PROBLEM TO BE SOLVED: To easily provide a mixture of various fine particle diameters of liquid, solid and gas in a state in which the particle diameter is controlled. SOLUTION: An incompatible liquid A and liquid B are mixed and pulverized by a first liquid atomizer to obtain a first mixture emulsion (A/B emulsion) containing A particles having a constant fine particle diameter. In the first step, the liquid B and the solid Z are mixed and pulverized by a solid/liquid refining device to form a solid/liquid mixture (B/Z solid) containing a solid/liquid mixture containing Z solid particles having a constant fine particle diameter. A second step of obtaining a liquid mixture), and a gas consisting of a gas/liquid mixture containing liquid gas B and gas X, which are mixed and pulverized by a gas/liquid refiner to contain X gas particles having a certain fine particle size. A third step of obtaining the liquid mixture (B/X gas/liquid mixture) and a fourth step of mixing the mixture obtained in the above steps. For example, the liquid A may be liquid fuel such as heavy oil or kerosene, the gas X may be air, nitrogen, hydrogen, and the solid Z may be coal, cereal, silver or gold. [Selection diagram] Figure 1【課題】液体、固体及び気体の各種微小粒子径の混合物を粒径を制御した状態のものとして容易に提供する。【解決手段】非相溶性の液体Ａと液体Ｂを第１の液体微細化装置で混合・粉砕して、一定微小粒子径のＡ粒子を含む第１の混合物エマルジョン（Ａ・Ｂエマルジョン）を取得する第１工程と、液体Ｂと固体Ｚを固・液微細化装置で混合・粉砕して、一定微小粒子径のＺ固体粒子を含む固・液混合物からなる固・液混合物（Ｂ・Ｚ固・液混合物）を取得する第２工程と、液体Ｂと気体Ｘを気・液微細化装置で混合・粉砕して、一定微小サイズの粒子径のＸ気体粒子を含む気・液混合物からなる気・液混合物（Ｂ・Ｘ気・液混合物）を取得する第３工程と、以上の工程で得られた混合物を混合する第４工程とからなる。 例えば、液体Ａが重油、灯油等の液体燃料、気体Ｘが空気、窒素、水素であり、固体Ｚが石炭、穀類、銀又は金であってよい。【選択図】図１
