Supercharge Your Innovation With Domain-Expert AI Agents!

Refractory ball for blast furnace ball type hot-blast stove

A technology of refractory balls and hot blast stoves, applied in blast furnaces, blast furnace details, blast furnace parts, etc., can solve the problems of poor durability, low service life, insufficient heat capacity and strength in the high temperature section of hot blast stoves, and achieve strong chemical corrosion resistance and long life The effect of long length and large heat capacity

Inactive Publication Date: 2005-10-05
LIUZHOU IRON & STEEL
View PDF2 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the two kinds of refractory balls have a common disadvantage, that is, the durability is poor in the high temperature section of the hot blast furnace, and the service life is low. The reason is that the magnesium aluminum balls will be pulverized and damaged, and the high aluminum balls will be bonded into waste, and they must be stopped after 1 to 3 years of use. Furnace cleaning, ball changing, and they don't have enough heat capacity and strength for 450m 3 The high-temperature section of the spherical hot blast stove of the above-mentioned large and medium-sized blast furnace

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

[0017] A certain 750m 3 The Φ75 zirconium corundum ball used in the high temperature section of the blast furnace ball hot blast stove is composed of 56% sub-white corundum, 36% sub-white corundum and zircon fine powder, 4% alumina fine powder, 4% clay, sub-white corundum and zircon The proportion of stone fine powder is sub-white corundum: zircon = 3:1. The raw materials are weighed, proportioned, and mixed to make a dry mixture, and then 2% of the binder sulfurous acid pulp waste liquid is added. After stirring evenly, the material is trapped for 36 hours, and it is molded by a semi-dry machine with a pressure of 60 tons. After the ball blank is dried at 50-110°C for 3 days, it is fired in a high-temperature kiln at a firing temperature of 1480-1500°C. The finished refractory ball contains Al 2 o 3 85.11%, containing ZrO 2 4.85%, containing Fe 2 o 3 0.45%. The bulk density of the refractory ball is 3.21g / cm 3 , compressive strength is 50000N / ball, apparent porosity is...

Embodiment 2

[0019] A certain 750m 3 The Φ75 zirconium corundum ball used in the high temperature section of the blast furnace ball hot blast stove is composed of 54% sub-white corundum, 34% sub-white corundum and zircon fine powder, 4% alumina micro-powder, 4% clay, and 1% white corundum fine powder 1%, brown corundum fine powder 1%, zirconium corundum fine powder 2%, the proportioning of sub-white corundum and zircon fine powder is sub-white corundum: zircon=3:1. The raw materials are weighed, proportioned, and mixed to make a dry mixture, and then 2% of the binder sulfurous acid pulp waste liquid is added. After stirring evenly, the material is trapped for 36 hours, and it is molded by a semi-dry machine with a pressure of 60 tons. The billets are dried at 50-110°C for 3 days, and fired in a high-temperature kiln at a firing temperature of 1500-1520°C. The finished refractory balls contain Al 2 o 3 86.52%, containing ZrO 2 5.05%, containing Fe 2 o 3 0.45%. The bulk density of the ...

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
densityaaaaaaaaaa
Login to View More

Abstract

This invention relates to a refractory ball used in globe hot-blast stove. The component of this refractory ball comprises sub-white corundum 50-65%, sub-white corundum and zircon powder 30-45%, alumina micro-powder 3-10%, clay 2-6%, white corundum 0-10%, brown corundum 0-10%, zircon corundum powder 0-10%, and the adhesive agent 1.5-2.5%; the finished product contains Al2O3 80-90%, ZrO2 4-8%, Fe2O3<=1.0%. The refractory ball has large heat volume, high intensity, strong anti-chemical erosion and long life span, and meets the demand of above 450 stere hot-blast stove.

Description

technical field [0001] The invention relates to the field of blast furnace ironmaking, and belongs to refractory products, in particular to a refractory ball for a blast furnace ball-type hot blast stove. technical background [0002] The ball hot blast stove is a new blast furnace production technology that has been popularized and applied in the past 20 years. Compared with the traditional hot blast stove, it has the advantages of less investment, high thermal efficiency, energy saving and water saving. The heat exchange element used in the ball-type hot blast stove is a refractory ball. At present, there are mainly high-aluminum refractory balls (application number 98100364.8) and magnesium-aluminum refractory balls (application number 95104269.6). 3 The use of the following blast furnaces has achieved good results, and the maximum air temperature can reach 1100 ° C, which can fully meet the production requirements of small and medium blast furnaces...

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): C04B35/106C21B9/00
Inventor 潘之雄章炳炎卢向党腾树满潘光耀
Owner LIUZHOU IRON & STEEL
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