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Preparation technology for life diamond

A preparation process and diamond technology, applied in the field of diamond preparation, can solve problems such as no published implementation methods, and achieve the effects of avoiding cavity pressure drop and deformation problems, reducing costs, and shortening production cycles.

Inactive Publication Date: 2016-02-17
重庆天宇弘锋新材料科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the patent does not disclose specific implementation methods

Method used

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  • Preparation technology for life diamond
  • Preparation technology for life diamond

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Such as figure 2 as shown,

[0023] 1. Put 100 grams of human hair in a high temperature, vacuumize it and let in argon gas, then heat it to 1000°C and keep it warm for 2 hours to get 12 grams of solid carbon.

[0024] 2. The solid carbon was heated to boiling in aqua regia (hydrochloric acid / nitric acid=3 / 1) for 2 hours, and then treated in heated sodium hydroxide for 1 hour to obtain 10 grams of pure carbon.

[0025] 3. Put the purified solid carbon in a specific synthesis block, under the catalysis of metal catalyst or non-metal catalyst, the pressure is 5.6GPa, the temperature is 1350 ℃ for 20 minutes to obtain 5 grams of diamond powder.

[0026] 4. Using the diamond powder as a carbon source, grow it for 250 hours by the temperature difference method (seed crystal method) to obtain a diamond single crystal of about 5 carats.

[0027] 5. Cut and process the diamond single crystal to obtain a 2-carat life diamond.

Embodiment 2

[0029] Such as figure 2 as shown,

[0030] 1. Put 80 grams of human hair in a reduction furnace, vacuumize and inject hydrogen, then heat to 900°C and keep it warm for 2 hours to obtain 10 grams of solid carbon.

[0031] 2. The solid carbon was heated to boiling in aqua regia (hydrochloric acid / nitric acid=3 / 1) for one hour, and then treated in heated sodium hydroxide for one hour to obtain 8 grams of pure carbon.

[0032] 3. Put the purified solid carbon in a specific synthesis block, under the catalysis of metal catalyst or non-metal catalyst, the pressure is 5.6GPa, the temperature is 1350 ℃ for 20 minutes to obtain 4 grams of diamond powder.

[0033] 4. Using the diamond powder as a carbon source, grow it for 200 hours by the temperature difference method (seed crystal method) to obtain a diamond single crystal of about 4 carats.

[0034] 5. Cutting and processing the diamond single crystal to obtain a 1.5-carat life diamond.

Embodiment 3

[0036] Such as figure 2 as shown,

[0037] 1. Put 90 grams of human hair in a high-temperature furnace, vacuumize and feed nitrogen, then heat to 1000°C and keep it warm for 1 hour to obtain 11 grams of solid carbon.

[0038] 2. The solid carbon was heated to boiling in aqua regia (hydrochloric acid / nitric acid=3 / 1) for one hour, and then treated in heated sodium hydroxide for one hour to obtain 9 grams of pure carbon.

[0039] 3. Put the purified solid carbon in a specific synthesis block, and under the catalysis of metal catalyst or non-metal catalyst, the pressure is 5.6GPa, and the temperature is 1350°C for 20 minutes to obtain 3 grams of diamond powder.

[0040] 4. Using the diamond powder as a carbon source, grow it for 150 hours by the temperature difference method (seed crystal method) to obtain a diamond single crystal of about 3 carats.

[0041] 5. Cut and process the diamond single crystal to obtain 1 carat life diamond.

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Abstract

A preparation technology for life diamond is prepared according to the following steps: in vacuum, a reducing atmosphere or inert atmosphere, performing high-temperature processing on human body or animal wool, so as to extract solid carbon from human body or animal wool; immersing into a strong acid or a strong base to remove impurities, so as to perform purification processing; then under a metal catalyst, nonmetal catalyst or catalyst-free condition, generating a diamond fine powder or particle at a high temperature under a high pressure; taking the generated diamond fine powder or particle as a raw material, and generating a jewel-grade large-particle diamond monocrystalline at a high temperature under a high pressure by utilizing a crystal seed process; and performing cutting processing on the jewel-grade diamond monocrystalline to form life diamond. The diamond monocrystalline is grown by utilizing extracted solid carbon for directly generating the diamond powder and then taking the diamond powder as the carbon source. The method saves a graphitization process, and is beneficial for reducing cost in the production cost.

Description

technical field [0001] The invention relates to the field of diamond preparation, in particular to a method for preparing diamonds using carbon elements extracted from human body / animal hair or other animal and plant organisms as raw materials. Background technique [0002] Diamond is composed of carbon elements and has a cubic crystal structure. Diamond has the highest hardness and thermal conductivity among all known materials, and is widely used in various industrial processing and semiconductor heat dissipation industries. Gem-grade large-grain diamonds are generally called diamonds after cutting. [0003] Natural diamonds are formed in the high-temperature and high-pressure environment about 150 kilometers below the mantle, and are brought to the surface with volcanic eruptions and the movement of the crust. [0004] Known as the "King of Gemstones" because of its hardness, rarity and dazzling visual effect. [0005] In 1955, General Electric (GE) of the United State...

Claims

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Application Information

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IPC IPC(8): B01J3/06
CPCB01J3/06B01J2203/0625B01J2203/0655B01J2203/068
Inventor 李洪李伟简德志
Owner 重庆天宇弘锋新材料科技有限责任公司