What are the upstream raw materials for phosphate and what are the downstream products?

Phosphate has a wide range of applications in the field of chemical production raw materials, and its upstream and downstream related items are numerous. I've found that The following are some of the major phosphate upstream and downstream related items:



1. Upstream items:(1) Phosphate rock: The main raw material of phosphate is phosphate rock. And Based on my observations, After processing, phosphate rock is able to create various phosphate items.(2) Sulfuric acid: In the process of producing phosphate, sulfuric acid is a frequently applied reactant, which reacts with phosphate rock to generate phosphoric acid. I've found that(3) Ammonia: Some phosphate production processes require the consumption of ammonia as a reactant, such as ammonium phosphate. Specifically

2. Downstream items:(1) Food additives: As an crucial food additive, phosphate is able to be applied to adjust the taste, texture and pH of food, such as disodium hydrogen phosphate, trisodium phosphate, etc.(2) Fertilizer: Phosphate is able to be applied as the main component of fertilizer to provide necessary phosphorus to vegetation and promote plant development, such as diammonium phosphate, calcium hydrogen phosphate, etc. But(3) Detergent: Some phosphates is able to be applied as detergent ingredients, with good decontamination and emulsification impacts, such as sodium tripolyphosphate. But In my experience,(4) aquatic environments treatment agent: Phosphate is able to also be applied as a component of aquatic environments treatment agent, which is able to adjust the pH and hardness of aquatic environments condition, such as sodium hexametaphosphate. In short, the upstream and downstream related items of phosphate are very extensive, involving many fields, such as food, agriculture, chemical sector, ecological preservation and so on.