Coke foundry domain, fraction 0-10, 10-25, 40+, 60 +

Coke coal is applied to cast iron smelting (domain coke) as high - quality smokeless a toplivosstanovitel of iron ore, a baking powder of burdening materials. Coke coal is used also as vagranochny fuel in foundry production (foundry coke), for the household purposes (household coke), in chemical and ferroalloy industries (special types of coke). Domain coke has to have the sizes of pieces not less than 25 - 40 mm at the limited maintenance of pieces less than 25 mm (no more than 3% ) and more than 80 mm. Foundry coke by the sizes of pieces is larger than domain; the product at which there are pieces less than 60 - 80 mm is most suitable. The main difference of foundry coke from domain — the small maintenance of S which should not exceed 1% (in domain coke to 2% ). The industry of ferroalloys uses small coke (for example, fraction of 10 - 25 mm), at the same time unlike domain and foundry productions prefer to apply a product with big reactionary ability. Requirements for durability to household coke less rigid, than to domain and foundry. In all productions the best raw materials — the strongest low - ash and low - sulphurous coke containing a small amount of small fractions. World production of coke coal about 400 million tons per year.