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Six problems restrict the development of China's high-purity silicon material industry

six problems restrict the development of China's high-purity silicon material industry

2 because PPC is an amorphous material, December 5, 2007

[China paint information] although China's high-purity silicon material industry has made breakthroughs in process technology, there are still the following problems:

first, the downstream market is outside, At present, more than a dozen enterprises in China have started to build production lines of high-purity silicon. If the construction is completed as planned, it is predicted that the production capacity of high-purity silicon in China will reach about 20000 tons in 2008 and may exceed 60000 tons by 2010. The main downstream market of China's high-purity silicon industry chain is abroad. The firmness policy of domestic solar energy and power generation price policy, glass weaving and other data experiments has not been issued, and the market development is slow. Once the above projects are completed as planned, they are bound to face the situation of overcapacity, threatening the development of the industry

second, the high-purity silicon project is launched disorderly, and the phenomenon of low-level repeated construction is serious.

the investment capital and technical threshold of the high-purity silicon material industry are very high. A Siemens method 1000 ton high-purity silicon project, with an investment of about 1billion yuan. At present, many of the high-purity silicon projects under construction in China are "replica" projects. The process technology and equipment are basically the same, and the overall technical level needs to be verified or improved. If the situation of disorderly launching and low-level repeated construction is formed, it is bound to bring chaos to the industry, waste resources and energy, and cause losses to enterprises and the country

third, there is still a gap between the overall domestic technical level and the foreign advanced level

at present, the core technology of 1000 ton scale production in China has not been fully mastered, and there is still a certain gap with the world advanced level. The technical and economic indicators of the produced high-purity silicon materials are generally not high, and the products lack 4 Low temperature can not reach the international competitiveness of the experimental indicators

fourth, there is a serious lack of talent team and weak innovation ability

China's high-purity silicon is still an emerging industry in China, and the lack of technology reserves and talents are the main difficulties facing the development of the industry

fifth, the product quality is uneven, and the market needs to be regulated by technical standards.

at present, the quality of high-purity silicon materials produced by domestic enterprises is basically between the National Electronic Level 2 and 3, and a small amount of them reach the electronic level 1, which can only meet the preparation requirements of semiconductor silicon chips below 8 inches; The quality of solar grade high-purity silicon products is not very stable, so it is necessary to establish national standards as soon as possible to unify and standardize the industry and market

sixth, most of the built and rebuilt production lines in China do not consider the issues of circular economy and comprehensive utilization of by-products

as the production of high-purity silicon by Siemens process will produce a large number of by-products such as silicon tetrachloride, if not properly handled, it will have an adverse impact on the product cost and environmental protection. The technology of hydrogenation and comprehensive utilization of silicon tetrachloride is difficult, and domestic enterprises are actively tackling it. Only by realizing the continuous operation of the production line can a closed cycle of high-purity silicon production system be formed


first, strengthen the construction of innovation capacity, support the research and development platform of innovative technology, build high-purity silicon material engineering laboratory, increase technology research and development and integrated innovation, and combine the digestion and absorption of imported technology to improve the level of industrialization technology

secondly, because the materials of polysilicon production system are mostly flammable and explosive media, there are many non-standard equipment, the system is complex, the cold and heat balance requirements are high, and the technology is difficult. In addition, due to the small scale of polysilicon industry and the lack of professional and technical personnel, some enterprises rush to start construction by digging people or introducing local technology, monomer equipment and other methods, resulting in new projects may face technical reliability, system safety, environmental protection For risks such as investment and intellectual property disputes, it is suggested that enterprises that want to go to polysilicon should act cautiously to reduce or avoid unnecessary waste. It is suggested that the state strengthen and can be used for similar Utilization - for example, as a correct guide for the development of sealant high-purity silicon material industry, and focus on supporting enterprises with technology and industrialization foundation to further develop technology, comprehensive utilization, and expand production. It is suggested that local governments should have an in-depth understanding of the industrial situation, not blindly duplicate construction, and strictly control the filing of projects from the aspects of energy conservation and environmental protection. Ensure the harmonious, healthy, stable and lasting development of polysilicon industry

third, the high-purity silicon project is a technology intensive engineering project. Technology integration must be combined with key technology and equipment to improve the level of China's high-purity silicon core equipment manufacturing industry, so as to enhance the industrial competitiveness

fourth, carry out research on solar energy application technology, reduce costs, and promote the popularization of photovoltaic solar cell application market. It is suggested that the state introduce preferential policies to support photovoltaic power generation and guide the development of the domestic market

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