Beneficiation of a low-grade iron ore was investigated by combination of the low-intensity magnetic separation and reverse flotation methods. The main constituents of the representative sample were 36.86% Fe, 8.1% FeO, 14.2% CaO, 13.6% SiO2, and 0.12% S based on the X-ray fluorescence, titration, and Leco analysis methods. The mineralogical studies by the X-ray diffraction, scanning electron mi...

This study investigated the impacts of different brown seaweed species—Ascophyllum nodosum, Sargassum fulvellum, Ecklonia maxima, Lessonia flavicans, nigrescens, and Laminaria japonica—on rumen fermentation methane (CH4) mitigation. The current in vitro batch culture for 24 h at 39 °C evaluated these species two experimental designs: as feed additive feed. control group both designs was compose...

Six ruminally cannulated steers were used to evaluate the influence of dietary concentrate level on digestion of fiber, rumen pH and fill, and liquid and particulate passage rates. Total tract digestibility of potentially digestible fiber, but not total fiber, was decreased with each increase in concentrate level. Digestion coefficients suggest that potentially digestible fiber is a more approp...

forty-two weaned lori-bakhtiari lambs were taken in an investigation for the effects of two-nutritional management methods of restricted vs. re-alimentation feeding on intake, growth and as well on the cost benefit analysis. during the feed restriction period (frp), the control (c) animals were fed low-quality roughage ad libitum, plus mixed concentrate. the restricted animals (r) were fed only...

The composition of non-carcass thin-tailed sheep fed Indigefera zollingeriana with different rearing systems, was evaluated using twenty an average initial body weight 18.3 ± 2.01 kg. variables observed in this study included the head, feet, skin, tail, liver, spleen, lungs, heart, kidneys, rumen, reticulum, omasum, abomasum, intestines, empty viscera and omnetal fat. design used a factorial co...

Partition curves are widely used to determine the spiral separator efficiency. In this work, the partition curves were used in order to investigate the particle transportation to concentrate and tailing streams. Simulation of fine particle removal using the size-by-size partition curves showed that the recovery of gangue particles to concentrate can decrease 8.7%. It also showed that the recove...