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Use of coke

release time:2019/10/22
Use of coke

  Coke is mainly used in blast furnace ironmaking and blast furnace smelting for non-ferrous metals such as copper, lead, zinc, titanium, antimony and mercury. It acts as a reducing agent, a heating agent and a column skeleton. The ironmaking blast furnace uses coke instead of charcoal, which lays the foundation for the large-scale modern blast furnace and is a major milestone in the history of metallurgy. In order to achieve better technical and economic indicators for blast furnace operation, smelting coke (metallurgical coke) must have appropriate chemical and physical properties, including thermal properties during smelting. In addition to being used in large quantities for ironmaking and non-ferrous metal smelting (metallurgical coke), coke is also used in foundry, chemical, calcium carbide and ferroalloys with varying quality requirements. For example, coking for casting generally requires large particle size, low porosity, high fixed carbon and low sulfur content; coking with chemical gasification requires less stringent strength, but requires good reactivity, high ash melting point; coke requirement for calcium carbide production Try to increase the fixed carbon content. The following are detailed uses for different focal sizes.
  Mechanism coke: {metallurgical; trial for steel mills}
  Drum drum size 8cm-150cm: {Ironized iron; used for casting of motor casing, radiator, mechanical counterweight}
  Fat coal char: {Ironized iron; used for casting of motor casing, radiator, mechanical counterweight}
  Large modified coke: {for ordinary casting; rough parts such as mechanical parts are suitable for 2-3.5 tons furnace type}
  Shaped coke grain size 25cm: {for ordinary casting and slightly strict casting products; such as pump pipe fittings fire fasteners, etc.}
  Fixed carbon 85 or more; volatile matter 1.5.; ash 13.5; sulfur 0.5 or less:
  There are gongs and drums with a particle size of 8cm or more: {used for general casting}
  Shaped focal size 25cm; {for precision casting and ductile casting}
  Improved coke: (main coking coal) {for precision casting and ductile casting}
  Fixing carbon 86 or more; sulfur 0.5 or less; ash 12 or less; volatile matter 1.5 or less:
  捣 drum focus size 4cm-8cm or more: {for ordinary casting}
  Shaped coke grain size 25cm: {for precision casting and ductile casting for furnaces of more than 3 tons}
  Fixed charcoal 88 or more; sulfur 0.5 or less; ash 10 or less; volatile fraction 1.5 or less casting coke:
  Shaped Coke Size 25cm: {Applicable to all international high-precision ductile casting and export international indicators}
  捣 drum focus more than 8cm: {for ordinary casting and strict casting products; such as pump pipe fittings fire fasteners, etc.}
  Fixed carbon 788385 above high sulfur coke: {for copper, aluminum, chemical, chemical coke}
  Fixed carbon 83 gas coal char: {for carbon monoxide extraction gas, rich in gas}
  Fixed charcoal 78 pulverized coal coke: {casting parts annealing, civil coke, chemical coke, copper, aluminum, plastic}
  Fixed charcoal 65 or so coal slime coke: {civil coke, cast component annealing, chemical coke}

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