نتایج جستجو برای: non coking coal

تعداد نتایج: 1347315  

Journal: : 2023

To date, there is a tendency to increase the pace of production in field ferrous metallurgy. The constant demand for steel products accompanied by an prices raw materials, including carbon reducing agents. In conditions domestic market Kazakhstan, great interest study and possibility using low-baking non-baking coal as material special coke used agent metallurgy, relevance expediency which also...

2012

Coal is a highly variable fuel, which ranges from high heating-value anthracite through various forms of bituminous coal to intermediates in coal formation, viz. lignite and peat. Each of these types of fuel can contain different levels of moisture, non-combustible inorganic material (ash), sulfur, and sometimes significant levels of other impurities, e.g. arsenic, fluorine, lead and mercury. R...

2004

Association of methane with coal poses a serious explosion risk in underground coal mining. Besides, it is a potent green house gases significantly contributing to global warming. Therefore, its commercial exploitation is being widely recognised as (a) a fuel resource to bridge the energy gap (b) making coal mining safer (c) providing cleaner energy and (d) checking the building of green house ...

2013
H. Aritani K. Kuramochi

A Mo-modified H-MFI zeolite (Mo/H-MFI) catalyst is one of a typical catalyst for direct GTL (Gas to liquid), because it shows high activity for dehydroaromatization of methane in absence of oxygen. In this reaction, reduction of Mo species is brought about in contact with methane in initial step, and reduced Mo ions react methane to form carbide and/or oxycarbide species in next step. It has be...

Journal: :Occupational and environmental medicine 1994
A Seaton

It has recently been suggested that the inhalation of coal in the absence of complicated coal workers' pneumoconiosis (CWP) or smoking can lead to disabling airways obstruction. The cause of such obstruction has been variously attributed to emphysema or bronchitis. The frequency of significant airways obstruction in a group of United States coal miners seeking compensation for occupationally in...

2005
G Zaldivar

It has recently been suggested that the inhalation of coal in the absence of complicated coal workers' pneumoconiosis (CWP) or smoking can lead to disabling airways obstruction. The cause of such obstruction has been variously attributed to emphysema or bronchitis. The frequency of significant airways obstruction in a group of United States coal miners seeking compensation for occupationally in...

Journal: :Chemical communications 2013
Xiaoqing Yan Xiaojuan Wang Yu Tang Guicen Ma Shihui Zou Renhong Li Xiaogang Peng Sheng Dai Jie Fan

Ordered, extra-large mesopores with highly loaded gold nanoparticles (AuNPs) exhibits unique sintering- and coking-resistant properties in gas-phase, cyclohexanol selective aerobic oxidation.

Journal: :Isij International 2023

In the steel industry, development of a coke production technology that uses low-grade coal is desired. Decarbonization by use plant biomass also an important option. A candidate formed coke, which produced forming non-coking using binder, followed carbonization. Kraft lignin, by-product in pulp and paper mills potential binder because it aromatic polymer dissolved from wood. this study, therma...

Journal: :Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] 2016
Maryam Karimi Mehdi Hassanshahian

Phenol and phenolic compounds are environmental pollutants present in industrial wastewaters such as coal tar, oil refineries and petrochemical plants. Phenol removal from industrial effluents is extremely important for the protection of environment. Usually, phenol degradation is carried out by physicochemical methods that are costly and produce hazardous metabolites. Recently, phenol biodegra...

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