Sodium Diisobutyl Dithiophosphate DSP-03 Collector for Selective Flotation Separation and Enhanced Silver Recovery with Minimal Frothing Interference

Sodium Diisobutyl Dithiophosphate, designated DSP-03, is a selective aqueous collector formulated for precise flotation separation of copper, silver, lead, and zinc sulfides in complex polymetallic ore processing circuits. Unlike xanthate collectors that exhibit broad collecting power across multiple sulfide minerals, DSP-03 offers significantly enhanced selectivity, particularly valuable for Mexican mining operations processing silver-lead-zinc ores where clean separation between galena, sphalerite, and pyrite is essential for producing marketable concentrate grades. The reagent demonstrates virtually no frothing characteristics, providing metallurgists with independent control over froth phase behavior through dedicated frother addition. This clean separation profile directly translates to higher smelter payable metal contents and reduced penalty element concentrations in final concentrates.

• Exceptional Selectivity for Silver and Copper: DSP-03 is notably more selective than thiol-based collectors including xanthates and mercaptans in the flotation of copper sulfides in the presence of zinc and iron sulfides. It also selectively floats copper-activated sphalerite from non-activated iron sulfides, a critical capability for complex Ag-Pb-Zn deposits where zinc minerals may be partially activated by dissolved copper ions from grinding media wear.
• Precious Metals Enhancement: The collector demonstrates strong affinity for native gold, electrum, silver sulfosalts, and platinum group minerals, making it an excellent supplementary reagent for improving precious metal recovery in base metal flotation circuits. When used in combination with xanthate collectors in appropriate ratios, DSP-03 boosts precious metal recovery by 2 to 6 percentage points without increasing iron sulfide contamination of the concentrate.
• Minimal Frothing Interference: The practically non-existent frothing characteristics of DSP-03 give plant metallurgists complete control over froth depth, stability, and flow rate through independent frother addition. This eliminates the common problem of xanthate-induced frothing variability that complicates circuit control and concentrate grade management.
• Fast Flotation Kinetics: DSP-03 exhibits rapid adsorption kinetics on target sulfide mineral surfaces, requiring shorter conditioning times than alternative collectors and enabling efficient recovery in the early rougher flotation cells where valuable minerals are most amenable to fast flotation. This kinetic advantage is particularly beneficial in high-throughput concentrators processing above 50,000 tons per day.
• Water-Soluble Liquid Formulation: Supplied as a 49 to 51 percent aqueous solution, DSP-03 is fully miscible in water at all process-relevant concentrations and can be dosed directly into the flotation circuit using standard metering pumps without pre-dilution or heated storage requirements.
• Reliable Large-Scale Supply: With 20,000 tons annual production capacity for the dithiophosphate series at our Shandong facility, we maintain buffer inventory for conventional products to ensure just-in-time delivery to mine sites across Mexico and Latin America.

DSP-03 is widely applied in selective flotation circuits for copper-activated iron sulfides, nickel-bearing minerals including pentlandite, antimony minerals such as stibnite, and chalcocite-rich copper ores. In Mexican silver-lead-zinc operations, DSP-03 is frequently employed as a secondary collector in the lead flotation circuit where it improves silver recovery into the lead concentrate without pulling additional zinc or iron, resulting in cleaner galena concentrates with higher payable silver content. For operations processing copper sulfides in the presence of pyrite, DSP-03 achieves superior copper grade at equivalent recovery compared to xanthate-only reagent schemes, reducing downstream smelter penalties for iron. In gold circuits treating auriferous pyrite, DSP-03 combined with xanthate provides optimized precious metal recovery while maintaining iron sulfide rejection to manage concentrate mass pull. The collector should be added after proper conditioning time in contact with the pulp to ensure efficient reaction with target mineral species.

DSP-03 is supplied in 1000-kilogram IBC drums with integrated dispensing connections, or 200-kilogram UN-approved steel drums for smaller operations. Each batch is tested for purity, pH, specific gravity, and flotation performance against certified reference ores before release. Our automated production facility maintains strict quality control from raw material receipt through finished product shipment. Technical support including laboratory-scale flotation testwork protocols, plant trial design, and metallurgical process optimization is available from our engineering team. Product should be stored between 5 and 40 degrees Celsius in sealed containers, protected from freezing. Shelf life is 12 months under recommended storage conditions.