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

Castable for ladle collector nozzle adopting corundum collector nozzle reclaimed material as aggregate and preparation method of castable

A corundum quality, recycled material technology, applied in water resources protection and other directions, can solve rare problems and achieve the effect of improving fluidity, excellent performance, and enhancing compactness

Inactive Publication Date: 2014-03-05
WUHAN IRON & STEEL (GROUP) CORP
View PDF3 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there are few reports on collecting part of the castables of the waste ladle drains, which are pickled and used to make castables for ladle drains

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
  • Castable for ladle collector nozzle adopting corundum collector nozzle reclaimed material as aggregate and preparation method of castable

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0038] A method for preparing a castable for a ladle sewer nozzle using corundum-based sewer nozzle reclaimed material as an aggregate, comprising the following steps:

[0039] 1) Recover the corundum drain nozzle from the steel factory, sort and classify, remove the steel shell and remove surface impurities after natural drying;

[0040] 2) The part containing the refractory material is crushed and equipped with a roller-type magnetic field iron removal device to achieve the purpose of removing large pieces of steel and slag attached to the nozzle;

[0041] 3) Sieve according to the required particle size, and wash the sieved material for 60 minutes;

[0042] 4) After cleaning, put the screened material into the anti-acid corrosion tank (the material in each tank is not more than 600kg). After feeding, wash with tap water for 60 minutes; after washing with water, add 30 kg of concentrated sulfuric acid with a molar concentration of 18mol / L in the tank, without changing the a...

Embodiment 1

[0045] A method for preparing a castable for a ladle sewer nozzle using corundum-based sewer nozzle reclaimed material as an aggregate, comprising the following steps:

[0046] Weigh 70% of the acid-washed corundum sewer recycling material, 14% of corundum fine powder, 10% of corundum fine powder, 5% of binder and 1% of dispersant, and mix them in a forced mixer for 4 to 6 minutes Finally, add water and mix for 2 to 3 minutes. After mixing evenly, it can be poured into the designated ladle nozzle mold for vibration casting and drying.

[0047] The corundum sewer material for pickling described in this example is divided into four gradations according to particle size: ≤8mm and >5mm, ≤5mm and >3mm, ≤3mm and >1mm and ≤1mm, and the weight percentages are respectively 8-15%, 25-35%, 20-30% and 25-35%.

[0048] Corundum fine powder is a mixture of platy sintered corundum fine powder with a particle size of 20-45 μm and <20 mm, and the mixing ratio is 2:1;

[0049] Corundum powder...

Embodiment 2

[0052] A method for preparing a castable for a ladle sewer nozzle using corundum-based sewer nozzle reclaimed material as an aggregate, comprising the following steps:

[0053] Weigh 60% of the acid-washed corundum sewer recycling material, 15% of corundum fine powder, 16.9% of corundum fine powder, 8% of binder and 0.1% of dispersant, and mix them in a forced mixer for 4 to 6 minutes Finally, add water and mix for 2 to 3 minutes. After mixing evenly, it can be poured into the designated ladle nozzle mold for vibration casting and drying.

[0054]The acid-washed corundum sewer reclaimed material described in this example is divided into four gradations according to particle size: ≤8mm and >5mm, ≤5mm and >3mm, ≤3mm and >1mm and ≤1mm, and its weight percentage They are 8-15%, 25-35%, 20-30% and 25-35%, respectively.

[0055] Corundum fine powder is a mixture of platy sintered corundum fine powder with a particle size of 20-45 μm and <20 mm, and the mixing ratio is 1.5:1;

[00...

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
Granularityaaaaaaaaaa
Login to View More

Abstract

The invention discloses castable for a ladle collector nozzle adopting a corundum collector nozzle reclaimed material as aggregate. The castable is characterized by being prepared from the following raw materials in percentage by weight: 60 to 70 percent of acid-pickled corundum collector nozzle reclaimed material, 10 to 15 percent of corundum fine powder, 10 to 18 percent of corundum micro powder, 5 to 8 percent of binding agent and 0.1 to 1 percent of dispersion agent. The preparation method comprises the following steps: recovering the corundum collector nozzle from a steel factory, and packaging the corundum collector nozzle reclaimed material for standby use after the treatment of the sorting, iron removing, crushing and acid pickling process; weighing the raw materials according to the weight percentage; uniformly mixing the weighed materials, and uniformly mixing the materials with water; pouring the mixture into a designed ladle collector nozzle mold, and vibrating, pouring, drying and molding the castable. The corundum fine powder adopts the mixture of plate-type sintered corundum fine powder with the granularity of 20 to 45 micrometers and the granularity of 0 to 20 micrometers, and the mixing ratio is optimized, so that not only can the mobility of the castable be improved, but also the gap of the castable can be effectively filled, the dense of the castable can be enhanced, and the strength is remarkably improved.

Description

technical field [0001] The invention relates to the field of recycling of waste refractory materials, in particular to a castable for ladle sewer nozzles with recycled corundum sewer nozzle materials as aggregates and a preparation method thereof. Background technique [0002] The iron and steel industry produces a large amount of waste refractory materials every year. In my country, only a small part of waste refractory materials are recycled for secondary use or downgraded for use, and they are mainly used for some low-grade repair materials. [0003] The ladle drains of domestic medium and large steel plants are generally made of corundum castables through vibration. After these ladle drains are used, except for the steel shells on the surface and the adhered scrap steel being recycled, the refractory materials are basically destroyed. Discarding and burying or using it in very low-grade repairing materials not only pollutes the environment, but also causes a serious wast...

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): C04B35/66
CPCY02A20/402
Inventor 王志强雷中兴易碧辉田先明郑吉红姚亚双曹一卢杰李家虎
Owner WUHAN IRON & STEEL (GROUP) CORP
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