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A kind of production method and application of calcium aluminate cement clinker and alumina cement clinker

A technology of calcium aluminate cement and production method, applied in the field of preparation of calcium aluminate cement clinker or aluminate binder, can solve the problems of poor quality, inhomogeneous and stable ore phase of calcium aluminate cement and the like, and achieve short time interval , The effect of reducing the fluctuation of the sintering process and the long initial setting time

Active Publication Date: 2022-01-14
项金生
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in actual production, it was found that the mineral phase of the obtained calcium aluminate cement was not uniform and stable, and the quality was poor.

Method used

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  • A kind of production method and application of calcium aluminate cement clinker and alumina cement clinker
  • A kind of production method and application of calcium aluminate cement clinker and alumina cement clinker
  • A kind of production method and application of calcium aluminate cement clinker and alumina cement clinker

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Example 1 CA-80 series calcium aluminate cement clinker

[0063] The present embodiment provides a production method of CA-80 series calcium aluminate cement, comprising the following steps:

[0064] (1) Wet ball milling mud:

[0065] Add 80kg of alumina, 20kg of calcium oxide and 100kg of water into a wet ball mill, and grind for 15 hours to obtain a slurry with a mesh size of 200-400 and a solid content of 78%-80%.

[0066] (2) Homogenization treatment:

[0067] The obtained slurry is input into the mud pool for filtration and homogenization treatment, specifically: use multiple mud pools to store and filter the mud, and simultaneously transport the filtered mud to the filter cloth machine through the plunger pump, and homogenize and mix while transporting;

[0068] After the homogenization treatment, the moisture content of the slurry is controlled at about 45%, and the uniformity reaches a difference of less than 5% per cubic centimeter of moisture content;

[00...

Embodiment 2

[0081] Example 2 CA-80 series calcium aluminate cement clinker

[0082] The present embodiment provides a production method of CA-80 series calcium aluminate cement, comprising the following steps:

[0083] (1) Wet ball milling mud:

[0084] Put 78kg of alumina, 20kg of calcium oxide, and 90kg of water into a wet ball mill and grind for 16 hours to obtain 200-400 mesh slurry with a solid content of 75%.

[0085] (2) Homogenization treatment:

[0086] The obtained slurry is input into the mud pool for filtration and homogenization treatment, specifically: use multiple mud pools to store and filter the mud, and simultaneously transport the filtered mud to the filter cloth machine through the plunger pump, and homogenize and mix while transporting;

[0087] After the homogenization treatment, the moisture content of the slurry is controlled at about 45%, and the uniformity reaches a difference of less than 5% per cubic centimeter of moisture content;

[0088] Among them, the p...

Embodiment 3

[0100] Example 3 CA-80 series calcium aluminate cement clinker

[0101] The present embodiment provides a production method of CA-80 series calcium aluminate cement, comprising the following steps:

[0102] (1) Wet ball milling mud:

[0103] Add 79kg of alumina, 20kg of calcium oxide, and 90kg of water into a wet ball mill and grind for 24 hours to obtain a 200-400 mesh slurry with a solid content of about 70%.

[0104] (2) Homogenization treatment:

[0105] The obtained slurry is input into the mud pool for filtration and homogenization treatment, specifically: use multiple mud pools to store and filter the mud, and simultaneously transport the filtered mud to the filter cloth machine through the plunger pump, and homogenize and mix while transporting;

[0106] After the homogenization treatment, the moisture content of the slurry is controlled at about 45%, and the uniformity reaches a difference of less than 5% per cubic centimeter of moisture content;

[0107] Among the...

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Abstract

The invention belongs to the technical field of preparation of calcium aluminate cement clinker or aluminate binder, and in particular relates to a production method and application of calcium aluminate cement clinker and alumina cement clinker. The production method includes: taking the formed body obtained by wet pulping and extrusion as raw material, and sintering it through a one-stage rotary kiln or a two-stage rotary kiln; wherein, the diameter of the formed body along the diameter of the rotary kiln cylinder The length range in the direction is between 1-80mm; the uniformity of the molded body is that the difference of moisture content per cubic centimeter is less than 0.5%; the temperature field of the rotary kiln is: the temperature of the feeding preheating section is 100-450°C , The temperature of the middle soaking section is 500-800°C, and the temperature of the outlet firing section is 1250-1700°C. Adopting the production process of the present invention obtains a high-quality cement product with uniform mineral phase and stability, which has finer fineness, higher bulk density, less water demand, and a shorter time interval between initial setting and final setting. Higher flexural strength after application.

Description

technical field [0001] The invention belongs to the technical field of preparation of calcium aluminate cement clinker or aluminate binder, and in particular relates to a production method and application of calcium aluminate cement clinker and alumina cement clinker. Background technique [0002] The castable is composed of aggregate and matrix powder binder, and CA-80 calcium aluminate cement clinker is one of the commonly used powder binders. At present, there are three main preparation techniques for CA-80 calcium aluminate cement clinker: one is the electric melting method; the other is the rotary kiln burning powder method; industrial production process. [0003] The rotary kiln powder burning method is to mix and grind industrial alumina, calcium oxide or calcium carbonate in proportion, and burn them in a rotary kiln to obtain calcium aluminate cement. However, in actual production, it was found that the mineral phase of the obtained calcium aluminate cement was no...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B7/32C04B7/36C04B7/44C04B7/40C04B7/38
CPCC04B7/32C04B7/36C04B7/44C04B7/40C04B7/38
Inventor 项金生
Owner 项金生
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