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High temperature resistant filler for manufacturing cast steel stave for blast furnace

A technology of high temperature resistant filler and cooling wall, applied in cooling devices and other directions, can solve the problem that the effect needs to be further improved, and achieve the effect of improving the efficiency of the enterprise and improving the overall quality

Active Publication Date: 2018-04-03
MAANSHAN RUNTONG HEAVY IND TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These applications are all designed and improved from the perspective of protecting the cooling water pipe from "melting without piercing", but the effect of its actual use needs to be further improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A kind of manufacturing method of cast steel stave for blast furnace of the present embodiment, its concrete steps are:

[0034] Step 1: Treatment of cooling water pipes

[0035] Block one end of the cooling water pipe before the elbow with a wooden plug, and fill the inside of the cooling water pipe with high-temperature-resistant filler from the other end of the cooling water pipe. The high temperature resistant filler in this embodiment is composed of chromite sand, aluminum powder, graphite powder, perlite powder, lime powder, blast furnace gas ash, rutile titanium dioxide and calcium-free chromium slag, and each component is composed of the following parts by mass : 82 parts of chromite sand, 11 parts of aluminum powder, 5 parts of graphite powder, 3 parts of perlite powder, 3 parts of lime powder, 8 parts of blast furnace gas ash, 3 parts of rutile titanium dioxide, 8 parts of calcium-free chromium slag. Among them, the chromite sand is required to meet the follo...

Embodiment 2

[0046] The basic process of the manufacturing method of a kind of blast furnace cast steel cooling stave of the present embodiment is the same as embodiment 1, and its concrete steps are as follows:

[0047] Step 1: Treatment of cooling water pipes

[0048] Block one end of the cooling water pipe before the elbow with a wooden plug, and fill the inside of the cooling water pipe with high-temperature-resistant filler from the other end of the cooling water pipe. The high temperature resistant filler in this example is composed of chromite sand, aluminum powder, graphite powder, perlite powder, lime powder, blast furnace gas ash, rutile titanium dioxide and calcium-free chromium slag, and each component is composed of the following parts by mass : 80 parts of chromite sand, 13 parts of aluminum powder, 6 parts of graphite powder, 4 parts of perlite powder, 2 parts of lime powder, 6 parts of blast furnace gas ash, 2 parts of rutile titanium dioxide, 7 parts of calcium-free chromi...

Embodiment 3

[0057] The basic process of the manufacturing method of a kind of blast furnace cast steel cooling stave of the present embodiment is the same as embodiment 1, and its concrete steps are as follows:

[0058] Step 1: Treatment of cooling water pipes

[0059]Block one end of the cooling water pipe before the elbow with a wooden plug, and fill the inside of the cooling water pipe with high-temperature-resistant filler from the other end of the cooling water pipe. The high temperature resistant filler in this embodiment is composed of chromite sand, aluminum powder, graphite powder, perlite powder, lime powder, blast furnace gas ash, rutile titanium dioxide and calcium-free chromium slag, and each component is composed of the following parts by mass : 83 parts of chromite sand, 9 parts of aluminum powder, 5.5 parts of graphite powder, 3.6 parts of perlite powder, 2.5 parts of lime powder, 9 parts of blast furnace gas ash, 2.5 parts of rutile titanium dioxide, 10 parts of calcium-f...

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Abstract

The invention discloses a high temperature resistant filler for manufacturing a cast steel cooling wall for a blast furnace and belongs to the technical field of blast furnace cooling walls.The high temperature resistant filler is prepared from, by mass, 80-83 parts of chromite sand, 9-13 parts of aluminum powder, 5-6 parts of graphite powder, 3-4 parts of perlite powder, 2-3 parts of lime powder, 6-9 parts of blast furnace gas ash, 2-3 parts of rutile type titanium dioxide and 7-10 parts of calcium-free chromium slag.The high temperature resistant filler makes a cooling water pipe and a cast steel cooling wall body seamlessly fused together, the pipe wall of the cooling water pipe is not molten through under the condition that a high-temperature steel ladle is fused off, and the seamless effect of 'fusion while no melting ' is successively achieved, so that the ball passing rate of the cooling water pipe of the cast steel cooling wall is up to 100%, and the pass percent of a water pressure test of the cooling water pipe is up to 100%.

Description

[0001] The patent application of the present invention is a divisional application with application number: 2014105920452. The filing date of the original application is: October 29, 2014. The name of the invention is: a cast steel cooling stave for a blast furnace and its manufacturing method. technical field [0002] The invention belongs to the technical field of blast furnace staves, and more specifically relates to a high-temperature-resistant filler for manufacturing cast steel staves for blast furnaces. Background technique [0003] A large number of staves are used in iron-making blast furnaces. Compared with the currently widely used ductile iron staves, cast steel staves as a new generation of blast furnace staves have high elongation, high tensile strength, high melting point, and thermal shock resistance. Good performance and good overall thermal conductivity. The material of the cast iron stave base and the cooling water pipe is very different. Due to the limita...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66C21B7/10
CPCC04B35/66C21B7/10
Inventor 朱童斌庆辉李以则
Owner MAANSHAN RUNTONG HEAVY IND TECH CO LTD