Unlock instant, AI-driven research and patent intelligence for your innovation.

Chamotte for rapidly replacing water feeding opening of steel ladle in online manner

A fast and fire-clay technology, applied in the field of metallurgical refractory materials, can solve the problems affecting the normal turnover of ladles, reducing the service life of refractory materials, unfavorable production, etc., achieving the effects of low sintering strength, improving replacement efficiency, and reducing labor intensity

Active Publication Date: 2014-11-26
NANJING IRON & STEEL CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the nozzle seat brick is damaged, the ladle needs to be rebuilt and baked. The whole process not only reduces the service life of the refractory material but also affects the normal turnover of the ladle, which is not conducive to fast-paced production.

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

[0020] The present embodiment is used for the on-line rapid replacement of the upper nozzle of the ladle, and its weight percentage components are: 42% of fused white corundum fine powder with a particle size of less than 45um, and SiO with a particle size of less than 2um 2 The content is not less than 90% of silicon powder 7%, the particle size is less than 45um flake graphite 46%, the binder is 5% sodium lignosulfonate, and the dispersant is 0.2% sodium tripolyphosphate.

[0021] The fire cement for replacing the upper nozzle of this embodiment is to mix the above-mentioned prepared raw materials fully and evenly, and add water to adjust to the construction requirements before construction on site. During use, the operator only needs to rely on simple machinery to realize online rapid replacement of the ladle upper nozzle, which reduces labor intensity, improves work efficiency, and realizes rapid turnover of ladles.

Embodiment 2

[0023] The fire clay used for ladle online rapid replacement of the upper nozzle in this embodiment has the following components in weight percentage: 30% of fused white corundum fine powder with a particle size of less than 45um, 20% of brown corundum with a particle size of less than 76um, and SiO with a particle size of less than 2um 2 The content is not less than 90% of silicon powder 3%, the particle size is less than 45um flake graphite 45%, the binder is 2% aluminum dihydrogen phosphate fine powder, and the dispersant is 0.2% sodium tripolyphosphate.

[0024] The fire cement for replacing the upper nozzle of this embodiment is to mix the above-mentioned prepared raw materials fully and evenly, and add water to adjust to the construction requirements before construction on site. During use, the operator only needs to rely on simple machinery to realize online rapid replacement of the ladle upper nozzle, which reduces labor intensity, improves work efficiency, and realizes...

Embodiment 3

[0026] The present embodiment is used for the on-line rapid replacement of the upper nozzle of the ladle, and its weight percentage components are: 49% of fused white corundum fine powder with a particle size of less than 45um, and SiO with a particle size of less than 2um 2 The content is not less than 90% silicon powder 5%, the particle size is less than 45um electrode graphite powder 43%, the binder is 2% aluminum dihydrogen phosphate fine powder and 1% sodium lignosulfonate, and the dispersant is 0.2% sodium tripolyphosphate.

[0027] The fire cement for replacing the upper nozzle of this embodiment is to mix the above-mentioned prepared raw materials fully and evenly, and add water to adjust to the construction requirements before construction on site. During use, the operator only needs to rely on simple machinery to realize online rapid replacement of the ladle upper nozzle, which reduces labor intensity, improves work efficiency, and realizes rapid turnover of ladles. ...

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 the technical field of a metallurgical fire-resistant material and provides chamotte for rapidly replacing a water feeding opening of a steel ladle in an online manner. The chamotte comprises the components in percentage by weight as follows: 30-50% of Al2O3, 2-8% of SiO2, 35-60% of C, and 2-5% of binding agent, wherein the sum of the components is 100%. Furthermore, 0.2-1% of dispersing agent is added, and the content of the dispersing agent is 0.2-1% of a total amount of the chamotte. The chamotte for rapidly replacing the water feeding opening of the steel ladle in the online manner provided by the invention has the advantages of high binding strength, low sintering strength, and no steel leakage; the online rapid replacement of the water feeding opening of the steel ladle can be realized; the replacement efficiency of the water feeding opening is obviously improved; and the labor intensity is reduced.

Description

technical field [0001] The invention relates to the technical field of metallurgical refractory materials, in particular to a fire clay used for online rapid replacement of an upper nozzle of a ladle. Background technique [0002] The ladle nozzle is generally divided into upper and lower nozzles. Both the upper and lower nozzles are installed in the ladle nozzle block. At present, fire cement is generally used to install the upper nozzle in the nozzle block. When using a certain furnace, the upper nozzle needs to be repaired. On-line replacement, because the fire mortar is sintered during the steel pouring process to firmly fix the upper nozzle in the nozzle block, it is difficult to remove the upper nozzle quickly and easily. At this time, the operator needs to hit the upper nozzle with the help of a phoenix pick. The operation time is long, the labor intensity is high, and the nozzle seat brick is easily damaged. If the nozzle seat brick is damaged, the ladle needs to be...

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 Patents(China)
IPC IPC(8): C04B35/66
Inventor 吴志峰朱定华
Owner NANJING IRON & STEEL CO LTD