摘要:
A clean room having an air-conditioner unit built in the shell of an airtight main room in such a manner as to form part of the internal wall of the main room. This air-conditioner unit is provided with an external casing of a small thickness and this external casing is provided with an air inlet and an air outlet which is fitted with a high-performance filter. The casing has an air blower disposed therein. The airtight main room is mainly formed of a plurality of gate-shaped frames disposed in parallel as regularly spaced on a floor surface. The air-conditioner unit and a control unit are disposed in the spaces intervening between the adjacent vertical members of the gate-shaped frames. The internal wall of the main room is formed of wall panels and the front panel of the casing of the air-conditioner unit.
摘要:
A roundish fused alumina particles having a mean particle size of 5 to 4,000 μm and a roundness of 0.85 or more, and a producing method thereof are provided. The method comprises removing edges of fused alumina particles by making the fused alumina particles collide with each other.
摘要:
The present invention provides a process for producing ultrafine particulate complex oxide containing titanium oxide, including vapor-phase producing a complex oxide containing titanium oxide having a BET specific surface area of about 5 to about 200 m2/g, where a starting material gas containing titanium tetrachloride and an oxidizing gas are preheated to about 700° C. or more, and are reacted with a solution or a slurry of a salt containing a metallic element. The present invention also provides an ultrafine particulate complex oxide containing titanium oxide obtained by the process, and use of the oxide.
摘要:
Provided are an alumina sintered compact containing a titanium compound and an iron compound, wherein FeTiAlO5 grains exist in the grain boundary of the alumina grains and the mean grain size of the FeTiAlO5 grains is from 3.4 to 7.0 μm; and an abrasive grain and a grain stone using the alumina sintered compact.
摘要:
Provided are a method for producing an alumina sintered compact satisfying the following (1) and (2), which comprises mixing and sintering an ilmenite powder and an alumina powder; the alumina sintered compact obtained according to the production method; and an abrasive grain and a grain stone. (1) The total amount of the TiO2-equivalent content of the titanium compound, the Fe2O3-equivalent content of the iron compound and the alumina content is at least 98% by mass; (2) The total amount of the TiO2-equivalent content of the titanium compound and the Fe2O3-equivalent content of the iron compound is from 5 to 13% by mass.
摘要翻译:提供一种满足以下(1)和(2)的氧化铝烧结体的制造方法,其包括将钛铁矿粉末和氧化铝粉末混合并烧结; 按照制造方法得到的氧化铝烧结体; 磨粒和颗粒石。 (1)钛化合物的TiO 2当量含量,铁化合物的Fe 2 O 3当量含量和氧化铝含量的总量为98质量%以上。 (2)钛化合物的TiO 2当量含量和铁化合物的Fe 2 O 3当量含量的总量为5〜13质量%。
摘要:
The invention provides a dry grinding system including grinding means for dry-grinding a material to be ground; first classification means for classifying a ground product obtained through the grinding means, into fine powder having a relatively small average particle size and coarse powder having a relatively large average particle size; second classification means for further classifying the coarse powder obtained through the first classification means, into fine powder having a relatively small average particle size and coarse powder having a relatively large average particle size; and returning means for returning to the grinding means the coarse powder obtained through the second classification means. The invention enables production of a powder product having a desired average particle size at high efficiency.
摘要:
Provided are an alumina sintered compact containing a titanium compound and an iron compound, wherein the total amount of the TiO2-equivalent content of the titanium compound, the Fe2O3-equivalent content of the iron compound and the alumina content is at least 98% by mass, the total amount of the TiO2-equivalent content of the titanium compound and the Fe2O3-equivalent content of the iron compound is from 5 to 13% by mass, and the ratio by mass of the TiO2-equivalent content of the titanium compound to the Fe2O3-equivalent content of the iron compound (TiO2/Fe2O3) is from 0.85/1.15 to 1.15/0.85; and an abrasive grain and a grain stone using the alumina sintered compact.
摘要翻译:提供一种含有钛化合物和铁化合物的氧化铝烧结体,其中钛化合物的TiO 2当量含量,铁化合物的Fe 2 O 3当量含量和氧化铝含量的总量为至少98质量% 钛化合物的TiO 2当量含量和铁化合物的Fe 2 O 3当量含量的总量为5〜13质量%,钛化合物的TiO 2当量含量与 铁化合物(TiO 2 / Fe 2 O 3)的Fe 2 O 3当量含量为0.85 / 1.15〜1.15 / 0.85; 以及使用氧化铝烧结体的磨粒和粒状石。
摘要:
A roundish fused alumina particles having a mean particle size of 5 to 4,000 μm and a roundness of 0.85 or more, and a producing method thereof are provided. The method comprises removing edges of fused alumina particles by making the fused alumina particles collide with each other.
摘要:
The invention provides a dry grinding system including grinding means for dry-grinding a material to be ground; first classification means for classifying a ground product obtained through the grinding means, into fine powder having a relatively small average particle size and coarse powder having a relatively large average particle size; second classification means for further classifying the coarse powder obtained through the first classification means, into find powder having a relatively small average particle size and coarse powder having a relatively large average particle size; and returning means for returning to the grinding means the coarse powder obtained through the second classification means. The invention enables production of a powder product having a desired average particle size at high efficiency.
摘要:
The invention provides a dry grinding system including grinding means for dry-grinding a material to be ground; first classification means for classifying a ground product obtained through the grinding means, into fine powder having a relatively small average particle size and coarse powder having a relatively large average particle size; second classification means for further classifying the coarse powder obtained through the first classification means, into find powder having a relatively small average particle size and coarse powder having a relatively large average particle size; and returning means for returning to the grinding means the coarse powder obtained through the second classification means. The invention enables production of a powder product having a desired average particle size at high efficiency.