Direct ReSi – Si-recovery from recycling of SiC-slurry
The production of Si-wafers for solar cells or semiconductors still utilizes wire saw cutting to turn silicon bricks into wafers. The actual cutting is performed by the cutting slurry, a suspension of silicon carbide (SiC) in cooling fluid. Recycling of the waste slurry, which contains silicon (Si) and SiC as valuable materials, can generate cost savings. The demand for Si-wafers, and therefore the need for cost-effective and efficient recycling continuously increases.
After separation of the coarse SiC-particles, the remaining mixture of Si and SiC is treated with acids. Si is concerted into Chlorosilane, and the remaining SiC recovered. The Chlorosilane can be feed into the production process for silicon.
Further Information: PDF
PROvendis GmbH
Phone: +49 (0)208/94105 10
Contact
Dipl.-Ing. Alfred Schillert
Media Contact
All latest news from the category: Technology Offerings
Newest articles
Superradiant atoms could push the boundaries of how precisely time can be measured
Superradiant atoms can help us measure time more precisely than ever. In a new study, researchers from the University of Copenhagen present a new method for measuring the time interval,…
Ion thermoelectric conversion devices for near room temperature
The electrode sheet of the thermoelectric device consists of ionic hydrogel, which is sandwiched between the electrodes to form, and the Prussian blue on the electrode undergoes a redox reaction…
Zap Energy achieves 37-million-degree temperatures in a compact device
New publication reports record electron temperatures for a small-scale, sheared-flow-stabilized Z-pinch fusion device. In the nine decades since humans first produced fusion reactions, only a few fusion technologies have demonstrated…