coke - solid fuel is artificial, which is used mainly in the domain industry for smelting iron.It is also used in chemical, foundry industry and in nonferrous metallurgy.This combustible material may be oil, pitch, electrode or coal, depending on the raw materials from which it is produced.Most coke is produced from coal.
Cox - is a product that is obtained by warming the raw material to temperatures close to a thousand degrees without air.As a result of chemical and physical processes of the output is a product that contains more than 96 percent carbon.Also may be present in the coke ash, sulfur, phosphorus and other substances, the amount of which, however, should not be high sinceit can affect, for example, on the quality of steel produced by this fuel.This composition allows the coke to provide about 7,000 calories by burning one kilogram of matter.
Cox - a raw material which is used, inter alia, in the manufacture of electrodes.To this material was prepared by treatment of coal tar pitch (electrode coke) or the distillation products of crude oil (petroleum coke).The last embodiment differs from coal in that they have very low content of other components (ash content from 0.3 to 0.8%).
Coke includes several key steps, including:
- the selection of varieties of coal (gas can be used, greasy coking coals in varying proportions);
- mixing and grinding to produce the charge;
- screening, enrichment, seal, dosing, drying;
- accommodation in an oven followed by leveling rod coke pusher;
- immediate coking process (about fourteen and a half hours), resulting in the sintered carbons, and are removed most of the unnecessary substances (ammonia, tar, hydrogen, hydrocarbons and benzene class al.);
- pushing out the finished product in the quenching car;
- cooling water coke quenching tower by spilling abundant;
- the final product of the sorting classes from 0-10 to more than 60 millimeters.
Cox picture which is presented above is a gray substance if it is produced from raw coal.In the case of use on initial stages of oil or pitch tones final product from the coking process may be slightly different.
Cox - is a strategic product that should always be delivered to the smelter.This is due to technological processes in blast furnaces that operate without stopping.If a blast furnace is stopped for more than ten hours, the metal solidifies inside, and it can not be removed without destroying the structure of the furnace.For this reason, the production of coking coal supplies are dependent on, sincefurnace designed for non-stop operation for a quarter of a century (20-25 years).Stopping coke production leads to the formation of solidified slag in the furnace chamber, it is extremely difficult to remove therefrom.
