Hebei Fengchao Import and Export Co., Ltd. is one of the most reliable manufacturers and suppliers of calcined coke in China. With a professional production team, we are able to meet the needs of the majority of our customers. If you're going to wholesale bulk calcined coke made in China, welcome to get pricelist from our factory.
This calcined coke is processed by controlled high-temperature thermal treatment in a rotary kiln to remove inherent moisture and hydrocarbon volatile matter, yielding dense particle texture and stable true density. It maintains consistent particle mechanical strength during carbon batching and compression molding processes. It is mainly used as the core raw material for prebaked anodes in aluminum electrolysis and also applicable to carbon brick manufacturing. It helps carbon product manufacturers stabilize green body forming performance in large-scale production.
Calcined coke is obtained from green petroleum coke via high-temperature thermal treatment in rotary kilns. It features a typical turbostratic carbon crystal structure, high fixed carbon content, good wear resistance and low thermal expansion. Without undergoing graphitization, it delivers moderate electrical and thermal conductivity yet offers remarkable economic benefits for bulk consumption. This carbon raw material primarily serves as granular aggregate for prebaked anodes in aluminum electrolysis. High-quality fine fractions can be used as steelmaking carburizers, while graded granular products are also applied in metallurgical ramming paste and corrosion-resistant carbon refractory materials for smelting service conditions.
Our calcined coke adopts graded screened green petroleum coke as the main feedstock. Production is completed by energy-saving calcination units combining vertical kilns and rotary kilns. Differentiated processes including gradient heating crystallization and indirect slow cooling plus screening are applied to control internal carbon lattice indicators of the product. The enterprise has an R&D team specializing in carbon purification to continuously optimize calcination operating parameters. An independent laboratory and test area is built within the plant. Externally, we leverage the park's railway freight advantages to ensure turnover and delivery of domestic and overseas orders. Beyond basic system certifications, the company implements internal quality inspection standards stricter than national specifications, together with a batch retention traceability system. It meets customized supply demands for low-impurity calcined coke from customers in aluminum electrolysis, lithium-ion battery anodes and other sectors.
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FAQ
Q: Can the physicochemical indicators of calcined coke be adjusted according to downstream service conditions?
A: Targeted fine-tuning of indicators is available. Based on raw material characteristics, we can adjust true density and porosity to suit different sintering conditions for graphite electrodes and prebaked anodes. The lower limits for sulfur and metallic impurities will not be altered arbitrarily to avoid abnormal risks in subsequent smelting. Small samples can be provided in advance for customers' laboratory evaluation.
Q: How is product particle size controlled? Is oversize coarse material or excessive fine powder likely to occur?
A: Air classification combined with rotary screening is adopted instead of vibrating screening alone. Particle size tolerance ranges are set before shipment. If customers impose strict upper limits for particle size or restrictions on fine powder proportion, particle size specifications can be defined at the contract stage and stated in the quality inspection report.
Q: What documents can be provided for commodity inspection and documentation of export orders?
A: In addition to routine batch quality certificates, commercial documents and support for third-party inspection are available. REACH material data forms can be prepared in accordance with regulatory requirements of destination countries. Extra voluntary certificates are not issued by default. We can arrange inspection at designated institutions upon request.
Q: What is the minimum order quantity? Are mixed batch trial orders acceptable?
A: Deliveries are normally full-container loads. Small-batch trial orders can be accepted for new project development, though the lead time for trial orders will be longer than mass production schedules. Restricted by the continuous operation nature of calcination kilns, sporadic small-tonnage production cannot be scheduled on demand. Early communication for production planning is recommended.
Q: What changes may occur to calcined coke during storage, and how should it be warehoused after receipt?
A: Long-term open-air stockpiling of finished products tends to absorb moisture, indirectly raising moisture content. It is recommended to store the material in moisture-proof covered warehouses. Moisture indicators should be rechecked preferentially upon arrival. Do not directly feed the material into high-temperature processes to prevent furnace disturbance caused by vapor release.
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