In the dynamic field of mineral processing, achieving high-grade concentrates while minimizing reagent consumption and environmental impact is a constant challenge. At Huixin Chemicals, we support global mining operations with reliable, high-purity Sodium Metabisulphite (Na₂S₂O₅)—a versatile chemical reagent essential for selective sulfide ore flotation and process control.
Sodium Metabisulphite is widely recognized in the industry for its role as a reducing agent and depressant. When dissolved in water, it releases sulfur dioxide (SO₂), which lowers the redox potential of the pulp and selectively passivates the surfaces of certain sulfide minerals—particularly pyrite (FeS₂). This prevents pyrite from floating alongside valuable copper, lead, or zinc sulfides, thereby significantly improving concentrate purity and reducing downstream smelting penalties.
Unlike generic alternatives, Huixin`s Sodium Metabisulphite is manufactured to stringent specifications, with a minimum assay of 98% and tightly controlled levels of impurities such as iron, chloride, and heavy metals. This consistency ensures predictable performance in complex flotation circuits, especially in polymetallic deposits common in regions like Peru, Chile, and Central Asia—markets where Huixin has long-standing partnerships.
Beyond depression, Sodium Metabisulphite also serves as an effective oxygen scavenger. By removing dissolved oxygen from process water, it helps maintain the stability of thiol collectors (such as xanthates) and prevents premature oxidation of sulfide mineral surfaces—a critical factor in maintaining recovery rates during extended retention times or in warm climates.
Huixin Chemicals` production facility operates under ISO 9001:2015 quality management standards, ensuring batch-to-batch reliability. Our technical team works closely with clients to tailor dosage recommendations based on ore mineralogy, pH, and circuit configuration—because optimal reagent use isn`t just about chemistry; it`s about context.
With over four decades of experience in industrial chemicals, Huixin supplies Sodium Metabisulphite not only as a standalone product but also as part of integrated reagent schemes that include xanthates, dithiophosphates, and frothers. This holistic approach reflects our business philosophy: “client-oriented, faith is root,” combined with a commitment to “quality innovation.”
As the mining industry moves toward greener, more efficient operations, precise reagent control becomes even more vital. Sodium Metabisulphite from Huixin Chemicals enables operators to achieve cleaner separations, reduce waste, and meet increasingly strict environmental regulations—all while protecting metallurgical performance.
For mining companies seeking a dependable, technically supported supplier of flotation reagents, Huixin Chemicals stands ready to deliver excellence—backed by science, experience, and global service.
Post time: Dec-29-2025