mix powder

a lot depends on the relative density of these powders and the sizes, as the denser particles can settle down hrough the lighter in handling.

One way this is dealt with is by adding just enough volatile fluid that will not react with either material. This fluid can be chosen to be easily driven off with tolerable heat after mixing.

This will make a paste and you can use fully wipedsurface mixers that divide and mix for a long enough time to mix these materials properly. The surface tension of the wetting medium will prevent settling. a trace of a binder can be added.

The items are then pressed into their shape, heated to drive off the fluid without making vapour bursts that break up the preform. Light heat over a time period.

Once all vapor is gone they can be placed in the heat chamber and the vacuum or required gas atmosphere applied and the heat cycle and annealing done.

care must be taken to drive off the fluid as any trapped fluid will explode and ruin the part, so an experimental procedure will be needed to set these papameters

I have spent my entire carrier doing just this. The question that needs to be answered first is why are you mixing these materials and what is the intent of the mixture. Particle shape, size, bulk density, surface and chemistry are all integral parts in a composition, which will determine how, what, where and when. Research agglomeration, this will begin to describe the how.

At pharmaceutical trade shows, I have seen tumblers consisting of two large diameter tubes welded together in a V shape and spun slowly. I guess the idea is to concentrate the powders at the bottom of the V and when it turns, the mixture is split in half. Do this for a while and the mixture should be homogeneous.

They mix medical powders that way before compressing into pills. They HAVE to be uniform in dosage. And it seems easy and cheap to do at home.

The device you talking about is called a "V" blender. The purpose for the shape is to create a stationery volume for mixing and have a convent way of dumping the blended material. After the blending cycle you stop the blender with the cylinders at the bottom then remove the door at the bottom. When you slowly rotate the blender the material pours out slowly so you can control the quantity and prevent any dusting that might happen if blending fine powders.