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High-temperature refractory mortar and preparation method thereof

A high-temperature refractory and cement technology, which is applied in the field of building materials, can solve problems such as poor sealing of kilns, waste of refractory cement, and poor firing effect, and achieve low equipment requirements, guarantee uniformity, and high fullness Effect

Inactive Publication Date: 2020-12-01
郑州四季火耐火材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Few people pay attention to the low-temperature strength of refractory mortar. The low-temperature strength of refractory mortar mainly affects the strength of kiln stacking. If the low-temperature strength is insufficient, the kiln will be deformed after stacking, which will eventually lead to poor sealing of the kiln. The effect becomes worse
Moreover, in the case of insufficient low-temperature strength of refractory mortar, more refractory mortar is often used in order to make up for the low-temperature strength, resulting in waste of refractory mortar and increased production costs

Method used

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Examples

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Comparison scheme
Effect test

preparation example Construction

[0029] The embodiment of the present invention also provides a method for preparing the above-mentioned high-temperature refractory mortar, which includes:

[0030] S1. mixing and stirring the bauxite clinker and the bauxite raw meal to obtain the main material mixture;

[0031] S2. mixing and stirring carboxymethylcellulose, magnesium chloride, aluminum sulfate, magnesium silicate, and citric acid to obtain an auxiliary material mixture;

[0032] S3. mixing and stirring the auxiliary material mixture and water to obtain a mixed solution;

[0033] S4. Mixing and stirring the mixed solution and the main ingredients to obtain high-temperature refractory cement.

[0034] Further, the mixing and stirring of the bauxite clinker and the bauxite raw meal is carried out at a rotation speed of 50-100 rpm, and the stirring time is 3-8 minutes. The mixing of bauxite clinker and bauxite raw meal is dry mixing in an anhydrous state, mainly to allow the two to disperse evenly.

[0035] C...

Embodiment 1

[0039] This embodiment provides a kind of high-temperature refractory cement, which comprises:

[0040] 50 parts of bauxite, 1.7 parts of carboxymethyl cellulose, 15 parts of magnesium chloride, 1 part of aluminum sulfate, 1 part of magnesium silicate, 1.2 parts of citric acid, 8 parts of water;

[0041] Among them, bauxite includes 35% of bauxite clinker and 65% of bauxite raw meal.

[0042] Its preparation method is as follows:

[0043] S1. Stir the bauxite clinker and bauxite raw meal at 100 rpm for 3 min to obtain the main material mixture.

[0044] S2. Stir carboxymethyl cellulose, magnesium chloride, aluminum sulfate, magnesium silicate, and citric acid at a speed of 100 rpm for 5 min to obtain a mixture of auxiliary materials.

[0045] S3. Stir the auxiliary material mixture and water for 30 min at a speed of 1500 rpm to obtain a mixed solution;

[0046] S4. Stir the mixed solution and main ingredients at a speed of 1500 rpm for 30 min to obtain high-temperature refr...

Embodiment 2

[0048] This embodiment provides a kind of high-temperature refractory cement, which comprises:

[0049] 75 parts of bauxite, 0.4 parts of carboxymethyl cellulose, 30 parts of magnesium chloride, 0.1 part of aluminum sulfate, 0.1 part of magnesium silicate, 2.6 parts of citric acid, 15 parts of water;

[0050] Among them, bauxite includes bauxite clinker 45% and bauxite raw meal 55%.

[0051] Its preparation method is as follows:

[0052] S1. Stir the bauxite clinker and bauxite raw meal at a speed of 50 rpm for 8 min to obtain a main material mixture.

[0053] S2. Stir carboxymethyl cellulose, magnesium chloride, aluminum sulfate, magnesium silicate, and citric acid at a speed of 50 rpm for 10 min to obtain a mixture of auxiliary materials.

[0054] S3. Stir the auxiliary material mixture and water for 40 min at a speed of 800 rpm to obtain a mixed solution;

[0055] S4. Stir the mixed solution and the main ingredients at a speed of 600 rpm for 50 min to obtain high-tempera...

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Abstract

The invention relates to the field of building materials, in particular to high-temperature refractory mortar. The high-temperature refractory mortar takes bauxite as a main material and carboxymethylcellulose, magnesium chloride, aluminum sulfate, magnesium silicate, citric acid and the like as auxiliary materials; through reasonable matching of the multiple raw materials, the high-temperature refractory mortar has better low-temperature strength; and when the high-temperature refractory mortar is used for kiln building, mortar joints are small, high fullness is achieved, and the usage amount of the refractory mortar is reduced. According to a preparation method of the high-temperature refractory mortar, step-by-step mixing is carried out according to the characteristics of different rawmaterials, so uniformity among the raw materials is fully guaranteed. The preparation method is simple to operate, has low requirements on equipment and can be quickly and efficiently used for large-scale production of the high-temperature refractory mortar.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a high-temperature refractory mortar and a preparation method thereof. Background technique [0002] High-temperature refractory mortar is mainly formulated with high-quality refractory powder, high-strength temperature-resistant chemical binder and additives. It is suitable for kiln masonry that requires small mortar joints, good sealing, and high bonding strength. In the prior art, the improvement of high-temperature refractory cement mainly focuses on improving its high-temperature performance, that is, how to withstand burning at higher temperatures. Few people pay attention to the low-temperature strength of refractory mortar. The low-temperature strength of refractory mortar mainly affects the strength of kiln stacking. If the low-temperature strength is insufficient, the kiln will be deformed after stacking, which will eventually lead to poor sealing of the kiln. less ef...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B35/10C04B35/636C04B35/632
CPCC04B35/66C04B35/10C04B35/6365C04B35/632C04B2235/444C04B2235/448C04B2235/3445C04B2235/96
Inventor 裴海法
Owner 郑州四季火耐火材料有限公司