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ID number:283594
 
Author:
Evaluation:
Published: 17.04.2007.
Language: Latvian
Level: Secondary school
Literature: n/a
References: Not used
Extract

Čuguna ražošana
Čugunu no dzelzsrūdas iegūst speciālās krāsnīs-domnās. Tās automātiski piekrauj ar koksu, pēc tam kārtām ar aglomerātu un koksu. Aglomerāts ir dzelzsrūda, kas sakausēta ar kušņiem(parasti ar kaļķakmeni CaCO3 vai dolomītu CaCO3 X MgCO3).

Ķīmiskās reakcijas, kas norisinās domnā. Krāsns apakšējā daļā caur speciālām atverēm (dūkām) iepūš sakarsētu gaisu, kas bagātināts ar skābekli. …

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