Post‑calcined coke carbon‑addition agents are widely used in steelmaking, ironmaking, metallurgy, casting, and the automotive brake‑pad industry. They offer stable performance, low impurity levels, and tightly controlled particle size, enabling rapid carbon addition and improved production efficiency. Particle size and packaging can be customized to meet customer specifications.

As the “heart” of the aluminum electrolysis cell, the prebaked anode serves both as a current‑carrying electrode and as a participant in the electrochemical reactions of aluminum production, making it one of the most critical components of the aluminum electrolysis process. Calcined petroleum coke is one of the primary raw materials used to manufacture prebaked anodes, and its quality directly influences the anode’s physicochemical properties and the stability of the production process.

Resistance-grade and insulation-grade materials refer to calcined petroleum coke of varying particle sizes, named according to their intended use in the electrode or negative‑pole graphitization process. Typically, resistance-grade material is selected with a particle size of 8–25 mm, while insulation-grade material is chosen with a particle size of 0–2 mm.

Carbon powder refers to petroleum coke with a particle size of 0–1 mm after sieving.

Graphitized petroleum coke is produced by subjecting calcined petroleum coke to high‑temperature graphitization at 2,500–3,000 °C, resulting in a material with high carbon content and low levels of sulfur and nitrogen. Typically, sulfur content is below 0.05% and nitrogen content is below 300 ppm. It is widely used in the steelmaking and foundry industries, offering rapid dissolution and high absorption rates.

Graphite powder and graphite scrap are screening fines derived from graphitized petroleum coke, as well as cutting and crushing residues from graphite electrodes. Due to the high-quality raw materials used in their production and multiple stages of pressing and calcination, these products exhibit high carbon content, low sulfur levels, and a high specific gravity, making them widely employed in the steelmaking and foundry industries.

Bituminous coal, when heated to 950–1050°C in the absence of air, undergoes stages such as drying, pyrolysis, melting, coking, solidification, and shrinkage, ultimately producing coke. This process is known as high‑temperature coking (high‑temperature dry distillation). Since over 90% of metallurgical coke is used in blast furnaces for ironmaking, blast furnace coke is often referred to simply as metallurgical coke. According to particle size, it is classified into 60–80 mm, 40–60 mm, 25–40 mm, 10–25 mm, and <10 mm.

Foundry coke is a specialized type of coke used in cupola furnaces for melting iron. It serves as the primary fuel, melting the charge and superheating the molten iron while supporting the burden column to maintain optimal permeability. Consequently, foundry coke must exhibit large lump size, low reactivity, low porosity, adequate resistance to impact and crushing, and low ash and sulfur contents.

Semi‑coke, also known as “blue coke,” is a black or grayish‑black solid produced by medium‑temperature dry distillation—typically at temperatures around 600–800°C—of low‑rank coals, including lignite, long‑flame coal, non‑caking coal, and weakly caking coal. Semi‑coke generally exhibits high fixed carbon content, high electrical resistivity, high chemical reactivity, low ash, low aluminum, low sulfur, and low phosphorus levels; its specific performance characteristics are influenced by the composition of the feedstock coal. It is primarily used in industries such as chemicals, metallurgy, and gasification to produce calcium carbide, ferroalloys, ferrosilicon, silicon carbide, silicomanganese alloys, fertilizers, and other products, and it also serves as a clean fuel for domestic applications. In the steel industry, semi‑coke is mainly employed for blast furnace injection and as a sintering fuel. When used for blast furnace injection, its primary function is to replace bituminous and anthracite coals traditionally used in this process. Based on current practical performance, semi‑coke can partially or fully substitute coal in blast furnace injection without requiring major adjustments to existing operational procedures. In addition to blast furnace injection, semi‑coke can also partially replace coke breeze, thereby conserving coke and reducing smelting costs. For blast furnace injection, it primarily replaces the coke fines or anthracite currently used in sintering.

Silicon carbide is a non-metallic mineral product synthesized from quartz sand and petroleum coke at high temperatures exceeding 1,800°C. It serves as an essential raw material widely used in metallurgical deoxidation, the production of refractory materials, and industries such as electronics, machinery, and mold manufacturing. Silicon carbide is a powerful molten iron deoxidizer that purifies the iron melt, enhances its properties, and reduces costs. It exhibits a uniform and stable carbon-to-silicon ratio, with extremely low levels of harmful impurities like aluminum and phosphorus, as well as inert gases. In the early stages, it effectively controls the corrosion of the furnace lining caused by FeO (ferric oxide), preventing the formation of ferro‑silicate (FeO·SiO2) and thereby extending the service life of the furnace walls. It provides long-lasting inoculation effects: a silica film coats the surface of silicon carbide crystals, prolonging the time during which the core remains active, reducing the tendency for cementite and white cast iron to form, while also optimizing graphite morphology and stabilizing machinability. For ductile iron, pre‑deoxidized molten iron experiences reduced erosion and oxidation of magnesium, allowing for a roughly 10% reduction in the amount of spheroidizing agent required and mitigating the tendency toward white cast iron. For gray cast iron, adding silicon carbide helps prevent carbide precipitation, delays graphitization decay, and increases the number of graphite nuclei. Based on petroleum coke, it features a narrowly distributed particle size that can be tailored to specific needs, making it easy to use.

Ferrosilicon is an iron alloy composed of iron and silicon. It is produced by smelting iron and silicon ores—using coke, steel scrap, and quartz (or silica) as raw materials—in an electric arc furnace. Because silicon readily combines with oxygen to form silicon dioxide, ferrosilicon is commonly used as a deoxidizer in steelmaking; moreover, the substantial heat released during the formation of SiO₂ helps raise the temperature of the molten steel. In addition, ferrosilicon serves as an alloying element, widely employed in low‑alloy structural steels, spring steels, bearing steels, heat‑resistant steels, and electrical silicon steels. In both ferroalloy production and the chemical industry, ferrosilicon is frequently utilized as a reducing agent.

Silicomanganese alloy is an alloy composed of manganese, silicon, iron, and small amounts of carbon and other elements. It is a widely used ferroalloy with substantial production volumes, serving as an indispensable composite deoxidizer and alloying agent in the steel industry. Manganese–silicon alloys containing less than 1.9% carbon also function as semi‑finished products in the production of medium- and low‑carbon ferromanganese and metallurgical manganese via the electric‑silicothermic process.

Ferro-manganese is an iron alloy composed of manganese and iron. In steelmaking, it serves as a deoxidizer and alloying additive and is the most widely used ferroalloy. Ferro-manganese also finds extensive applications in the metallurgical industry, primarily for producing ferro‑manganese alloys, manganese‑copper alloys, and manganese sand for steelmaking. It is broadly classified into high‑carbon ferro‑manganese (with a carbon content of 7%), medium‑carbon ferro‑manganese (containing 1.0–1.5% carbon), and low‑carbon ferro‑manganese (with a carbon content of 0.5%).