Synthesis of Mullite Using Low-Grade Bauxite and

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 coal gangue with alumina content of 38.07 wt.% originating from Shanxi Datong were used to synthesize mullite materials.

Hydration mechanism and leaching behavior of

2016-8-15  The bauxite-calcination-method red mud used in this work was from Shandong alumina refining plant. Coal gangue was obtained from Fangshan District, Beijing. The red mud-coal gangue mixture was thermally activated through a compound activation method . Granulated blast furnace slag (GBFS) was provided by Tangshan steel refining plant, and clinker was supplied by Beijing Xingang

(PDF) Feasible Recycling of Industrial Waste Coal

Abstract and Figures Industrial waste coal gangue was successfully utilized to prepare the mullite-based ceramic proppants. The experiments involved the pelletizing technology of proppant through...

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  coal gangue / road base material / durability properties / environmental performance Abstract: Red mud is the solid waste residue of bauxite ore digestion with caustic soda for alumina (Al 2 O 3) production. China is currently the biggest producer of alumina

Environment-oriented low-cost porous mullite

2014-5-30  Coal gangue is lamellar in morphology and its particle size distribution is relatively narrow (Fig. 2 a). Bauxite is morphologically blocky and its particle size distribution is wider (Fig. 2 b). Fig. 2 c gives the particle size distributions of coal gangue, bauxite and their mixture after ball milling.

Environment-oriented low-cost porous mullite

2014-5-30  fabricated via recycling of coal gangue and bauxite at sintering temperatures from 1100 to 1500°C with corn starch as pore-forming agent. The dynamic sintering behaviors, phase evolution, shrinkage, porosity and pore size, gas permeation flux, microstructure and mechanical property were systematically studied. A

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.

Preparation of hollow fiber membranes from mullite

2020-10-21  fabricated from coal gangue and bauxite can undergo an abnormal volume expansion, primarily due to occurrence of secondary mullitization followed by the rapid anisotropic growth of mullite crystals [11,12]. The second stage of mullitization would cause large voids and tube deformation during the sintering process.

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.

Bauxite Coal Mining Suppliers, all Quality Bauxite Coal

Bauxite Coal Mining, Bauxite Coal Mining Suppliers Directory Find variety Bauxite Coal Mining Suppliers, Manufacturers, Companies from around the World at bauxite ore ,coal mining equipment ,bauxite ore buyers, Mining Machinery Parts Gangue rotary kiln for calcining gangue used in paper coating and ceramics industry. Country/Region: China.

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.

Utilization of coal gangue for the production of brick

Moreover, coal gangue and bauxite were mixed at a ratio of 4:1 to pave roadways (Cai and Liu, 2020). Effect of carbonation curing on sulfate resistance of cement-coal gangue paste.

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.

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

Preparation of hollow fiber membranes from mullite

2020-10-21  fabricated from coal gangue and bauxite can undergo an abnormal volume expansion, primarily due to occurrence of secondary mullitization followed by the rapid anisotropic growth of mullite crystals [11,12]. The second stage of mullitization would cause large voids and tube deformation during the sintering process.

Novel Process for Alumina Extraction via the Coupling

2014-3-10  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.

刘晓明 USTB

2021-1-27  [24] N. Zhang, H. Li, X. Liu*, Hydration mechanism and leaching behavior of bauxite-calcination-method red mud-coal gangue based cementitious materials. Journal of Hazardous Materials, 2016, 314, 172-180.

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.

Bauxite Coal Mining Suppliers, all Quality Bauxite Coal

Bauxite Coal Mining, Bauxite Coal Mining Suppliers Directory Find variety Bauxite Coal Mining Suppliers, Manufacturers, Companies from around the World at bauxite ore ,coal mining equipment ,bauxite ore buyers, Mining Machinery Parts Gangue rotary kiln for calcining gangue used in paper coating and ceramics industry. Country/Region: China.

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.

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

用工业固体废料合成沸石分子筛的研究进展 jlu.edu

2020-6-18  高等学校化学学报 ›› 2021, Vol. 42 ›› Issue (1): 40-59. doi: 10.7503/cjcu20200362 • 综合评述 • Pre Next 用工业固体废料合成沸石分子筛的研究进展 王彬宇 1, 李莉 1, 李菁 2, 靳科研 1, 张少卿 1, 张佳楠 3, 闫文付 1 ()

THE THERMAL TRANSMISSION BEHAVIOR ANALYSIS OF

2018-4-24  mite is usually a component of bauxite and a mineral uncommon in coal gangue. The boehmite locating in the bottom layers of coal gangue are formed by desilication effect of kaolinite under the action of humic acid. These results reveal the high content of

煤矸石煅烧活化提取氧化铝技术研究-维普期刊官网】- 中文

维普中文期刊服务平台,是重庆维普资讯有限公司标准化产品之一,本平台以《中文科技期刊数据库》为数据基础,通过对国内出版发行的15000余种科技期刊、7000万篇期刊全文进行内容组织和引文分析,为高校图书馆、情报所、科研机构及企业用户提供一站式文献服务。

Preparation of hollow fiber membranes from mullite

2020-10-21  fabricated from coal gangue and bauxite can undergo an abnormal volume expansion, primarily due to occurrence of secondary mullitization followed by the rapid anisotropic growth of mullite crystals [11,12]. The second stage of mullitization would cause large voids and tube deformation during the sintering process.

Potentially useful elements (Al, Fe, Ga, Ge, U) in coal

Coal gangue has become one of the largest industrial solid waste in China, but it is also a kind of reserve resources. Representative coal gangue samples from different coal mines (mainly in Permo-Carboniferous and Jurassic) in Weibei area in Shaanxi Province are collected, and potentially useful elements (Al, Fe, Ga, Ge, U) in coal gangue are analyzed.

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