Graphene industry has broad prospects for artificial diamond production capacity expansion

Graphene industry has broad prospects

Graphene is currently the best known conductive material, especially suitable for high-frequency circuits, which can produce future supercomputers. Graphene photonic sensors are used to detect the information carried in the fiber, while the transparent properties of graphene make it The electric board has better light transmittance and can be used for a solar cell panel liquid crystal display. Graphene can also be used in the fields of transistor and gene sequencing to produce ultra-thin and ultra-light aircraft materials, ultra-tough body armor, photoelectrochemical cells made of graphene can replace metal-based organic light-emitting diodes and traditional metal graphite electrodes. To make it easier to recycle.

As a substitute for silicon, graphene can be used in the field of chips instead of crystalline silicon. The global demand for semiconductor crystalline silicon is about 2,500 tons per year. If graphene replaces one tenth of crystalline silicon to make high-end integrated circuits, the market capacity is at least 500 billion yuan. Graphene can be used as a display material for conductive materials. It is expected that the global demand for ITO conductive glass will be between 85 and 95 million in 2011, and the replacement space for graphene is huge.

Synthetic diamond capacity expansion

Synthetic diamond related technology generates diamond by reacting carbonaceous materials such as graphite with certain metals, and is widely used in various fields of the national economy. With the continuous expansion of China's investment and infrastructure scale, technology upgrades in the traditional processing sector, global manufacturing centers shifting to the domestic market, and the rapid development of emerging industries, China's synthetic diamond market demand is more vigorous, showing a trend of sustained and rapid growth.

The National Development and Reform Commission, the Ministry of Science and Technology, and the Ministry of Commerce issued the “Guidelines for Priority Areas for High-tech Industries with Priority Development”, emphasizing that superhard materials and products involve priority areas for priority development in two countries. First, priority is given to industrial development in advanced manufacturing. Automation and precision and efficient processing, including the development of new types of precision machining tools, abrasive tools, etc.; Second, in the information industry, involving silicon wafer processing and other electronic special equipment, instruments and tools. Since 2000, the import volume of high-grade super-hard materials has increased at an annual rate of more than 20%. China has a large space for development in the field of high-grade super-hard materials.

The superhard material industry belongs to the sub-sector of the diamond industry. In addition to the composite (polycrystalline) superhard material industry, the superhard material industry also has a single crystal superhard material industry. After entering the year 2000, China has become the world's largest manufacturing country for superhard materials. The compound annual growth rate has reached 16.4% in the past decade, and it now accounts for more than 90% of the global total.

Special graphite demand growth rate

Special graphite mainly includes isostatic graphite and needle coke, and its application fields are very wide. Isostatic graphite is mainly used in solar photovoltaic and semiconductor, continuous casting molds, EDM and nuclear power. It is especially driven by the photovoltaic industry. The supply of isostatic graphite is in short supply and the price is high. From the perspective of domestic market demand, the annual demand for isostatic graphite in China will exceed 30,000 tons in 2015.

The annual demand for needle coke in China is around 400,000 tons, 80% is imported, and high-grade products are completely imported. Needle coke is the main raw material for ultra high power and high power graphite electrodes, accounting for 70% of the cost. Due to the technical monopoly, needle coke is mainly produced by foreign companies. The profits of the graphite electrode industry are concentrated in the needle coke production enterprise, and the ultra high power and high power electrode industries are maintained in a low profit state. With the breakthrough in domestic technology, the capacity of needle coke has gradually broken through foreign monopoly, and the price has returned to a reasonable level. The graphite electrode enterprise will benefit from the large carbon.