Other high grade ores used in the cement industry include:
1. Limestone: Besides calcium carbonate, limestone also contains magnesium carbonate and trace amounts of other minerals. It is a primary source of calcium oxide (lime) used in cement production.
2. Clay: Certain types of clay, such as kaolin or ball clay, contain high amounts of aluminum and silica, which are important components in the production of cement.
3. Shale: Shale is rich in silica, aluminum oxide, and other minerals. It is commonly used as a source of silica (silicon dioxide) in cement production.
4. Iron ore: Iron ore is sometimes used as a source of iron oxide in cement manufacturing. It provides the necessary iron oxide (Fe2O3) as a coloring agent and helps to improve the kiln process efficiency.
5. Silica sand: Silica sand, composed mainly of silicon dioxide, is used as a source of silicon in cement production. It helps to control the setting time of cement and improves its strength.
6. Gypsum: Gypsum is a mineral that contains calcium sulfate, and it is added to cement to regulate its setting time and enhance its workability.
Note: These are just a few examples of high grade ores used in the cement industry. The actual ores used can vary depending on location and specific manufacturing processes.
Calcium carbonate is the major source of cement industry in png. Name other high grade ores
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