| CPC B02C 23/36 (2013.01) [B02C 17/18 (2013.01); C06B 21/0066 (2013.01); C06B 33/00 (2013.01)] | 15 Claims |

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1. A method of preparing spherical composite powders, the method comprising:
introducing one or more starting material powders into an agitation mill that includes one or more milling balls;
introducing a process control agent into the agitation mill, the process control agent including at least two immiscible liquids; and
agitating and milling the one or more starting material powders with the one or more milling balls and the process control agent with the agitation mill to produce spherical composite powders within emulsion droplets formed by the at least two immiscible liquids.
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