PDF《1/3 焦煤成焦特性及配煤炼焦方案的研究》

Study on the Coke-Forming Characteristic of 1/3 Coking Coal and Its Coal Blending Scheme for Coking Mingyou Wu1,2 , Yongjian Bai1 , Chu-an Xiong3 , Deping Xu1 , Yonggong Wang1 1.

School of Chemical and Environmental Engineering,China University of Mining &

Technology,Bejing, 100083,China 2. Heilongjiang LongMay Mining Group Co., Ltd. Haerbin, 150090,China 3.School of Resource and Environmental Engineering, Heilongjiang Institute of Science and Technology, Harbin, 150027, China 1. [email protected],2. [email protected] Abstract: Proximate analysis, petrographic analysis and maceral composition analysis of four different 1/3 coking coal, marked as LM1,LM2,LM3,LM4, were carried out firstly in this paper. And then the coke-forming characteristic of single 1/3 coking coal and Coal blending coking perpormance of different 1/3 coking coal were tested based on the stamp-charge coking test in small iron-box and

40 kg small coke-oven experiments separately. Mean maximum reflectance of vitrinite and caking index were used for making the coal blending scheme. The result showed that the LM1 and LM4 had good Coke-forming characteristic of single coal, and its Coke-forming characteristic could be promoted with the increasing of the amount of ho- moeollinite and desmocollinite. It was practicable that coal blending for coking of different 1/3 coking coal with different caking property and adding small proportional coke podwer. The scheme of coal blending for coking , which met the standard of the grade-1 or grade-2 metallurgical coke, were selected according to the coke quality of small coke-over test. Keywords: 1/3coking coal;

coke-forming characteristic;

petrographical coal blending;

coal blending coking 1/3 焦煤成焦特性及配煤炼焦方案的研究 吴明有 1,2 , 白永健

1 ,熊楚安

3 ,许德平

1 ,王永刚

1 1. 中国矿业大学化学与环境工程学院,北京,中国,100083 2. 黑龙江龙煤矿业集团有限公司,哈尔滨,中国,150090 3. 黑龙江科技学院资源与环境工程学院,哈尔滨,中国,150027 [email protected], [email protected] 摘要: 论文采用 LM1,LM2,LM3.LM4 四个 1/3 焦煤为原料,在对其进行工业分析煤岩分析及显微组 分分析与讨论后,利用小铁箱实验,评价其单煤成焦特性,利用 40KG 小焦炉实验,研究其配煤炼焦 特性,利用煤岩及粘结指标进行配煤方案制订.研究结果表明,LM1, LM4 具有良好的单煤成焦特性, 煤岩显微组分中均质镜质体和基质镜质体的含量增加,有利于其成焦特性的提高,不同粘结性 的1/3 焦煤配煤炼焦及少量焦粉的配入是可行的,通过对小焦炉焦炭质量的分析研究,筛选出多个一级或二 级冶金焦的配煤方案. 关键词: 1/3 焦煤;

成焦特性;

煤岩配煤;

配煤炼焦

1 引言 中国的焦煤和肥煤资源呈紧缺的趋势且分布不 均,这导致焦煤和肥煤的价格不断攀升,肥煤和焦煤 的价格比 1/3 焦煤的价格高出

350 元/吨左右,因此, 许多现代焦化厂都根据就近资源的特点,采用配煤炼 焦[1,2,3] ,并呈蓬勃发展的形势.配煤技术的发展,主 要包括区域性配煤,精确配煤[4,5] ,扩大炼焦煤范围及 配煤专家系统[6] 等几个方面.传统的配煤方法主要考 虑以煤的煤质指标为参数,依据某些指标的加和特征 指导配煤炼焦,而煤岩配煤[7] 则是从煤岩组成与分析 的角度出发,以煤的镜质组平均最大反射率及反射率 分布直方图为依据,对炼焦原料煤进行分析研究,指 导配煤.在炼焦生产中,常规配煤技术主要以焦煤和 肥煤[8] 为主,配入少量低阶或高价煤,从长远的发展 看,肥煤和焦煤资源日益缺乏.因此,如何大量利用 贮量丰富的 1/3 焦煤进行炼焦, 或以 1/3 焦煤为主, 混 配少量的肥煤或焦煤进行炼焦,实现资源的合理、高 效利用,可增大企业的经济效益和满足炼焦工业可持 续发展的要求.论文以不同矿井的 1/3 焦煤为主要原 料,研究其成焦特性,并用煤岩分析的方法,结合传 统的配煤方法,研究以 1/3 焦煤互配而制备优质冶金 焦的配煤方案.