Methods for coating particulate material

A method for coating particulate material comprising:

• introducing the particulate material to a vessel having a top and a bottom, a vertically extending conduit having a conduit inlet in the vessel and a conduit outlet outside of the vessel, a first fluid inlet in the bottom of the vessel directed toward the inlet of the vertically extending conduit, a second fluid inlet in the bottom of the vessel, and a fluid outlet;
• introducing a first fluid into the first fluid inlet to produce a flow of the first fluid that produces a flow of at least some of the particulate material and the first fluid through the vertically extending conduit;
• introducing a second fluid to the second fluid inlet whereby the second fluid is introduced into the flow of the first fluid;
• coating at least some of the particulate material with the second fluid;
• and
• regulating a pressure drop across the conduit to control or regulate the flow through the conduit.