Calcium Oxide

What is Calcium Oxide?

Calcium oxide, commonly known as quicklime, is a mineral of great importance in both nature and industry. Its hardness on the Mohs scale ranges from 3.5 to 4, slightly less than marble but greater than gypsum. Pure calcium oxide is white to light gray, while impurities such as iron and magnesium give it pale yellow, bluish-gray, or even dark brown hues. Its crystalline structure occurs mainly in granular or massive equiaxed aggregates with well-defined cleavage. It reacts violently with water, releasing heat and forming slaked lime, a property that makes it widely used in construction, metallurgy, environmental protection, and the chemical industry.

Calcium Oxide Grinding

In Latin America, most companies use Raymond mills, micron mills, and ball mills to grind calcium oxide powder and obtain the desired final product. Different grinding equipment produces calcium oxide powder with diverse industrial applications.

Raymond mills are suitable for producing common calcium oxide powder with a mesh size of 80 to 400, used primarily for general industrial applications such as desulfurization in steel mills, mortar for construction, soil amendment, and wastewater treatment.

Micron mills can process ultrafine calcium oxide powder of 1250 mesh or even finer, and are used in applications with strict requirements for fineness and specific surface area, such as plastic filler masterbatches, fine chemicals, high-end coatings, and highly active desulfurizers.

Ball mills produce uniform powder of medium fineness (200 to 325 mesh) in wet or dry processes, making them suitable for large mining operations and cement production lines. Their advantages lie in their high adaptability to raw materials and the concentrated distribution of finished products, but their energy consumption and noise levels are relatively high.

Raymond Mill for Calcium Oxide

For grinding calcium oxide, the Raymond mill offers significant value and advantages. Calcium oxide has moderate hardness and is highly hygroscopic; the Raymond mill’s drying airflow system effectively reduces silo clogging caused by moisture adsorption. Furthermore, its product fineness ranges from 80 to 400 mesh, making it ideal for the main markets for calcium oxide use: construction, environmental protection, and steel desulfurization, while avoiding unnecessary energy consumption from overgrinding. Whether for use in the Mexican construction market or for supplying steel desulfurization in Brazil, choosing our Raymond mill means maximizing the profitability of processing per ton of calcium oxide, while simultaneously guaranteeing product quality.