A kind of nano calcium oxide and preparation method thereof

A technology of nano-calcium oxide and nano-calcium carbonate, which is applied in the field of materials science, can solve problems such as complex preparation processes, and achieve the effects of simple process, wide application range and high production efficiency

Active Publication Date: 2016-01-13
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although nano-calcium oxide can be widely used in the above fields, the preparation process is relatively complicated

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A nano calcium oxide and a preparation method thereof. The specific steps of the preparation method described in this embodiment are:

[0024] Step 1, packing nano-calcium carbonate into a steel container, and then putting the steel container into a vacuum heating furnace;

[0025] Step 2, the vacuum heating furnace is evacuated to 5 ~ 10pa;

[0026] Step 3, heating the vacuum heating furnace after vacuuming to 480-500°C, and keeping it warm for 1-60 seconds;

[0027] Step 4: Cool the steel container by liquid nitrogen quenching, and take out the nano-calcium oxide.

Embodiment 2

[0029] A nano calcium oxide and a preparation method thereof. The specific steps of the preparation method described in this embodiment are:

[0030] Step 1, packing nano-calcium carbonate into a steel container, and then putting the steel container into a vacuum heating furnace;

[0031] Step 2, evacuating the vacuum heating furnace to 1 ~ 5Pa;

[0032] Step 3, heating the vacuum heating furnace after vacuuming to 450°C~480°C, and keeping it warm for 60~600 seconds;

[0033] Step 4: Cool the steel container by quenching in water, and take out the nano-calcium oxide.

Embodiment 3

[0035] A nano calcium oxide and a preparation method thereof. The specific steps of the preparation method described in this embodiment are:

[0036] Step 1, packing nano-calcium carbonate into a steel container, and then putting the steel container into a vacuum heating furnace;

[0037] Step 2, evacuating the vacuum heating furnace to 0.1 to 1 Pa;

[0038] Step 3, heating the vacuum heating furnace after vacuuming to 400-450°C and keeping it warm for 600-900 seconds;

[0039] Step 4: Cool the steel container by high-pressure air cooling, and take out the nano-calcium oxide.

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Abstract

The invention relates to a nano-calcium oxide and a preparation method thereof. The technical solution is: firstly put the steel container containing nano-calcium carbonate into the vacuum heating furnace; then evacuate the vacuum heating furnace to 10Pa or below; then heat the vacuum heating furnace after vacuuming. to 300°C to 500°C, and keep warm for 1 to 1800 seconds; finally, the steel container is cooled by a quenching method or a rapid cooling method, and the nano-calcium oxide is taken out. The invention has the characteristics of simple process, low preparation cost and high production efficiency, and the prepared nano-calcium oxide has uniform microstructure, small particle size and wide application range.

Description

technical field [0001] The invention belongs to the technical field of material science. In particular, it relates to a nano-calcium oxide and a preparation method thereof. Background technique [0002] Broadly speaking, nanomaterials refer to materials that have at least one dimension in the three-dimensional space in the nanoscale range (0.1nm~100nm) or are composed of them as basic units. Properties of nanomaterials include: [0003] (1) Surface and interface effects, which refers to the change in properties caused by the ratio of the number of atoms on the surface of nanocrystal grains to the total number of atoms as the particle size decreases sharply; (2) Small size effects, when nano When the size of the particle is equal to or smaller than the wavelength of the light wave, the De Broglie wavelength of the conduction electron, the coherence length of the superconducting state, the transmission depth and other physical characteristics, its periodic boundary is destro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01F11/06B82Y30/00
CPCC01F11/06C01P2004/64
Inventor 魏耀武姜亚青李楠
Owner WUHAN UNIV OF SCI & TECH
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