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Method for preparing nano-calcium carbonate powder through high-energy ball milling

A nano-calcium carbonate powder, high-energy ball milling technology, applied in the direction of calcium carbonate/strontium/barium, nanotechnology, etc., can solve the problems such as unseen preparation, and achieve the effects of easy industrial production, large output and low cost

Active Publication Date: 2017-08-11
HUBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But for nano CaCO 3 There is no relevant literature report on the preparation of powder by high energy ball milling method

Method used

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  • Method for preparing nano-calcium carbonate powder through high-energy ball milling
  • Method for preparing nano-calcium carbonate powder through high-energy ball milling
  • Method for preparing nano-calcium carbonate powder through high-energy ball milling

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] 1. Weigh calcium chloride and sodium carbonate powder at a molar ratio of 1:2, and weigh 30 g of grinding balls so that the ball-to-material ratio is 20:1;

[0040] 2. Add the mixture in 1 into the ball mill tank, set the ball mill time to 60 min, set the ball mill speed to 300rpm, 600rpm, 900rpm and 1000rpm in turn, and start the ball mill;

[0041] 3. After the reaction time is over, take out the white powder in the ball mill tank and dry it in an electric heating constant temperature blast drying oven for 5 hours. Finally, the white powder is stored in a centrifuge tube for subsequent detection. Carry out XRD detection to the obtained product, such as figure 1 As shown, the result shows that when the ball milling speed is 300rpm, the reactant calcium chloride and sodium carbonate react substantially completely, and the product has obvious diffraction peaks of sodium chloride, but there is no diffraction peak of calcite; when the ball milling speed increases to 600rp...

Embodiment 2

[0044] 1. Weigh calcium chloride and sodium carbonate powder at a molar ratio of 1:1.5, and weigh 15 g of grinding balls so that the ball-to-material ratio is 5:1, 10:1, 20:1, and 30:1, respectively;

[0045] 2 Add the mixture in 1 into the ball mill tank, set the ball mill speed to 1000rpm, set the ball mill time to 30min, 60min, 120min and 180min in sequence, and start the ball mill;

[0046] 3. After the reaction time is over, take out the white powder in the ball mill jar, and dry it in an electric constant temperature blast drying oven for 6 hours. Finally, the white powder is stored in a centrifuge tube for subsequent detection. Carry out XRD detection to the obtained product, such as image 3 As shown, the longitudinal comparison results show that increasing the ball-to-material ratio (from 5:1 to 30:1), the reactants calcium chloride and sodium carbonate change from unreacted to completely reacted, and the diffraction peak of calcite appears and becomes more and more ...

Embodiment 3

[0049] 1. Weigh calcium chloride and sodium carbonate powder according to the molar ratio of 1:1, and then weigh 15 g, 30 g, 45 g and 60 g of grinding balls respectively, so that the ball-to-material ratio is 20:1 and 30:1 respectively;

[0050] 2. Add the mixture in 1 into the ball mill tank, set the ball mill speed to 900rpm, set the ball mill time to 60 min and 120 min in turn, and start the ball mill;

[0051] 3. After the reaction time is over, take out the white powder in the ball mill jar and dry it in an electric constant temperature blast drying oven for 7 hours. Finally, the white powder is stored in a centrifuge tube for subsequent detection. Carry out XRD detection to the obtained product, such as Figure 5 As shown, the vertical comparison results show that the diffraction peak of calcite disappears gradually when the mass of the ball increases (from 15 g to 60 g); the horizontal comparison results show that the diffraction peak of calcite Emerge and become sharp...

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Abstract

The invention provides a method for preparing nano-calcium carbonate powder through high-energy ball milling. The method includes the first step of adding raw materials, the second step of carrying out ball milling on the raw materials, and the third step of removing calcium chloride and sodium carbonate. According to the high-energy ball milling preparing method, technological conditions are simple, equipment manufacturing is convenient, the cost is low, and the yield is high; preparation is generally carried out at the room temperature, operation procedures are continuously adjustable, the experiment process is easy to control, and thus industrialized production can be easily achieved; by means of the method, amorphous nano-CaCO3 and crystalline nano-CaCO3 can be prepared by adjusting experiment parameters.

Description

[0001] Technical field: [0002] The invention relates to the field of preparation of inorganic non-metallic powder materials, in particular to a method for preparing nanometer calcium carbonate powder by using high-energy ball milling. [0003] Background technique: [0004] Nano calcium carbonate (CaCO 3 ) is a powder material with a particle size between 0.01-0.1 μm. with ordinary CaCO 3 Compared with ultrafine nano-CaCO 3 Particles produced some ordinary CaCO 3 Special effects that do not exist, such as macroscopic quantum effects, small size effects, and quantum size effects. Nano-CaCO 3 These special effects make it show unique advantages in catalysis, light and heat resistance, melting point, magnetism and so on. As an inorganic chemical product, nano-CaCO 3 After surface modification, it becomes a functional supplementary material, which is widely used in different fields such as rubber, paint, plastic, paper, ink, daily chemical and medicine. [0005] At normal...

Claims

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Application Information

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IPC IPC(8): C01F11/18B82Y40/00
CPCB82Y40/00C01F11/18C01P2002/72C01P2004/03C01P2004/64
Inventor 蒋久信吴月陈传杰肖博文赵康华
Owner HUBEI UNIV OF TECH
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