Coal Gangue Scientific.Net

Synthesis of Mullite Using Low-Grade Bauxite and Coal Gangue. Authors: Chun Yan Zeng, Zhao Hui Huang, Ming Hao Fang, Yan Gai Liu Abstract: The total bauxite reserves of China are about 3.7 billion tons, however the principal and the first-class bauxite reserves account for only about 20%. A large number of coal gangue was accumulated on the

Improved extraction of alumina from coal gangue by

2016-11-1  Coal gangue, a type of kaolinite clay in coal measures, is one of the largest categories of solid industrial wastes in China. Alumina extraction from coal gangue could offer an alternative to bauxite as a source of alumina. Mechanically modification by grinding is an effective activation method to improve alumina recovery from coal gangue.

Research of Comprehensive Utilization of Coal Gangue

Porous mullite refractory aggregates were successfully fabricated via recycling of coal gangue and bauxite at temperatures ranging from 1100 to 1350 °C, with chaff as the pore former.

Environment-oriented low-cost porous mullite

2014-5-30  The XRD patterns of calcined coal gangue and bauxite are shown in Fig. 1.As shown in Fig. 1a, the crystalline phases detected in coal gangue are quartz as major phase (SiO 2, hexagonal system, PDF# 850797) and potassium mica as minor one (KAl 3 Si 3 O 11, monoclinic system, PDF# 460741). Fig. 1b presents that calcined bauxite mainly consists of corundum (Al 2 O 3, hexagonal system,

RECYCLING OF COAL GANGUE TO PREPARE LOW

2019-7-18  alumina content. Coal gangue is a hazardous by-product of the coal mining industry, and the average production of coal gangue is about 10 15 % of raw coal production [15]. The main composition of coal gangue is also SiO 2 and Al 2 O 3. The properties of ceramic proppants obtained by flint clay and coal gangue should be in some respects

Early-age characteristics of red mud–coal gangue

2009-8-15  The red mud and coal gangue were mixed together at a ratio of 3:2. Then, with a water to solid ratio of 0.30, the red mud–coal gangue mixtures were shaped in small spheres, with a diameter of 3 cm, and dried at 110 °C.After that, they were calcined in a programmable electrical furnace at 600 °C for 2 h.After the sintering process, the resultant red mud–coal gangue mixtures were removed

Novel Process for Alumina Extraction via the Coupling

2019-5-25  A novel process for the coupling treatment of coal gangue and red mud is reported. Red mud containing 23.4% Al2O3, 19.1% SiO2, and 9.4% Na2O by weight was used as the blended ingredients of coal gangue for alumina extraction. Calcination of coal gangue with the addition of Na2CO3 at 850 °C could obtain more than 90% of Al2O3 extraction. Nevertheless, the high consumption of Na2CO3 is

Novel Process for Alumina Extraction via the Coupling

A novel process for the coupling treatment of coal gangue and red mud is reported. Red mud containing 23.4% Al2O3, 19.1% SiO2, and 9.4% Na2O by weight was used as the blended ingredients of coal

Synthesis of Mullite Using Low-Grade Bauxite and

The total bauxite reserves of China are about 3.7 billion tons, however the principal and the first-class bauxite reserves account for only about 20%. A large number of coal gangue was accumulated on the surface of earth, which not only encroaches land but also pollutes the environment. In this study, low-grade bauxite with alumina content of 53.18 wt.% originating from Shanxi Yangquan and

High Strength Glass-Ceramics Fabricated With Coal

2019-8-24  Coal Gangue Bauxite Clay Steatite Limestone 1# 60 30 5 3 2 2# 55 35 5 3 2 3# 50 40 5 3 2 4# 45 45 5 3 2 5# 40 50 5 3 2 Mullite (Al 6 Si 2 O 13) generally has high strength and so was designed as main crystal phase. Combine with utilization rate of the coal gangue; the basic prescriptions were designed as listed in Table 2.

Efficient Extraction of SiO2 and Al2O3 from Coal

Coal gangue is mainly composed of SiO2, Al2O3 and other components. It is a huge reserve of aluminum and silicon resources. The coal gangue stockpiles in China is more than 5 billion tons at present, of which contain Al2O3 more than 1 billion tons, SiO2 more than 2.5 billion tons. It will make supplement for the lack of bauxite resources in China to some extent by extracting Al2O3 with

Research of Comprehensive Utilization of Coal Gangue

Porous mullite refractory aggregates were successfully fabricated via recycling of coal gangue and bauxite at temperatures ranging from 1100 to 1350 °C, with chaff as the pore former. The phase

RECYCLING OF COAL GANGUE TO PREPARE LOW

2019-7-18  alumina content. Coal gangue is a hazardous by-product of the coal mining industry, and the average production of coal gangue is about 10 15 % of raw coal production [15]. The main composition of coal gangue is also SiO 2 and Al 2 O 3. The properties of ceramic proppants obtained by flint clay and coal gangue should be in some respects

赤泥-煤矸石基公路路面基层材料的耐久与环境性能 USTB

2019-9-23  Moreover, coal gangue is also a complex industrial solid waste, which is one of the largest in China. In this study, red mud, coal gangue, fly ash, and other industrial solid wastes were used to prepare a road base material in a laboratory to solve the environmental issues caused by these solid wastes.

赤泥-煤矸石基中钙体系胶凝材料的水化特性*

2013-10-18  赤泥-煤矸石基中钙体系胶凝材料的水化特性* 张娜 1,刘晓明 2 (),孙恒虎 1, 3 1. 清华大学建筑设计研究院有限公司绿色建材与循环经济研究中心 北京 100084 2. 北京科技大学冶金与生态工程学院 北京 100083 3. 美国太平洋大学太平洋资源研究中心

Solidification/stabilization of municipal solid waste

Liu XM, Zhang N, Yao Y, Sun HH, Feng H (2013) Micro-structural characterization of the hydration products of bauxite-calcination-method red mud-coal gangue based cementitious materials. J Hazard Mater 262:428–438. Article CAS Google Scholar

山西大学资源与环境工程研究所

2020-6-29  23. 张圆圆,赵江婷, 马志斌 ,杨凤玲, 程芳琴;Effect of oxygen concentration on oxy-fuel combustion characteristic and interactions of coal gangue and pine sawdust;Waste Managemen;2019,87,288-294;SCI-2区 24.

刘晓明(北京科技大学冶金与生态工程学院教授)_百度百科

刘晓明,男,1980年11月生,山东临沂人,教授,博士生导师,北京科技大学冶金与生态工程学院副院长。中国矿业大学(北京)和美国威斯康星-麦迪逊大学联合培养博士,2010年1月获工学博士学位;同年进入北京科技大学冶金工程博士后流动站,并任冶金与生态工程学院生态系讲师;2012年8月博士后

High Strength Glass-Ceramics Fabricated With Coal

2019-8-24  Coal Gangue Bauxite Clay Steatite Limestone 1# 60 30 5 3 2 2# 55 35 5 3 2 3# 50 40 5 3 2 4# 45 45 5 3 2 5# 40 50 5 3 2 Mullite (Al 6 Si 2 O 13) generally has high strength and so was designed as main crystal phase. Combine with utilization rate of the coal gangue; the basic prescriptions were designed as listed in Table 2.

Comprehensively utilizing waste coal gangue to fabricate

Coal gangue Bauxite Clay Steatite Limestone 1# 60 30 5 3 2 2# 55 35 5 3 2 3# 50 40 5 3 2 4# 45 45 5 3 2 5# 40 50 5 3 2. Comprehensively utilizing waste coal gangue to fabricate high strength glass-ceramics 71 illustrate the properties of the glass-ceramics formed at

The Effect of Sintering Temperature on Phase Evolution

2020-6-17  Natural bauxite and coal gangue from Yangquan in Shanxi province in China were used as the raw materials and lime carbonate (CaCO 3 ≥98%) was added as a sintering additive. Chemical composition of them was displayed in Table 1. 2.2 Preparation The weight ratio of natural bauxite, coal gangue, and lime carbonate was 55:40:5.

山西大学资源与环境工程研究所

2013-4-17  4.Yanxia Guo, Qian Zhao, Yaoyao Li, Fangqin Cheng*, Helen H. Lou. Novel Process for Alumina Extraction via the Coupling Treatment of Coal Gangue and Bauxite Red Mud. Ind. Eng. Chem. Res., 2014, 53 (11): 4518–4521. (SCI 2区)

煤矸石煅烧活化提取氧化铝技术研究-维普期刊官网】- 中文

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Solidification/stabilization of municipal solid waste

Liu XM, Zhang N, Yao Y, Sun HH, Feng H (2013) Micro-structural characterization of the hydration products of bauxite-calcination-method red mud-coal gangue based cementitious materials. J Hazard Mater 262:428–438. Article CAS Google Scholar

硕士生导师简介-土木与交通学院 ncwu.edu

2016-3-14  Preparation of Bauxite-Based Homogenized Mullite Grogs with Bauxite and Coal Gangue(EI). Advanced materials Research, 2011, 199-200, 1940-1944 . 6. Zhongzheng Yang, Jianying Wei, Haitao Liu, Wenxuan Zhao, Yue Zhang. Preparation and Antibacterial,

张化永_百度百科

(35) Luyi Zhang, Huayong Zhang*, Wei Guo, et al. Sorption characteristics and mechanisms of ammonium by coal by-products: slag, honeycomb-cinder and coal gangue. International Journal of Environmental Science and Technology, 2013, 10(6): 1309-1318.

山西大学资源与环境工程研究所

2020-6-29  23. 张圆圆,赵江婷, 马志斌 ,杨凤玲, 程芳琴;Effect of oxygen concentration on oxy-fuel combustion characteristic and interactions of coal gangue and pine sawdust;Waste Managemen;2019,87,288-294;SCI-2区 24.

刘晓明(北京科技大学冶金与生态工程学院教授)_百度百科

刘晓明,男,1980年11月生,山东临沂人,教授,博士生导师,北京科技大学冶金与生态工程学院副院长。中国矿业大学(北京)和美国威斯康星-麦迪逊大学联合培养博士,2010年1月获工学博士学位;同年进入北京科技大学冶金工程博士后流动站,并任冶金与生态工程学院生态系讲师;2012年8月博士后