Hebei Fengchao Import and Export Co., Ltd. is one of the most reliable manufacturers and suppliers of calcined anthracite coal carburizer 0-1mm 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 anthracite coal carburizer 0-1mm made in China, welcome to get pricelist from our factory.
This 0-1mm calcined anthracite carburizer is produced from premium high-rank anthracite via high-temperature calcination. It features stable fixed carbon content and low volatile matter. Fine particles disperse rapidly in molten steel, shortening carbon adjustment time during ladle refining and reducing the formation of large slag inclusions. As a cost-effective carbon additive, it is suitable for precise carbon adjustment in small and medium-sized steel foundries, enabling users to control carbon indicators steadily while cutting overall smelting costs.
This 0-1mm calcined anthracite carburizer is manufactured by subjecting high-quality hard anthracite to high-temperature calcination to remove inherent moisture and volatile components. Its fine particle size allows quick dispersion and dissolution in molten steel. Compared with petroleum coke-based carburizers, it has moderately higher sulfur and ash content yet delivers outstanding cost advantages. This fine-grained carburizer is widely applied for precise carbon trimming in small and medium foundries, nodular cast iron and alloy casting production. It facilitates rapid fine-tuning of carbon content during ladle treatment and helps foundries optimize overall raw material expenditure for regular casting batches.
Dense lumpy premium anthracite is selected as the raw material. After high-temperature calcination in a rotary kiln, the material undergoes crushing and closed-circuit screening. The 0-1mm particle size range is strictly controlled; oversize coarse material is returned for regrinding, while fine powder by-products are separately collected and supplied as foundry auxiliary materials. The company's technical personnel focus on controlling rotary kiln calcination temperature and holding time to stabilize fixed carbon values. An independent anthracite processing zone is established in the plant, operating separately from petroleum coke production lines, with enclosed warehouses for moisture-proof storage to supply various foundries. In addition to basic system certifications, special tests for ash and sulfur content are conducted. Samples are retained and filed for each batch. Third-party sampling and laboratory analysis are available for foreign trade orders to rigorously control impurity levels and ensure stable specifications for bulk supply.
Factory Tour
FAQ
Q: The 0-1mm material is very fine and causes severe dusting during feeding. What practical solutions are available?
A: Fine materials are inherently prone to dust generation. Avoid pouring from high elevations. Preferred feeding methods include spreading it at the bottom of furnace charge, pre-mixing with a small amount of steel scrap before furnace charging, or adopting simple injection feeding, which can significantly reduce on-site dust emission.
Q: Will fine calcined anthracite oxidize and burn prematurely under high temperature at the furnace mouth, lowering carbon yield?
A: Fine particles are indeed susceptible to combustion loss when exposed to the high-temperature oxygen-rich zone at the furnace mouth. The material should be added beneath the molten metal surface to minimize contact time with furnace air, reduce oxidative burnout and guarantee actual carbon yield.
Q: Is close attention required to the sulfur index when using this carburizer for nodular cast iron production?
A: Calcined anthracite naturally contains higher sulfur than petroleum coke carburizers. Nodular iron production is sensitive to sulfur. The upper sulfur limit must be clearly agreed upon when placing orders. A desulfurization process shall be matched during production to prevent poor nodularity caused by excessive sulfur.
Q: Can this 0-1mm calcined anthracite carburizer be pre-mixed dry with other furnace charges in advance?
A: Dry pre-mixing is permissible. However, due to the large specific gravity difference from other metallic furnace materials, particle segregation and material stratification tend to occur after bumping during transportation. Pre-mixed materials should be charged into the furnace as soon as possible and not stored or transported for extended periods.
Q: After prolonged ocean shipping, fine material inside jumbo bags becomes compacted and clumpy. Will direct charging into the furnace affect carbon adjustment performance?
A: Compaction and caking easily occur under pressure during long-distance sea transport. Hard lumps have poor internal air permeability. If large clumps are thrown directly into the molten bath, the dissolution rate will slow markedly. It is recommended to break up and sieve the material briefly after unloading before feeding it into the smelting process to ensure stable carbon adjustment results.
Hot Tags: calcined anthracite coal carburizer 0-1mm, China calcined anthracite coal carburizer 0-1mm manufacturers, suppliers, factory
