Ultrafine Dolomite Powder

Our Ultrafine dolomite powder is a refined mineral product developed for high-end industrial filler fields. Produced from high-whiteness and high-purity premium dolomite ore through wet grinding + multi-stage air classification processes, its median particle size can be controlled within 10μm with narrow particle size distribution and extremely few large particles. It features large specific surface area, good dispersibility and moderate oil absorption value. Different from ordinary fine ground products, Ultrafine dolomite powder can be better integrated into polymer systems to improve surface smoothness, dimensional stability and mechanical properties of finished products. Meanwhile, its natural composite calcium-magnesium components can endow products with certain flame retardant and smoke suppression effects, making it an ideal functional filler for high-end coatings, plastics and rubber products. Our Ultrafine dolomite powder can provide different fineness specifications from 1000 mesh to 2500 mesh to accurately match performance demands of various downstream industries.

 

As a source factory with more than ten years of process experience in producing ultrafine mineral powder, we drastically cut production energy consumption while guaranteeing ultrafine particle size through optimization of grinding media and classification parameters, enabling customers to obtain high-quality ultrafine fillers at more competitive costs. Each batch of finished products undergoes laser particle size analyzer testing before delivery to stabilize particle size indicators such as D50 and D97. Meanwhile, coloring impurities such as iron and manganese are strictly controlled to secure stable product whiteness and avoid color difference of powder affecting appearance of downstream finished products. At present, our ultrafine dolomite products supply multiple high-end coating and modified plastic enterprises, replacing partial high-price fillers and helping customers realize cost reduction and efficiency improvement.

Targeting the high-end application attribute of Ultrafine dolomite powder, we provide in-depth customized services. In terms of particle size, specific D50 and D97 indicators can be customized according to customers' dispersion equipment and finished product performance requirements to adjust particle size distribution curves. In terms of surface treatment, surface modification treatments such as stearic acid and silane coupling agent are available to improve compatibility and dispersibility of powder in organic systems and further enhance mechanical properties of finished products. In terms of packaging and transportation, special packaging schemes such as moisture-proof vacuum packaging and anti-static packaging can be provided to avoid moisture absorption and agglomeration of ultrafine powder during transportation. Our technical team can cooperate with customers in formula debugging to jointly optimize application effect of powder in customers' systems.

The production flow of our ultrafine dolomite series products strictly complies with ISO9001 Quality Management System Standards. Products have passed multiple third-party authoritative tests including heavy metal content testing, particle size testing and environmental indicator testing, with corresponding test reports and qualification documents available. For overseas markets, our products comply with EU REACH Regulation, RoHS Directive and other relevant environmental protection requirements to smoothly enter high-end markets such as Europe and America. The factory also holds self-operated import and export rights and can provide complete export customs declaration documents to simplify procurement procedures for overseas purchasers.

Considering the characteristics of high fineness, easy dust generation and easy moisture absorption of Ultrafine dolomite powder, exclusive packaging and transportation schemes are adopted. The conventional package is 20kg laminated paper-plastic composite bags lined with double-layer PE moisture-proof film with sealed treatment at sealing openings. Bulk purchases can adopt moisture-proof bulk bags with inner lining and built-in discharge outlets for dust-free feeding convenience. During transportation, full coverage with moisture-proof tarpaulins is adopted, and mixing with damp and polluting goods is prohibited to ensure products remain dry and free of agglomeration upon arrival at customers' hands. For feeding difficulties of ultrafine powder, we can also provide supporting pneumatic conveying scheme suggestions to optimize customers' feeding experience.

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