Multipurpose basic apparatus for treating powders

A multipurpose basic apparatus for treating powders which is applicable to various powder treatments including spray drying, fluidized bed drying and granulation and fluidized bed continuous drying, which apparatus comprises:

• a lower frame provided with a lower piping having two openings facing upward;
• an upper frame provided with an upper piping with two openings facing downward and respectively positioned in coaxially aligned relation to the two openings of the lower piping;
• a feed pump for a liquid provided on said upper frame;
• a feed pipe for pressurized air provided in one of said two openings in said upper frame;
• a lift mechanism for moving the upper frame up and down to provide a variable and settable spacing between said upper and lower frames;
• at least one material treatment chamber being connected between and in fluid communication with one opening of the lower piping and the corresponding coaxially aligned opening of the upper piping;
• at least one air modifying chamber being connected between and in fluid communication with at least one of the other openings of the upper and lower pipings;
• and
• an air circulating means for creating an air flow in said air modifying chamber.