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calcium carbonate :)
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calcium carbonate (limestone)
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Limestone is made up of calcium oxide which is the key ingredient to make cement. The limestone is mixed in with a particular clay to get the cement mixture.
Basically there are four essential elements used to make cement. They are Calcium, Silicon, Aluminum and Iron.
The raw materials needed to make cement are,Calcium oxidesilicon dioxideAluminium oxideIron oxideMagnesium oxideAlkaliessulphurtrioxide.
Calcium carbonate (CaCO3) contains calcium, Ca, and carbon, C, and oxygen, O.
The raw materials needed to make ordinary portland cement are,Calcium oxidesilicon dioxideAluminium oxideIron oxideMagnesium oxideAlkaliessulphurtrioxide.
== == to gain limestone and other useful rocks to get useful materials/ make useful materials out of the produc you collect, for example you can get steel, cement , glass and concrete
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