Awọn anfani ti Fly Ash ni Nkan Ṣetan-illa Nkan

Nipasẹ: | Ti a fi sinu: fly Ash | Ọjọ Ẹtì, Oṣu kejila 3, 2020 - 6:52emi
Fly Ash in concrete

Fly ash is the most mineral residue left over from burning coal by coal-fired power plants. Fly ash jẹ pozzolanic, meaning that it has cementitious properties. It is valuable for


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Awọn ifaramo Vale $3 Bilionu Lati Ṣiṣẹ Iron Iron irin

Nipasẹ: | Ti a fi sinu: erupe | Ọjọ Ẹtì, Oṣu kejila 31, 2020 - 6:50emi
Dry iron ore processing

Ile-iṣẹ Vale do Reio Doce (CVRD) jẹ ọkan ninu awọn ile-iṣẹ iwakusa ti o tobi julọ ni agbaye. Oludari ni Ilu Brazil, Wọn ti ṣiṣẹ iwakusa ninu 30 awọn orilẹ-ede ni ayika agbaye. Wọn


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