Powder products are widely used in various fields such as papermaking, electronics industry and cosmetics nowadays. Requirements for powder products bave become more and more strict, such as the particle size, the sis...Powder products are widely used in various fields such as papermaking, electronics industry and cosmetics nowadays. Requirements for powder products bave become more and more strict, such as the particle size, the sise distribution and tbe cleanness. This paper puts forward a new way for ultra-fine grinding of powders, that is, applying DIA-jet (direct injection abrasive jet) in powder ultra-fine grinding. Its mechanism is discussed . Experiments on the fine grinding of mica, kaolin, soft clay and calcium bicarbonate powders have been carried out with a DIA-jet device in our laboratory. The experimental results show that it is an effective way for powder fine grinding.展开更多
Based on the two existing abrasive water-jet（AWJ） systems, the dia-jet （or pre-jet） and the post-jet, a new type of abrasive water-jet system is put forward, which combines the dia-jet＇s advantage, low operating ...Based on the two existing abrasive water-jet（AWJ） systems, the dia-jet （or pre-jet） and the post-jet, a new type of abrasive water-jet system is put forward, which combines the dia-jet＇s advantage, low operating system pressure, slender stream jet, and more concentrative abrasive in the blended stream, with merits of post-jet, the less sophisticate apparatus, successive supply of abrasives. The theoretic analysis is brought out in detail, and the nozzle system structure is concisely illustrated. Its relevant experiment results are demonstrated, proving that this new system is effective in various aspects, enlarging penetrating capability without raising system pressure, saving machining power supply, lessening energy loss, etc.展开更多
文摘Powder products are widely used in various fields such as papermaking, electronics industry and cosmetics nowadays. Requirements for powder products bave become more and more strict, such as the particle size, the sise distribution and tbe cleanness. This paper puts forward a new way for ultra-fine grinding of powders, that is, applying DIA-jet (direct injection abrasive jet) in powder ultra-fine grinding. Its mechanism is discussed . Experiments on the fine grinding of mica, kaolin, soft clay and calcium bicarbonate powders have been carried out with a DIA-jet device in our laboratory. The experimental results show that it is an effective way for powder fine grinding.
文摘Based on the two existing abrasive water-jet（AWJ） systems, the dia-jet （or pre-jet） and the post-jet, a new type of abrasive water-jet system is put forward, which combines the dia-jet＇s advantage, low operating system pressure, slender stream jet, and more concentrative abrasive in the blended stream, with merits of post-jet, the less sophisticate apparatus, successive supply of abrasives. The theoretic analysis is brought out in detail, and the nozzle system structure is concisely illustrated. Its relevant experiment results are demonstrated, proving that this new system is effective in various aspects, enlarging penetrating capability without raising system pressure, saving machining power supply, lessening energy loss, etc.
