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A kind of anti-skinning castable for cement kiln and preparation method thereof

An anti-skinning and cement kiln technology, applied in the field of refractory castables, can solve the problems of easy skinning, low strength of refractory castables, and poor corrosion resistance, and achieves the effects of increasing mobility, good construction performance, and reducing mud viscosity.

Active Publication Date: 2021-01-29
ANHUI RUITAI NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the existing refractory castables are low in strength, not resistant to erosion, especially prone to crusting, and are difficult to be used in cement kiln parts such as cement kiln decomposition furnaces and smoke chambers

Method used

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  • A kind of anti-skinning castable for cement kiln and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0034] An anti-skinning pouring material for cement kiln, the raw materials include 21% of calcium dialuminate, 19% of alumina micropowder or bauxite micropowder, 4% of pure calcium aluminate cement, and the balance is water.

Embodiment 2

[0036] An anti-skinning pouring material for cement kiln, its raw materials include 58% of calcium dialuminate, 5% of alumina micropowder or bauxite micropowder, 20% of pure calcium aluminate cement, and the balance is water.

[0037] In calcium dialuminate, the weight ratio of calcium dialuminate with a particle size of 1-0.088mm to calcium dialuminate <0.088mm is 22:28.

Embodiment 3

[0039] An anti-skinning castable for cement kiln, the raw materials include 23% of calcium dialuminate, 17% of alumina micropowder or bauxite micropowder, 5% of pure calcium aluminate cement, and the particle size is 5-1mm. Low alumina mullite 59%, polycarboxylate superplasticizer 0.1%, sodium polyacrylate 0.5%, citric acid 0.01%, and the balance is water.

[0040] In low alumina mullite, the weight ratio of 5-3mm low alumina mullite to 3-1mm low alumina mullite is 1:30.

[0041] In calcium dialuminate, the weight ratio of 5-3mm calcium dialuminate, 3-1mm calcium dialuminate, 1-0.088mm calcium dialuminate and <0.088mm calcium dialuminate is 1:28:1:29.

[0042] The particle size of alumina fine powder or alumina fine powder is less than 0.020mm.

[0043] The preparation method of the anti-skinning castable for the cement kiln comprises the following steps:

[0044] 1. Proportioning the raw materials and mixing them evenly to obtain the finished product;

[0045] II. Add wate...

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Abstract

The invention discloses an anti-crusting castable for cement kilns, and a preparation method of the anti-crusting castable. The anti-crusting castable is prepared from the following raw materials by weight percent: 20-60% of calcium dialuminate, 3-20% of alumina micropowder or bauxite micropowder, 2-20% of pure calcium aluminate cement and the balance of water. The anti-crusting castable is also prepared from low-aluminum mullite with particle size of 5-1mm, and the weight of the low-aluminum mullite accounts for 0-60% of that of the raw materials. The invention also discloses the preparationmethod of the anti-crusting castable; the method comprises the following steps: blending the raw materials according to a ratio, and evenly mixing to obtain a finished product; adding water into the finished product and stirring, pouring for forming, curing, drying, and baking. The anti-crusting castable for cement kilns and the preparation method of the anti-crusting castable have the characteristics of being good in construction performance, rapid in hardening, high in strength, corrosion-resistant and good in anti-crusting property; the anti-crusting castable is used for easy-to-crust partssuch as the cement kilns, decomposing furnaces and smoke chambers.

Description

technical field [0001] The invention relates to the technical field of refractory castables, in particular to an anti-skinning castable for cement kilns and a preparation method thereof. Background technique [0002] There are many kinds of unshaped refractories, which can be divided into concrete, castables, plastics, ramming materials, gunning materials, projection materials, smearing materials, dry ramming materials, fire clay materials, various Furnace repair materials (bitumen combined with large surface repair materials, Martin sand, etc.) also belong to the unshaped list. [0003] Refractory castables are granular and powdery materials made of refractory substances, and are composed of a certain amount of binder and water. It has high fluidity, is suitable for pouring construction, and is an unshaped refractory material that can be hardened without heating. It is composed of refractory aggregate, powder, binder, admixture, water or other liquid materials. Generally...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66
CPCC04B35/66C04B2235/96C04B2235/9607C04B2235/9692
Inventor 董舜杰陈雪峰万志华
Owner ANHUI RUITAI NEW MATERIALS TECH