working ...

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): C04B35/043B22D41/02
CPCC04B35/043B22D41/02C04B2235/3201C04B2235/3427C04B2235/36C04B2235/3445
Inventor 李胜春李洪波李勇伟李维锋施晓海孙振猛
Owner SHANGHAI LIER REFRACTORY MATERIAL
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