Production of fine particle of alkali metal compound having low bulk density |
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申请号 | JP20031894 | 申请日 | 1994-08-03 | 公开(公告)号 | JPH0840720A | 公开(公告)日 | 1996-02-13 |
申请人 | Ofic Co; 大阪富士工業株式会社; | 发明人 | KUBOTANI ATSUYOSHI; ISHIBASHI OSAMU; ONO KOICHI; | ||||
摘要 | PURPOSE:To obtain an fine particle of an alkali metal compound having low bulk density by bringing an aqueous solution of an alkali metal compound into contact with a combustion gas generated from a specific pulse combustor. CONSTITUTION:An inlet 10 or 11 for an aqueous solution of a raw material is placed at the inside or at the outlet port of the combustion gas-discharging tube 6 of a pulse combustor 1. An aqueous solution of an alkali metal compound such as NaCl, KCl, Na2SO4, etc., is fed through the inlet for an aqueous solution of a raw material and it is brought into contact with pulse combustion gas of about 300-600 deg.C generated from a pulse combustor 1. The alkali metal aqueous solution is instantly dehydrated and alkali metal fine particles having low bulk density such as about 0.2-0.3g/mL and particle diameters of about 10-40mum are formed. The particles are separated from the combustion gas at a dried powder-trapping apparatus 9 of a cyclone-type and the separated particles are discharged from a dried powder-discharging outlet 12. On the other hand, the combustion gas, which has separated the dried particles, is exhausted from a gas exhaust 13. | ||||||
权利要求 | 【請求項1】 アルカリ金属化合物の水溶液をパルス燃焼ガスに接触させることを特徴とするアルカリ金属化合物の低嵩密度微細粒子の製造方法。 【請求項2】 パルス燃焼ガスが、少なくとも1個の空気送入管、少なくとも1個の燃料送入管及び少なくとも1個の点火手段を有する燃焼室、及び次第に径が大きくなる形状の燃焼ガス排気管が同一軸線上に順次配置され、且つ燃焼室が排気管と接続する部分の径が絞られている形状を有するパルス燃焼器の燃焼室内で燃料を燃焼することにより発生したものである請求項1に記載の低嵩密度微細粒子の製造方法。 |
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说明书全文 |
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