Method for preparing high-dispersibility nano-calcium carbonate by utilizing stalactite

A nano-calcium carbonate, high dispersibility technology, applied in the directions of calcium carbonate/strontium/barium, nanotechnology, reagents, etc., can solve problems such as easy agglomeration, and achieve the effects of easy operation of preparation steps, wide sources and low cost.

Active Publication Date: 2017-02-01
QUZHOU HUASHUN CALCIUM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem that the present invention mainly solves is aimed at present common nano-calcium carbonate preparation method, because nano-calcium carbonate has very high free energy and polarity, agglomerates ...

Method used

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Examples

Experimental program
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Effect test

example 1

[0018] Weigh 800g of stalactite and put it into a liquid nitrogen freezer, freeze it at -50°C for 1 hour, take it out, put it in a jet mill for 15 minutes and pass it through a 100-mesh sieve to obtain stalactite powder. In the flask of the trachea; add 3L of deionized water to the above flask, start the stirrer to stir at a speed of 300r / min, and pass carbon dioxide into the flask at a rate of 10mL / min from the vent tube during the stirring process, and keep the speed of stirring to react After 1h, filter and remove the filter residue to obtain a calcium bicarbonate solution; sequentially add serine and tyrosine to the calcium bicarbonate solution obtained above in a mass ratio of 1:1:100, mix and stir evenly to obtain a mother liquor, and set aside; use a brush to sweep Brush the stamens of rapeseed flowers, collect the pollen falling from the stamens with a glass bottle, weigh 10g of collected rapeseed pollen and pour it into 700mL of absolute ethanol, then add 100mL of 10% ...

example 2

[0021] Weigh 850g of stalactite and put it into a liquid nitrogen freezer, freeze it at -45°C for 2 hours, take it out, put it in a jet mill for 18 minutes, and pass it through a 100-mesh sieve to obtain stalactite powder. In the flask of the trachea; add 3L deionized water to the above-mentioned flask, start the stirrer to stir at a speed of 350r / min, and pass carbon dioxide into the flask at a rate of 10mL / min from the vent pipe during the stirring process, and keep the speed of stirring to react After 2 hours, filter and remove the filter residue to obtain a calcium bicarbonate solution; sequentially add serine and tyrosine to the calcium bicarbonate solution obtained above in a mass ratio of 1:1:100, mix and stir evenly to obtain a mother liquor, and set aside; use a brush to sweep Brush the stamens of rapeseed flowers, collect the pollen falling from the stamens with a glass bottle, weigh 11g of the collected rapeseed pollen and pour it into 750mL of absolute ethanol, then...

example 3

[0024] Weigh 900g of stalactites and put them into a liquid nitrogen freezer, freeze at -40°C for 2 hours, take them out, put them into a jet mill for 20 minutes, pass through a 100-mesh sieve to obtain stalactite powder, and put the stalactite powder into the In the flask of the trachea; add 4L of deionized water to the above flask, start the stirrer to stir at a speed of 400r / min, and pass carbon dioxide into the flask at a rate of 10mL / min from the vent tube during the stirring process, and keep the speed of stirring to react After 2 hours, filter and remove the filter residue to obtain a calcium bicarbonate solution; sequentially add serine and tyrosine to the calcium bicarbonate solution obtained above in a mass ratio of 1:1:100, mix and stir evenly to obtain a mother liquor, and set aside; use a brush to sweep Brush the stamens of rapeseed flowers, collect the pollen falling from the stamens with a glass bottle, weigh 12g of collected rapeseed pollen and pour it into 800m...

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PUM

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Abstract

The invention relates to a method for preparing high-dispersibility nano-calcium carbonate by utilizing stalactite, and belongs to the technical field of calcium carbonate preparation. The method comprises the following steps: first, freezing the stalactite by using liquid nitrogen and crushing, soaking the crushed stalactite by using carbon dioxide-rich water to obtain calcium bicarbonate solution, adding amino and carboxyl-rich amino acid to serve as a dispersion protecting agent to prepare a mother liquid; then, providing active sites for calcium carbonate deposition by taking pollen of which the surface is rich in active groups to as a crystal nucleus, and heating and mixing with the mother liquid, wherein calcium carbonate particles are uniformly arranged on the active sites of the surfaces of pollen crystal nucleuses by utilizing the principle that calcium carbonate precipitate is generated by heating the sodium bicarbonate, so that an agglomerate phenomena is avoided; finally, calcining by utilizing a muffle furnace to remove the pollen crystal nucleuses to obtain the nano-calcium carbonate which is dispersed uniformly; the problems that agglomeration is easily caused in a common calcium carbonate preparation method, and most calcium carbonate exists in aggregate are effectively solved, so that the method has a broad application prospect.

Description

technical field [0001] The invention relates to a method for preparing highly dispersed nano-calcium carbonate by utilizing stalactites, and belongs to the technical field of calcium carbonate preparation. Background technique [0002] Nano-calcium carbonate is a new type of ultra-fine solid powder material developed in the 1980s, with a particle size between 0.01 and 0.1 μm. Due to the superfineness of nano-calcium carbonate particles, its crystal structure and surface electronic structure change, resulting in quantum size effects, small size effects, surface effects and macroscopic quantum effects that ordinary calcium carbonate does not have. It can be widely used in plastics, Rubber, paint, ink, sealing adhesive materials, coatings and other fields. [0003] In the current common method of preparing calcium carbonate, because the surface of nano-calcium carbonate has a group with strong hydrophilicity, the affinity between nano-calcium carbonate and polymer is poor, and...

Claims

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Application Information

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IPC IPC(8): C01F11/18B82Y40/00
CPCB82Y40/00C01F11/18Y02P20/141
Inventor 佟明张晶
Owner QUZHOU HUASHUN CALCIUM IND CO LTD
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