Product Details
What is Dolomitic Hydrated Lime?
Dolomitic Hydrated Lime is a white, alkaline powder derived from natural dolomite (composed of calcium magnesium carbonate). It is produced by calcining dolomite at high temperatures (900–1000°C) and then hydrating the resulting quicklime with water. This process creates a compound primarily composed of calcium hydroxide (Ca(OH)₂) and magnesium oxide (MgO). Unlike regular hydrated lime, its unique calcium-magnesium hydroxide structure offers superior neutralizing power, stability, and versatility for industrial, agricultural, and construction use.
The product comes in three specialized types:
N-Type: High reactivity for acid neutralization and hazardous waste treatment.
S-Type: Ultra-fine particles for enhanced plasticity and water retention in construction.
SA-Type: Contains air-entraining additives for improved workability in mortars.
Key Benefits of Dolomitic Hydrated Lime
1. Superior Workability & Water Retention
S-Type: Fine particles (80–325 mesh) and high surface area ensure excellent plasticity, making it ideal for mortars and plasters. It locks moisture, prevents rapid drying, and strengthens material bonding.
SA-Type: Air-entraining agents improve pumpability, sand-carrying capacity, and ease of application in construction mixes.
2. High Neutralizing Capacity
N-Type excels in industrial settings, neutralizing acidic wastewater or stabilizing hazardous waste due to its low molecular-weight magnesium and rapid reactivity.
3. Soil Enhancement
Enriches soil with calcium and magnesium, balances pH, and accelerates organic decomposition for healthier crops.
4. Eco-Friendly & Versatile
Adjustable purity (>90% Ca(OH)₂·Mg(OH)₂) and customizable particle sizes meet diverse industrial needs.
Technical Specifications
| Parameter | Specification |
|---|---|
| Chemical Composition | Ca(OH)₂ ≥65%, Mg(OH)₂ ≥25% |
| Particle Size | 80. 200. 325 mesh (customizable) |
| Packaging | 50 lb, 1000 lb, 2000 lb bags or bulk(Customizable) |
| Storage | Cool, dry area; avoid acids |
| Shelf Life | 12 months |
Production Process
Raw Material Selection: We choose high-purity dolomite ore and crush it into uniform particles.
Calcination Decomposition: The ore is calcined in a rotary kiln at 900 – 1000℃, producing a mixture of calcium oxide and magnesium oxide (quicklime).
Hydration Reaction: Quicklime reacts with water in precise proportions to form a homogeneous complex of calcium hydroxide and magnesium hydroxide.
Fine Processing: We control the powder fineness through air classification or ball milling, ensuring product activity and flowability.
Applications：What is dolomitic hydrated lime used for?
Industrial Uses
- Water Treatment: It adjusts pH, softens water, and removes heavy metal ions.
- Flue Gas Desulfurization: It efficiently adsorbs sulfur dioxide, reducing industrial exhaust pollution.
- Sugar and Paper Industries: It serves as a clarifying agent and bleaching aid.
Agriculture and Environmental Protection
- Soil Remediation: As a soil amendment, it enriches the soil with calcium and magnesium, regulates pH, and promotes crop growth.
- Solid Waste Treatment: It stabilizes hazardous waste, reducing the risk of heavy metal leaching.
Construction Industry
- Mortar: It’s used to make high-quality lime-based mortar, which bonds strongly when mixed with sand and cement.
- Plaster and Render: Finely ground S type hydrated spray lime, with its fine particle size and white color, is perfect for plastering.
- Subgrade Stabilization: It improves soil structure, enhancing road bearing capacity.
Special Applications
It’s used in ship anti-corrosion, coating cargo holds to prevent salt corrosion.
FAQs
Jintai factory – Trusted Hydrated Lime Supplier – produces eco-friendly dolomitic lime for construction, agriculture, and pollution control. For additional information, to view our Product Typical Sheets, or to discuss availability with our sales group, please contact us.
