Photovoltaic panel silicon refining method

What is the value chain of the silicon photovoltaic industry?

Crystal silicon cells accounted for more than 95% of this capacity [1, 2]. Figure 1 illustrates the value chain of the silicon photovoltaic industry, ranging from industrial silicon through polysilicon, monocrystalline silicon, silicon wafer cutting, solar cell production, and finally photovoltaic (PV) module assembly.

Can silicon wafers be recovered from damaged solar panels?

Particularly, the focus lies on the advantageous recovery of high-value silicon over intact silicon wafers. Through investigation, this research demonstrates the feasibility and cost-effectiveness of silicon wafer recovery from damaged silicon solar panels.

What is photovoltaic secondary silicon containing resource (PV-SSCR)?

In the photovoltaic supply chain, a substantial amount of photovoltaic secondary silicon-containing resource (PV-SSCR), including metallurgical-grade silicon refined slag (MGSRS), silicon fume (SF), silicon cutting waste (SCW) and end-of-life silicon solar cell (ESSC) from discharged modules, can be recycled.

What is the technology for silicon recovery through sintering?

The technology for silicon recovery through sintering encompasses high-temperature smelting , slag refining process, electromagnetic induction refining, and blowing refining . Major methods for physically separating and recovering silicon consist of manual sorting, electric sorting, and flotation .