Kaolin (Al₂O₃·2SiO₂·2H₂O) contains about 39% alumina by weight. This makes it a viable raw material for producing high-purity alumina (HPA), which is alumina with purity above 99.99% and is used in LED sapphire substrates, lithium battery separator coatings, and semiconductor components. Several process routes can convert kaolin into HPA. Each route involves different equipment for […]
How to Prepare High-Purity Alumina from Kaolin Read More »
Calcium carbonate is the workhorse filler in two of the biggest products in building materials: wall putty powder and dry-mix mortar. In both, it is the ingredient that decides cost, surface finish, and how easily the mix spreads and sticks. The difference between a good batch and a complaint is rarely the mineral itself. It
Calcium carbonate is the most widely used mineral filler in PVC wire and cable compounds. It appears in both insulation and sheathing, where it cuts material cost, improves dimensional stability, and adds flame retardancy. The main choice for a compounder is simple: use uncoated calcium carbonate, or pay a little more for a coated, surface-treated
Coated vs Uncoated Calcium Carbonate: Which Is Better in Cable? Read More »
A biodegradable film can fail from a single coarse calcium carbonate particle. That is why two powders with the same D50 can perform completely differently in a PLA or PBAT film line. Calcium carbonate is the filler most degradable packaging makers reach for first, and for a simple reason: it cuts cost without breaking the
Introduction Calcium carbonate (CaCO?) is the most widely used mineral filler in the rubber industry. Few materials match its combination of low cost, brightness, chemical inertness, and ease of handling. Formulators use it in tires, shoe soles, conveyor belts, hoses, and gaskets to control cost, adjust hardness, and hold tight dimensional tolerances. Calcium carbonate is
Limestone is a carbonate rock composed primarily of calcite (CaCO₃). It serves as a fundamental raw material for cement and construction aggregates, as well as a core raw material for new calcium-based materials such as calcium oxide (quicklime), calcium hydroxide (slaked lime), lightweight calcium carbonate (PCC), and nano-calcium carbonate. However, the grade of limestone varies
What kind of limestone is suitable for producing calcium carbonate? Read More »
Calcium carbonate (CaCO3) is the most widely used industrial mineral filler in the world. It can be consumed in paper, plastics, paints, adhesives and construction materials at hundreds of millions of tonnes per year. Despite this ubiquity, calcium carbonate encompasses a wide range of distinct materials with very different properties and price points. Ground calcium
Mixing is a pre-forming step in ceramic production that is easy to underestimate. The mixing step comes after raw material grinding and before forming (pressing, extrusion, or tape casting). Its output is a homogeneous blend of ceramic powder, sintering aids, dopants, and binders. This directly determines the consistency and performance of everything downstream. Non-uniform mixing
Many GCC producers struggle with the same problem: their existing equipment can no longer meet customer demands for finer particle sizes, yet upgrading to a full system seems costly and complex. If this sounds familiar, understanding the difference between CTC and MBS classifiers is your first step toward a solution. Ground calcium carbonate is one
Most GCC producers focus their attention on the mill — the ball mill motor rating, the grinding media, the liner material. The classifier gets less attention. However it is the classifier that actually defines the particle size distribution of the product. The mill produces a broad range of particle sizes. The classifier is what decides
