Draft Tube Baffle (DTB) Crystallizer

For superior control over particle size when excessive fine crystals are present, the Swenson Draft Tube Baffle (DTB) crystallizer has been proven highly effective. This type of crystallizer is used primarily in the production of a variety of large-size crystalline materials such as Ammonium Sulfate, Potassium Chloride and Diammonium Phosphate for the fertilizer industry.

The DTB crystallizer is built in both the adiabatic cooling and evaporative types and consists of a body in which growing crystals are circulated from the lower portion to the boiling surface by means of a large, slow-moving propeller circulator. Surrounding the suspended magma is an annular settling zone from which a stream of mother liquor bearing fine crystals can be removed. These fines are separated from the growing suspension of crystals by gravitational settling in the annular baffle zone.