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From ancient times to the present day №8 The active use of copper and bronze occurred as a result of its availability and fairly simple extraction from various compounds and alloys. Copper is obtained from sulfide ores. To obtain copper, it is necessary to process a very large amount of mineral raw materials. At metallurgical plants, the mined ore is enriched and roasted. The roasting process takes place in special furnaces, which is necessary to remove sulfur from them. More details: https://kazakh-tv.kz/ru/programms/vie... #copper #bronze Subscribe to Kazakh TV - https://bit.ly/2TOyJ4q Our website - https://kazakh-tv.kz/ Vkontakte - https://vk.com/kazakhtv Facebook - / kazakhtvkz Twitter - / kazakh_tv Instagram - / kazakhtv_kz Telegram - https://t.me/kazakhtvchannel