Coke is an important industrial product, used mainly in iron ore smelting, but also as a fuel in stoves and forges. The unqualified term "coke" usually refers to the product derived from low-ash and low-sulphur bituminous coal by a process called coking.

As shown in Table 4, SiO 2 is the main chemical constituent of the ash in the coke, which increases the silicon content of the hot metal, and then increases the viscosity of the molten iron,...

Dec 8, 2018 · The inorganic matter in coke is called coke ash (mineral matter) and is typically around 12 % on dry basis. Both the organic and inorganic components influence coke reactivity. Thus, coke characterization is an important aspect to understand the quality of coke formed.

Jul 1, 1993 · Specific heats of a range of coals, cokes and ashes have been measured from 300 to 600 K (coals, cokes) or 1000 K (ashes) using differential scanning calorimetry. There is a rapid increase of specific heat with the content of volatile matter in the region 0–10 wt% followed by only mild increases at higher concentrations.

Jun 12, 2017 · Ash fusion behavior is closely associated with ash-related problems including fouling, sintering, and slagging, which results in a negative effect on the utilization of petroleum coke (petcoke). Petcoke ash contains high levels of …

Ash in coke has a critical effect on iron quality, slag composition and desulphurisation. The index used to demonstrate the change in coke consistency during incineration in the blast furnace is that of pyrolytic change: this closely reflects changes in coal charge composition.

Moisture, volatile matter, and ash are all important solid fuel characterization measurements for coke materials. The moisture, volatile matter, and ash results are typically among the primary parameters used for assessing the quality of a solid fuel material.

Jun 25, 2014 · For quantitative assessment of the coal’s mineral component, which has an important influence on the coke quality—specifically, on CSR and CRI—the potential reactivity of coke (CRP) is recommended as a better characterization of the index B b.

Ash content in coke influences coke consumption rate by blast furnaces. In the Karaganda steelworks a 1% ash content decrease in coke reduces coke consumption by a blast furnace by 1 to 1.6%. Ash content in coke depends on ash content in a coal mixture and ash content in a coal mixture depends on ash content and washability of coal components.

It is known that much of the silicon found in the hot metal originates from the ash of the coke which is rich in silica.