coke

Coke is mainly used in blast furnace ironmaking and for copper, lead, zinc, titanium, antimony, mercury and other non-ferrous metal blast furnace smelting, reducing agent, heating agent and material column skeleton role. The use of coke instead of charcoal in ironmaking blast furnace has laid a foundation for the large-scale of modern blast furnace, which is a significant milestone in the history of metallurgy. In order to make the blast furnace operation to achieve better technical and economic indicators, smelting coke (metallurgical coke) must have appropriate chemical and physical properties, including the thermal properties of the smelting process. Coke in addition to a large number of ironmaking and non-ferrous metal smelting (metallurgical coke), but also used for casting, chemical industry, calcium carbide and ferroalloy, its quality requirements are different. Such as casting coke, general requirements of large particle size, low porosity, high fixed carbon and low sulfur content; Chemical gasification coke, the strength requirements are not strict, but the requirements of good reactivity, ash melting point is high; The fixed carbon content of coke used in calcium carbide production should be increased as far as possible. The following are detailed uses for different focal sizes

Mechanism coke: {metallurgical; Trial in steel mill}

Tapping coke particle size 8cm-150cm: {molten iron; Used for motor housing, radiator, mechanical counterweight casting;

Fertilizer coal char: {molten iron; Used for motor housing, radiator, mechanical counterweight casting;

Bulk improved coke: {for ordinary casting; Mechanical parts and other rough parts are suitable for 2-3.5 tons of furnace type.

Fixed coke size 25cm: {for ordinary casting and slightly strict casting products; Such as water pump pipe fittings, fire fasteners, etc.

Fixed carbon above 85; Volatile matter 1.5. Ash 13.5; Sulfur below 0.5:

There is tamping coke particle size above 8cm: {for general casting}

Fixed coke size 25cm; {for precision and spheroidal casting}

Improved coke: (main coking coal refining) {for precision casting and spheroidal casting applicable}

Fixed carbon above 86; Sulfur below 0.5; Ash content below 12; Volatile content below 1.5:

Tapping coke size 4cm--8cm or more than 10cm: {for ordinary casting}

Fixed coke size 25cm: {for precision casting and spheroidal casting is suitable for more than 3 tons of furnace mold}

Fixed carbon above 88; Sulfur below 0.5; Ash content below 10; Casting cokes with volatile content below 1.5:

Fixed coke size 25cm:{suitable for all advanced precision nodular casting and export international indicators}

> 8cm: {for ordinary casting and strict casting products; Such as water pump pipe fittings, fire fasteners, etc.

Fixed carbon more than 788385 high sulfur coke :{for copper, aluminum, plastic, chemical coke}

Fixed carbon above 83 gas coal coke: {for the extraction of carbon monoxide gas, rich in gas}

Fixed carbon 78 or so pulverized coal coke: {casting parts annealing, civil coke, chemical coke, copper, aluminum, plastic}

Fixed carbon about 65 coal slime coke: {civil coke, casting parts annealing, chemical coke}