Coated Calcium Carbonate Powder Supplier from China
Surface-treated coated calcium carbonate powder with stearic acid for improved dispersion, hydrophobicity, and polymer compatibility in plastics and rubber.
Dolomitic Limestone
Jintai supplies high-quality dolomitic limestone rich in magnesium carbonate (CaMg(CO₃)₂), ideal for steel refining, agriculture, and construction. With customizable particle sizes and reliable quality control, we provide global buyers with consistent, high-Mg limestone solutions backed by technical documentation and flexible logistics.
What is Calcium Carbonate Used for in Construction?
Introduction: The Mineral That Builds Our World Calcium carbonate (CaCO₃), a naturally abundant mineral found in limestone, marble, and marine shells, has been the backbone of construction for millennia. Today, it bridges ancient techniques and modern innovations, offering solutions from high-strength concrete to carbon-negative materials. As the world shifts toward sustainability, calcium carbonate is redefining how we build—stronger, greener, and smarter. Traditional Applications: The Pillars of Construction 1. Cement, Concrete & Asphalt Cement Production: Limestone (CaCO₃) is calcined to produce lime (CaO), a key component of Portland cement. Concrete Enhancement: Adding 10%-15% ultrafine CaCO₃ (particle size <10μm) improves early compressive strength by 8%-12% (Cement and Concrete Research) and reduces shrinkage cracks. Asphalt Optimization: CaCO₃ enhances aggregate adhesion, extending road durability. 2. Functional Fillers & Architectural Solutions Paints & Coatings: Replaces 30%-40% titanium dioxide, achieving >10.000 scrub cycles (ASTM D2486) and reducing costs. PVC Building Materials: 40%-60% CaCO₃ increases rigidity (elastic modulus +15%-25%) in pipes and profiles. Fireproof Boards: CaCO₃-based panels (density <1.5 g/cm³) with Class A1 fire resistance for partitions and ceilings. Innovation Frontiers: Sustainable & High-Performance Solutions 1. Calcium Carbonate Whiskers Micro-Crack Bridging: Adding 1%-2% whiskers (length 1–6 μm, diameter ~1 μm) boosts concrete flexural strength by 30% . Polymer Composites: Increases tensile strength by 54%, ideal for lightweight, high-strength facades. 2. Eco-Technologies Enzyme-Induced Carbonate Precipitation (EICP): Binds loose soils using plant-derived enzymes, consuming 80% less energy than cement grouting . Bio-Concrete: Microbial CaCO₃ mineralization transforms urea waste into 50 MPa-strength materials, cutting cement-related CO₂ by 80% . 3. Carbon-Negative Materials CO₂ Sequestration: Jintai Group’s collaboration with CarbonCure injects captured CO₂ into concrete, reducing emissions by 10% per cubic meter . Why Choose Chinese Calcium Carbonate Suppliers? China produces 65% of global calcium carbonate, offering unmatched advantages: 1. Cost Efficiency & Quality Competitive Pricing: 30-50% lower than EU/US suppliers due…
What is the difference between dolomite lime and hydrated lime?
Lime-based products are indispensable in agriculture, construction, and environmental management. However, dolomite lime and hydrated lime are often confused despite their distinct chemical compositions, reactivity, and applications. Misusing hydrated lime, for instance, can over-alkalize soil, while dolomite lime’s magnesium content makes it ideal for magnesium-deficient soils. This article breaks down their key differences and provides actionable guidance for choosing the right product. 1. What Is Dolomite Lime? Dolomite lime is a natural limestone rock composed primarily of calcium magnesium carbonate (CaMg(CO₃)₂). It is mined, crushed, and ground into powder for various uses. 🔹 Key Features: Contains both Ca and Mg: Ideal for soils deficient in magnesium Slow pH adjustment: Works gradually over time Safe to handle: Low causticity compared to hydrated lime ✅ Common Uses: Soil conditioning in agriculture pH adjustment in aquaculture and water treatment Environmental remediation (e.g., acid-neutralizing in mines) 2. What Is Hydrated Lime? Hydrated lime, also known as slaked lime, is chemically calcium hydroxide (Ca(OH)₂). It is made by adding water to quicklime (CaO), creating a highly alkaline, fast-acting material. 🔹 Key Features: Highly reactive: Rapid pH elevation and neutralization Strong alkalinity: Ideal for disinfection and chemical processes Fine powder texture: Easily dispersible in water ✅ Common Uses: Water and wastewater treatment Flue gas desulfurization in power plants Soil stabilization and asphalt modification Neutralization of acidic industrial waste 3. Chemical Composition Comparison Property Dolomite Lime Hydrated Lime Main Composition CaMg(CO₃)₂ Ca(OH)₂ Calcium Content (CaO) ~30–34% >70% Magnesium Content (MgO) ~18–22% 0% pH in Solution ~8.5–9.5 ~12.5 Solubility Low High 4. Reactivity & Handling Differences Hydrated lime is much more reactive and caustic. It can cause skin and eye irritation, and must be handled with PPE (Personal Protective Equipment). Dolomite lime is safe to apply manually, commonly used by farmers without industrial precautions. Storage: Hydrated lime requires airtight storage to prevent…
Custom Light Calcium Manufacturer – China Factory Supply
Custom light calcium carbonate from China factory, exported to Asia and Middle East markets.
How to Increase Whiteness of Calcium Carbonate? Key Factors and Solutions
Discover key methods to enhance calcium carbonate whiteness, from iron removal to advanced bleaching techniques.
What Are the Different Types of Calcium Carbonate?
Calcium carbonate exists as PCC (chemically refined), GCC (mechanically ground), and NCC (nano-engineered). PCC offers high purity for premium uses, GCC excels in cost-sensitive industries, and NCC drives innovation in biomedicine and eco-materials. This guide compares their properties, applications, and selection criteria, empowering industries to optimize performance and cost-efficiency.
What Is Calcium Carbonate Use for in Construction? Core Applications & Innovations
What Is Calcium Carbonate? What Is Calcium Carbonate Use for in Construction? Calcium carbonate (CaCO₃) is a versatile mineral compound widely used in construction as a functional filler, strength enhancer, and sustainability driver. Among its most common forms is finely ground limestone powder, sourced from limestone, marble, or industrial byproducts. This material alone accounts for over 200 million tons of annual consumption in building materials, powering innovations in coatings, concrete, wall panels, and synthetic stone. Calcium Carbonate in Architectural Coatings: The Science Behind Wall Aesthetics As a key functional filler, calcium carbonate dominates architectural coatings, improving both performance and cost-efficiency. Key Benefits: Enhances hiding power, abrasion resistance, and surface smoothness. Reduces VOC emissions and material usage. Case Studies: Nano CaCO₃ in Nippon Paint’s ‘Odorless 120’ series: 80-100nm particles boost hiding power by 30%, cut coating usage by 18%, and achieve VOC <10g/L (French A+ certified). Three Trees’ Graphene-Modified CaCO₃ Coating: Reduces thermal conductivity by 40%, winning the 2023 Geneva Invention Award. Market Impact: China’s architectural coatings consume over 6 million tons of CaCO₃ annually, with premium products featuring 35-45% filler content and a 9.2% annual growth rate. Calcium Carbonate in Ready-Mix Concrete: Balancing Strength and Sustainability In concrete, CaCO₃ acts as a microfiller and aggregate modifier, optimizing multi-dimensional performance. Technical Advantages: Fills cement particle gaps to enhance density, impermeability, and compressive strength. Reduces carbon footprint via partial cement substitution. Innovative Formulations: China National Building Material Group’s C80 High-Strength Concrete: 10% cement replaced by CaCO₃ micropowder (450m²/kg surface area) boosts strength to 92MPa and cuts carbon emissions by 18kg/m³. China Resources Cement’s Hong Kong-Zhuhai-Macao Bridge Project: CaCO₃ nucleation activation technology achieves ±15-minute setting time control, chloride ion diffusion coefficient ≤1.8×10⁻¹²m²/s, and 7.3% cost savings. Calcium Carbonate in New-Generation Wall Materials: The Building Blocks of Green Construction CaCO₃ enhances the durability and sustainability of lightweight wall…
Top 5 Technical Requirements for Precipitated Calcium Carbonate You Must Know
This article details the top five technical requirements for precipitated calcium carbonate (PCC), covering chemical composition, physical properties, and thermal – chemical stability. It explains how purity, impurity control, particle size, and other factors impact PCC performance. Additionally, it introduces Jintai, a renowned manufacturer, whose PCC products adhere to these requirements for diverse industrial applications.
