China has mastered the kiloton polysilicon core technology
The appraisal committee unanimously held that the 24 pairs of stick-efficient energy-saving polysilicon reduction furnace complete sets are currently the largest capacity polysilicon reduction furnaces in China, with an annual output of 85 to 100 tons per furnace. The overall process is advanced, energy consumption is low, and production safety is high. Meet the requirements of large-scale production of polysilicon. Wang Zhangguo, deputy director of the appraisal committee and academician of the Chinese Academy of Sciences, said that this achievement has broken the blockade of foreign companies on polysilicon advanced technology. Its importance lies not only in the development of a reduction furnace, but also in the fact that it provides security and basic support for the development of the optoelectronics and silicon materials industries in China.
Yan Dazhou, head of project of China Silicon Hi-Tech Company, said that polysilicon is a strategic basic raw material for the electronic information industry and solar photovoltaic power generation industry and is extremely scarce in the global market. Under the leadership of the major scientific and technological projects of polysilicon in Henan Province underpinned by this major achievement, silicon materials, solar cells, silicon electronics and related industries in Henan Province will develop rapidly, forming a silicon industrial cluster with an output value of 30 billion yuan.
According to another report, Henan Polysilicon Engineering Technology Research Center was also established recently. The completion of the center will provide a world-class research platform for domestic polysilicon industry research work, and will become a key R&D experimental base for polysilicon materials and new energy material production processes and equipment technologies, and detection and analysis technologies.
Bend pulley is used for changing the direction of the belt running or increasing the wrap angle between the conveyor belt and the driving pulley. As per different carrying capacities, the Bend Pulley can be divided into three categories: light duty, medium duty and heavy duty. The shift of the diameter can be 50~100 mm,120~180 mm and 200~260 mm. And the structure is the same with the Driving Pulley. The surface treatment of the bend pulley can be smooth steel and flat rubber lagging.
The bend pulley is usually installed at the tail part or the vertical take-up equipment part when the belt direction need to 180°bending. It will be installed above the take-up equipment part while 90°bending .The pulley, which is used for extending the contact surface, is usually used for below or equal to 45 degree bending.The drive unit has been taken from the Head Pulley , and placed after the first bend pulley on the conveyor return.
The longer belts will have a greater expansion and retraction rate due to climatic temperature changes. As temperature climbs the belt will get longer. When it drops the belt will shrink. To compensate the conveyor belt will have a pulley that is allowed to move with the belt as its length is constantly changing. To keep proper tension on the conveyor belt the pulley, which is called the take up pulley, is weighted. The bend pulleys are called that because the belt bends over them to form a loop for the take up pulley to sit in.
Spherical Roller Bearing are available with heavy duty rollers and cages that are suitable for extreme demand harsh applications such as vibratory screens.
Main Models:
Series 222.., 223.., 230.., 231.., 232.., 239.. 240.., 241.., CA/CC/W33
Bend Pulley
Bend Pulley,Light Duty Bend Pulley,Heavy Duty Bend Pulley
Shandong Xinkaite Bearing Co., Ltd. , http://www.conveyorbearing.com