Product Introduction:

The Jinhai water treatment equipment is highly skilled in the recycling and utilization of silicon wafer cutting fluid. The waste mortar of solar silicon wafer cutting fluid is a mixture of cutting fluid (PEG) and mortar. The Jinhai water treatment equipment relies on two recycling technologies, centrifugation and sedimentation, to process the waste mortar, recover the cutting fluid and silicon carbide micro powder, and return them to the solar wire cutting machine for reuse.

Qingzhou Jinhai Water Treatment utilizes separation principles and methods such as settling centrifugation, chemical cleaning, flocculation filtration, distillation, extraction, and cyclone classification to remove impurities and moisture from waste mortar, obtaining high-quality and qualified cutting fluid and silicon carbide micro powder, thereby achieving secondary utilization. The liquid recovery process mainly utilizes physical actions to remove solid particles without increasing any soluble impurities. The obtained liquid can ensure the original chemical composition, with the same surface activity, suspension force, and carrying capacity as the new cutting fluid, and can be reused multiple times.

In the recycling of silicon carbide micro powder, in addition to using physical effects to remove fine particles, various chemical reactions must also be used to remove silicon powder, iron, and colloidal particles, in order to ensure that the obtained silicon carbide micro powder has the same quality as the silicon carbide micro powder in the original mortar. And the recycling process does not increase any micro powder particles, while the cutting process will make larger particles finer, so the recovered micro powder does not have large particles and will not scratch the silicon wafer during future use.

matters needing attention:

Due to the use of materials such as cutting fluid (recycled liquid), silicon carbide (recycled silicon carbide), cleaning agents, water, etc. in the process of recycling such materials, the following situations may occur: 1. Poor quality of recycled liquid recovery; 2. Recycled silicon carbide contains free carbon; 3. The cleaning agent has poor effectiveness; 4. Unreasonable scheduling of cleaning process time, etc.