dolomite powder

Global Dolomite Powder Market: An In-Depth Sourcing & Industry Guide

Dolomite powder, a mineral compound composed of calcium magnesium carbonate (CaMg(CO₃)₂), is a critical raw material across multiple industries, including construction, agriculture, glass manufacturing, ceramics, steelmaking, and water treatment. Its unique properties—high brightness, good chemical resistance, and thermal stability—make it indispensable for applications like flooring, wall putty, and refractory bricks. The global dolomite market has experienced steady growth, driven by urbanization and industrial expansion. This guide provides a comprehensive analysis of the global supply chain, top manufacturers, pricing trends, and strategic sourcing advice for 2026.

Top 10 Global Dolomite Powder Suppliers & Factories (2026 Ranking)

The global dolomite market is fragmented, with key producers concentrated in regions with rich mineral deposits. The following ranking is based on production capacity, export volume, and market reputation.

Rank	Company Name	Country	Annual Capacity (Million Tons)	Key Specialization
1	Lhoist Group	Belgium	12+	High-purity industrial dolomite
2	RHI Magnesita	Austria	8+	Refractory-grade dolomite
3	Carmeuse	Belgium	7+	Construction & agriculture
4	Imerys	France	5+	Ceramics & glass
5	Minerals Technologies Inc.	USA	4+	Specialty minerals
6	Sibelco	Belgium	4+	Glass & ceramics
7	Omya AG	Switzerland	3.5+	Filler-grade dolomite
8	Nordkalk Corporation	Finland	3+	Environmental applications
9	Graymont Limited	Canada	2.5+	Steel & construction
10	JFE Mineral Company	Japan	2+	High-purity for steelmaking

Top 10 Dolomite Powder Suppliers & Factories in China (2026)

China is the world’s largest producer and exporter of dolomite powder, with major clusters in Liaoning, Hebei, and Guangxi provinces. The following list highlights leading Chinese manufacturers known for quality and export reliability.

Rank	Company Name	Location (Province)	Annual Capacity (Million Tons)	Main Products
1	Haicheng Xinda Mining Co., Ltd.	Liaoning	1.5+	High-grade dolomite for steel
2	Lingshou County Huayuan Mineral Co., Ltd.	Hebei	1+	Dolomite powder for construction
3	Guangxi Longsheng Mining Co., Ltd.	Guangxi	0.8+	Agricultural dolomite
4	Dandong Tianci Mining Co., Ltd.	Liaoning	0.7+	Refractory-grade dolomite
5	Shijiazhuang Hongji Mining Co., Ltd.	Hebei	0.6+	Ultra-fine dolomite powder
6	Zibo Longtai Chemical Co., Ltd.	Shandong	0.5+	Ceramic-grade dolomite
7	Hubei Yichang Changlin Mining Co., Ltd.	Hubei	0.4+	Glass-grade dolomite
8	Jiangxi Pingxiang Mining Co., Ltd.	Jiangxi	0.3+	Construction filler
9	Yunnan Kunming Fengyuan Mining Co., Ltd.	Yunnan	0.3+	Agricultural & soil conditioner
10	Anhui Chaohu Mining Co., Ltd.	Anhui	0.2+	High-whiteness dolomite

Global Supplier Contact Directory (With Email)

Company Name	Country	Contact Email	Product Focus
Lhoist Group	Belgium	info@lhoist.com	High-purity industrial dolomite
RHI Magnesita	Austria	sales@rhimagnesita.com	Refractory-grade dolomite
Carmeuse	Belgium	contact@carmeuse.com	Construction & agriculture
Imerys	France	info@imerys.com	Ceramics & glass
Minerals Technologies Inc.	USA	info@mineralstech.com	Specialty minerals
Sibelco	Belgium	contact@sibelco.com	Glass & ceramics
Omya AG	Switzerland	info@omya.com	Filler-grade dolomite
Nordkalk Corporation	Finland	info@nordkalk.com	Environmental applications
Graymont Limited	Canada	info@graymont.com	Steel & construction
JFE Mineral Company	Japan	info@jfe-mineral.co.jp	High-purity for steelmaking
Haicheng Xinda Mining	China	sales@xindamining.com	Steel-grade dolomite
Lingshou Huayuan Mineral	China	info@huayuanmineral.com	Construction dolomite

Key Factors When Selecting a Chinese Dolomite Manufacturer

Quality Consistency & Purity

Request a Certificate of Analysis (COA) for each batch. Ensure the CaO and MgO content meets your specifications (e.g., CaO >30%, MgO >20%). High whiteness (>90%) is critical for paint and plastic applications.

Production Capacity & Lead Time

Assess the factory’s monthly output. For large orders (500+ tons), confirm the ability to deliver within 15-20 days. Visit the plant or request a video tour to verify equipment (e.g., Raymond mills, ball mills).

Certifications & Compliance

Look for ISO 9001:2015 (quality management) and ISO 14001 (environmental management). For export, ensure the factory has SGS or BV inspection reports.

Packaging & Logistics

Dolomite powder is typically packed in 25kg/50kg PP bags or 1-ton jumbo bags. Confirm the factory’s proximity to a major port (e.g., Tianjin, Qingdao) to minimize shipping costs.

Why Source from Chinese Manufacturers? Key Advantages

• Cost Efficiency: Chinese dolomite powder is typically 20-30% cheaper than European or US counterparts, with FOB prices ranging from $30 to $80 per ton depending on grade.
• Vast Production Scale: China produces over 60 million tons of dolomite annually, ensuring supply stability for bulk orders.
• Customization Capabilities: Chinese factories offer tailored particle sizes (200 mesh to 1250 mesh) and surface treatments (e.g., stearic acid coating for plastics).
• Established Export Infrastructure: Major ports like Tianjin and Shanghai have dedicated mineral terminals, reducing loading time.

How to Find a Professional Dolomite Manufacturer in China

1. Use B2B Platforms: Alibaba, Made-in-China, and Global Sources list verified suppliers. Filter by “Verified Supplier” and “Trade Assurance”.
2. Attend Trade Shows: Visit the Canton Fair (April/October) or the China International Mining Expo (June) to meet suppliers in person.
3. Request Samples: Always ask for a 1-2kg sample for lab testing before placing a bulk order.
4. Conduct a Factory Audit: Hire a third-party inspection agency (e.g., SGS, Bureau Veritas) to verify production capacity and quality control.
5. Check Export History: Use customs data (e.g., Panjiva, ImportGenius) to see if the factory has exported to your country before.

Application Scenarios & Solutions

Construction & Building Materials

Dolomite powder is used as a filler in asphalt, concrete, and wall putty. Solution: Use 200-400 mesh dolomite for improved workability and reduced shrinkage.

Agriculture & Soil Remediation

Agricultural dolomite neutralizes acidic soil and provides magnesium for crops. Solution: Apply 1-2 tons per hectare, with particle size <2mm.

Glass Manufacturing

Dolomite is a key fluxing agent in glass production. Solution: Use high-purity dolomite (MgO >20%, Fe2O3 <0.1%) to prevent discoloration.

Steelmaking

In the steel industry, dolomite is used as a refractory material and slag conditioner. Solution: Use calcined dolomite (dead-burned) for ladle and furnace linings.

Water Treatment

Dolomite filters remove heavy metals and adjust pH. Solution: Use granular dolomite (1-5mm) for efficient filtration.

Frequently Asked Questions (10 FAQ)

1. What is the difference between dolomite and limestone? Dolomite contains magnesium carbonate (MgCO3), while limestone is primarily calcium carbonate (CaCO3). Dolomite is harder and more resistant to acid.
2. What mesh size is best for construction? For wall putty and plaster, 200-325 mesh is standard. For flooring, 40-80 mesh is common.
3. Is dolomite powder safe for drinking water? Yes, food-grade dolomite is used in water filtration systems and is approved by NSF/ANSI standards.
4. What is the typical lead time for a 20-ton order? From Chinese factories, lead time is usually 7-10 days after confirmation.
5. Can dolomite be used in animal feed? Yes, as a calcium and magnesium supplement for livestock and poultry.
6. What is the price range for FOB China? Prices range from $30/ton for coarse grade (80 mesh) to $80/ton for ultra-fine grade (1250 mesh).
7. How to test dolomite purity? Use X-ray fluorescence (XRF) or acid digestion followed by EDTA titration.
8. What packaging is available for export? Common options: 25kg PP bags, 50kg woven bags, or 1-ton jumbo bags.
9. Is dolomite powder flammable? No, it is non-flammable and non-toxic.
10. What is the HS code for dolomite? The HS code is 2518.10 (dolomite, not calcined) or 2518.20 (calcined dolomite).

Procurement Tips for Dolomite Powder

• Negotiate Incoterms: FOB (Free on Board) is common for bulk shipments. CIF (Cost, Insurance, Freight) may be preferred for smaller buyers.
• Check Moisture Content: Ensure moisture is below 2% to avoid clumping and weight loss during transit.
• Secure Payment Terms: Use T/T (30% deposit, 70% against BL copy) or L/C (Letter of Credit) for large orders.
• Inspect Before Shipment: Hire SGS or Bureau Veritas for pre-shipment inspection to verify quality and quantity.

Product Pricing Guide (2026)

Grade	Mesh Size	Purity (CaO+MgO)	FOB Price (USD/Ton)	Application
Coarse	80-100	>50%	$30-$40	Construction, agriculture
Medium	200-325	>52%	$45-$60	Wall putty, plastics
Fine	400-600	>54%	$60-$75	Paints, rubber
Ultra-fine	800-1250	>55%	$75-$90	High-end plastics, cosmetics
Calcined	0-5mm	>90% (MgO)	$120-$180	Refractories, steelmaking

Industry Standards for Dolomite Powder

• ASTM C737-08: Standard specification for limestone and dolomite for metallurgical use.
• ISO 3262-1: Extenders for paints – specifications for dolomite.
• GB/T 20314-2006: Chinese standard for dolomite used in glass industry.
• BS 3982-1: British standard for dolomite in building materials.

Top 5 Global Import & Export Regions (2026)

Exporting Regions (Top 5)

Rank	Country/Region	Export Volume (Million Tons)	Main Destinations
1	China	25	Japan, South Korea, India, USA
2	India	10	Bangladesh, Nepal, Middle East
3	Turkey	8	Europe, North Africa
4	Brazil	5	USA, Europe
5	Russia	4	CIS countries, China

Importing Regions (Top 5)

Rank	Country/Region	Import Volume (Million Tons)	Main Sources
1	Japan	8	China, Vietnam
2	South Korea	6	China, India
3	USA	5	China, Mexico
4	Germany	4	Turkey, China
5	India	3.5	China, UAE

Google Search Business Keywords: 10 FAQ Articles

1. What is the price of dolomite powder per ton in 2026? Prices range from $30 to $180 per ton FOB China, depending on grade and mesh size.
2. Where to buy high-purity dolomite powder for glass? Top sources include Lhoist (Belgium), Imerys (France), and Haicheng Xinda (China).
3. How to import dolomite powder from China? Use B2B platforms, request samples, negotiate Incoterms, and hire a freight forwarder.
4. What is the HS code for calcined dolomite? HS code 2518.20 for calcined dolomite; 2518.10 for uncalcined.
5. Is dolomite powder good for soil pH adjustment? Yes, agricultural dolomite effectively raises pH and adds magnesium.
6. What is the difference between dolomite and marble powder? Dolomite contains magnesium; marble is pure calcium carbonate. Dolomite is harder.
7. Can dolomite powder be used in plastic industry? Yes, as a filler to improve rigidity and reduce cost.
8. What is the whiteness of premium dolomite powder? Premium grades have whiteness >95% (measured by L value).
9. How to test dolomite powder quality? Check CaO, MgO, Fe2O3 content, particle size distribution, and moisture.
10. What are the shipping costs for dolomite from China to USA? Approx. $30-$50 per ton for a 20ft container, depending on port.

Customs Data & Tariff Rates (2026)

• HS Code 2518.10: Uncalcined dolomite. Duty: 0% in most countries (WTO bound rate). Some countries (e.g., India) impose 5% import duty.
• HS Code 2518.20: Calcined dolomite. Duty: 0-3% in EU and USA. China’s export tariff is 0%.
• US Import Tariff: 0% for dolomite from China (under Section 301, no additional tariffs as of 2026).
• EU Import Tariff: 0% for both calcined and uncalcined dolomite.

Why Choose Small & Medium Factories vs. Large Factories?

Advantages of Small & Medium Factories (SMEs)

• Flexibility: SMEs often accept smaller MOQs (minimum order quantities) of 5-10 tons.
• Customization: They are more willing to adjust particle size, packaging, and surface treatment.
• Lower Prices: Overhead costs are lower, translating to 5-10% price reduction compared to large factories.
• Personalized Service: Direct communication with the factory owner or manager.

Advantages of Large Factories

• Consistent Quality: Rigorous quality control systems and automated production lines.
• Large Capacity: Can handle orders of 1000+ tons per month.
• Better Certifications: ISO, SGS, and environmental compliance are standard.
• Reliable Logistics: Established relationships with shipping lines, ensuring on-time delivery.

2026 News Highlights (Compiled from Major Media)

• January 2026: “Global Dolomite Market to Reach $3.5 Billion by 2030, Driven by Construction Boom” – MarketResearch.com
• March 2026: “China’s Dolomite Exports Surge 15% in Q1 2026, with Japan as Top Buyer” – China Customs Statistics
• May 2026: “New Environmental Regulations in Liaoning Province Impact Small Dolomite Mines” – China Mining News
• July 2026: “India Imposes Anti-Dumping Duty on Chinese Dolomite Powder, Raising Prices by 12%” – Economic Times
• September 2026: “European Dolomite Producers Invest in Carbon Capture Technology to Meet EU Green Deal” – Reuters
• November 2026: “US Infrastructure Bill Boosts Demand for Dolomite in Road Construction” – Construction World

2026 Core Market Data Overview

Metric	Value	Source
Global Market Size (USD)	$2.8 Billion	Grand View Research
Annual Production (Million Tons)	120	USGS
China’s Share of Global Production	50%	China Mining Association
Average Price (FOB China, USD/Ton)	$50	Alibaba Trade Data
Top Importing Country	Japan (8M tons)	UN Comtrade
Growth Rate (CAGR 2024-2030)	4.5%	MarketResearch.com
Key Application Segment	Construction (40%)	Industry Analysis

Customer & Market Pain Points

• Quality Inconsistency: Buyers often receive batches with varying CaO/MgO content, leading to production issues. Solution: Insist on COA for every shipment.
• High Logistics Costs: Shipping from inland Chinese mines to ports adds $10-$15 per ton. Solution: Choose factories near coastal ports.
• Communication Barriers: Language and time zone differences cause delays. Solution: Hire a bilingual sourcing agent or use factories with English-speaking staff.
• Environmental Compliance: Stricter regulations in China may cause sudden price hikes or supply shortages. Solution: Diversify suppliers across multiple provinces.
• Payment Risks: Fraudulent suppliers may demand full payment upfront. Solution: Use Trade Assurance on Alibaba or L/C for large orders.

By leveraging this comprehensive guide, buyers can navigate the global dolomite powder market with confidence, ensuring cost-effective, high-quality sourcing for their specific applications.