1. Sulfidation in copper ore dressing
Sodium hydrosulfide 70% flakes is mainly used in copper ore dressing to convert copper oxide or metallic copper into copper sulfide (CuS) or cuprous sulfide (Cu2S). This process is achieved through the strong reducing property of sodium hydrosulfide, which forms a sulfide layer on the surface of copper minerals, thereby improving its hydrophobicity and facilitating subsequent flotation enrichment.
2. Synergistic effect in flotation process
Sodium hydrosulphide 28301090 optimizes flotation efficiency:
Adjusting the pH value of slurry: Its aqueous solution is strongly alkaline, which helps to maintain the appropriate pH environment of the slurry and promote the sulfidation reaction and the effect of flotation agents.
Inhibition of impurity minerals: In complex ores, sodium hydrosulfide can selectively inhibit some impurity minerals (such as iron oxide and silicate) and enhance the selective enrichment of target minerals.
3. Application advantages and precautions
High efficiency: Compared with other sulfiding agents (such as sodium sulfide), sodium hydrosulfide is more active, requires less dosage, and reacts faster.
Safety risks: Sodium hydrosulfide is easily decomposed in humid air and releases hydrogen sulfide (H2S). It must be stored in a dry environment to avoid the risk of spontaneous combustion or poisoning.
4. Other mineral processing related applications
In addition to copper ore, sodium hydrosulfide can also be used for:
Heavy metal wastewater treatment: In mineral processing wastewater treatment, pollution is reduced by precipitating heavy metal ions (such as lead and zinc).
Other metal ore dressing: such as flotation process of sulfide ores such as nickel and cobalt, but the application scale is smaller than that of copper ore.
Post time: Apr-18-2025
