Processing sinter helps eliminate raw flux, which is a binding material used to agglomerate materials, which saves the heating material, coke, and improves furnace productivity.
In theory, this does not affect the density of the final product, though flow difficulties and the tendency of nanoparticles to agglomerate complicates matters.
Powder and liquid mixing systems are capable of rapidly incorporating large quantities of powders at high concentrations agglomerate free and fully hydrated.