Coal Blend
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. Effect of high petroleum coke additions on metallurgical coke quality and optical texture
Abstract The objective of the present study was to evaluate the effect of high additions of petroleum coke on the rheological properties of coking coal and the quality of cokes produced on pilot scale at the Usiminas R&D Center. For this purpose, blends using petroleum coke additions of 5%, 10%, 20%, 30% and 40% were produced. The results showed that the ble
REM, Int. Eng. J.. Publicado em: 2020-06
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2. Influence of moisture and particle size on coal blend bulk density
Abstract Coal blend bulk density is an important property in the coking process. Some variables, such as moisture and particle size, which are controlled or measured in the coal beneficiation process in steel mills, exert a strong influence on this feature. This study aims to understand the density variation of coal blends by the influence of moisture and pa
REM, Int. Eng. J.. Publicado em: 2019-06
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3. Combustibility behavior of PCI coals, green petroleum coke and charcoal fines used as fuel for injection into blast furnace tuyeres
Abstract Pulverized coal injection (PCI) into blast furnace tuyeres is widely used by integrated steel mills worldwide to reduce the consumption of coke and costs. High injection rates are desirable. The big challenge is to achieve them with cheaper and lower quality raw materials, without losing the quality of the hot metal and the productivity of the blast
REM, Int. Eng. J.. Publicado em: 2019-03
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4. Estudo para o uso de matérias-primas nacionais em misturas de carvões para obtenção de coque com características requeridas em altos-fornos de alta produtividade
This study has the objective of exploring the possibility of utilizing alternative raw materials available in the country in the coal blends with high quality coals for producing high quality coke for the blast furnaces of Gerdau Acominas, Ouro Branco, Brasil.Characterization of the constituents of the blends (Low grade coal from Santa Catarina, Petroleum co
Publicado em: 2007
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5. Estudo Termoanalítico, Cinético e Reológico de Biodiesel Derivado do Óleo de Algodão / Thermoanalytic, kinetic and rheological study of biodiesel derived from cotton oil
Most of the world energy consumption derives from oil, coal and natural gas. The shortage of the energy sources, especially the energy from fossil fuels, and moreover the impossibility of its renewal has motivated the development of technologies that allow for the usage of renewable energy sources. Biodiesel is biodegradable, renewable and it obeys the cycle
Publicado em: 2006
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6. AN INTEGRATING MODEL FOR THE ACQUISITION AND USE OF METALLURGICAL COALS IN STEELWORKS
The coal supply to steelworks is usually seen as presenting two distinct but related problems: (i) how to determine the amounts of different types of coals to buy from the available suppliers, typically planned ahead for a year and (ii) the operational problem of using the coals available in the stockyards on a daily and weekly basis. The supply model develo
Publicado em: 1995