What are floating agents, and explain three steps in the Flotation process? Phosphoric acid is produced via a variety of techniques. Dihydrate phosphoric acid or semi-hydrate phosphoric acidare often concentrated to an appropriate level for future usage using several steps of evaporative processes and combinations thereof, the majority of which are well known by those knowledgeable in the art. During such evaporation procedures, the resultant phosphoric acid is further concentrated to varied acid strengths ranging from 40-42% to 72-76% acid. Read More: https://naqglobal.wixsite.com/chemical-fertilizer/post/what-floating-agents-explain-three