Key words of the passage: single superphosphate; manufacture; uses; restrictions

SSP is one of the most cost effective forms of phosphate and supplies sulphate sulphur and calcium. The ratio of phosphorus and sulphur suits many crop and pasture needs. Both the phosphorus and sulphur are in readily available forms. Can be blended with other fertiliser products (except Urea & DAP). Can be stored easily for long periods, without taking up moisture. Contains calcium and sulphur keeping soil in good shape by maintaining structure, providing a balance of nutrients that mimics pasture growth. Impact SSP is manufactured in Australia.

Manufacture

Single Superphosphate is produced by reacting naturally occurring phosphate rock with sulphuric acid. This process converts insoluble phosphates into forms more readily available to plants.Phosphate Rock + Sulphuric Acid → Single Superphosphate

Impact Fertilisers' SSP manufacturing process uses blends of various rock phosphate rock sources. Critical steps in the process include:

Grinding the Phosphate Rock to the correct size

Accurately metering the Phosphate Rock, Sulphuric Acid, and water

Mixing together thoroughly

Time for the reactions to occur

The reacted material is fed into a granulation drum and across a screening process to produce granulated Single Superphosphate.The Single Superphosphate is then stored for a period of weeks to allow further reactions to occur within the product to maximise the proportion of available phosphate in the commercial product.

The cured Single Superphosphate is dried and screened prior to dispatch.

Uses

The product is a low cost source of phosphorus and sulphur in a wide range of pasture situations. SSP is a traditional product for supplying phosphorus and sulphur to pastures, the main two nutrients required for pasture production. Generally mixed with Sulphate of Ammonia and Muriate of Potash, but can be blended with other fertilisers.

Storage & Handling

Can be stored for relatively long periods (0 – 6 months).

Does not take up moisture from the air.

Can be used in a wide range of situations.

Restrictions

Particles may deteriorate in time so long-term storage (> 6 months) is not recommended.

Do not mix with Urea, DAP or products with a low critical humidity as products will deteriorate.

The presence of finer particles may cause problems such as blockages and uneven flow in some air-seeders designed for high analysis products.

Do not store in silos.