? ? ? 增碳劑是煉鋼鑄造時用的一種添加劑，是生產優質鋼材必不可少的原料，另外也是生產電極糊的原料。增碳劑原料有很多種，生產工藝也各異，有木質碳類，煤質碳類，焦炭類，石墨類等，其中各種分類下又有很多小種類。優質增碳劑一般指經過石墨化的增碳劑，在高溫條件下，碳原子的排列呈石墨的微觀形態，所以稱之為石墨化。石墨化可以降低增碳劑中雜質的含量，提高增碳劑的碳含量，降低硫含量；適用于鑄鋼以及灰鐵鑄造增碳，具有高碳、低硫、低含水量且成本低及性價比高的特點。
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? ? ? 1、顆粒大小適中，孔隙度大，吸收速度快，吸收率高,根據使用方法吸收率 高能達到90以上。
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? ? ? 2、化學成分純凈，高碳、低硫、有害成分極微，吸收率高。硫份低，0.05以下， 低0.02，氮份低，100ppm以下。
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? ? ? 3、產品石墨晶體結構好，提高原鐵液的形核能力。在孕育中增加球墨鑄鐵的墨球數量，在電爐鐵液中增加石墨晶核。細化、均勻化石墨在鑄件中的分布。
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? ? ? 4、高固定碳，吸收率高，低硫低氮，并在吸收速度上快于**石墨化增碳劑，且不吸附爐壁，**吸收無殘留，**于**硫**0.05以下的石墨化增碳劑，性價比 高。性能**、穩定。選用合適的增碳劑有助于降低冶煉生產成本，提高冶煉金屬及鑄件的質量。
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? ? ? 1、爐內投入法：增碳劑適于在感應爐中熔煉使用，但依據工藝要求具體使用也不盡相同。
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? ? ? ?a、在中頻電爐熔煉中使用增碳劑，可按配比或碳當量要求隨料加入電爐中下部位，回收率可達95以上；
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? ? ? ?b、如果碳量不足調整碳分時，先打凈爐中熔渣，再加增碳劑，通過鐵液升溫，電磁攪拌或人工攪拌使碳溶解吸收，回收率可在90左右，如果采用低溫增碳工藝，即爐料只熔化一部分，熔化的鐵液溫度較低的情況下，全部增碳劑一次性加入鐵液中，同時用固體爐料將其壓入鐵液中不讓其露出鐵液表面。這種方法鐵液增碳可達1.0以上。
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? ? ? 2、爐外增碳。
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? ? ? ?a、包內噴石墨粉；選用石墨粉做增碳劑，吹入量為40kg/t，預期能使鐵液含碳量從2增到3。隨著鐵液碳含量逐漸升高，碳量利用率下降，增碳前鐵液溫度1600，增碳后平均為1299。噴石墨粉增碳，一般采用氮氣做載體，但在工業生產條件下，用壓縮空氣更方便，而且壓縮空氣中的氧燃燒產生CO,化學反應熱可補償部分溫降，而且CO的還原氣氛利于**增碳效果。
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? ? ? ?b、出鐵時使用增碳劑；可將100300目的石墨粉增碳劑放到包內，或從出鐵槽隨流沖入，出完鐵液后充分攪拌，盡可能使碳溶解吸收，碳的回收率在50左右。
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鞏義市匯鉅活性炭有限公司
王小信
手 機：
Q Q: 277****331
郵 箱：277****331@qq.com
網 址：
廠 址：鞏義市西村鎮車元村
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Introduction of recarburizer
Recarburizer is a kind of additives used in steelmaking, casting, is an essential part of raw materials, production of high quality steel electrode paste are in addition to production of raw materials. Recarburizer there are many kinds of raw materials, production process is different, have wood carbon, coal carbon, coke, graphite, etc, among them under various classification and there are a lot of small type. High quality recarburizer generally refers to after graphitization of carburant, under the condition of high temperature, carbon atoms arranged in the microstructure of graphite, so called the graphitization. Graphitization can lower the content of impurities in the carburant, improve the carbon content of carburant, reduce sulfur content; Apply to cast iron and carbon, grey iron casting high carbon, low sulfur, low water content and the characteristics of low cost and high cost performance.
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Recarburizer features
1, moderate particle size, porosity, absorption speed, high absorptivity, according to the method of use highest absorption rate can reach more than 90.
2, chemical composition and pure, high carbon, low sulfur, harmful composition is minimal, high absorption rate. Low sulfur, below 0.05, the lowest 0.02. N a low, 100 parts per million.
3, good product of graphite crystal structure, improving the original nuclear capability in the shape of liquid iron. Increase in breeding of nodular cast iron ball ink quantity, increase in the electric furnace iron graphite crystal nucleus. Refinement of fossils, uniform ink distribution in the castings.
4, 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. Excellent performance, stable. Choose appropriate recarburizer helps reduce smelting production cost, improve the quality of metal smelting and casting.
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Recarburizer usage
Input method: 1, furnace, carburant suitable for used in induction furnace smelting, but according to the technological requirements specific use are also different.
A, using recarburizer in medium frequency electric furnace smelting, can according to the proportion or carbon equivalent with the material to join furnace the middle and lower parts, recovery rate can reach more than 95;
B, if insufficient carbon carbon, hit the net first furnace slag, plus carburant, by raising the temperature of molten iron, or artificial electromagnetic stirring to dissolve carbon absorption, the recovery rate is around 90, if the low-temperature carbonization process, the melt furnace charge only part of the molten iron liquid under the condition of low temperature, all recarburizer one-time in liquid iron, at the same time with solid charge to press it into the liquid iron dont let it show liquid iron surface. This method can reach more than 1.0 of iron liquid carbon.
2, outside the furnace carbon.
A, graphite powder injection in ladle; Choose recarburizer graphite powder do, blow into the amount of 40 kg/t, expected can make the liquid iron carbon content increases from 2 to 3. With the carbon content in liquid iron is increased, the utilization rate of carbon, increase carbon before liquid iron temperature of 1600 , an average of 1299 after carburization. Carbon graphite powder spraying, generally by nitrogen as the carrier, but under the condition of industrial production, it is more convenient to use compressed air, oxygen and compressed air combustion produces CO, the chemical reaction heat can compensate part of the temperature drop, and the effect of reducing atmosphere conducive to improve carburization CO.
B, the iron using recarburizer; Purpose can be 100-300 graphite powder carburant in package, or from the iron tank with flow into and out of the liquid iron after fully mixing, as far as possible to dissolve carbon absorption, carbon recovery rate is around 50.
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鞏義市匯鉅活性炭有限公司
王小信
手?機：
Q Q: 277****331
郵?箱：277****331@qq.com
網?址：
廠?址：鞏義市西村鎮車元村
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