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Sodium Hydrosulfide (NaHS) is a highly versatile and effective reagent widely deployed in the complex flotation circuits of various ores. Formulated as a standard CAS-certified yellow flake solid, it boasts exceptional water solubility. When introduced to process water, these distinctive yellow flakes dissolve rapidly without leaving restrictive residues, ensuring immediate availability within the flotation cell. Depending on the specific mineralogical application, it acts dynamically as a sulfidizing agent, an activator, or a targeted depressant.
In the processing of copper-cobalt oxide ores, NaHS serves as an indispensable sulfidizing agent. It functions by forming a stable, visually dark metal-sulfide film across the surfaces of oxide minerals. This chemical transformation alters the surface tension and facilitates the rapid adsorption of collectors. Furthermore, the HS- ions released during dissolution are particularly effective at activating cobalt minerals associated with dense pyrite matrices, thereby substantially improving overall cobalt recovery rates.
Beyond activation, this reagent is heavily employed as a selective depressant for copper sulfide minerals during the intricate separation of copper-molybdenum (Cu-Mo) bulk concentrates. It functions by actively desorbing existing collectors from the copper mineral surfaces, modifying their physical properties to intentionally reduce floatability. To guarantee this precise chemical interaction, our manufacturing process maintains strict control over iron (Fe) and sodium sulfide (Na2S) impurities. By eliminating these unwanted elements, we prevent adverse ionic interference during the flotation cycle, ultimately securing superior concentrate grades and optimizing the selective recovery of valuable metals.
Sodium hydrosulfide serves as a highly efficient activator for challenging oxide minerals, particularly within copper-cobalt deposits. The dense metal-sulfide film generated by its HS- ions is crucial for enabling the subsequent attachment of collectors, directly translating to enhanced recovery volumes of valuable metals. Simultaneously, its capacity to function as a selective depressant in Cu-Mo separation allows metallurgical facilities to achieve a much cleaner, sharper division of complex poly-metallic ores.
The strategic application of this compound leads to significant reductions in overall reagent expenditure. When utilized in precise combination with organic depressants—such as sodium mercaptoacetate—the required dosage of NaHS can be substantially lowered. Documented processing plant data indicates consumption drops exceeding 57% in specific scenarios, all while maintaining stable process water pH and improving separation efficiency. As a widely available inorganic reagent, it presents a far more cost-effective alternative to expensive specialty organic chemicals.
To ensure predictable performance in your flotation cells, we guarantee strict batch-to-batch consistency. Every production run is backed by a comprehensive Certificate of Analysis (CoA). For facilities requiring stringent international compliance, we fully support verification through recognized third-party testing authorities, including SGS and Bureau Veritas (BV), ensuring that every delivery meets exact metallurgical expectations.
The precise chemical composition of a flotation reagent dictates its behavior and efficiency within the processing circuit. Our Sodium Hydrosulfide is engineered to meet rigorous industrial demands, providing a highly concentrated and stable formulation. The physical yellow flake morphology is intentionally designed to maximize the reactive surface area, promoting immediate dissolution while minimizing the generation of airborne dust during manual or automated handling procedures. Below are the verified technical specifications that guide its application.
| Item | Index |
| NaHS (%)≥ | 70 |
Maintaining a minimum active concentration of 70%, this reagent ensures that metallurgical plants can calculate their dosing requirements with absolute certainty, avoiding the pitfalls of under-dosing or excessive chemical waste.
Main Purpose: Sodium hydrosulfide is predominantly utilized within the intensive flotation of copper ore, acting to convert non-responsive copper oxides into highly floatable copper sulfide and cuprous sulfide structures. This conversion is the critical step that allows the target minerals to be successfully enriched via standard flotation techniques.
Proper containment is critical for maintaining the chemical stability and physical integrity of reactive solid reagents. Our baseline packaging utilizes the industry-standard 25kg/bag, constructed with heavy-duty, multi-layered moisture barriers to preserve the dry flake structure during transit.
Recognizing the diverse logistical requirements of global mining operations, we offer highly flexible packaging solutions. For large-scale facilities utilizing automated dosing systems, we supply custom 900kg to 1-ton jumbo bags. These bulk containers are hermetically sealed, highly resistant to tearing, and fully compliant with stringent international maritime transport standards, making them ideal for long-distance sea freight and extended storage in harsh environmental conditions.
Furthermore, strict adherence to safety compliance is paramount. Classified under UN 2949 as a Class 8 hazardous material, our product is accompanied by comprehensive Material Safety Data Sheets (MSDS). We provide detailed operational guidelines for safe handling and storage. Facilities are instructed to maintain well-ventilated, dry storage areas shielded from extreme heat, effectively mitigating any risk of premature hydrogen sulfide (H2S) gas release and ensuring a secure working environment for all plant personnel.
