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Sodium sulfide (Na2S) is mainly used as a sulfur source and reducing agent in the synthesis of sulfur dyes.

1. Baking method (dry process)Raw material selectionUse aromatic amines, phenols or nitro compounds mixed with sulfur or sodium polysulfide.Reaction conditionsContinue heating and melting at a high temperature of 200~250℃, and stir to fully vulcanize the raw materials until the product shows the ... Read More

What are the safety considerations of sodium sulfide in mining?

Hazardous Properties‌ Sodium sulfide is ‌corrosive‌ and releases toxic ‌hydrogen sulfide (H₂S)‌ gas upon contact with acids or moisture, posing risks of respiratory irritation, burns, and environmental contamination. Protective Measures‌ Personal Protective Equipment (PPE):‌ Chemical-resistant gl... Read More

Main Applications of Sodium Sulfide in Mining and Mineral Processing

Sodium sulfide (Na₂S) plays multiple roles in mining and mineral processing due to its chemical properties, serving as a critical reagent. Below are its specific applications and mechanisms: I. ‌Depressant for Sulfide Ore Flotation‌ Inhibition of Sulfide Minerals‌ High doses of sodium sulfide can... Read More

Caustic soda, scientifically known as sodium hydroxide, is a strong alkali with strong corrosiveness. It is widely used in industry, agriculture, life and other fields:​

I.Industry1. Papermaking industry: used to process wood raw materials, remove impurities such as lignin, separate cellulose, and produce high-quality paper. ​2. Textile printing and dyeing industry: Before dyeing cotton fabrics, the fabrics are treated with caustic soda solution to remove impurit... Read More

The main function of polyacrylamide

1. Wastewater treatmentFlocculation and precipitation: Polyacrylamide has a high molecular chain structure, which can form larger flocs of suspended particles in sewage through adsorption and bridging, accelerate the precipitation of particles, and thus achieve solid-liquid separation to purify s... Read More

‌Application of Sodium Sulfide in Mixed Concentrate Depressant Removal

‌I. Mechanism of Action‌‌1.Removal of Collector Coatings‌: Sodium sulfide (Na₂S) exhibits strong adsorption properties, effectively desorbing xanthate-type collectors from mineral surfaces. This disrupts the bond between collectors and minerals, achieving depressant removal.2‌.Inhibition of Resid... Read More

Sodium sulfide (Na₂S) has the following core applications in the dyeing and printing industry

Sodium sulfide (Na₂S) has the following core applications in the dyeing and printing industry: ‌1.Dyeing Auxiliary‌Acts as a solvent for sulfur dyes, promoting uniform dispersion and penetration of dyes into fibers, improving dyeing effectiveness and color fastness. ‌2.Raw Material for Sulfur Dye... Read More

Sodium hydrosulfide (NaHS) is mainly used as a reducing agent and dechlorinating agent in the printing and dyeing industry.

1. Reduction dissolution of sulfur dyesMechanism of action: Sulfur dyes are insoluble in water and need to be reduced to soluble leuco forms under alkaline conditions before they can be adsorbed on fibers. Sodium hydrosulfide (NaHS), as a strong reducing agent, can replace traditional sodium sulf... Read More

The use of sodium hydrosulfide solid (70% content) in mineral processing is mainly reflected in its role as a sulfiding agent and reducing agent.

1. Sulfidation in copper ore dressingSodium 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, whi... Read More

Use of Sodium Hydrosulfide in Leather

Sodium hydrosulphide (NaHS) plays a key role in leather processing. Its unique chemical properties make it an indispensable raw material in the dehairing and tanning processes. In the initial stage of leather production, raw hides need to be dehaired to remove hair and residual tissue. Sodium hyd... Read More

The main use of sodium hydrosulphide in mineral processing

Sodium hydrosulfide (NaHS) plays a key role in the field of mineral processing, especially in copper ore processing. Its role is mainly reflected in the selective regulation and surface modification of mineral flotation process. The following are its core application scenarios:Sulfide ore inhibit... Read More

Agricultural Applications of Methyl Disulfide (DMDS)

‌1. Soil Fumigation‌ Acts as a high-efficiency ‌soil fumigant‌ to control soil-borne pathogens such as nematodes, fungi, parasites, and other pathogenic microorganisms, reducing crop damage and significantly improving agricultural productivity‌. ‌2. Pest Control‌ ‌Contact and Stomach Poison ... Read More
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