Gypsum (industrial grade)

Description

1. Product Overview
This industrial-grade gypsum (calcium sulfate dihydrate) is a critical mineral additive for cement retardation, wallboard manufacturing, and soil conditioning. Its key value proposition lies in precisely controlled purity (min. 85% CaSO₄·2H₂O) and consistent particle sizing, which directly improves production efficiency and end-product performance. As global construction and agricultural input markets face tightening quality standards, securing a reliable, high-uniformity gypsum supply is becoming a strategic differentiator for volume buyers.

2. Key Specifications & Technical Characteristics

• Chemical composition: Calcium sulfate dihydrate (CaSO₄·2H₂O) ≥85%; natural or synthetic (by-product derived, compliant with industrial use standards)

• Purity level: Industrial grade – min. 85%, max. moisture 10%

• Physical characteristics: Fine off-white to light gray powder; particle size 0–2 mm (customizable); bulk density 0.8–1.2 g/cm³

• Packaging options: 1.5 MT big bags, 50 kg multi-wall paper sacks, or bulk pneumatic tanker

• Shelf life: 12 months in dry, ventilated conditions (avoids premature hydration)

3. Core Industrial Applications

• Cement manufacturing: Acts as a set retarder in Portland cement – prevents flash set, improves workability. Performs better than low-purity gypsum due to consistent SO₃ content, reducing cement mill downtime.

• Drywall & plasterboard production: Provides crystallization control for board hardness and dimensional stability. Higher purity reduces kiln scaling and waste.

• Agriculture (soil amendment): Supplies calcium and sulfur for crop nutrition; improves soil structure in sodic or compacted soils. Cost advantage over mined specialty gypsum due to industrial by-product consistency.

• Dental plaster & industrial fillers: Used where controlled setting time and whiteness are less critical than mechanical uniformity – lowers raw material cost vs. premium grades.

4. Competitive Advantages

• Quality consistency: Every lot tested for purity, moisture, and particle size – C of A provided.

• Supply reliability: Multi-source feedstock (natural mine + synthetic from phosphate processing) ensures no single-point failure.

• Logistics capability: Dedicated dry-bulk terminals near major ports – 7-day lead time to most Asian and Middle Eastern hubs.

• Price competitiveness: Industrial-grade spec avoids “over-specifying” premium plaster grades, reducing landed cost by 12–18% for cement and board plants.

• Sustainability: Synthetic gypsum option diverts waste from phosphoric acid production (ISO 14001 certified facilities).

5. Commercial & Supply Information

• Minimum order quantity (MOQ): BULK 20 MT (one flexi-bag or loose container)

• Loading capacity: 20–24 MT per 20-ft dry container (bulk bagged) or 26–28 MT per 20-ft open-top container (loose pneumatic loading)