METHOD AND APPARATUS FOR COATING SMALL PARTICALE

摘要

The disclosure relates to a coating apparatus and process for coating small particles with the product of a source gas. The source gas is mixed with a diluent gas to form a flowing feed gas. An entrainment means (4) entrains small particles (2) to be coated in the feed gas and the feed gas with the small particles entrained is forced to flow through a furnace (18) which heats the particles and the source gas to a temperature sufficient for the source gas to decompose to produce a coating product. The coating product of the source gas plates out on the small particles, coating them. The coated small particles leave the furnace entrained in exhaust gases. A separation means (24) separates exhaust gases from the coated particles. These particles may be transported back into the entrainment means and reintroduced into the furnace for additional coatings.