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2. Phosphoric acid - Wikipedia

   en.wikipedia.org/wiki/Phosphoric_acid

   The wet process is the most common method of producing phosphoric acid for fertilizer use. [23] Even in China, where the thermal process is still used quite widely due to relatively cheap coal as opposed to the sulfuric acid, over 7/8 of phosphoric acid is produced with wet process. [24]

3. OCP Group - Wikipedia

   en.wikipedia.org/wiki/OCP_Group

   The OCP Group (OCP S.A.) (formerly Office Chérifien des Phosphates) is a state-owned phosphate rock miner, phosphoric acid manufacturer and fertilizer producer. [2] [3] Founded in 1920, the company has grown to become the world's largest producer of phosphate and phosphate-based products and it is one of the largest phosphate, fertilizer, chemicals, and mineral industrial companies in the ...

4. Urea phosphate - Wikipedia

   en.wikipedia.org/wiki/Urea_phosphate

   Urea phosphate is a 1:1 combination of urea and phosphoric acid that is used as a fertilizer. It has an NPK formula of 17-44-0, [1] and is soluble in water, producing a strongly acidic solution. Urea phosphate is available in fertilizer vendor bags that carry a UP signet on the packaging. It is sometimes added to blends which contain calcium ...

5. Phosphogypsum - Wikipedia

   en.wikipedia.org/wiki/Phosphogypsum

   Phosphogypsum stack located near Kėdainiai, Lithuania 55°14′47″N 24°01′44″E. Phosphogypsum (PG) is the calcium sulfate hydrate formed as a by-product of the production of fertilizer, particularly phosphoric acid, from phosphate rock. It is mainly composed of gypsum (CaSO 4 ·2H 2 O).

6. Superphosphate - Wikipedia

   en.wikipedia.org/wiki/Superphosphate

   Superphosphate is a chemical fertiliser first synthesised in the 1840s by reacting bones with sulfuric acid. The process was subsequently improved by reacting phosphate coprolites with sulfuric acid. Subsequently, other phosphate-rich deposits such as phosphorite were discovered and used. Soluble phosphate is an essential nutrient for all ...

7. Dipotassium phosphate - Wikipedia

   en.wikipedia.org/wiki/Dipotassium_phosphate

   Dipotassium phosphate (K 2 HPO 4) (also dipotassium hydrogen orthophosphate; potassium phosphate dibasic) is the inorganic compound with the formula K 2 HPO 4. (H 2 O) x (x = 0, 3, 6). Together with monopotassium phosphate (KH 2 PO 4. (H 2 O) x), it is often used as a fertilizer, food additive, and buffering agent. [1]