Lime modifier for delaying rapid quicklime digestion and method thereof, modified quicklime, autoclaved aerated concrete block and preparation method thereof

A technology of quicklime digestion and concrete block

Pending Publication Date: 2021-04-27
新疆新特新能建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the A-CaO content in medium-speed quicklime is relatively low, and the price is high, which restricts its wide use

Method used

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  • Lime modifier for delaying rapid quicklime digestion and method thereof, modified quicklime, autoclaved aerated concrete block and preparation method thereof
  • Lime modifier for delaying rapid quicklime digestion and method thereof, modified quicklime, autoclaved aerated concrete block and preparation method thereof
  • Lime modifier for delaying rapid quicklime digestion and method thereof, modified quicklime, autoclaved aerated concrete block and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] This embodiment provides a lime modifier for delaying quick lime digestion, the raw material formula of which comprises: triethanolamine and water, and the mass-number ratio of triethanolamine to water is 1: (10-500).

[0041] Present embodiment also provides a kind of method that delays quick lime digestion, comprises the following steps:

[0042] The above-mentioned lime modifier is added to the quick lime to delay the digestion of the quick lime to obtain the modified quick lime, wherein the added amount of the lime modifier is 0.005-0.3% of the mass of the quick lime.

[0043] The calcium oxide content in quicklime is not lower than 80mas%, and the digestion temperature is not lower than 80°C.

[0044] The calcium oxide content in the modified quicklime is not lower than 80mas%, and the digestion temperature is not lower than 70°C.

[0045] Preferably, the speed of adding the lime modifier is faster when the fast lime digestion speed is fast than when the fast quic...

Embodiment 2

[0056] This example provides a lime modifier for delaying quick lime digestion. The raw material formula includes: triethanolamine and water, and the mass-number ratio of triethanolamine to water is 1:10.

[0057] Present embodiment also provides a kind of method that delays quick lime digestion, comprises the following steps:

[0058] The above-mentioned lime modifier is added to the quick lime to delay the digestion of the quick lime to obtain the modified quick lime, wherein the added amount of the lime modifier is 0.005% of the mass of the quick lime.

[0059] This embodiment also provides a modified quicklime prepared by the above method.

[0060] The fast lime in this example has a digestion rate of 2 minutes, a digestion temperature of 95° C., an initial temperature of 86° C., an effective calcium oxide of 90.86mas%, and an ambient temperature of 27° C.

[0061] The modified quicklime in this example has a digestion rate of 11.8 minutes, a digestion temperature of 78°C...

Embodiment 3

[0063] This example provides a lime modifier for delaying quick lime digestion, the raw material formula of which includes: triethanolamine and water, the mass-number ratio of triethanolamine to water is 1:500.

[0064] Present embodiment also provides a kind of method that delays quick lime digestion, comprises the following steps:

[0065] The above-mentioned lime modifier is added to the quick lime to delay the digestion of the quick lime to obtain the modified quick lime, wherein the added amount of the lime modifier is 0.3% of the mass of the quick lime.

[0066] This embodiment also provides a modified quicklime prepared by the above method.

[0067] The fast lime in this example has a digestion rate of 2 minutes, a digestion temperature of 95° C., an initial temperature of 86° C., an effective calcium oxide of 90.86mas%, and an ambient temperature of 27° C.

[0068] The modified quicklime in this example has a digestion rate of 14 minutes, a digestion temperature of 77...

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Abstract

The invention discloses a lime modifier for delaying rapid quicklime digestion and a method thereof, modified quicklime, an autoclaved aerated concrete block and a preparation method thereof, the raw material formula of the modifier comprises triethanolamine and water, and the mass part ratio of triethanolamine to water is 1: (10-500). According to the lime modifier and the method thereof, the quick lime is adjusted, the reaction speed after the quick lime makes contact with water is decreased, the digestion speed of the quick lime is increased, the modified quick lime is obtained, the content of A-CaO in the modified quick lime is relatively low, and the price of the modified quick lime is lower than that of medium-speed quick lime; the modified quicklime is stably digested, so that the effect of prolonging the digestion of the quicklime is achieved, the mutual adaptation of the slurry thickening speed and the aluminum powder gas-forming speed in the production of the autoclaved aerated concrete blocks is favorably ensured, the production process of the autoclaved aerated concrete blocks is stabilized, the production quality can be stably controlled, and the product qualification rate is improved.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a lime modifier for delaying quick lime digestion, a method, modified quick lime, an autoclaved aerated concrete block and a preparation method thereof. Background technique [0002] Autoclaved aerated block concrete is a lightweight and porous new building material, which has the advantages of light weight, good heat preservation, processability and non-combustibility. It can be made into blocks, plates and insulation products of different specifications, and is widely used in the enclosure and filling structures of industrial and civil buildings. The raw materials are mainly cement, quicklime, and fly ash, and foaming agent is added, and the lightweight porous silicate products are produced through batching, stirring, pouring, resting, cutting, autoclaving and other processes. [0003] In the production of autoclaved aerated block concrete, the digestion...

Claims

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Application Information

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IPC IPC(8): C04B2/06C04B28/14C04B38/02
CPCC04B2/06C04B28/14C04B2201/50C04B7/00C04B22/064C04B22/04C04B18/08C04B38/02
Inventor 李小军陈强娃马永东王勇
Owner 新疆新特新能建材有限公司
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