Ici Canada, Inc.

Marsulex Inc.

Russell I Derrah

Arthur R Shirley, Jr

Keith D Cochran

Zdzislaw M Tulimowski

Terence B Lynch

Sayeeda J Quadir

An apparatus and method for continuously producing polymer coated particles, and in particular, a polymer coated fertilizer, wherein the coating material used is, for example, an aqueous film forming latex. The coating process is conducted with a plurality of fluidized beds, connected in series, under conditions such that, preferably, the relative humidity of the air in the initial coating zones is maintained below the critical relative humidity of the particle to be coated. The apparatus and process provides a method to prepare coated particles having a narrow coating weight distribution, and thus allows for the economical production of a slow release fertilizer.

Apparatus and process for coating particles

An apparatus and method for continuously producing polymer coated particles, and in particular, a polymer coated fertilizer, wherein the coating material used is, for example, an aqueous film forming latex. The coating process is conducted with a plurality of fluidized beds, connected in series, under conditions such that, preferably, the relative humidity of the air in the initial coating zones is maintained below the critical relative humidity of the particle to be coated.

Multi-stage process for continuous coating of fertilizer particles

A process for the generation of chlorine dioxide from an alkali metal chlorate is provided that employs a waste sulphuric acid containing oxidizable organic material. Alkylation waste sulphuric acid from petroleum refining is particularly useful in this process. Conventional chlorate reducing agents used in the generation of chlorine dioxide can be partially or completely replaced by the organic material contained in the alkylation waste acid.

Growing community of inventors

Oakville, Canada

Russell I Derrah