A method of processing finely divided reactive particulates (R.sub.Particulate) and forming a product comprising: providing a composite material comprising finely divided reactive particulates (R.sub.Particulate) dispersed in a protective matrix; at least partially exposing the finely divided reactive particulates (R.sub.Particulate); and forming the product.

A method of processing finely divided reactive particulates (R.sub.Particulate) and forming a product comprising: providing a composite material comprising finely divided reactive particulates (R.sub.Particulate) dispersed in a protective matrix; at least partially exposing the finely divided reactive particulates (R.sub.Particulate); and forming the product.

Systems and methods for recovering material from a gas phase are provided. Exemplary systems include a moving bed of particles onto which material can be deposited. The systems can operate in a continuous or semi-continuous mode.

Systems and methods for recovering material from a gas phase are provided. Exemplary systems include a moving bed of particles onto which material can be deposited. The systems can operate in a continuous or semi-continuous mode.

The present invention relates to a method and device for preparing an ultrathin metal lithium foil. With regard to the problems of lithium preparation processes in the prior art having a high lithium preparation reaction temperature, a low lithium recovery rate, low purity in collected lithium foils, a complicated process operation, etc., the present invention provides a method for preparing an ultrathin metal lithium foil, wherein firstly, a complex lithium salt is prepared, the complex lithium salt and a reducing agent are then subjected to a vacuum thermal reduction reaction so as to generate a metal vapor, the metal vapor is then subjected to vacuum distillation, and finally, vacuum evaporation is used to prepare the ultrathin metal lithium foil of the present invention. In the present invention, by precisely regulating and controlling conditions such as the formulation of the complex lithium salt, the thermal reduction reaction temperature, the temperature of a distillation device, the vacuum degree, materials and the reducing agent, vacuum reduction, vacuum distillation and vacuum evaporation are continuously performed, and lithium preparation, distillation purification, and evaporation can thus be continuously performed, thereby improving the efficiency of the production of the ultrathin metal lithium foil and saving on preparation costs.

The present invention relates to a method and device for preparing an ultrathin metal lithium foil. With regard to the problems of lithium preparation processes in the prior art having a high lithium preparation reaction temperature, a low lithium recovery rate, low purity in collected lithium foils, a complicated process operation, etc., the present invention provides a method for preparing an ultrathin metal lithium foil, wherein firstly, a complex lithium salt is prepared, the complex lithium salt and a reducing agent are then subjected to a vacuum thermal reduction reaction so as to generate a metal vapor, the metal vapor is then subjected to vacuum distillation, and finally, vacuum evaporation is used to prepare the ultrathin metal lithium foil of the present invention. In the present invention, by precisely regulating and controlling conditions such as the formulation of the complex lithium salt, the thermal reduction reaction temperature, the temperature of a distillation device, the vacuum degree, materials and the reducing agent, vacuum reduction, vacuum distillation and vacuum evaporation are continuously performed, and lithium preparation, distillation purification, and evaporation can thus be continuously performed, thereby improving the efficiency of the production of the ultrathin metal lithium foil and saving on preparation costs.

An object of the present invention is to provide a method for separating Dy and Tb from an alloy containing Dy and Tb as constitutional metals without using a solvent extraction method. The method of the present invention as a means for resolution is characterized by comprising vaporizing Dy by subjecting the alloy to a heat treatment in an atmosphere of a pressure Pt(Pa) that, when a DyTb composition in the alloy is Dy.sub.xTb.sub.y (atomic composition ratio) and a heat treatment temperature is t, satisfies formula 1: Pt.sub.Tb<Pt<Pt.sub.Dy(x/(x+y)), wherein Pt.sub.Dy is a vapor pressure (Pa) of Dy alone at the temperature t and Pt.sub.Tb is a vapor pressure (Pa) of Tb alone at the temperature t.

A method for refining a titanium material, in which oxygen contained in a titanium material made of a pure titanium, a titanium alloy or an intermetallic compound containing titanium as one of main components is removed, the method includes: a first melting step of melting the titanium material under a noble gas atmosphere containing 5 to 70 vol % of hydrogen, thereby introducing hydrogen into a melt of the titanium material; and a second melting step of melting the titanium material into which hydrogen has been introduced in the first melting step under a noble gas atmosphere, thereby removing oxygen contained in the titanium material from the melt of the titanium material together with the hydrogen. Each of the first melting step and the second melting step is carried out at least once.

A method for refining a titanium material, in which oxygen contained in a titanium material made of a pure titanium, a titanium alloy or an intermetallic compound containing titanium as one of main components is removed, the method includes: a first melting step of melting the titanium material under a noble gas atmosphere containing 5 to 70 vol % of hydrogen, thereby introducing hydrogen into a melt of the titanium material; and a second melting step of melting the titanium material into which hydrogen has been introduced in the first melting step under a noble gas atmosphere, thereby removing oxygen contained in the titanium material from the melt of the titanium material together with the hydrogen. Each of the first melting step and the second melting step is carried out at least once.

The present invention relates to a method (1) of producing a metal superalloy (10) comprising the steps of providing a charge of metal materials (2); melting said charge of metal materials (2) in an electric-arc furnace (3) to obtain a first melt (3A) of said charge of metal materials (2); solidifying (5) said first melt (3A) to obtain first ingots (5A); melting said first ingots (5A) in a V.I.D.P. furnace (6) to obtain a second melt (6A); solidifying (7) said second melt (6A) to obtain second ingots (7A); melting said second ingots (7A) in a V.A.R. furnace (8) to obtain a third melt (8A); solidifying (9) said third melt (8A) to obtain a metal superalloy (10). The method (1) is characterized in that the charge of metal materials (2) has a weight amount ranging from forty to sixty tons, and it includes a step of carrying out an A.O.D. treatment (4) on said first melt (3A) to obtain a decarburized and refined first melt (4A); said melting in the V.I.D.P. furnace (6) and said melting in the V.A.R. furnace (8) are carried out sequentially on said first melt (4A) resulting from said A.O.D. treatment (4).