Hebei Fengchao Import and Export Co., Ltd. is one of the most reliable manufacturers and suppliers of carbon raisers 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 carbon raisers made in China, welcome to get pricelist from our factory.
This carburizer features a stable crystalline carbon structure with strictly controlled volatile matter content. It delivers a steady carbon dissolution rate and helps restrain excessive slag formation in the molten bath. Suitable for smelting in medium-frequency furnaces as well as melting in electric arc furnaces, it mitigates abrupt fluctuations in the properties of molten metal and guarantees consistent casting quality during prolonged continuous mass production.
Manufactured from premium carbon raw materials, this carburizer has moderate porosity and excellent thermal stability under high-temperature smelting conditions. It releases little volatile matter during melting and will not cause violent turbulence of the molten bath. Its carbon dissolving performance is barely affected by fluctuations in smelting rhythm. Apart from the casting of gray cast iron and nodular cast iron, it is widely used for fine adjustment of carbon content in steelmaking processes. As a dependable carbon-adjusting additive, it helps metallurgical workshops cut ferrosilicon consumption and optimize overall production costs.
This carburizer is produced from qualified green petroleum coke. Using dedicated production lines, it undergoes incoming material inspection, rotary kiln calcination, controlled natural cooling, coarse crushing, roller screening classification, impurity separation and automatic packaging. Our technical team adjusts the heating curve inside the rotary calcination kiln to stabilize volatile removal and improve the mechanical strength of particles. Random sampling tests on chemical composition and particle hardness are conducted for every batch in the plant. Custom particle size grading schemes are developed for overseas steelmaking and casting projects. The company holds ISO9001 and ISO14001 environmental management system certifications. Each outgoing shipment is tested for fixed carbon, sulfur, ash and volatile matter indicators, supplying reliable carbon additives for integrated steel mills and independent foundries.
Factory Tour
FAQ
Q: What adverse consequences will insufficient particle hardness of the carburizer bring?
A: Particles with low hardness are prone to being crushed by extrusion during transportation and feeding, generating substantial fine dust. The dust burns rapidly on the surface of molten metal, leading to unstable carbon recovery.
Q: Why is rotary kiln calcination an indispensable process for producing this carburizer?
A: High-temperature calcination in the rotary kiln removes most volatile substances inside green petroleum coke. Inadequate calcination will cause massive gas release during smelting and trigger splashing of molten metal.
Q: Can this carburizer be directly used for smelting ultra-low sulfur steel?
A: It shall be judged according to the sulfur index of the product. Standard grades are not applicable. Special low-sulfur grades must be selected to meet the production requirements for ultra-low sulfur steel.
Q: What hidden risks will excessive stacking pressure cause when storing bulk carburizer in warehouses?
A: Excessive stacking pressure squeezes particles and creates extra fine powder. A higher proportion of fine powder during subsequent workshop transfer and feeding increases the risk of dust combustion loss.
Q: For carburizer application in EAF steelmaking, what operational practices can stabilize carbon absorption rate?
A: Charge the carburizer after the molten bath is initially formed. Do not sprinkle it directly onto piles of cold scrap steel; otherwise, oxidation loss will be severe.
Q: What hazards exist for ocean container transportation if the carburizer retains excessive combustible volatile matter?
A: Residual volatile substances may accumulate inside the sealed container. Slow oxidation and heat release can occur during long-distance sea freight, bringing risks of local overheating.
Hot Tags: carbon raisers, China carbon raisers manufacturers, suppliers, factory
