Binder for amorphous basic refractory material, and preparation technology thereof

A technology of refractory materials and binders, applied in the field of binders for amorphous basic refractory materials and its preparation, can solve the problems of large influence of water addition on construction performance, reduced thermal shock resistance, slow strength development, etc., and achieve improvement Effects of thermal shock resistance and erosion resistance, improvement of construction performance and high temperature performance

Inactive Publication Date: 2019-06-25
湖北斯曼新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the use of excessive silicon micropowder will increase the glass phase content in the castable, resulting in an increase in the brittleness of the sample, which reduces the thermal shock resistance. At the same time, the early strength of the magnesium-silicon-hydrated castable is developed slowly, and the construction performance is affected. The temperature and the amount of water added have a great influence

Method used

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  • Binder for amorphous basic refractory material, and preparation technology thereof

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Comparison scheme
Effect test

Embodiment 1

[0021] The present invention proposes a binder for amorphous basic refractory materials, whose raw materials are formulated as follows by weight: 100 parts of magnesium-based powder, 20 parts of silicon dioxide powder, and 0.1 part of activator.

[0022] The formulation by weight of the activator is as follows: 30 parts of polycarboxylic acid, 20 parts of benzenesulfonate, 5 parts of metasilicate, and 5 parts of organic weak acid.

[0023] The magnesium-based powder is specifically a powder with a magnesium oxide content>95%. The magnesium-based powder is one or a mixture of magnesium oxide fine powder and lightly burned magnesia fine powder. The magnesium-based powder and The particle size of silica powder should be less than 8mm.

[0024] The present invention also provides a preparation process of a binder for amorphous basic refractories, comprising the following steps:

[0025] S1. Select the ball mill as an auxiliary tool, and clean the inside of the ball mill several t...

Embodiment 2

[0028] The present invention proposes a binder for amorphous basic refractory materials, whose raw materials are formulated as follows by weight: 200 parts of magnesium-based powder, 40 parts of silicon dioxide powder, and 1 part of activator.

[0029] The formulation by weight of the activator is as follows: 40 parts of polycarboxylic acid, 30 parts of benzenesulfonate, 8 parts of metasilicate, and 8 parts of organic weak acid.

[0030] The magnesium-based powder is specifically a powder with a magnesium oxide content>95%. The magnesium-based powder is one or a mixture of magnesium oxide fine powder and lightly burned magnesia fine powder. The magnesium-based powder and The particle size of silica powder should be less than 8mm.

[0031] The present invention also provides a preparation process of a binder for amorphous basic refractories, comprising the following steps:

[0032] S1. Select the ball mill as an auxiliary tool, and clean the inside of the ball mill several tim...

Embodiment 3

[0035] The present invention proposes a binder for amorphous basic refractory materials, whose raw materials are formulated as follows by weight: 300 parts of magnesium-based powder, 45 parts of silicon dioxide powder, and 1.5 parts of activator.

[0036] The formulation by weight of the activator is as follows: 45 parts of polycarboxylic acid, 35 parts of benzenesulfonate, 10 parts of metasilicate, and 10 parts of organic weak acid.

[0037] The magnesium-based powder is specifically a powder with a magnesium oxide content>95%. The magnesium-based powder is one or a mixture of magnesium oxide fine powder and lightly burned magnesia fine powder. The magnesium-based powder and The particle size of silica powder should be less than 8mm.

[0038] The present invention also provides a preparation process of a binder for amorphous basic refractories, comprising the following steps:

[0039] S1. Select the ball mill as an auxiliary tool, and clean the inside of the ball mill severa...

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Abstract

The invention discloses a binder for an amorphous basic refractory material. Raw materials of the binder comprise, by weight, 100-500 parts of magnesium-based powder, 20-70 parts of silica powder and0.1-3 parts of an activator. The binder has the following advantages: 1, the binder has a flexible and controllable setting time, so a basic castable using the binder meets the construction time requirement of 30-150 min; 2, the binder prepared in the invention has a fast strength development at 5-50 DEG C, and can be constructed at a low temperature without worrying about a mold release problem caused by difficult setting; and 3, the binder has high-purity ceramic combination with the basic refractory material at a high temperature, so the thermal shock resistance and the erosion resistance of the refractory material are improved.

Description

technical field [0001] The invention relates to the technical field of binder preparation, in particular to a binder for amorphous basic refractory materials and a preparation process thereof. Background technique [0002] Magnesium castables have the advantages of strong resistance to alkaline slag erosion, high refractoriness, and no pollution to molten steel. They have broad application prospects in the iron and steel metallurgy industry, especially in the production of clean steel. However, due to the large thermal expansion coefficient of the magnesia raw material (13.5×10-6°C -1 ), it is easy to generate a large thermal stress inside the material during the baking process, resulting in cracking of the material, poor peeling resistance, and affecting the high-temperature performance of the material. [0003] At present, the binder of magnesia castables is generally a small amount of silicon micropowder, which has the characteristics of large specific surface area and h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/043
Inventor 李文刘学新熊明继陈士华宋文喜
Owner 湖北斯曼新材料股份有限公司
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