会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 4. 发明公开
    • 토양ㆍ지하수의 정화 처리용 철 입자, 그의 제조법, 해당철 입자를 포함하는 정화제, 그의 제조법 및토양ㆍ지하수의 정화 처리 방법
    • 用于净化污染土壤或地下水的铁粒子,生产铁颗粒的方法,包含铁颗粒的净化剂,用于生产净化剂的方法和净化污染土壤或地下水的方法
    • KR1020030045613A
    • 2003-06-11
    • KR1020020075808
    • 2002-12-02
    • 토다 고교 가부시끼가이샤
    • 가와노,주니찌오끼따,도모꼬후지,야스히꼬오끼나까,겐지가꾸야,고지우에가미,마사유끼야따가이,소이찌
    • B09C1/02C02F1/70
    • B09C1/08B09C1/002B82Y30/00C01G49/00C01G49/06C01G49/08C01P2002/72C01P2004/03C01P2004/62C01P2004/64C01P2006/12C01P2006/42
    • PURPOSE: Provided are iron particles for purifying contaminated soil or ground water, process for producing the iron particles, purifying agent comprising the iron particles, process for producing the purifying agent and method of purifying contaminated soil or ground water. CONSTITUTION: The iron particles for purifying soil or ground water comprises a mixed phased of alpha-Fe phase and Fe3O4 phase, and has a BET specific surface area of 5 to 60 m¬2/g, an Fe content of not less 75 % by weight based on the weight of the iron particles and a sulfur content of not less than 1,000 ppm. The process for producing the iron particles for purifying soil or ground water comprises the steps of heat-reducing goethite particles having an average major axis diameter of 0.05 to 0.50 micrometer or hematite particles obtained by heat-dehydrating the goethite particles at a temperature of 250 to 350 deg.C, at a temperature of 250 to 600 deg.C, thereby producing iron particles; and after cooling, transferring the iron particles into water without forming an oxidation film on surface of the iron particles in a gas phase, forming the oxidation film on the surface of the iron particles in water, and then drying the obtained iron particles; or after cooling, forming the oxidation film on the surface of the iron particles in a gas phase. The method for purifying soil or ground water contaminated with harmful substances comprises the steps of mixing and contacting the iron particles with the soil or ground water contaminated with harmful substances.
    • 目的:提供用于净化污染土壤或地下水的铁颗粒,铁颗粒的生产方法,包含铁颗粒的净化剂,生产净化剂的方法和净化污染土壤或地下水的方法。 构成:用于净化土壤或地下水的铁颗粒包含α-Fe相和Fe 3 O 4相的混合阶段,并且BET比表面积为5至60m 2 / g,Fe含量不低于75% 基于铁颗粒的重量和不低于1,000ppm的硫含量的重量。 制备用于净化土壤或地下水的铁颗粒的方法包括以下步骤:平均长轴直径为0.05至0.50微米的热还原针铁矿颗粒或通过将针铁矿颗粒在250℃的温度下热脱水获得的赤铁矿颗粒 350℃,温度250〜600℃,生成铁粒子; 冷却后,将铁粒子转移到水中,在气相中在铁粒子表面形成氧化膜,在铁粒子表面形成氧化膜,然后干燥得到的铁粒子; 或者在冷却后,在气相中在铁粒子的表面上形成氧化膜。 净化污染有害物质的土壤或地下水的方法包括将铁颗粒与受有害物质污染的土壤或地下水混合和接触的步骤。