Abstract: In slicing a crystal bar into silicon wafers, an average about 40% of silicon would be loss due to the widths of slicing wires themselves. The fact that the silicon slurry is discarded as sludge or discarded after recovering silicon carbide particles causes a large waste of cost. If the silicon slurry (40% of silicon) could be recovered as the raw material for growing silicon crystal bars, the production cost would be lowered. The recovery method of silicon slurry according to the present invention could effectively obtain silicon raw material after removing impurities, which could recover the raw material used in solar crystals, further capable of increasing the silicon crystal production and lowering the cost.

Abstract: The present disclosure provides a method for removing an alcohol from a liquid mixture having high viscosity by the gravity or the centrifugal force and a gas, and the apparatus thereof.

Abstract: Silicon and silicon carbide (SiC) are recovered from kerf loss slurries using two-staged particle phase-transfer method. In the first stage, first sample, which is prepared from kerf loss slurries with silicon content being higher than SiC content, is mixed with water and oil to form first mixture, which is settled to form a water and an oil phase. The first product obtained by centrifugation from water phase has a high Si content. In the second stage, the first product is mixed with water and another oil to form the second mixture which is separated thereby to obtain the second product from water phase. The second product is the preferred silicon powder. Besides, another product, i.e. recovered SiC, is obtained by centrifugation from oil phase of the first stage. Furthermore, if silicon content is lower than SiC content, the first stage is repeated using the first product.

Abstract: In slicing a crystal bar into silicon wafers, an average about 40% of silicon would be loss due to the widths of slicing wires themselves. The fact that the silicon slurry is discarded as sludge or discarded after recovering silicon carbide particles causes a large waste of cost. If the silicon slurry (40% of silicon) could be recovered as the raw material for growing silicon crystal bars, the production cost would be lowered. The recovery method of silicon slurry according to the present invention could effectively obtain silicon raw material after removing impurities, which could recover the raw material used in solar crystals, further capable of increasing the silicon crystal production and lowering the cost.

Abstract: In slicing a crystal bar into silicon wafers, an average of about 40% of silicon would be loss due to the widths of slicing wire saws themselves. The fact that the silicon slurry is discarded or discarded after recovering silicon carbide particles causes a large waste of cost. According to the present invention, the silicon slurry undergoes an acid washing step and a high temperature separation step, wherein the heating temperature is between the melting points of silicon and silicon carbide, and the silicon slurry is resident for an appropriate time, such that the silicon and silicon carbide would be separated to obtain silicon. The present invention could recover the raw material used in solar crystals, further capable of increasing the silicon crystal production and lowering the cost.

Abstract: A method for manufacturing the copper oxide nano-particles is provided. The method includes the steps of providing a copper-contained salt solution, providing a alkaline solution, mixing the copper-contained salt solution and the alkaline solution by using a high-gravity force provided by a high-gravity device to generate a slurry, removing the solvent in the slurry to obtain a precursor of the copper oxide nano-particles, and calcining the precursor to produce the copper oxide nano-particles.

Abstract: A method for manufacturing a metal nanoparticle is provided. The method includes steps of: a) providing a metal salt solution, b) providing a reducing agent, c) providing a protecting agent, d) providing an alkaline solution, e) mixing the salt solution, the reducing agent, the protecting agent and the alkaline solution to form a slurry within a high-gravity field, and f) separating the metal nanoparticle from the slurry.

Abstract: A method for manufacturing a metal nanoparticle is provided. The method includes steps of: a) providing a metal salt solution, b) providing a reducing agent, c) providing a protecting agent, d) providing an alkaline solution, e) mixing the salt solution, the reducing agent, the protecting agent and the alkaline solution to form a slurry within a high-gravity field, and f) separating the metal nanoparticle from the slurry.