The Yellow River Group, which sits firmly in the top spot in Asian synthetic diamond production, has once again seized the new high ground in the world of synthetic diamonds: following the breakthrough in the laboratory's artificial coarse-grain diamond technology, the new 22,000-ton press is thick. The granular diamond single crystal and large-diameter polycrystalline composite sheet project entered the stage of industrial trial production, and the largest single crystal diameter of synthetic diamond was 10mm. This is the world's largest gem-quality synthetic diamond, with a single value of 200,000-30. Ten thousand yuan.
The Yellow River Group is mainly engaged in the manufacture of synthetic diamonds. Last year, its synthetic diamond production capacity was about 1.5 billion carats, which is much higher than the capacity of the second diamond company in the industry of about 500 million carats. The production and sales volume of synthetic diamonds is the highest in the world. At present, the domestic market share of the company's products is about 35%, the world market share is about 26%, and the product quality has reached the level of similar enterprises in the world.
In 2008, Huanghe Group took the initiative to withdraw from the by-product fields such as engineering and construction, gathered top talents in the domestic industry, and concentrated on the research of large single crystal diamond synthesis technology in four stages. It independently developed temperature and pressure precision measurement and control, nitrogen removal and rapid crystal growth. Five key core technologies, such as multi-particle large single crystal growth at the same time, and greatly reduced the synthesis cost, so that the large single crystal synthesis capacity reached 10 g of 2 carat gem grade.
In January 2009, Huanghe Group invested 780 million yuan to build a 22,000-ton press synthetic coarse-grained diamond single crystal and large-diameter polycrystalline composite sheet industrialization project, and plans to build 700 new 22,000-ton presses to synthesize coarse-grained diamond single crystals and Large diameter polycrystalline composite sheet production line. After the entire project is completed in 2011, it can produce 9.07.2 billion carats of coarse-grained diamond single crystals and 5.4 million large-diameter polycrystalline composites, which will expand the company's business scale by 3-4 times. At present, the installed presses have entered the stage of industrial production.
Wang Yuchang, chief engineer of the Yellow River Group, said that the current research and development direction of the Yellow River Group is no longer pursuing the improvement of quantity, but to carry out the research of the most advanced products, participate in the high-end competition in the international market, and make gem-quality diamonds. The synthesized 2 carat gem grade diamond with a diameter of 10 mm is the largest single crystal synthetic diamond in the world. In addition to the Yellow River Group in the world, only the US GE company has a small amount of production capacity, and the Yellow River Group, which already has mass production capacity, will become the well-deserved "drilling" ally.
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