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Aluminate cement and preparation method thereof

A technology of aluminate cement and bauxite, applied in the field of building materials, can solve problems such as poor strength, and achieve the effects of improving setting strength, shortening hydration setting time, and improving long-term poor strength

Inactive Publication Date: 2018-11-02
河源市极致知管信息科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a kind of aluminate cement and its preparation method, the preparation method of the present invention is after preparing aluminate cement clinker, add sulfate, iron slag and titanium dioxide, improve traditional aluminate cement Problems with poor long-term strength

Method used

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Examples

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Effect test

Embodiment 1

[0021] A kind of aluminate cement, its component comprises the mass percentage content is 55% bauxite, 18% limestone, 16% iron slag, 5% aluminum sulfate, 3% barium sulfate and 3% Titanium dioxide.

[0022] The preparation method of the aluminate cement comprises the following steps:

[0023] (1) Limestone and bauxite are crushed respectively, and the particle diameter after crushing is 60um;

[0024] (2) calcining the crushed limestone and bauxite in a rotary kiln at a high temperature of 1400°C for 24 hours, and obtaining aluminate cement clinker after cooling;

[0025] (3) The iron slag is pulverized to a particle size of 50um, and then 72 parts by weight of aluminate cement clinker, 9 parts by weight of pulverized iron slag, 6 parts by weight of aluminum sulfate, and 5 parts by weight of sulfuric acid The barium and 8 parts by weight of titanium dioxide were ground together to a particle size of 10 um to prepare aluminate cement.

Embodiment 2

[0027] A kind of aluminate cement, its component comprises the mass percentage content is 52% bauxite, 17% limestone, 13% iron slag, 3% aluminum sulfate, 2% barium sulfate and 3% Titanium dioxide.

[0028] The preparation method of the aluminate cement comprises the following steps:

[0029] (1) Limestone and bauxite are crushed respectively, and the particle diameter after crushing is 80um;

[0030] (2) calcining the crushed limestone and bauxite in a rotary kiln at a high temperature of 1500° C. for 20 hours, and obtaining aluminate cement clinker after cooling;

[0031] (3) Iron ore slag is crushed to a particle size of 60um, then 71 parts by weight of aluminate cement clinker, 10 parts by weight of iron slag after crushing, aluminum sulfate of 6 parts by weight, barium sulfate of 5 parts by weight and 8 parts by weight of titanium dioxide are ground together to a particle size of 8um to prepare aluminate cement.

Embodiment 3

[0033] A kind of aluminate cement, its chemical composition comprises the mass percentage content is 55% bauxite, 19% limestone, 18% iron slag, 2% aluminum sulfate, 3% barium sulfate and 3% Titanium dioxide.

[0034] The preparation method of the aluminate cement comprises the following steps:

[0035] (1) Limestone and bauxite are crushed respectively, and the particle diameter after crushing is 50um;

[0036] (2) calcining the crushed limestone and bauxite in a rotary kiln at a high temperature of 1600° C. for 18 hours, and obtaining aluminate cement clinker after cooling;

[0037] (3) The iron ore slag is pulverized to a particle size of 60um, then 75 parts by weight of aluminate cement clinker, 9 parts by weight of crushed iron ore slag, 4 parts by weight of aluminum sulfate, and 6 parts by weight of barium sulfate and 6 parts by weight of titanium dioxide were ground together to a particle size of 15um to prepare aluminate cement.

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Abstract

The invention belongs to the technical field of building materials, and particularly relates to aluminate cement and a preparation method thereof. According to the preparation method provided by the invention, after aluminate cement clinker is prepared, sulfate, iron-ore slag and titanium dioxide are added, so that not only can the hydration solidification of the aluminate cement be shortened, butalso the solidification strength is improved, more importantly the problem that the traditional aluminate cement is poor in long-term strength can be improved, and the compressive strength of the cement after being hydrated for 28 days can still reach 65 to 75 MPa.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to an aluminate cement and a preparation method thereof. Background technique [0002] Aluminate cement is a hydraulic cementitious material made of bauxite and limestone as raw materials, calcined clinker with calcium aluminate as the main component and an alumina content of about 50%, and then finely ground . Aluminate cement is often yellow or brown, but also gray. The main minerals of aluminate cement are monocalcium aluminate and other aluminates, as well as a small amount of dicalcium silicate. Aluminate cement has fast setting and hardening speed, large cement hydration heat and concentrated heat release. It is mainly used in projects with urgent construction schedules. Even if it is constructed at -10°C, aluminate cement can also set and harden quickly. It can be used Construction works in winter. [0003] Aluminate cement is the second series of p...

Claims

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Application Information

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IPC IPC(8): C04B7/32
CPCC04B7/32C04B7/323
Inventor 邓佩雯
Owner 河源市极致知管信息科技有限公司
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