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A kind of strontium ferrite-based sacrificial mortar and preparation method thereof

A strontium ferrite and mortar technology is applied in the field of strontium ferrite-based sacrificial mortar and the preparation of the material, which can solve the problems of high cost, large amount of cement, and sacrificial mortar that has not yet been seen, and achieves improved compressive strength, The effect of enhancing erosion resistance and high engineering application value

Active Publication Date: 2022-07-15
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Strontium ferrite-based sacrificial paste is a mixture of cement, water and strontium ferrite. It has better working performance, but the amount of cement is larger and the cost is higher.
However, there is no report on the preparation of sacrificial mortar with iron strontium oxide

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A strontium ferrite-based sacrificial mortar, in parts by weight, comprising the following components:

[0027] 900 parts of sulfoaluminate cement, 100 parts of strontium ferrite, 600 parts of quartz sand, 400 parts of water, and 0.30 parts of water reducing agent.

[0028] Preparation:

[0029] (1) Weigh the required materials, including sulfoaluminate cement, strontium ferrite powder, quartz sand, tap water, and water reducing agent;

[0030] (2) Wet the mixer and all tools and molds that need to be used;

[0031] (3) Add the weighed sulfoaluminate cement, strontium ferrite powder, and quartz sand to the forced single-horizontal shaft concrete mixer in turn. material M1;

[0032] (4) First, mix 1 / 2 of the water with all the water-reducing agent, stir evenly, then add the mixed solution to the mixed material M1, and then use the remaining water to clean the container containing the water-reducing agent. Then, water is added to the mixed material M1, and the mixed m...

Embodiment 2

[0034] A strontium ferrite-based sacrificial mortar, in parts by weight, comprising the following components:

[0035] 800 parts of sulfoaluminate cement, 200 parts of strontium ferrite, 600 parts of quartz sand, 400 parts of water, and 1.0 part of water reducing agent.

[0036] Preparation:

[0037] (1) Weigh the required materials, including sulfoaluminate cement, strontium ferrite powder, quartz sand, tap water, and water reducing agent;

[0038] (2) Wet the mixer and all tools and molds that need to be used;

[0039] (3) Add the weighed sulfoaluminate cement, strontium ferrite powder, and quartz sand to the forced single-horizontal shaft concrete mixer in turn. material M1;

[0040] (4) First, mix 1 / 2 of the water with all the water-reducing agent, stir evenly, then add the mixed solution to the mixed material M1, and then use the remaining water to clean the container containing the water-reducing agent. Then, water is added to the mixed material M1, and the mixed mat...

Embodiment 3

[0042] A strontium ferrite-based sacrificial mortar, in parts by weight, comprising the following components:

[0043] 700 parts of sulfoaluminate cement, 300 parts of strontium ferrite, 600 parts of quartz sand, 400 parts of water, and 35.0 parts of water reducing agent.

[0044] Preparation:

[0045] (1) Weigh the required materials, including sulfoaluminate cement, strontium ferrite powder, quartz sand, tap water, and water reducing agent;

[0046] (2) Wet the mixer and all tools and molds that need to be used;

[0047] (3) Add the weighed sulfoaluminate cement, strontium ferrite powder, and quartz sand to the forced single-horizontal shaft concrete mixer in turn. material M1;

[0048](4) First, mix 1 / 2 of the water with all the water-reducing agent, stir evenly, then add the mixed solution to the mixed material M1, and then use the remaining water to clean the container containing the water-reducing agent, wash Then, water is added to the mixed material M1, and the mix...

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Abstract

The invention discloses a strontium ferrite-based sacrificial mortar and a preparation method. The strontium ferrite-based sacrificial mortar is mainly composed of 720-1000 parts of sulfoaluminate cement, 100-300 parts of strontium ferrite, and 600 parts of quartz sand. ‑650 parts, 400-450 parts water, 0.01-35 parts water reducing agent. The production process of the invention is simple and can be prepared by a conventional forced single-horizontal shaft concrete mixer. The strontium ferrite-based sacrificial mortar prepared by the invention has excellent working performance, high compressive strength and excellent corrosion resistance, and can be used in the current third-generation and future fourth-generation nuclear power plant core traps , with high engineering application value.

Description

technical field [0001] The invention relates to the field of nuclear power materials, in particular to a strontium ferrite-based sacrificial mortar and a preparation method of the material. Background technique [0002] In order to mitigate and alleviate the serious consequences of nuclear power plant accidents, in the third generation nuclear power technology, the core melt is generally collected, cooled and solidified by core traps. In the event of a severe nuclear power accident, the sacrificial material in the core trap interacts with the core melt. The temperature of the core melt is high (3000°C-4000°C), enough to erode the cement-based sacrificial material with a melting temperature of only 1100°C in contact with it. Once the sacrificial material of the core trap is exhausted, the extremely high temperature core melt will continue to erode the bottom of the containment. If the bottom of the containment is melted through, the integrity of the containment is lost and t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/06
CPCC04B28/06C04B2201/50C04B2111/20C04B2111/00862C04B14/06C04B2103/302C04B14/30C04B28/065C04B14/308C04B20/0076C04B40/0028C04B2103/32C04B24/2647C04B24/2641C04B40/0046
Inventor 褚洪岩蒋金洋赵欢高李秦健健汤金辉王凤娟黄凯健
Owner NANJING FORESTRY UNIV
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