A kind of magnesia binder and the method using magnesia binder to prepare refractory material

A technology of magnesia binder and refractory material, which is applied in the field of magnesia binder and the preparation of refractory materials using magnesia binder, which can solve the problems of low strength and achieve the effects of improving the bonding strength, expanding the application range and prolonging the storage time

Active Publication Date: 2022-06-03
ZHONGMIN CHIYUAN IND
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Traditional magnesia binders simply use the hydration reaction between light-burned magnesia and water to generate magnesium hydroxide and form the bonding strength. Only flaky magnesium hydroxide can be produced under this condition, and the strength of the sample is the lowest when the bonded phase is flaky, which is 52.32MPa
Therefore, it is impossible to effectively form a mosaic structure inside the material to meet the actual use requirements.

Method used

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  • A kind of magnesia binder and the method using magnesia binder to prepare refractory material
  • A kind of magnesia binder and the method using magnesia binder to prepare refractory material
  • A kind of magnesia binder and the method using magnesia binder to prepare refractory material

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Embodiment 1-6

[0026] In this embodiment, corundum castable refractory material is used, and magnesium binding agent is used as the binding agent. The composition of raw materials is shown in Table 1.

[0027] Table 1 Raw material ratio composition

[0028]

[0029] Weigh according to the raw material ratio shown in Table 1, and the total weight of the ratio is 1000g. Put the above-mentioned raw materials into the mixer and stir evenly, then add 70 g of water, continue stirring for 10 minutes to form a slurry, and then inject the slurry into the mold to form. After molding, the mold is naturally cured for 24 hours and then demolded. After demolding, it is continued to be cured for 24 hours, and then baked in an oven at 200 ° C for 24 hours. After drying, the compressive strength of the samples was measured according to GB / T5072-2008 "Test method for compressive strength of refractory materials at room temperature", and the microstructure of the bonded phase of the cross-section of the s...

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Abstract

The invention provides a magnesium binder and a method for preparing a refractory material using the magnesium binder. The invention uses magnesium oxide, magnesium oleate and methylmalonic acid as binder components, and adds 0.10-0.15% of oil Magnesium acid and methylmalonic acid and the ratio of the two are set to 1 / 1‑2 / 1 to control the microstructure of the magnesium hydroxide product of the magnesium oxide hydration reaction, and at the same time prepare a refractory by using a magnesium binder The implementation process of the material makes the magnesia binder form a mosaic structure inside the refractory material, which greatly improves the strength of the magnesia binder and the refractory material bonding phase. The microstructure morphology of the sample with the magnesia binder added is cone Shape, its compressive strength can reach 60-70MPa. The magnesium binder of the present invention and its application method are simple, and the preparation cost is low.

Description

technical field [0001] The invention relates to the technical field of refractory materials and their preparation, in particular to a magnesia binder and a method for preparing a refractory material by using the magnesia binder, which can be used to improve the bonding strength of the magnesia binder and the refractory material. Background technique [0002] Magnesium oxide is widely used as a binder in the fields of refractory materials, structural ceramics and building materials. The strength of the magnesium oxide binder is mainly formed by the hydration reaction of magnesium oxide to form a magnesium hydroxide phase, and the strength of the magnesium oxide binder depends on the microstructure of the magnesium oxide after the hydration process in the preparation process. The traditional magnesia binder only uses the hydration reaction between lightly burned magnesia and water to generate magnesium hydroxide and form the bond strength. However, due to the simple and single...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66C04B35/632C04B35/63C04B35/101
CPCC04B35/101C04B35/632C04B35/6303C04B35/6325C04B35/66C04B2235/3418C04B2235/96C04B2235/9607Y02P40/60
Inventor 郑岐段守龙王延哲吴东洋秦鹏
Owner ZHONGMIN CHIYUAN IND
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