Nitrogen Fertilizer 21%N Steel Grade Ammonium Sulphate
Steel Grade Ammonium Sulphate (21%N) is a high-quality nitrogen fertilizer with high nitrogen content, high purity and excellent stability, applicable for both industrial and agricultural purposes. Refined via the purification process of waste gas recovery from steel manufacturing, it features stable nutrient content, extremely low impurities and uniform, full crystals with nitrogen content steadily reaching 21%. It is a multi-functional ammonium sulphate product with outstanding cost performance. Compared with traditional chemically synthesized ammonium sulphate, steel-grade material boasts higher purity, more stable composition and better water solubility. It has advantages for both industrial raw material application and agricultural nutrient supplement. Widely applied in industrial deep processing, compound fertilizer production and large-scale farm cultivation, it serves as a highly versatile standardized nitrogen and sulfur nutrient raw material in the market.
1. Core Product Features
The product is characterized by stable content, high purity and superior physical and chemical properties. It contains standard 21% nitrogen and 24% sulfur with balanced and consistent nutrient indicators and minimal batch-to-batch difference. Sourced from the desulfurization and recovery system of steel plants, it undergoes multiple filtration, crystallization and drying treatments. It presents white color and uniform granules with low caking tendency and excellent water solubility, dissolving rapidly in water without residues, with purity far exceeding ordinary agricultural-grade products. The product has stable performance, low volatility and low moisture absorption, suitable for long-term storage and transportation without loss of active ingredients. In addition, it contains few impurities, moderate pH value and no harmful heavy metals. It can meet strict industrial production standards and be safely applied in agricultural fertilization, combining stability and safety.
2. Scope of Application
This product has wide applications for both industrial and agricultural sectors. Agriculturally, it acts as a premium basic nitrogen fertilizer for grain crops, cash crops, fruit trees, seedlings, vegetables and other cultivation scenarios. It rapidly supplies nitrogen and sulfur nutrients to promote seedling growth, stem development as well as yield and quality improvement. Industrially, it is widely used as raw material for compound fertilizers, complex fertilizers and organic fertilizers, and also applied in chemical manufacturing, printing and dyeing, electroplating, desulfurization and other industries. Compatible with various application methods including broadcasting, fertigation, drip irrigation and blending for deep processing, it is ideal for bulk procurement by large factories, large-scale farms and agricultural deep-processing enterprises.
3. Precautions for Application and Storage
Control the proper dosage during application and processing. Avoid excessive concentrated utilization to prevent adverse effects caused by excessive nutrient concentration. Store in dry, ventilated and cool warehouses. Prevent rain exposure, direct sunlight and moisture to avoid caking. Do not stack or use together with strongly alkaline materials to avoid nitrogen volatilization and reduction of active ingredients. Handle goods gently during transportation to reduce package breakage and moisture ingress and guarantee stable overall product quality.
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