The conductive composition includes: a metal particle; and a treatment agent for coating the metal particle. The treatment agent is at least one kind selected from the group consisting of: a compound represented by the general formula (1); a compound represented by the general formula (2); a compound represented by the general formula (3); a compound represented by the general formula (4); a compound represented by the general formula (5); a compound represented by the general formula (6); and a compound represented by the general formula (7). The method of producing the conductive composition includes: a first step of reducing a metal salt in an aqueous medium to form the metal particle; and a second step of bringing the formed metal particle into contact with the treatment agent.

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The invention relates to a method for preparing waste powder from generative production processes, by means of which three-dimensional objects are produced in layers from a powdery base material. The aim of the invention is to provide a method for the combined mechanical and material preparation of waste powder, wherein the waste powder is brought into such a structure that subsequently, by mixing with or even without new powder or mixtures of new and waste powders, a high-quality powdery material becomes available for generative production processes. This aim is achieved in that the waste powder is subjected to a mechanical treatment by reducing the waste powder to small pieces with a grinding mill.

The invention relates to a method for preparing waste powder from generative production processes, by means of which three-dimensional objects are produced in layers from a powdery base material. The aim of the invention is to provide a method for the combined mechanical and material preparation of waste powder, wherein the waste powder is brought into such a structure that subsequently, by mixing with or even without new powder or mixtures of new and waste powders, a high-quality powdery material becomes available for generative production processes. This aim is achieved in that the waste powder is subjected to a mechanical treatment by reducing the waste powder to small pieces with a grinding mill.

In one aspect, grade powder compositions are described herein comprising electrochemically processed sintered carbide scrap. In some embodiments, a grade powder composition comprises a reclaimed powder component in an amount of at least 75 weight percent of the grade powder composition, wherein the reclaimed carbide component comprises electrochemically processed sintered carbide scrap.

A powder recycling system includes a supply tank, a continuous loss-in-weight module, a pneumatic module, a transfer channel, a recycle module, and a refilling tank. The supply tank accommodates recycling powder. The continuous loss-in-weight module includes a storage tank receiving the recycling powder from the supply tank and a rotary output pipe connected to the storage tank to output the recycling powder. The continuous loss-in-weight module controls the mass flow rate of the output of the recycling powder according to the weight change of the storage tank. The pneumatic module enables the recycling powder to float and move in the transfer channel. The recycle module is connected to the transfer channel to receive the recycling powder, sieves the recycling powder, provides virgin powder, and mixes the virgin powder with the recycling powder. The refilling tank is connected to the recycle module to receive the recycling powder and the virgin powder.

A method for creating nanoparticles directly from bulk metal by applying ultrasound to the surface in the presence of a two-part surfactant system. Implosive collapse of cavitation bubbles near the bulk metal surface generates powerful microjets, leading to material ejection. This liberated material is captured and stabilized by a surfactant bilayer in the form of nanoparticles. Nanoparticles can be produced regardless of the bulk metal form factor. The method is generally applicable of metals and alloys. The method can be applied to an environmentally important problem, the reclamation of gold from an electronic waste stream.

A system includes a mobile platform that includes a metal powder production machine that receives solid and continuous metal and outputs a metal powder. The mobile platform further includes an additive manufacturing system that receives the metal powder and outputs a manufactured component.

A system includes a mobile platform that includes a metal powder production machine that receives solid and continuous metal and outputs a metal powder. The mobile platform further includes an additive manufacturing system that receives the metal powder and outputs a manufactured component.

In one aspect, grade powder compositions are described herein comprising electrochemically processed sintered carbide scrap. In some embodiments, a grade powder composition comprises a reclaimed powder component in an amount of at least 75 weight percent of the grade powder composition, wherein the reclaimed carbide component comprises electrochemically processed sintered carbide scrap.

In one aspect, grade powder compositions are described herein comprising electrochemically processed sintered carbide scrap. In some embodiments, a grade powder composition comprises a reclaimed powder component in an amount of at least 75 weight percent of the grade powder composition, wherein the reclaimed carbide component comprises electrochemically processed sintered carbide scrap.