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

Dynamic viscosity measurement-based method for detecting corrosion resistance of refractory material

A refractory material and dynamic measurement technology, applied in the field of refractory materials, can solve problems such as the inability to reflect the real erosion condition, and achieve the effect of instantaneousness and authenticity, true and accurate results, and simple equipment

Active Publication Date: 2014-07-23
PEKING UNIV
View PDF6 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The static method is simple and easy to implement, but it cannot reflect the real erosion situation; the dynamic method is close to the real erosion situation, but the measurement result is an average effect, which can only measure the average erosion result for a period of time, but cannot truly reflect the slag erosion of refractory materials dynamically. , especially the instantaneous erosion rate

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
  • Dynamic viscosity measurement-based method for detecting corrosion resistance of refractory material
  • Dynamic viscosity measurement-based method for detecting corrosion resistance of refractory material
  • Dynamic viscosity measurement-based method for detecting corrosion resistance of refractory material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Embodiment 1: experiment determines the relation of viscosity and radius

[0037] 1) Cut aluminum refractories into figure 2 Refractory measuring head of the shape shown, the chemical composition of the refractory is CaO:1.1%, SiO 2 :12.0%,Al 2 o 3 : 85.1%, FeO: 0.4%. The radius of the cylindrical part of the refractory measuring head is 10.2cm, 9.5cm, 8.5cm, 7cm, 5cm in sequence.

[0038] 2) Take 10.2cm as the initial radius of the refractory measuring head, and the mass of other radii reduced relative to the initial radius is taken as the erosion amount and added to the slag.

[0039] 3) Measure the viscosity at 1550°C, 1500°C and 1450°C under the corresponding slag composition with refractory measuring heads with different radii, and obtain the relationship between the viscosity value and the degree of erosion in Table 1. This is the reference viscosity point for the entire erosion measurement.

[0040] Table 1 Relationship between viscosity value and erosion ...

Embodiment 2

[0042] Example 2 The measurement temperature is 1550°C slag erosion to aluminum refractories

[0043] 1) Cut aluminum refractories into figure 2 Refractory measuring head of the shape shown, the chemical composition of the refractory is CaO:1.1%, SiO 2 :12.0%,Al 2 o 3 : 85.1%, FeO: 0.4%. see figure 1, the refractory measuring head 8 is in the shape of a cone connected under a cylinder, and the radius of the cylinder part is 10.2cm. There is a connecting part on the top of the cylinder. The shape of the top of the measuring head ┻┻ is used to connect the suspension wire 4, the refractory material wrapped outside and the measuring head.

[0044] 2) The chemical composition is CaO: 40%, SiO 2 :37%,Al 2 o 3 :13%,MgO:7%,TiO 2 Put into molybdenum crucible 9 after the slag of 3% is fully mixed, then put into the hearth heating zone of tubular heating furnace 6 and prepare to heat; Furnace tube 7 is passed into nitrogen, guarantees that crucible is not oxidized. The upper d...

Embodiment 3

[0049] Example 3 Measuring temperature is 1500 ℃ slag erosion to aluminum refractory material

[0050] 1) Make the aluminum refractory material into the directional measuring head of the required shape, and the radius of the cylindrical part is 10.2cm. The chemical composition of the refractory material is CaO: 1.1%, SiO 2 :12.0%,Al 2 o 3 :85.1%, FeO:0.4%;

[0051] 2) The chemical composition is CaO: 40%, SiO 2 :37%,Al 2 o 3 :13%,MgO:7%,TiO 2 : 3% of the slag is fully mixed and then put into a molybdenum crucible, and then put into the furnace heating zone to prepare for heating;

[0052] 3) Start furnace heating, heat up at 5°C / min, keep warm for 2 hours when it reaches 1600°C, make the slag composition fully uniform, and put the directional probe at the same time; then start to cool down at a rate of 5°C / min, after reaching 1500°C Keep warm for 0.5 hours. Then start the motor, rotate the directional probe, and start to measure the slag erosion resistance of the refr...

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
flame retardantaaaaaaaaaa
radiusaaaaaaaaaa
Login to View More

Abstract

The invention provides a dynamic viscosity measurement-based method for detecting corrosion resistance of a refractory material. The method comprises the steps of (1) manufacturing a refractory material to be detected into a directional measuring head with a fixed shape, wherein the directional measuring head is in the shape that a cone is connected to and arranged under a cylinder; (2) putting furnace slag into a heating device, heating the heating device to 1600 DEG C, carrying out heat preservation for a period of time, and soaking the directional measuring head into the furnace slag after the furnace slag is completely melted; (3) cooling to 1000-1600 DEG C at a certain cooling speed; and (4) rotating the directional measuring head, measuring the viscosity and the radius, reduced by corrosion, of the cone part of the directional measuring head, and working out the corrosion rate according to the radius reduced by corrosion. After the method is adopted, the status that the refractory material is corroded by furnace slag can be truly reflected in a dynamic way by measuring the change of the viscosity of furnace slag, so that the instantaneity and the truth of the measurement on the refractory material corroded by furnace slag can be realized; the method is capable of not only reflecting the average effect of corroding the refractory material by furnace slag within a certain time, but also reflecting the real rate of corroding the refractory material by furnace slag with fixed components at certain temperature by calculating an initial corrosion rate.

Description

technical field [0001] The invention belongs to the field of refractory materials, and in particular relates to a method for detecting the anti-erosion performance of refractory materials. Background technique [0002] Refractory materials have high temperature insulation effect and play an important role in metallurgical industry, ceramic industry, glass industry and other industries. High-temperature metallurgical furnaces, such as blast furnaces, widely use refractory materials as lining materials. In the metallurgical industry, slag mainly plays an important role in preventing metal secondary oxidation, regulating heat transfer and mass transfer. In blast furnaces, refractories interact with slag and are eroded by slag, and the service life of a blast furnace largely depends on the slag erosion of the refractories used. Therefore, it is of great significance to measure the erosion of refractory materials by slag, and now many researchers have noticed the importance of ...

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): G01N11/00
Inventor 王习东孙永奇郑凯刘丽丽
Owner PEKING UNIV
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