首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到17条相似文献,搜索用时 78 毫秒
1.
在唐山不锈钢有限责任公司烧结厂原料条件下对印度粉、巴西粉和地方精矿粉进行了烧结杯实验和烧结矿冶金性能实验,找到了适宜的印度粉和巴西粉配矿方案,能得到较好的烧结指标。  相似文献   

2.
为寻求科学合理的进口粉搭配比例,更好地指导烧结生产,对宣钢常用进口粉——印度粉、巴西粉1、巴西粉2、澳粉1、澳粉2物理性能和矿相进行了分析,重点对同化温度、液相流动性等烧结基础特性进行了研究,运用铁矿粉烧结特性互补配矿原则,结合其物理性能,摸索出了烧结生产常用进口粉的适宜配比范围,在生产中得到了较好的应用。  相似文献   

3.
贺先新 《武钢技术》1992,(1):17-20,40
1 前言印度粉矿是武钢购买的新矿种。为了全面分析了解印度粉矿的理化性能,掌握它在烧结中的行为以及对烧结矿冶金性能的影响,我们做了印度粉矿的烧结试验。试验内容包括:①印度粉矿的理化性能;②印度粉矿的配矿烧结试验;③配20%的印度粉矿时,烧结工艺参数合理范围的确定;④印度粉矿烧结矿的冶金性能。通过试验,我们认为这种从印度MADR  相似文献   

4.
通过两种单烧性能差的矿粉(毛塔粉和巴西粗粉)组合来代替巴西精粉。混矿原则发挥矿物本身烧结优点,抑制缺点。分析烧结杯各项参数,比较烧结性能,结合矿相分析,得出如下结论:混矿替换巴西精粉后,烧结利用系数和成品率增加,燃耗总体呈降低趋势,转鼓指数并没有降低趋势。矿相分析,除粗粒镶嵌结果有所增加,代替的过程中对矿相影响不大。混矿替代巴西精粉在烧结杯试验过程中可行。  相似文献   

5.
刘彦征 《山东冶金》2002,24(Z1):26-27
巴西 CVRD矿具有含铁品位高、有害杂质少、烧结性能良好的特点。采用 CVRD矿作为烧结配矿的主矿 ,经合理配比和优化工艺参数 ,烧结生产率提高 ,烧结矿质量改善 ,冶金性能提高  相似文献   

6.
通过不同进口粉矿配比的烧结实验室试验,研究并找出了巴西CVRD粉矿和印度高品位粉矿的最佳配入量以指导生产,提高烧结矿的质量.  相似文献   

7.
为进一步降低马钢烧结用矿成本,开展了降低巴西矿配比的烧结试验研究。结果表明,在不增配其他精矿的情况下,巴西矿配比从36%逐步降低至10%,烧结矿转鼓强度明显下降,烧结固体燃耗逐步上升,成品率下降,而烧结矿冶金性能总体改善。通过在烧结配矿中增配10%与巴西矿高温特性指标相近的高品位铁精矿,有效改善了巴西矿配比降低带来的负面影响,并实质性地降低了配矿成本,达到了预期目标。  相似文献   

8.
高品位印度矿粉烧结性能试验研究   总被引:2,自引:0,他引:2  
为了拓宽烧结用料,达到优化烧结原料结构的目的,太钢对高品位印度矿的烧结性能进行试验研究,结果表明,配用高品位印度矿,烧结矿的性能能够满足高炉炼铁生产的要求。  相似文献   

9.
为提高烧结矿品位,在首钢拟定烧结原料结构条件下,采用烧结杯制备烧结试样,进行配加巴西精粉的烧结杯实验,应用转鼓测试强度、光学显微镜和X射线衍射分析显微结构和矿相组成,研究了巴西精粉配比的增加对烧结矿技术指标的影响,重点探讨其与烧结质量的相关性。试验结果表明,提高巴西精粉的配比可以提高烧结矿的品位,使烧结矿品位保持在一个较高的水平(达55%以上);选取巴西精粉和印度粉配比的合理范围对提高烧结质量是非常必要的。  相似文献   

10.
为了解巴西CVRD粉矿比例降低对烧结的影响,在试验室条件下进行了5组烧结试验研究,包括烧结矿的冶金性能试验以及矿物组成及结构的研究。研究表明,配用20%巴西CVRD粉矿的第4组烧结矿较为理想,采用澳粉3代替部分巴西CVRD粉矿是可行的;5组烧结矿都是以铁酸钙为主要粘结相的高品位烧结矿,具有较高的强度;在高碱度、高料层的烧结工艺条件下,马钢烧结配矿时可以部分降低巴西CVRD粉矿,对烧结矿质量指标影响不大。  相似文献   

11.
 Pilbara blending iron ore powder (PB powder) is blending ores with good and poor quality iron ores, so how to use PB power effectively is a problem. The self-characteristics of PB powder and its single-components were studied respectively, such as the macroscopic properties, microscopic properties, and high-temperature properties; the behavior and effect in the sintering were mastered. Then based on the new ore-proportioning idea of iron ores sintering characteristics complementary, the principles on the effective use of PB powder were discussed, and was further validated through the sintering pot test and industrial production. The results show that: PB powder is composed of three kinds of iron ore, and the sintering characteristics of different iron ores are obviously discrepant. With the ore-proportioning optimization based on the iron ores sintering characteristics complementary, the proportion of PB iron ore powder can be increased to more than 45%.  相似文献   

12.
为了研究某钢铁企业常用铁矿粉基础特性之间的关系,优化烧结配矿,采用微型烧结法对其常用铁矿粉的烧结基础性能进行了试验研究,包括铁矿石的同化性、液相流动性、黏结相强度及铁酸钙生成能力。结果表明,澳金布巴粉同化温度最低,其同化性最强;巴西1SSFT同化温度最高,其同化性最弱。南非库伯粉液相流动性最好,澳纽曼粉流动性最差。澳金布巴粉黏结相强度最高,加拿大粉最低,澳纽曼粉铁酸钙生成能力最强,巴西2BRBF铁酸钙生成能力最弱。通过对某钢铁企业常用8种铁矿粉的基础特性研究,进行基础特性优化互补的配矿烧结杯试验,为烧结厂优化配矿提供依据。  相似文献   

13.
 In order to obtain good sintering performance, it is important to understand sintering properties of iron ores. Sintering properties including chemical composition, granulation and high-temperature behaviors of ores from China, Brazil and Australia. Furthermore, several indices were defined to evaluate sintering properties of iron ores. The results show that: for chemical composition, Brazilian ores present high TFe, low SiO2, and low Al2O3 content. For granulation, particle diameter ratio of Brazilian ores are high; particle intermediate fraction of Chinese concentrates are low; and average particle size and clay type index of Australian ores are high. For high-temperature properties, ores from China, Brazil and Australia present different characteristics. Ores from different origins should be mixed together to obtain good high-temperature properties. According to the analysis of each ore′s sintering properties, an ore blending scheme (Chinese concentrates 20%+Brazilian ores 40%+Australian ores 40%) was suggested. Moreover, sinter pot test using blending mix was performed, and the results indicated that the ore blending scheme led to good sintering performance and sinter quality.  相似文献   

14.
随着鞍钢自产铁精矿供应量逐年减少,扩大进口矿用量成为必然。本文根据鞍钢炼铁总厂烧结车间和西区烧结车间的原料条件,在实验室进行了配加巴西南部粉矿的烧结杯试验研究。结果表明:(1)配加巴西粉矿后超过20%后,烧结矿的转鼓强度下降幅度明显。随着巴西南部粉矿配比增加,垂直烧结速度增大,利用系数提高,燃耗略有提高。(2)相同配比条件下,配矿C方案时烧结矿转鼓要高于A、B方案,但烧结速度较慢、烧结机利用系数低,烧结燃耗增加。(3)配加巴西粉矿后超过20%后,烧结矿的低温还原粉化趋于严重。相同配比条件下,配矿C方案时烧结矿低温还原粉化最优。据此认为:采用巴西南部粉矿配比不超过20%时,可获得较好的烧结指标。工业应用中应避免采用B配矿方案。  相似文献   

15.
介绍了太钢烧结配用印度果阿矿粉的烧结试验研究,实验室试验和工业试验结果表明:印度果阿矿粉的烧结性能及冶金性能与H.I矿粉的差别不大,能够适于太钢烧结生产之用。同时,对太网烧结使用果阿矿粉的适宜条件进行了初步分析。  相似文献   

16.
Assimilation behaviors of 7 kinds of iron ores from Australia, Brazil, India, South Africa and China were evaluated and analyzed. On the basis of that, four ore blending principles were proposed, and seven groups of iron ore powder blending schemes were designed. The ores of different types or from different places are shown apparently different in assimilation. The assimilation of hematite in Australia, Brazil and India is relatively high, but the assimilation of magnetite in South Africa and China and specularite in China is relatively low. The assimilation of the ores has negative correlation with MgO content and binary basicity, while the assimilation of the ores has positive correlation with porosity, SiO2 and Al2O3 contents, and crystal water. The iron ores with smaller crystal size and microstructure looseness have relatively higher assimilation. Assimilation of mixed ores has relationship of linear, arch and “S” types to the ratio of single iron ore powder. When the charge ratio of ore is less than 25%, it possesses additivity, providing theoretical basis for optimization of ore matching.  相似文献   

17.
采用TG-DSC法对进口铁矿粉添加生石灰的烧结性能进行了研究。实验结果表明,此法可以表征铁矿物烧结过程中发生的物理和化学变化,弄清了添加8.45%生石灰后巴西MBR粗粉、澳大利亚库利安诺宾粗粉和哈默斯利粗粉在烧结过程中产生液相的初始温度、主体矿物熔化温度,以及结晶与凝固温度。三者相比,库利安诺宾粗粉和巴西MBR粗粉比哈默斯利粗粉更有利于低温烧结。实验还发现,铁矿物在熔化和凝固中分别伴随着赤铁矿分解—磁铁矿氧化过程,铁酸半钙存在对磁铁矿氧化有抑制作用。  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号