Dry high temperature resistant furnace lining material and preparation method and application thereof

A technology of high temperature resistance and furnace lining, which is applied in the field of dry high temperature resistant furnace lining and its preparation, can solve the problems of reducing the refractoriness of furnace lining materials, not being able to be well applied, and the raw material of quartz sand being impure, etc., to achieve enhanced wear resistance and operation Stable and easy to expand and promote the effect

Pending Publication Date: 2019-03-22
云南永昌硅业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing dry-type high-temperature-resistant furnace linings are made of synthetic magnesia, fused magnesia and other ingredients, but this kind of furnace lining is not suitable for silicon smelting melting furnaces
[0003] In the prior art, there is also a refractory composite lining structure with thicker and better heat preservation, but in actual use, it is found that when this lining is applied to the silicon smelting melting furnace, the lining will also frequently have problems
At present, there are related reports on the preparation of high-temperature-resistant furnace linings with quartz sand furnace materials, but there are many problems. Greatly reduced
In addition, most of the lining materials for quartz sand furnaces fail to adopt suitable particle size and scientific composition, so that many existing lining materials for quartz sand furnaces will have many problems after being used for a few times.
Moreover, when the existing melting furnace lining is applied to silicon smelting, the presence of high-strength silicon slag also makes its service life shorter

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A dry-type high-temperature resistant furnace lining comprises the following raw materials in parts by weight: 97 parts of quartz sand and 3 parts of boric acid.

[0035] The quartz sand is mixed quartz sand with different particle sizes, specifically including 25% of 170-mesh quartz sand, 8% of 8-mesh quartz sand, 20% of 12-mesh quartz sand, 20% of 25-mesh quartz sand, 15% 40 mesh quartz sand, 12% 120 mesh quartz sand.

[0036] A method for manufacturing a dry-type high-temperature-resistant furnace lining, comprising the following steps:

[0037] 1) The quartz sand is first subjected to impurity removal treatment. Specifically, the quartz sand is first pickled for 5 minutes in an ultrasonic and microwave composite field, and then washed with water for one time. Finally, the cleaned quartz sand is dried and set aside; Acid leaching is soaked in aqua regia;

[0038] 2) Take each raw material according to the proportion of the formula, mix it well in a wear-resistant c...

Embodiment 2

[0045] A dry high temperature resistant furnace lining material, comprising the following raw materials in parts by weight: 99.5 parts of quartz sand, 0.5 part of boric acid, 1 part of sintering agent, 0.5 part of explosion-proof agent, and 2 parts of wear-resistant agent.

[0046] The quartz sand is mixed quartz sand with different particle sizes, specifically including 15% of 200-mesh quartz sand, 4% of 10-mesh quartz sand, 30% of 20-mesh quartz sand, 30% of 35-mesh quartz sand, 10% 100 mesh quartz sand, 11% 140 mesh quartz sand.

[0047] The sintering agent is SiC powder. The anti-explosion agent is metal aluminum powder. The anti-wear agent is zirconium dioxide.

[0048] A method for manufacturing a dry-type high-temperature-resistant furnace lining, comprising the following steps:

[0049] 1) The quartz sand is first subjected to impurity removal treatment, specifically acid leaching the quartz sand for 30 minutes in an ultrasonic and microwave composite field, and the...

Embodiment 3

[0057] A dry high temperature resistant furnace lining material, comprising the following raw materials in parts by weight: 98 parts of quartz sand, 2 parts of boric acid, 3 parts of sintering agent, 2 parts of explosion-proof agent, 5 parts of wear-resistant agent, and 0.1 part of sodium tripolyphosphate.

[0058]The quartz sand is mixed quartz sand with different particle sizes, specifically including 20% ​​of 170-mesh quartz sand, 6% of 10-mesh quartz sand, 25% of 14-mesh quartz sand, 29% of 30-mesh quartz sand, 12% 60 mesh quartz sand and 8% 120 mesh quartz sand.

[0059] The sintering agent is Y 2 o 3 pink. The anti-explosion agent is an anti-explosion fiber. The anti-wear agent is zirconium dioxide.

[0060] A method for manufacturing a dry-type high-temperature-resistant furnace lining, comprising the following steps:

[0061] 1) The quartz sand is first subjected to impurity removal treatment. Specifically, the quartz sand is acid-leached for 10 minutes in an ultr...

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PUM

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Abstract

The invention discloses a dry high temperature resistant furnace lining material and a preparation method and application thereof. The dry high temperature resistant furnace lining material comprisesthe following raw materials in parts by weight: 97-99.5 parts of quartz sand and 0.5-3 parts of boric acid. According to the high temperature resistance property of the quartz sand, an appropriate amount of boric acid is added according to a different particle size ratio, components are further added according to the situation, uniform mixing is carried out, and a furnace lining is constructed; and the obtained dry high temperature furnace lining has significant thermal shock resistance, enhanced refractory properties and wear resistance. Through adding the boric acid, the mixing of the quartzsand with the other components is more uniform; and sodium tripolyphosphate can be matched to effectively promote the smoothness of the lining and enhance the telescopic strength of the lining.

Description

technical field [0001] The invention belongs to the technical field of high-temperature-resistant furnace linings, and in particular relates to a dry-type high-temperature-resistant furnace lining material and its preparation method and application. Background technique [0002] Furnace linings are the walls of furnaces used to smelt metals. Due to the different metals smelted by electric furnaces, the existing furnace linings have different internal working conditions, and the materials and properties of the refractory linings used are also different. Most of the existing dry-type high-temperature-resistant furnace linings are made of synthetic magnesia, fused magnesia and other ingredients, but such furnace linings are not suitable for silicon smelting melting furnaces. [0003] In the prior art, there is also a refractory composite lining structure with thicker and better heat preservation. However, in actual use, it is found that when this lining is applied to the silic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B35/14
CPCC04B35/14C04B35/66C04B2235/3409
Inventor 王世宇毕红兴文建华卢国洪任承伟徐加雄张忠益杨贵明康万福徐福昌梅志能张藜
Owner 云南永昌硅业股份有限公司
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