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A kind of magnesia-iron-aluminum spinel kiln mouth prefabricated part

A technology of magnesium-iron-aluminum spinel and iron-aluminum spinel, which is applied in the field of magnesium-iron-aluminum spinel kiln mouth prefabrication, can solve problems such as short service life of the kiln mouth, castable segregation, castable shedding, etc. Achieve good economic benefits and market application prospects, improve high temperature stability, and improve product quality

Active Publication Date: 2017-09-22
长兴兴鹰新型耐火建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, alkaline raw materials affect the fluidity of castables, which are prone to rapid setting and cause great inconvenience to construction. For example, a cement kiln mouth castable disclosed by the announcement number CN104355646A (2015-02-18), although it can Reduce the problems of many pores and uneven distribution of pores, but the shedding phenomenon of castables has not improved, and the service life of the kiln mouth is still not long
In addition, traditional vibration construction may also cause problems such as castable segregation

Method used

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  • A kind of magnesia-iron-aluminum spinel kiln mouth prefabricated part

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A magnesia-iron-aluminum spinel kiln mouth prefabricated part, the preparation method is as follows:

[0040] (1) Weigh each component according to formula 1, add them into the stirring device and stir evenly to obtain the mixing material A;

[0041] (2) Add a dispersant and water to the mixing material A in the step (1), and control the amount of water according to the flow value of the overall mixing material to obtain the mixing material B;

[0042] (3) Add the mixture B in the step (2) into the mold for making the kiln mouth prefabricated part, and automatically level it until the surface is smooth, and obtain the sample kiln mouth prefabricated part;

[0043] (4) Place the sample kiln mouth prefabricated part and the mold in the step (3) in the air, let it stand for 48 hours, and then perform demoulding treatment to obtain the kiln mouth prefabricated part 1;

[0044] (5) The kiln mouth prefabricated part 1 mentioned in the step (4) is naturally cured for 72 hours...

Embodiment 2

[0047] A magnesia-iron-aluminum spinel kiln mouth prefabricated part, the preparation method is as follows:

[0048] (1) Weigh each component according to formula 2, add them into the stirring device and stir evenly to obtain the mixing material A;

[0049] (2) Add a dispersant and water to the mixing material A in the step (1), and control the amount of water according to the flow value of the overall mixing material to obtain the mixing material B;

[0050] (3) Add the mixture B in the step (2) into the mold for making the kiln mouth prefabricated part, and automatically level it until the surface is smooth, and obtain the sample kiln mouth prefabricated part;

[0051] (4) Place the sample kiln mouth prefabricated part and the mold in the step (3) in the air, let it stand for 40 hours, and then perform demoulding treatment to obtain the kiln mouth prefabricated part 1;

[0052] (5) The kiln mouth prefabricated part 1 mentioned in the step (4) is naturally cured for 56 hours...

Embodiment 3

[0055] A magnesia-iron-aluminum spinel kiln mouth prefabricated part, the preparation method is as follows:

[0056] (1) Weigh each component according to Formula 3, add them into the stirring device and stir evenly to obtain the mixing material A;

[0057] (2) Add a dispersant and water to the mixing material A in the step (1), and control the amount of water according to the flow value of the overall mixing material to obtain the mixing material B;

[0058] (3) Add the mixture B in the step (2) into the mold for making the kiln mouth prefabricated part, and automatically level it until the surface is smooth, and obtain the sample kiln mouth prefabricated part;

[0059] (4) Place the sample kiln mouth prefabricated part and the mold in the step (3) in the air, let it stand for 36 hours, and then perform demoulding treatment to obtain the kiln mouth prefabricated part 1;

[0060] (5) Prefabricated kiln mouth prefabricated part 1 described in step (4) is naturally maintained f...

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Abstract

The present invention involves a magnesium iron aluminum spine -spike kiln prefabricated piece. It includes the following component raw materials and weights: electric magnesium aluminum spike granules: 15‑25 copies of 5‑8mm;20 copies; 5‑15 copies of 1‑3mm; 5‑15 copies of 0‑1mm; electric melting iron aluminum spinel granules: 10‑20 part of 5‑8mm; 5‑15 copies of 3‑5mm; 1‑ 1‑3mm of 5‑10 copies; 5‑10 copies of 0‑1mm; carbonic acid 锆 0‑1mm: 3‑5 copies; 0‑1mm silicon carbide: 3‑5 copies; silicon microfan of 200 mesh sieve: 2‑3 copies, alumina microfimpe: 2‑8 parts; the present invention adds high -end raw materials such as magnesium aluminum spinel, iron aluminum spinel spinels in the formula, so that the product has good high temperature resistance, alkali resistance, heat shock, etc.The characteristic, which is composed of granularity, to achieve the self -current mode of the product and avoid the construction problems brought by alkaline pouring.

Description

technical field [0001] The invention relates to the field of refractory materials, in particular to a magnesium-iron-aluminum spinel kiln mouth prefabricated part. Background technique [0002] At present, most of the kiln casting materials on the market use corundum or alkaline raw materials, but corundum has a relatively large thermal expansion coefficient and poor thermal shock stability. Corundum changes from α-phase corundum to β-phase corundum in the alkaline atmosphere of cement kiln. It will cause volume expansion, easily cause structural damage, and greatly shorten the life of the kiln mouth. Although the use of alkaline raw materials can resist the alkaline atmosphere of the cement kiln, it is more suitable for the use environment of the cement kiln mouth. However, alkaline raw materials affect the fluidity of castables, which are prone to rapid setting and cause great inconvenience to construction. For example, a cement kiln mouth castable disclosed by the announ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66C04B35/44
Inventor 王强许高山国强
Owner 长兴兴鹰新型耐火建材有限公司
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