Ground calcium carbonate products

Five product lines of natural calcium carbonate, from raw lump to ultrafine powder.

The basics

What is calcium carbonate?

Calcium carbonate, with the formula CaCO₃, is the main mineral in limestone and marble. It is white, soft and chemically stable. Those qualities make it a standard filler, extender and soil conditioner.

What Khattco supplies

Ground calcium carbonate (GCC)

GCC is made by crushing and milling natural limestone or marble. The particles are irregular in shape, and the purity and whiteness depend on the stone it comes from. It is the most widely used form of CaCO₃ in industry, and every product in our range is GCC.

For comparison

Precipitated calcium carbonate (PCC)

PCC is made by a chemical process instead of by grinding stone. It is finer and more uniform in particle size and shape, and it generally costs more. It is explained here so you can tell the two apart. Khattco’s range is GCC.

Product range

Choose the form that suits your process.

Lumps and chips are crushed and sized. The powders are milled and graded by fineness, either uncoated or coated with stearic acid.

Compare

Products side by side.

Sizes are typical. The exact grade and size range for your order are confirmed in the quotation.

Comparison of Khattco calcium carbonate products
Product	Form	Typical size range	Main uses
Calcium Carbonate Lumps	Lump	50 to 300 mm	Grinding by the buyer, glass, steel and lime production
Calcium Carbonate Chips and Granules	Sized chips and granules	1 to 10 mm	Terrazzo, artificial stone, feed grit, construction, landscaping
Uncoated Calcium Carbonate Powder	Ground powder	200 to 2500 mesh, about 75 to 5 microns	Paint, paper, putty, adhesives, ceramics, rubber
Coated Calcium Carbonate Powder	Surface treated powder	Mesh sizes confirmed in the quotation	PVC pipes and profiles, cables, masterbatch, plastics film, rubber
Ultrafine and Micronised Grades	Ultrafine powder	About 5 microns and finer	Premium coatings, inks, sealants, engineering plastics

Calcium Carbonate Lumps
Form
Lump
Typical size range
50 to 300 mm
Main uses
Grinding by the buyer, glass, steel and lime production
Calcium Carbonate Chips and Granules
Form
Sized chips and granules
Typical size range
1 to 10 mm
Main uses
Terrazzo, artificial stone, feed grit, construction, landscaping
Uncoated Calcium Carbonate Powder
Form
Ground powder
Typical size range
200 to 2500 mesh, about 75 to 5 microns
Main uses
Paint, paper, putty, adhesives, ceramics, rubber
Coated Calcium Carbonate Powder
Form
Surface treated powder
Typical size range
Mesh sizes confirmed in the quotation
Main uses
PVC pipes and profiles, cables, masterbatch, plastics film, rubber
Ultrafine and Micronised Grades
Form
Ultrafine powder
Typical size range
About 5 microns and finer
Main uses
Premium coatings, inks, sealants, engineering plastics

Reference

Mesh to micron guide.

Powder grades are named by mesh. A higher mesh number means a finer powder. The sizes below are approximate sieve openings.

The exact particle size distribution, including D50 and D97, is stated on the technical data sheet that comes with every quotation.

Approximate particle size in microns for each mesh grade
Mesh	Approx. size	Relative size
200 mesh	About 75 microns
325 mesh	About 45 microns
400 mesh	About 38 microns
600 mesh	About 23 microns
800 mesh	About 18 microns
1250 mesh	About 10 microns
2500 mesh	About 5 microns

Not sure which grade you need?

Tell us what you are making and where it will be used. We will suggest a grade and arrange a sample.

Talk to us

Tell us what you need and we will send a quotation.

Send the product, grade, quantity and destination port. A technical data sheet and certificate of analysis are provided with every quotation.

Request a Quote Services@khattco.com.au