Check patentability & draft patents in minutes with Patsnap Eureka AI!

Alpha-aluminum oxide powder for refractory material and preparation method of alpha-aluminum oxide powder

A technology of alumina powder and refractory materials, applied in the field of refractory materials, can solve the problems of increasing construction difficulty, instability of mortar fluidity and curing time, affecting the reinforcement effect of ladle and forehearth, and improving construction difficulty , fluidity and curing time are stable and controllable, and the effect of long service life

Inactive Publication Date: 2019-03-15
河南天马新材料股份有限公司
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing a-alumina powder for pouring refractories, the a-alumina powder is first prepared into mortar for cold and hot pouring and repairing of ladles and forehearths. The fluidity and curing time of the mortar are very different. Stable, affecting the reinforcement effect of cold and hot repairs of ladles and forehearths, increasing the difficulty of construction

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
  • Alpha-aluminum oxide powder for refractory material and preparation method of alpha-aluminum oxide powder
  • Alpha-aluminum oxide powder for refractory material and preparation method of alpha-aluminum oxide powder
  • Alpha-aluminum oxide powder for refractory material and preparation method of alpha-aluminum oxide powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] During the use of refractory materials, the fluidity and stability of the curing time of the mortar are crucial to the service life of the ladle and forehearth after cold and hot repairs.

[0021] For a kind of a-alumina powder used in refractory materials, whether the fluidity and curing time of the mortar is stable or not is mainly verified by the flow test of the mortar, that is, the fluidity index changes little during the construction repair time And it meets the minimum requirements for construction flow, which means that the fluidity and stability of curing time of the mortar added with a-alumina powder for refractory materials are better.

[0022] Experimental results: the a-alumina powder prepared by the present invention replaces 3-10% of the a-alumina powder of the original mortar component;

[0023] 1. Mortar fluidity test method:

[0024] ①Introduce the raw materials into the mixing bag and pre-mix for 3 minutes;

[0025] ② Pour the mixed dry material int...

Embodiment 2

[0034] A kind of α-alumina powder for refractory materials, the α-alumina powder is made of the following weight ratio: industrial grade alumina 90%-98%, industrial grade aluminum hydroxide 1%- 9%, boric acid 0.1%-1%, special mineralizer 0.1%-1%.

[0035] The boric acid is a sodium removing agent.

[0036] The special mineralizer is a phase-inversion mineralizer, which includes ammonium chloride and calcium fluoride, wherein the weight ratio of ammonium chloride and calcium fluoride is 9:1.

[0037] The preparation method of α-alumina powder for refractory material, described method according to such as figure 1 Steps shown:

[0038] Step 1): raw materials are weighed, and each raw material is weighed according to the above weight ratio;

[0039] Step 2): Stir and mix, add the weighed raw materials into the stirring device in turn, and mix and stir;

[0040] Step 3): calcining, put the above-mentioned mixed and stirred raw materials into a calciner, calcining at 1450°C-148...

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 alpha-aluminum oxide powder for a refractory material and a preparation method of the alpha-aluminum oxide powder. The alpha-aluminum oxide powder is prepared from the following ingredients by weight percentage: 90%-98% of first-class industrial aluminum oxide, 1%-9% of first-class industrial aluminum hydroxide, 0.1%-1% of boric acid and 0.1%-1% of a special mineralizer. The alpha-aluminum oxide powder prepared by taking the industrial aluminum oxide and the aluminum hydroxide as raw materials, adding the special mineralizer and by adopting the processes of material mixing, calcination, grinding, grading, surface treatment and the like is used for replacing 3-9% of alpha-aluminum oxide powder in the original mortar component, so that the fluidity and the curing time of mortar can be stably controlled, therefore, the reinforcement effect of cold and hot repairing and the stability of the reinforcement effect of a steel ladle and a material channel can be improved, and the construction difficulty is improved. The alpha-aluminum oxide powder has the advantages of being stable in effect, convenient to repair and long in service life.

Description

technical field [0001] The invention relates to the technical field of refractory materials, in particular to an a-alumina powder for refractory materials and a preparation method thereof. Background technique [0002] a-Alumina, with high temperature resistance inertness, strong heat resistance, high hardness, can be widely used in the reinforcement and toughening of various plastics, rubber, ceramics, refractory materials and other products, especially to improve the compactness and coldness of ceramics Thermal fatigue, fracture toughness, creep resistance and wear resistance are particularly remarkable. [0003] The existing a-alumina powder for pouring refractories, the a-alumina powder is first prepared into mortar for cold and hot pouring and repairing of ladles and forehearths. The fluidity and curing time of the mortar are very different. Stable, affecting the reinforcement effect of cold and hot repairs of ladles and forehearths, increasing the difficulty of constr...

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): C04B35/101C04B35/626C04B35/66
CPCC04B35/101C04B35/626C04B35/62615C04B35/62645C04B35/66C04B2235/3218C04B2235/3409C04B2235/444C04B2235/445
Inventor 马淑云张朝民吕慧滨
Owner 河南天马新材料股份有限公司
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