A, graphite recarburizer refers to after graphitization of carburant, under the condition of high temperature, carbon atoms arranged in the microstructure of graphite, so called the graphitization.Graphite carburant are widely used in steel smelting, can increase the dosage of scrap steel, reduce the dosage of pig iron or no iron, effectively avoid genetic influence on casting pig iron;Carburization effect is stable, good absorption effect, temperature effect is obvious, not return slag;Chemical composition of pure: high carbon, low sulfur, nitrogen, less harmful impurities. Second, oil purification JiaoZeng carbon agent with petroleum coke calcining and appearance assumes the circular or prismatic, with metallic luster, is porous, is carbon body.Petroleum coke is characterized of high carbon low sulfur, low ash, is metallurgy chemical industry, machinery, electric power and other industries ideal carbon materials and intermediates, petroleum JiaoZeng carbon agent is currently widely used recarburizer. Third, coal quality recarburizer do raw material is made of high quality anthracite, is at 1300 ℃ high temperature carbonization to reduce volatilization, to improve the fixed carbon content and density, strength, oxidation resistance of products.It has a fixed carbon content is higher, the oxidation resistance is strong, low content of harmful elements.In the process of smelting for reducing agent.Recarburizer to complement the carbon content in liquid steel and increase carbon material.In the process of the electric arc furnace steelmaking, when charging with addition of coke or anthracite as recarburizer.Due to its high ash content and volatile matter content, induction furnace melting cast iron is used as recarburizer rarely. Four, low sulphur recarburizer artificial graphite as raw materials, under the condition of high temperature, the microstructure of carbon atoms arranged in a graphite.Low sulfur, nitrogen, hydrogen is the key to prevent castings from nitrogen air hole, so it requires recarburizer sulfur content is lower, the better, the effect is best is low sulfur carburant, due to its high fixed carbon content, stable performance, easy to absorb, increase carbon effect is good wait for a characteristic, so also is so far the versatile wide a recarburizer.Used for metallurgical steelmaking carbon and carbon ductile iron casting, used as lubricating materials, wear-resisting casting moulding pressure membrane and high-temperature smelting, atomic energy industry and defense industry, can prevent boiler scale, as a pencil lead, pigment, polishes, electrodes, etc.
1, high fixed carbon, high absorption rate, low sulfur, low nitrogen and the absorption rate faster than the same kind of graphitization carburant, adsorption furnace wall, and not fully absorbed no residue, price is lower than the similar sulfur is lower than 0.05 following the graphitization of carburant, highest performance-to-price ratio. 2, high absorption rate, according to the method of use highest absorption rate can reach more than 90%. 3, absorption speed, than the same kind of graphitization recarburizer fast absorption, adsorption of furnace wall, and no residual, furnace carbon absorption speed advantage is more obvious. 4, low sulfur, below 0.05%, the lowest 0.02%.N a low, 100 parts per million. 5, high cost performance, review the above in the same kind of graphitization recarburizer (0.05) or less sulfur price is most advantage.
Used for casting, cast iron, cast steel and casting there will be a requirement for carbon, carburant just as its name implies is to increase the carbon content in liquid iron, and, for example, commonly used in smelting furnace charge for pig iron, scrap steel, back to the furnace charge, iron carbon content is high, but relatively scrap purchase price is higher section, so adding scrap supply, reduce the quantity of pig iron, increase carbon agent, can reduce the casting cost play a role.