Part 1 of a 5-part blog series: “The Bradley Broadfield superphosphate process”
The Broadfield process has remained a mainstay of the global phosphate industry since its introduction in the 1930s. Ian Hancock, Vice President Sales & Operations, Bradley Pulverizer, explains its continuing success in superphosphate production worldwide. Click Here to download the complete article in pdf format as published by BCInsight Ltd in Fertilizer International Sept|Oct 2022, issue 510, pp. 31-35.
The Bradley Broadfield process is the global standard for single super phosphate (SSP) manufacturing. Its flexible and reliable design is based on more than 100 years of SSP manufacturing experience and can produce SSP economically from all known phosphate rock sources. The process is also used to make:
- Triple superphosphate (TSP)
- Monoammonium phosphate (MAP)
- Diammonium phosphate (DAP)
- Monocalcium phosphate (MCP)Dicalcium phosphate (DCP)
- Partially acidulated phosphate
- Synthetic gypsum
- Iron sulphate
- Other acidic salts
Bradley’s Broadfield process has been the workhorse of the phosphate fertilizer industry since 1936 and is offered in two designs:
- The Broadfield Den – typically used in applications of more than 30 t/h capacity
- The Broadfield Belt Den – its smaller ‘cousin’ for applications of less than 30 t/h capacity
These two process options have been successfully employed worldwide to produce SSP, TSP, MAP and other finished phosphates. Its latest application is the production of partially acidulated superphosphate, a slow-release fertilizer used in end markets such as forestry. Bradley’s long experience with the process has allowed the basic concept to be modified to suit individual products and the requirements of each manufacturer. The capacities and types of Broadfield Den design have also been expanded, with current models being able to offer maximum flexibility at the most economic cost. These intrinsic strengths make the Broadfield process ready to cater for industry changes over the next 85 years.
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