[PDF] Top 20 Rev. Esc. Minas vol.68 número1

... Eu adoraria falar mais sobre coisas mais elevadas, mas sei quantos obstáculos ainda têm que serem vencidos, para que se possa aumentar o Fator de Impacto, redu- zir tempo de publicação[r] ... See full document

... A design of experimental techniques was used to evaluate the inluence of factors (resin type, use of adhesion promoter, compaction pressure, vibration duration, use of a vacuum, and cu[r] ... See full document

... Eu adoraria falar mais sobre coisas mais elevadas, mas sei quantos obstáculos ainda têm que serem vencidos, para que se possa aumentar o Fator de Impacto, redu- zir tempo de publicação[r] ... See full document

... So three environmental indicators were chosen to evaluate the sustainability of mining and agriculture: the water and energy consumption and evaluation of landscape metrics for deter[r] ... See full document

... Projeto Minas-Rio é o maior projeto da Anglo American no mundo e consi- dera um circuito de remoagem com Vertimill para adequar a distribuição de tamanho de partículas para alimentar o mineroduto que irá ... See full document

... moment of transition from OP to UG methods, because if this point is not well deined it can implicate in material losses as well as in the impossibility of applying underground minin[r] ... See full document

... δ -ferrite on the pitting corrosion resis- tance of austenitic stainless steel was investigated and the results indicated that δ -ferrite had a detrimental effect on the pitting corr[r] ... See full document

... Investigations on vertically upward directional solidiication of hypoeutectic Al–Si alloys have pro- posed a CET criterion based on a critical cooling rate of about 0.17 K/s with the [r] ... See full document

... Thus, this study assessed the processing of a cheap and high-grade industrial magnesia compound in obtaining magnesium hydroxide slurries through a hydration reaction using different h[r] ... See full document

... The present paper proposes a solid- liquid combination of tests to optimize water from mineral process recovery contained in the tailings generated in the phosphate rock mineral proce[r] ... See full document

... In the next step, in possession of the results of the leaching with aqua regia and commercial cyanide-based leachate, leaching tests were performed with alternative reagents (thiosul[r] ... See full document

... zoic: Minas Supergroup and Itacolomi Group (Dorr II, 1969; Alkmim and Marshak, 1998), and occurrences of maic and granitic intrusions of several generations (Dorr II, 1969; Marshak and Alkmim, ... See full document

... This study gathers data from the geochemical investigation of major, minor and trace el- ements (including rare earth elements) of the siliceous, amphibolitic and magnetitic types of i[r] ... See full document

... Forquilha IV tailings dam is being built in the area of Mina de Fábrica, in the city of Ouro Preto, Minas Gerais. The reservoir of the dam will be capable of storing a volume of approximately 35 Mm³ tailings. Its ... See full document

... In the present research, the concrete used for the production of hollow blocks for masonry underwent testing that simu- lated 20 years of rain exposure, consider- ing the annual precip[r] ... See full document

... These opals originated from hydrothermal processes and are found mainly as veinlets and veins in the sandstones of the Serra Grande Group, sectioned by diabase dikes and sills of the [r] ... See full document

... The Direct Problem is composed of the heat conduction equa- tion, with boundary conditions of the irst kind and is solved by the Central Finite Differences Method, with the explicit [r] ... See full document

... To obtain the starting powders, the AISI 52100 steel scrap was submitted to a process of high energy ball milling, which was milled pure and with 1 and 3 % of niobium carbide (NbC) add[r] ... See full document

... This study aimed to investigate with the aid of variance analysis, the inluence of growth ring orientation to obtain toughness for Angelim Saia ( Parkia pendula ), Eucalyptus grandis,[r] ... See full document

... Results showed that the difference between PIV associated to speckle patterns and the analytic displacement values is increased along the beam length for a load of 1.96 N as an evidenc[r] ... See full document