Polycrystalline silicon production Fields of polycrystalline silicon application

Polycrystalline silicon production

Fields of polycrystalline silicon application Specialists usually distinguish between solar grade polycrystalline silicon (So. G) with purity of 4 N-8 N (99. 99 -99. 999999%) and electronic grade polycrystalline silicon (EG) with purity of 9 N-11 N (99. 9999999 -99. 99999%). Polycrystalline silicon – photovoltaics basis Polycrystalline silicon – electronics basis Monocrystalline silicon Multicrystalline silicon Monocrystalline silicon 95% of semiconductor devices production in the world is based on electronic grade polycrystalline silicon Integrated microcircuits Transistors and diodes for different purposes Processors Photovoltaic inverter Data storage devices Digital, logical and analog circuits Solar modules 100% capacity of the plant (3 000 tons) will be directed to production of electron grade polysilicon with purity of 11 N (99. 99999%). Usage of 11 N purity silicon in photovoltaic inverters production will increase their efficiency coefficient up to 23%. 2

The Main Production Technology «Siemens process» is the most common technology in the world for polycrystalline silicon industrial production. Distribution of global volume of polycrystalline silicon on technologies 16 % Trichlorosilane Siemens 6% process Monosilane Siemens process 78 % JSC «Giredmet» offers modernized technology, which guarantees the best production figures for materials of “electronic” quality. At the heart of the “Siemens process” there is a method of hydrogen reduction of silicon from trichlorosilane. Distinctive feature of the offered technology is application of highperformance equipment and recirculating contours with the purpose of maximum utilization of initial products in order to receive the target product. Other technologies Main technological stages • Synthesis of hydrogen chloride of hydrogen and chlorine. • Synthesis of trichlorosilane by hydrochlorination of silicon. • Dust cleaning of gas-vapor mixture after synthesis of trichlorosilane. • Separation and cleaning of chlorosilanes (rectification). • Hydrogen reduction of silicon using gas-vapor mixture: trichlorosilane – hydrogen. • Hydrogenation of silicon tetrachloride to trichlorosilane using gas-vapor mixture: silicon tetrachloride – hydrogen. • Condensation and regeneration of gas-vapor mixture which generated during synthesis of trichlorosilane and during hydrogen reduction and hydrogenation. • Neutralization and reclaiming of solid, liquid and gaseous production wastes. • Quality control and certification of initial raw materials, intermediate and finished products. • Preparation of polycrystalline silicon for sale as marketable products (chipping, packing, etc. ). 3

Outlook for worldwide polysilicon market grows in 2012 -2016, thousand tons* POLYCRYSTALLINE SILICON CONSUMPTION Total 2011 2012 2013 2014 2015 2016 pessimistic scenario 72. 1 85. 1 98. 1 111. 0 125. 0 138. 8 100. 0 119. 2 144. 2 168. 8 197. 9 226. 0 pessimistic scenario 36. 9 46. 4 57. 5 68. 4 80. 2 91. 8 optimistic scenario 63. 1 78. 6 98. 3 117. 0 139. 3 159. 8 pessimistic scenario 35. 2 38. 7 40. 6 42. 6 44. 8 47. 0 optimistic scenario 36. 9 40. 6 45. 9 51. 8 58. 6 66. 2 optimistic scenario Polysilicon So. G Polysilicon EG So. G – “solar” grade polysilicon EG – “electron” grade polysilicon 5 *Source: Research. Techart 5

Project summary PRODUCTION FIGURES Production capacity 1 000 tons per year Build-up area 11, 7 hectares Energy 20 MW Personnel 450 ECONOMIC FIGURES Volume of investments 120 -125 million EUR IRR 18 -27 % NPV 20 -50 million EUR PI 1, 2 -1, 6 PP years 6 -7 years 6

The main project developer JSC «The State Scientific, Research and Design Institute for Rare Industry “GIREDMET” 119017, Moscow, B. Tolmachevsky lane, 5 building 1 phone: +7 (495) 981 -30 -10 WEB site: www. giredmet. ru 7

The main project developer According to projects developed by Institute “Giredmet” were constructed 22 chemico-metallurgical and ore-dressing plants as well as more than 100 plants manufacturing materials assuring development of nuclear and solar energetics, electronics, aeronautical and space-rocket technology, ship-building, instrumentation technology, modern communication means and systems, navigation, SHF, infrared and superconducting and medical equipment etc. Executed projects: 1. 2. 3. 4. Development of project of construction of 1500 t/year polycrystalline silicon plant in Ras Laffar, Qatar; Development of project of construction of 1260 t/year polycrystalline silicon plant in Leshan, province Sichuan, PR of China; Development of project of construction of 1500 t/year polycrystalline silicon plant in Yichang, province Hubei, PR of China Development of project of construction of 1500 t/year polycrystalline silicon plant in Huhhot, PR of China. 8

Our partners In Russia Federal State unitary enterprise “Mining and Chemical Combine» JSC « Krasnoyarsk Machine-Building Plant» LLC «Scientific and production association «Mostovik» JSC «Podolsk Chemical and metallurgical plant» LLC «Russian Silicon» LLC «Siemens» JSC «Uralchimmash» In the world Centrotherm (Germany) GT Solar (USA) AEG Power Solutions (Germany) Beijing KBD Science & Technology Development Co. , Ltd (China) Carbone Lorraine Composants (France) Inner Mongolia Shen Zhou Silicon Industry Co. , Ltd (China) Liaoning-China Jinhua Smelting Co. , Ltd. (China) Qatar Foundation for Education, Science and Community Development (Qatar) Sichuan Xinguang Silicon-Tech Co. , Ltd (China) Yichang CSG Silicon Material Co. Ltd. (China) 9