The types segment of the Non‑ferrous Metal Flotation Agents market is organized around functional families—collectors, frothers, modifiers and depressants—each contributing a distinct share of reagent sales. Collectors, which represent the largest proportion (≈55 % of agent volume), are further divided into xanthates, dithiophosphates, carboxamides and amine‑based systems; xanthates dominate copper flotation, while dithiophosphates are preferred for lead and zinc due to their superior selectivity. Frothers, accounting for roughly 25 % of the market, include polymeric alcohols, fatty alcohols and glycol‑based compounds; polymeric frothers have gained traction in nickel circuits because of their low‑solids residue. Modifiers—comprising activators, inhibitors and dispersants—contribute about 15 % and are typified by lime, sodium cyanide and various polymeric dispersants that fine‑tune pulp chemistry. Depressants, the smallest category at around 5 %, consist of starches, tannins and organic acids used to suppress gangue minerals. The internal distribution of these sub‑types shapes R&D focus and pricing dynamics across the overall market, reinforcing the relevance of a detailed market taxonomy.