High Quality Sodium Hydrosulfide Reagent for Copper Ore Flotation

Product Introduction

Sodium Hydrosulfide (NaHS) is a versatile and effective reagent widely used in the flotation of various ores. It acts as a sulfidizing agent, activator, and depressant, depending on the application. In the flotation of copper-cobalt oxide ores, NaHS serves as a key sulfidizing agent, enhancing the floatability of oxide minerals by forming a stable metal-sulfide film on their surfaces, which facilitates collector adsorption . Its HS- ions are particularly effective in activating cobalt minerals associated with pyrite, thereby improving cobalt recovery .

NaHS is also employed as a depressant for copper sulfide minerals during the separation of copper-molybdenum (Cu-Mo) bulk concentrates . It functions by desorbing collectors from copper mineral surfaces and modifying their properties to reduce floatability . Furthermore, NaHS can be used in combination with organic inhibitors (such as mercaptoacetic acid) to achieve targeted depression, which significantly reduces overall reagent consumption, mitigates negative impacts on water chemistry (e.g., maintaining stable pH in process water), and improves the selective recovery of valuable metals . This makes it a valuable reagent for optimizing separation efficiency and concentrate grades in complex ore processing.

Product Advantage

Sodium hydrosulfide (NaHS) serves as a highly efficient activator for oxide minerals, particularly in copper-cobalt ores . The HS- ions it releases in solution form a metal-sulfide film on mineral surfaces, which is crucial for enabling the subsequent adsorption of collectors and thereby enhancing the recovery of these valuable metals . Furthermore, NaHS can function as a selective depressant for specific sulfide minerals, such as copper sulfides in copper-molybdenum (Cu-Mo) separation, helping to achieve a cleaner and more effective separation of complex ores .

The application of NaHS can lead to significant reductions in reagent consumption，For instance, when used in combination with organic depressants like sodium mercaptoacetate, the overall dosage of NaHS required can be substantially lowered—in some documented cases by over 57%—while still maintaining or even improving separation efficiency . As a common and widely available inorganic reagent, NaHS is generally more cost-effective compared to many specialty organic chemicals, contributing to lower operational costs in mineral processing .

Technical Parameters

Product Uses

Main Purpose: Sodium hydrosulfide is mainly used in the flotation of copper ore to convert copper into copper sulfide and cuprous sulfide, which can be enriched by flotation.

Packing Specification

25kg/bag