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With the development of new energy industry, the demand for lithium salt is increasing. Spodumene is the main lithium source, and lithium extraction process from spodumene is the key technology in lithium salt production industry. The chemical property of natural spodumene is stable, and the chem...
Kolkata – Travel guide at Wikivoyage
The Victoria Memorial. Kolkata (Bengali: কলকাতা Kalkātā, Hindi: कोलकाता Kolkātā), formerly Calcutta, is the capital and largest city of West Bengal and the cultural capital of India.Kolkata is an "in your face" city that shocks and charms the unsuspecting visitor. Long known as the cultural capital of India and home to the Bengali Renaissance, the "City of …