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Method for preparing guide rod casting material for floating plug

A castable and guide rod technology, applied in the field of castables, can solve the problems of shortening the demoulding and curing time of the guide rod, insufficient high temperature resistance strength, long demoulding and curing time of the guide rod, etc., so as to shorten the demoulding curing time and achieve high temperature resistance. High strength and the effect of improving slag blocking efficiency

Inactive Publication Date: 2014-07-23
WUXI YICHEN MOLD TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the problems of long demoulding maintenance time and insufficient high temperature resistance strength of the guide rod in the prior art, and provide a preparation method of the guide rod castable for the slag stopper, using the guide rod prepared by the present invention to cast material, which can greatly shorten the demoulding and curing time of the guide rod, and the refractory layer of the guide rod is not easy to be damaged during the process of handling, installation and use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A castable for the guide rod of the slag stopper in this embodiment includes a castable base material and a binder, and the components of the castable base material are composed of the following parts by mass: 62 kg of bauxite, 35 kg of 6 kg of aluminum bricks, 7 kg of blast furnace gas ash, 5 kg of calcium-free chromium slag; the components of the binder are composed of the following parts by mass: 33 kg of phenolic resin, 10 kg of furfuryl alcohol resin, 7 kg of diphenylmethane diisocyanate, 12 kg of urea-formaldehyde resin, 1kg of titanium dioxide, 2.5kg of borax, 5kg of silicon carbide, 0.8kg of neodymium oxide, 0.3kg of yttrium oxide, and 1.2kg of zirconia; the mass ratio of the castable base material to the binder is 100:1.8.

[0029] A method for preparing a castable for a guide rod of a slag stopper according to this embodiment, the specific steps are:

[0030] Step 1. Preparation of castable base material

[0031] Weigh 62 kg of bauxite, 35 kg of magnesia, 6 k...

Embodiment 2

[0040]A castable for the guide rod of the slag stopper in this embodiment includes a castable base material and a binder. The components of the castable base material are composed of the following parts by mass: bauxite 64 kg, magnesia 33 kg, waste 7 kg of aluminum bricks, 6 kg of blast furnace gas ash, and 6 kg of calcium-free chromium slag; the components of the binder are composed of the following parts by mass: 30 kg of phenolic resin, 12 kg of furfuryl alcohol resin, 5 kg of diphenylmethane diisocyanate, 14 kg of urea-formaldehyde resin, 1kg of titanium dioxide, 2kg of borax, 6kg of silicon carbide, 0.5kg of neodymium oxide, 0.3kg of yttrium oxide, and 1.5kg of zirconia; the mass ratio of the castable base material to the binder is 100:1.5.

[0041] A method for preparing a castable for a guide rod of a slag stopper according to this embodiment, the specific steps are:

[0042] Step 1. Preparation of castable base material

[0043] Weigh 64 kg of bauxite, 33 kg of magnes...

Embodiment 3

[0052] A castable for the guide rod of the slag stopper in this embodiment includes a castable base material and a binder, and the components of the castable base material are composed of the following parts by mass: 60 kg of bauxite, 36 kg of 5 kg of aluminum bricks, 8 kg of blast furnace gas ash, 4 kg of calcium-free chromium slag; the components of the binder are composed of the following parts by mass: 35 kg of phenolic resin, 8 kg of furfuryl alcohol resin, 9 kg of diphenylmethane diisocyanate, 10 kg of urea-formaldehyde resin, 1kg of titanium dioxide, 3kg of borax, 4kg of silicon carbide, 1kg of neodymium oxide, 0.3kg of yttrium oxide, and 1kg of zirconia; the mass ratio of the castable base material to the binder is 100:2.0.

[0053] A method for preparing a castable for a guide rod of a slag stopper according to this embodiment, the specific steps are:

[0054] Step 1. Preparation of castable base material

[0055] Weigh 60 kg of bauxite, 36 kg of magnesia, 5 kg of wa...

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Abstract

The invention discloses a method for preparing a guide rod casting material for a floating plug, and belongs to the technical field of casting materials. The method comprises the following steps: (1) weighing 60-64 parts of bauxite, 33-36 parts of magnesia, 5-7 parts of waste high alumina bricks, 6-8 parts of blast furnace gas dust and 4-6 parts of calcium-free chromium slag in parts by mass, and stirring for 20 minutes to obtain a base casting material; (2) preparing a bonding agent from the following components in parts by weight: 30-35 parts of phenolic resin, 8-12 parts of furfuryl alcohol resin, 5-9 parts of diphenyl methane diisocyanate, 10-14 parts of urea formaldehyde resin, 1 part of titanium dioxide, 2-3 parts of borax, 4-6 parts of silicon carbide, 0.5-1 part of neodymium oxide, 0.3 part of yttrium oxide and 1-1.5 parts of zirconium oxide; (3) mixing the base casting material and the bonding agent at a mass ratio of 100:(1.5-2.0) for 40 minutes to obtain the guide rod casting material. By adopting the method, wastes are recycled, so that the production cost is reduced, and the demolding and maintenance time of a guide rod is greatly shortened.

Description

technical field [0001] The invention relates to the technical field of castables, in particular to a method for preparing castables for guide rods of slag stoppers. Background technique [0002] At the end of BOF smelting, all the slag floats on the surface of molten steel. During the tapping process of the BOF, especially after most of the molten steel is discharged, the molten steel will form a strong eddy current at the tapping port, and the slag will inevitably follow the Molten steel flows out. Since slag contains a large amount of harmful components to molten steel, and these harmful components will return or dissolve into molten steel at any time, affecting the purity of molten steel and the quality of the final steel product. At the same time, a large amount of slag will also form different The form consumes the alloy, which reduces the alloy yield in the molten steel refining process. For this reason, iron and steel enterprises at home and abroad have adopted conv...

Claims

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Application Information

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IPC IPC(8): C04B35/66C04B35/63
Inventor 钱根来李康魏鑫
Owner WUXI YICHEN MOLD TECH