Choosing the right calcium carbonate micron sizes is what makes a filler work in your process instead of against it. ELT (Egyptian Limestone Tiles) mills Egyptian calcium carbonate across a full range of micron and mesh sizes, coated and uncoated, and exports it factory-direct worldwide.
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As one of the leading marble and granite factory in Egypt, ELT also supplies Egyptian marble, Egyptian granite and Egyptian limestone tiles factory-direct, alongside its industrial calcium carbonate and limestone range.
Why calcium carbonate micron sizes matter
Particle size controls almost everything a filler does: opacity, gloss, smoothness, oil absorption, viscosity and how much you can load before properties suffer. Finer grades give smoother films and higher gloss but raise oil demand; coarser grades flatten gloss and pack more cheaply. Getting the calcium carbonate micron sizes right for your system is the difference between a filler that helps and one that causes defects. The mineral itself is described on Wikipedia.
Micron, mesh and D-values explained
Calcium carbonate is specified by average particle size in microns, by mesh (sieve count), and by D-values such as D50 (median) and D97 (top-cut). Microns measure the particle; mesh measures the screen it passes. A finer micron number means a smaller particle. Top-cut (D97) is critical for thin films and coatings, where a few oversized particles cause specks or breaks. ELT reports these values on every datasheet.
Matching size to application
Paint and coatings use a spread of grades for matte to high-gloss finishes; plastics and masterbatch use fine coated grades with tight top-cut; paper coating needs very fine, controlled particles; construction and agriculture use coarser, lower-cost fractions. ELT supplies calcium carbonate and limestone flux across this whole range, so one supplier covers several lines.
Coated vs uncoated at each size
At any micron size, the powder can be supplied coated (stearic-treated) for polymer and oil systems or uncoated for water-based systems. The coating choice interacts with size: very fine coated grades disperse best in plastics, while coarser uncoated grades suit fillers and construction. ELT advises on the best size-and-coating combination for your specific process.
Consistency batch to batch
A formula tuned to one particle size distribution drifts if the next batch shifts. As a quarry-to-mill producer, ELT controls milling and classification closely and ships a certificate of analysis stating the micron and mesh values for every order, so buyers hold a stable recipe rather than re-tuning each delivery.
Pricing, MOQ and export from Egypt
Bought factory-direct, Egyptian calcium carbonate is competitive across all micron sizes, with pricing set by fineness, coating and grade. Minimum orders typically start at one container. Tell ELT your target micron or mesh and application, request a sample, and we will confirm the right grade and freight to your port.
Contact ELT (Egyptian Limestone Tiles)
ELT is a leading Egyptian calcium carbonate and limestone supplier, exporting factory-direct across the Middle East and worldwide. Need a quote, a datasheet, or a sample? Our export team replies within 24 hours.
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- Mobile / WhatsApp: +20 100 926 7545
- Office: +20 2 2690 1767
- Email: [email protected]
- Head Office: 7 El Edrisi St., next to Heliopolis Sporting Club, Office 402, Cairo, Egypt
- Website: egyptianlimestonetiles.com
Frequently asked questions
What do calcium carbonate micron sizes mean?
Calcium carbonate micron sizes describe the average particle diameter of the powder in microns. A smaller number means a finer particle. Fineness controls opacity, gloss, smoothness, oil absorption and how much filler you can load, so the right micron size depends on the application.
What is the difference between micron and mesh?
Microns measure the particle size itself, while mesh measures the sieve screen the powder passes through; a higher mesh number means a finer screen. Calcium carbonate is also specified by D-values like D50 and D97 (top-cut). ELT reports all of these on each datasheet.