Hebei Fengchao Import and Export Co., Ltd. is one of the most reliable manufacturers and suppliers of calcined petroleum coke carburizer 5-10mm 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 petroleum coke carburizer 5-10mm made in China, welcome to get pricelist from our factory.
This 5-10mm calcined petroleum coke carburizer features robust, shatter-resistant particles. It delivers a relatively moderate dissolution rate and enables continuous carbon replenishment in large melting furnaces, avoiding abrupt spikes in carbon content of molten steel. It generates less dust loss during mechanical or manual feeding and mitigates severe bubbling on the molten bath surface. Suitable for high-power electric arc furnace steelmaking and large steel ingot casting, it helps metallurgical enterprises stabilize the overall smelting rhythm.
This 5-10mm calcined petroleum coke carburizer undergoes an extended high-temperature calcination process to cut residual volatile matter and reduce surface reactivity of particles. Its larger particle size provides excellent settling performance once charged into the molten bath. Carbon dissolves gradually and progressively, preventing instantaneous carbon surges and reducing melt splashing during feeding. This coarse-grained carburizer is widely applied in large-capacity EAF steelmaking, heavy-section casting production and ferroalloy smelting. It facilitates operators' fine adjustment of carbon indicators, lowers safety hazards caused by on-site splashing, and fits continuous mass melting operations in the metallurgical industry.
Dense green coke is selected as the base raw material. After deep calcination, selective crushing and particle size classification screening are carried out to retain specifically the coarse fraction of 5-10mm. Fine by-products generated from screening are diverted for other carburizer grades instead of being directly recycled for re-crushing. The enterprise's metallurgical R&D team continuously optimizes and adjusts the calcination holding time for coarse granular materials. An independent finished-product temporary warehouse is built within the plant, physically separated from the calcination workshop. Products are delivered via dedicated freight lines to serve large metallurgical smelting bases. Apart from conventional system certifications, special tests for settling performance and thermal shock resistance are conducted. Batch retention files are kept for every lot. For export business, third-party on-site loading supervision can be arranged to further control delivery quality of bulk commodities.
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FAQ
Q: After the 5-10mm coarse-grained carburizer is charged into an electric arc furnace, will it sink too slowly and float on the molten bath surface?
A: Thanks to the high particle density achieved after deep calcination, most particles gradually sink into molten steel. Nevertheless, a small number of particles will suspend temporarily if the initial bath temperature in the furnace is low. It is recommended to control the feeding timing and add materials in batches after the molten bath is fully heated up to achieve ideal carbon replenishment efficiency.
Q: Are coarse particles prone to pipe jamming when passing through automatic top-charging pipelines?
A: 5-10mm falls into the large particle size range. Narrow, long discharge pipelines do carry a risk of blockage. It is preferentially recommended to appropriately widen the feeding chute opening, or adjust the feeding rhythm with intermittent discharging to reduce material accumulation and jamming inside the pipeline.
Q: Compared with the 3 5mm grade, does the use of 5-10mm carburizer require extended melting holding time?
A: Coarse particles naturally dissolve more slowly, so adequate reaction time for dissolution should be reserved in theory. However, its advantage lies in a much steadier carbon pickup curve. The feeding timing can be adjusted according to your actual smelting rhythm, and it is not necessary to prolong the entire smelting cycle.
Q: The coarse product tends to roll and scatter when stockpiled in the open air. What warehousing recommendations do you have?
A: The angular particles easily roll outward during stacking, so tall piles are not advisable. Low layered stacking is recommended. If stored outdoors, rain tarpaulins must be covered to avoid extra moisture introduced by rain infiltration, which would disturb smelting conditions.
Q: Is bulk shipment by sea for large quantities available, or is jumbo bag packaging the only option?
A: Both standard jumbo bag container shipment and bulk carrier shipment are available provided particle size specifications are met. We will strictly control the material moisture content before bulk loading. However, bulk shipment cannot isolate seawater moisture, so jumbo bags are the preferred solution for long-distance ocean transportation.
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