English
عربى
русский
EspañolProfessional Inorganic Iron Oxide Pigments
Demei focuses on the research, development, and production of inorganic iron oxide pigments. Our pigments cover iron oxide red, yellow, black, brown, green, orange, blue, etc.
View Products Contact Us
Product Details
Comprehensive information about our iron oxide pigments including specifications, applications, advantages, and more
Color Pigments Powder for Cement Products
High-performance inorganic pigment with excellent color stability, weather resistance, and broad application range.
Precision Manufacturing for Cement Coloring
Deqing Demi Pigment Technology Co., Ltd. specializes in the production of iron oxide powders that are optimized for the cement industry. Our production process emphasizes the removal of impurities that can cause color drift during the curing phase. We work closely with cement product manufacturers to provide pigments that withstand the alkaline environment of the wet mix and the high-pressure conditions of dry-casting processes, ensuring the aesthetic longevity of the finished goods.
Cement-Based Application Areas
- Concrete Tiles: Coloring for roof tiles and interlocking floor tiles.
- Terrazzo Flooring: Pigmentation for polished cement and aggregate surfaces.
- Fiber Cement Boards: Integral color for exterior cladding and interior partition boards.
- Grout and Joint Fillers: Fine pigments for consistent color in tile installations.
Cement Product Specification Table
| Property | Range | Test Method |
| Oil Absorption (g/100g) | 15 - 25 | ISO 787-5 |
| Density (g/cm3) | 4.1 - 5.0 | ISO 787-10 |
| Tinting Strength (%) | 95 - 105 | ISO 787-24 |
| Soluble Salts (%) | Max 0.5 | DIN 55913 |
| Particle Shape | Spherical / Acicular | Microscopy |
Performance Characteristics for Cement
- Alkali Stability: The pigment does not react with the calcium hydroxide produced during cement hydration.
- Lightfastness: Maintains color intensity even when exposed to high-intensity solar radiation.
- Low Water Demand: Optimized particle distribution prevents the need for additional water in the mix.
- Batch Consistency: Tight control over tinting strength ensures the same shade in every production cycle.
Q: Does the pigment cause efflorescence?
A: While efflorescence is a natural cement process related to moisture, our pigments are low in soluble salts, meaning they do not contribute to or accelerate the formation of salt deposits on the surface.
Q: What is the maximum recommended dosage?
A: Generally, the dosage should not exceed 10% of the cement weight. Beyond this, the pigment may start to act as a non-binding fine, potentially reducing the bond strength of the cement paste.
Quality-Driven Production
Our facility utilizes a closed-loop milling system that ensures consistent particle fineness. This is critical for cement products where surface texture and color uniformity are vital for consumer acceptance.
Testing Services: We provide a complimentary lab service where we mix our pigments with a customer's specific cement and aggregate samples to provide a cured "color coupon" for approval before large-scale orders are placed.
Pigment-Cement Interaction Science
The color development in cement is a function of light reflection from the pigment particles embedded in the silicate matrix. We utilize spectrophotometry to analyze the reflectance curve of the cured cement surface. By understanding the refractive index of the cement binder, we calibrate our pigment particle sizes to maximize light absorption in specific wavelengths (Red, Yellow, or Black), ensuring the most efficient use of the colorant while maintaining a Delta E value within 0.8 units.
About Demei
Demei Chemical Co., Ltd. specializes in the research, development, and production of inorganic iron oxide pigments. With over a decade of experience in the field, we have established ourselves as a leading manufacturer with advanced production facilities and a dedicated R&D team.
We are China Custom Color Pigments Powder for Cement Products Manufacturers and Wholesale Color Pigments Powder for Cement Products Suppliers, Factory. Our comprehensive pigment range includes iron oxide red, yellow, black, brown, green, orange, and blue. We produce high-performance and high-stability composite iron oxide pigments with three specialized series: Standard, Micronized, and Low Heavy Metal Content levels.
Our products are exported to more than 30 countries and regions worldwide, serving diverse industries including construction, coatings, plastics, rubber, ceramics, and paper. We pride ourselves on consistent quality, excellent color properties, and reliable technical support for our global clients.
R&D Excellence
Continuous investment in research and development ensures technological leadership. Our R&D center focuses on innovative pigment formulations and application technologies.
Advanced Manufacturing
State-of-the-art production facilities with automated control systems ensure consistent quality and large-scale production capacity of over 50,000 tons annually.
Quality Assurance
Strict quality control at every production stage. Certified to ISO 9001:2015, our pigments meet international standards for color consistency and performance.
Global Reach
Extensive distribution network across Asia, Europe, Americas, and Africa. We provide customized solutions and technical support for diverse market requirements.
Core Products
We provide a full range of high-quality inorganic iron oxide pigments, widely used in building materials, coatings, plastics, rubber, ceramics and other industries.
Product Series
We offer three specialized series of iron oxide pigments to meet diverse industry requirements and application scenarios
Standard Series
Conventional particle size iron oxide pigments suitable for most industrial applications. Excellent dispersibility and tinting strength with high cost-performance ratio.
Micronized Series
Ultra-fine particle size with uniform distribution. Ideal for high-end coatings, plastics, and applications requiring superior fineness and smooth finish.
Low Heavy Metal Series
Strictly controlled heavy metal content meeting international environmental standards. Suitable for toys, food packaging, and safety-sensitive applications.
Social Responsibility
Demei not only contributes to production and operation, but also faithfully fulfills its social responsibilities, protects the ecological environment, strengthens safe production, and cares for the health of employees.
Environmental Protection
Implementing green production processes, reducing waste emissions, and actively promoting circular economy principles.
Safe Production
Comprehensive safety management system ensuring controlled and secure operations throughout the production process.
Employee Health
Providing healthy working environments, regular health check-ups, and focusing on physical and mental well-being of our employees.
Community Contribution
Active participation in community development, supporting educational initiatives, and giving back to society.
-
Phone
86-572-8035379
86-13666526593 -
Hours
Monday-Friday: 9am to 6pm
Saturday, Sunday: Closed -
Address
20th Floor, Mibei Chuanggongchang No. 650 Yunxiu South Road, Deqing County, Huzhou City, Zhejiang Province, China(Sales Office)
