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Artificially synthesized red coral and its preparation method

A kind of artificial synthesis and coral technology, applied in chemical instruments and methods, iron compounds, inorganic chemistry, etc., can solve the problems of complicated cultivation methods and long cycle of red coral, and achieve the effect of low price, bright color and short production cycle

Inactive Publication Date: 2015-02-25
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the red corals cultivated by this method are bright in color, the period is too long and the cultivation method is complicated.

Method used

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  • Artificially synthesized red coral and its preparation method
  • Artificially synthesized red coral and its preparation method
  • Artificially synthesized red coral and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Mix 26g of calcium superoxide and 3g of graphite, then add 0.55g of iron oxide and 2.23g of magnesium oxide powder, put it into a ball mill jar, add 635.6g of stainless steel balls, mill for 30 minutes, press into tablets, and then use the six-sided top The press was kept at 2GPa and 500°C for 60mim to obtain 85CaCO 3 ·3Fe 2 o 3 ·12MgO artificially synthesized red coral block material. Such as figure 1 As shown, it can be seen that the prepared red coral appears pink.

Embodiment 2

[0019] Mix 26g of calcium superoxide and 3g of graphite, then add 2.23g of iron oxide and 0.55g of magnesium oxide powder, put it into a ball mill jar, add 794.5g of stainless steel balls, mill for 30 minutes, press into tablets, and then use the six-sided top The press was kept at 2GPa and 600°C for 60min to obtain 90CaCO 3 8Fe 2 o 3 ·2MgO artificially synthesized red coral block material. Such as figure 2 As shown, it can be seen that the prepared red coral presents a bright red color.

Embodiment 3

[0021] Mix 26g of calcium superoxide and 3g of graphite, then add 1.7g of iron oxide and 1.7g of magnesium oxide powder, put them into a ball mill jar, add 712.8g of stainless steel balls, mill for 30 minutes, press into tablets, and then use the six-sided top The press was kept at 2GPa and 550°C for 60min to obtain 88CaCO 3 6Fe 2 o 3 ·6MgO artificially synthesized red coral block material. Such as image 3 As shown, it can be seen that the prepared red coral materials mainly contain CaCO 3 , Fe 2 o 3 , MgO three mineral composition.

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Abstract

The chemical molecular formula of an artificially synthesized red coral is xCaCO3.yFe2O3.(1-x-y)MgO, x and y are mass percentages (wt.%), x is not smaller than 85% and not greater than 90%, and y is not smaller than 3% and not greater than 8%. A preparation method of the artificially synthesized red coral comprises the following steps: blending superfine calcium oxide powder with graphite powder according to a molar ratio of 1:1, adding iron oxide and magnesium oxide, putting the obtained mixed powder into a ball milling tank, adding billing balls according to a ball / material ratio of 20-25:1, carrying out ball milling for 30min, carrying out compression molding, and carrying out temperature and pressure maintenance by using a cubic press under 2GPa at 500-600DEG C for 60min to synthesize the red coral block material. The preparation method has the advantages of simple preparation process and short production period; and the red coral material prepared in the invention has rich gorgeous color and fine texture, and is suitable for being carved and processed to form red coral ornaments and accessories.

Description

technical field [0001] The invention relates to an artificially synthesized red coral and a preparation method thereof. Background technique [0002] In terms of mineral composition, most of red coral is calcium carbonate, accounting for about 94% of the total mass, and there is a certain amount of organic matter and trace elements, magnesium carbonate, iron oxide, etc. The red corals in the world are mainly produced in Taiwan, Japan, the Hawaiian Islands and the Mediterranean coast, these areas with frequent submarine volcanic activities. A large number of volcanic activities on the seabed provide volcanic ash materials, which are rich in a certain amount of colored elements such as iron, manganese and Colorless elements magnesium, potassium, etc. If the main element adsorbed by coral stone in the process of calcification is iron, it will appear red, and if it is mainly magnesium, with a little iron element, it will appear pink or white. As the saying goes, "thousand-year...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/00
Inventor 彭秋明邹国栋向建勇
Owner YANSHAN UNIV
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