The experimental studies on iron carbide formation by two step method have been carried out. 在实验室条件下进行了二步法制备碳化铁的研究。
The abrasion-resistant capability can be improved and better than Ni-white cast iron by choosing suitable composition and structure. the iron carbide constituent of steel and cast iron; very hard and brittle. 适当选择铬系白口铸铁的成分和组织可使其抗磨损性能显著提高,并优于镍硬铸铁。铁的碳化物,组成钢和铸铁,极硬极脆。
The iron carbide constituent of steel and cast iron; very hard and brittle. 铁的碳化物,组成钢和铸铁,极硬极脆。
Iron carbide has heightened people ′ s interest as a new raw material for its manifold advantages. 碳化铁因其各方面的优点已引起人们的浓厚兴趣。
The iron carbide is determined by the difference of total iron and the sum of metallic iron, ferrous and ferric iron. 碳化铁中的铁量由全铁量与金属铁、亚铁和高铁量之差值求得。
The reaction process to make iron carbide using H 2-CH 4 as reductant 用H2-CH4气制备碳化铁的反应过程
Synopsis Effects of the reaction temperature and gas composition on reduction of iron ore and formation of iron carbide in H 2-CH 4 mixture has been investigated. 研究了反应温度、气相成分对铁矿石用H2-CH4气制备碳化铁反应过程的影响。
Iron carbide-a new iron product for direct reduction 碳化铁&新型的直接还原铁产品
The Preparation of Iron Carbide and its Synthetic Diamond Experiment under High Pressure and High Temperature 铁碳化合物的制备及高温高压合成金刚石
With the development of EM and shortage of quality scrap further attention is paid to iron carbide as a potential of new raw material for steelmaking. 随着电炉炼钢的发展和优质废钢的短缺,碳化铁作为炼钢新原料的潜能越来越受到重视。
The formation mechanism of carbon-coated iron carbide nanocrystals was discussed. 讨论了碳包碳化铁纳米晶的形成机理。
The preparation of iron carbide by gas reduction 气体还原生产碳化铁
This paper studied the effects of different kind of gas on the reduction degree, metallic ratio and iron carbide ratio in the process of iron carbide production by gas out of coal. 主要研究了以煤制气为还原剂制备碳化铁过程中气体种类对还原度、金属化率、碳化铁率的影响。
Preparation of Carbon-coated Iron Carbide Nanocrystals by Using AC Carbon Arc Discharge Method 交流碳弧法合成碳包碳化铁纳米晶
Fundamental Study on Iron Carbide Formation by Two-Step Method 二步法制备碳化铁的基础研究
Based on thermodynamic analysis, the production mechanism and path of iron carbide deoxidized from iron ore in fluid bed were studied. The results show that ( 1) ferric oxides are deoxidized according to the theory of Gradual Deoxidizing at 700? 在热力学计算的基础上,探讨了铁矿石在流化床内还原生产Fe3C的生成机理和途径·结果表明,700℃时铁氧化物还原符合逐级还原理论,碳化铁由生成的铁经CO渗碳得到;
The influence of temperature on iron carbide made with the gas from coal 温度对煤造气制备碳化铁的影响
The catalyst was easier to be reduced at a higher space velocity. The higher partial pressure of CO_2 in slurry reactor during reduction could partially oxidize the iron carbide. And the content of Fe 3+ ( spm) was higher in the reduced catalyst. 在较低空速下还原时,还原形成的高的CO2分压对铁物相有一定的氧化作用,使得还原态催化剂中的Fe3+(spm)含量增大。
The experiment has shown that heat treatment can change the pattern and distribution of manganese& boron alloyed white cast iron carbide and the effect has close relationship with the treatment technique heat parameter and the pattern of the cast carbide. 试验结果表明:热处理可改变锰硼白口铸铁碳化物的形态与分布,其效果与热处理工艺参数及碳化物形态等密切有关。
Thermodynamical calculation and Analysis on production of iron carbide by COREX tail gas 利用COREX尾气生产碳化铁的热力学计算与分析
Iron Carbide ratio is the minimum at 600 ℃; 碳化铁率在600℃时最小;
In preparation of iron carbide using H2-CH4 mixed gas carbon deposition exercises great effect on the conversion of iron carbide. 用H2-CH4气制备碳化铁时,碳沉积对碳化铁的转化有很大的影响。
The subsequent carburization in syngas ( 2H2/ CO) resulted in the substitution of nitrogen by carbon atoms forming Fe2 ( NC) and iron carbide. However, the substitution became more difficult as the iron loading increased. 再在合成气(2H2/CO)中进行碳化处理,ε-氮化铁中的氮原子可逐渐被碳原子取代而转化为氮碳化铁和碳化铁,但铁的担载量越高,这种取代越困难。
A highly effective method for preparation of carbon-coated iron carbide nanocrystals by AC carbon arc discharge was studied, the yield of magnetic micro powder was over 90%. 采用交流碳弧法高效合成碳包碳化铁纳米晶磁性微粉,磁性微粉产率达90%以上。
The Development and Compare of some Methods of the Coal Making Gas inside and outside China This paper studied the effects of different kind of gas on the reduction degree, metallic ratio and iron carbide ratio in the process of iron carbide production by gas out of coal. 国内外几种主要煤制气技术的发展现状及利弊简评主要研究了以煤制气为还原剂制备碳化铁过程中气体种类对还原度、金属化率、碳化铁率的影响。
The technology of modification with rare earth compound for white cast iron have been studied. The effects of improving white cast iron carbide morphology on the amount of modificator, solidification speed carbide equivalent, the time and temperature of modification such as other technological factor. 对白口铸铁采用稀土复合变质处理工艺进行了研究,试验了变质剂的加入量、凝固速度、碳当量、变质温度及时间等工艺因素对改善普通白口铸铁碳化物形貌的影响。
Research on Iron Carbide Production by Using CO-CO_2-H_2 Mixing Gas 利用CO-CO2-H2混合气体生产碳化铁的研究
The results show that the formation of iron carbide is related to the interaction between the active component and the support of the catalysts. 结果表明:铁碳化物的生成与催化剂活性组分同载体的相互作用有关。
In this paper, the resent research status of iron carbide preparation and all kinds of effects on formation of iron carbide, such as reaction temperature, gas pressure, reaction atmosphere, microstructure of raw material, additive, etc, are summarized elaborately. 本论文对碳化铁制备工艺的研究现状,以及反应温度、压力、反应气氛、原料的微观结构、添加剂等因素对碳化铁生成的影响做了详尽的文献综述。