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Dolomite Powder

White dolomite powder, 200–2000 mesh, CaO 27–35%, MgO 22–30%, whiteness 80–95. Produced in our own plant in Haicheng, China. Custom specification, free samples, third-party inspection available.

HS code: 251810 6 specifications 200 – 2000 mesh

Overview

Dolomite Powder — TDHX Minerals, China

Dolomite is the only common mineral that delivers both CaO and MgO in a single feedstock, which is why glassmakers specify it rather than blending limestone with magnesia. In coatings and plastics it acts as a bright, hard functional filler; in construction and environmental applications it is used for mortar, concrete and flue gas desulphurisation. Our dolomite standard TDHX-Dolomite-2025-08 specifies CaO 27–35%, MgO 22–30%, SiO₂ ≤8%, Fe₂O₃ ≤0.5% and whiteness 80–95%, across 200 to 2000 mesh.

At a glance

  • Mesh size200 – 2000 mesh
  • Packaging25/50 kg bags, jumbo bags, OEM print
  • MOQ1 × 20 ft container (~25 t)
  • Lead time7 – 15 days after spec confirmed
  • TDSDownload → Dolomite Technical Data Sheet (PDF)

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Related industries

Coatings & Paint

Our mineral powders enhance coating opacity, brightness, and weather resistance. They serve as extender pigments that improve film properties and…

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Glass & Ceramics

Dolomite powder provides essential MgO and CaO for glass batch formulations, while talc serves as a flux agent in ceramic body and glaze compositions.

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Construction

Dolomite and calcium carbonate powders are widely used in construction materials including cement, adhesives, sealants, and roofing materials.

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Frequently Asked Questions

What are the CaO and MgO contents of your dolomite powder?

Our dolomite standard TDHX-Dolomite-2025-08 specifies CaO 27–35%, MgO 22–30%, SiO₂ ≤8%, Fe₂O₃ ≤0.5% and whiteness 80–95. Individual grades sit inside that window; the TDS is available for download on this page. Tell us your target chemistry and we will confirm which grade matches.

Which industries use dolomite powder?

Glass and ceramics (CaO–MgO source), coatings and plastics (functional filler), construction (mortar and concrete), and environmental protection (flue gas desulphurisation).

Why is dolomite powder used in glass melting?

Dolomite supplies both CaO and MgO in one raw material, which lowers the melting temperature, aids refining, and improves the thermal and chemical durability of the finished glass.

Can dolomite powder be customised for my process?

Yes — mesh size from 200 to 2000 mesh, whiteness 80–95, and CaO/MgO ratios can all be adjusted. Free samples are available for bench testing.

Need a custom specification?

Tell us your target mesh size, whiteness and application. We send samples and a quotation within 24 hours.

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