CALCIUM METAL WEBSITE
Tradeasia International Pte. Ltd is a privately owned, independent company headquartered in Singapore. Tradeasia International was first established in 2004 with the sole intention of carrying out chemical distribution services especially to commodity industries in many parts of the world.
CALCIUM METAL
Calcium is a chemical element with the symbol Ca and atomic number 20. As an alkaline earth metal, calcium is a reactive metal that forms a dark oxide-nitride layer when exposed to air. Its physical and chemical properties are most similar to its heavier homologues strontium and barium. It is the fifth most abundant element in Earth’s crust, and the third most abundant metal, after iron and aluminium. The most common calcium compound on Earth is calcium carbonate, found in limestone and the fossilised remnants of early sea life; gypsum, anhydrite, fluorite, and apatite are also sources of calcium. The name derives from Latin calx “lime”, which was obtained from heating limestone
PRODUCTION CALCIUM METAL
The production process of calcium metal by the metallothermic reduction process is shown The raw material CaCO3 is calcined to produce CaO. Low magnesia content (MgO) is preferred for the reduction feed materials because magnesia is preferentially reduced in this process, thus lowering the reaction efficiency for calcium metal. A magnesium content of less than 0.5% is desirable. The calcined material and reductant are mixed and pelletized at a mole ratio of CaO:Al = 3:2. As with ferrosilicon reduction of magnesium, the pellets are charged into the retort and reduced at 1200 °C under 10− 3 mmHg. Calcium metal vapor condenses on a low-temperature zone in the retort.
APPLICATION TO USE CALCIUM METAL
Calcium Metal for Production Stuff
Calcium Metal is available as disc, granules, ingot, pellets, pieces, powder, rod, wire, and sputtering target. Ultra high purity and high purity forms also include metal powder, submicron powder and nanoscale, quantum dots, targets for thin film deposition, pellets for evaporation and single crystal or polycrystalline forms.
Calcium metal is used as a reducing agent in preparing other metals such as thorium and uranium. It is also used as an alloying agent for aluminium, beryllium, copper, lead and magnesium alloys.