Cradle to Gate
Identity ID
ad383682-31fb-4608-b841-fb622d354ee0
Materials
Associated ID
65e7de27-cbb2-47ee-b639-b240346fbb86
Included activities starts
Included activities ends
Description
Polycrystalline silicon ingots can be used for the production of polycrystalline silicon wafers; this dataset includes major raw materials, auxiliary materials consumption, energy use, atmospheric emissions, and waste generated during the production process. Infrastructure such as manufacturing of production equipment and construction of facilities are not included within the system boundary of this dataset; the life cycle inventory data are sourced from literature. The production of polycrystalline silicon ingots starts with acid washing and water washing to treat the silicon feedstock, followed by the directional solidification method to produce polycrystalline silicon ingots, including feeding, casting ingots, furnace dismantling, and inspection processes.
Activity Description
The production process of polycrystalline silicon ingots by directional solidification includes the following steps: silicon feedstock preprocessing, charging, casting ingot, furnace disassembly, and inspection procedures.
Process Description
Polycrystalline silicon ingots are produced using solar-grade polycrystalline silicon as raw material through directional solidification or casting methods, and can be used for the production of polycrystalline silicon wafers.
Time period
2012
2026
Geography
China
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
The production of multicrystalline silicon ingots first involves treating the silicon material through acid washing and water washing processes, followed by the manufacture of multicrystalline silicon ingots using the directional solidification method, which includes the main steps of charging, casting ingots, furnace disassembly, and inspection.