GPC (a carbon-rich byproduct) is a byproduct of the refining of petroleum. It's an important ingredient in the production processes for steel and aluminium. When produced using a high-quality manufacturing process, GPC is an effective carburizer and carbon additive in electric arc furnaces that helps maximize steel quality and performance while cutting operational costs. GPC's graphitic composition makes it a good heat conductor and improves the thermal and electric efficiency of steel products.
GPC is used as a carbon-controlling carburizer for an electric arc smelter to improve the strength and hardness of molten iron, reduce impurities, and achieve the desired steel grade. This is achieved by adding the GPC to the steel in precise amounts. The result is superior material properties, and consistent industrial performance.
GPC is also used to produce aluminum anodes that are essential in the metal melting process. The presence GPC allows for optimal chemical reaction and improves alumina production, while also increasing purity. GPC is used in foundries as a graphitizing compound to improve metal dimensional accuracy and achieve better casting results.
GPC is an alternative fuel to coal that has a low sulfur content and low ash. It is therefore a more efficient fuel for metal melting and electric arc furnaces. This reduces the amount coke that is needed in the blast-furnace, lowering emissions and the overall energy consumption. GPC's fixed carbon content is high, which allows it react quickly to higher temperatures. This improves the quality finished steel products.
The GPC process begins with crude oil which is then distilled to remove the lighter fractions, which can be used as gasoline and diesel. The remaining heavy fractions will be sent to a delayed coaler unit, where the temperature is set for thermal cracking. The heavier hydrocarbons are broken down, converting them to solid carbon structures and volatile gasses that are then burned off to produce coke. Once the coke has been formed, it's heated in a rotary oven to calcine it. This removes most volatile matter and leaves behind a carbon-rich, carbon-rich product called green petroleum coal (GPC).
The GPC is quickly cooled to prevent any further undesirable reactions. This cooling method, known as quenching is crucial to preserving GPC's low sulfur content and high fixed carbon content. GPC particles are also screened in order to achieve a uniform particle diameter, which is important for industrial applications.
Although the steel sector has reduced its energy consumption by half over last decade, there are still opportunities to improve in terms of emissions reduction and productivity. This is why companies are investing heavily in innovative technologies that will radically transform the production process. For example, replacing fossil fuels with renewable gas sources like coke and producing GPC out of biomass. The use of these new technologies will allow the steel industry to meet First Movers' near zero emissions targets by retiring old capacity, deploying energy-efficient measures, and integrating renewables.
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