The New Zealand sea sand ore is a kind of vanadia–titania magnetite formed by erosion in the coastal zone. Because its coarse particle size, smooth spherical particles, complex chemical composition, it has been added to sinter as an auxiliary material. Based on principle optimizing blending strengthen advantages and weaken disadvantages, this paper used raw that not undergone any pretreatment m...

Dilution can best be defined as the proportion of waste tonnage to the total weight of ore and waste in each block. Predicting the internal dilution based on geological boundaries of waste and ore in each block can help engineers to develop more reliable long-term planning designs in mining activities. This paper presents a method to calculate the geological internal dilution in each block and ...

Isobaric and cooling zone of iron ore reactor have been simulated. In this paper, heat and mass transfer equation are formulated to perform the temperature and concentration of gas and solid phase respectively. Temperature profile for isobaric zone is simulated on the range temperature of 873-1163K while cooling zone is simulated on the range temperature of 733-1139K. The simulation results hav...

The present research paper deals with the oxidation process of molybdenum ore. The main target of the present study is the up-gradation of MoO3 from roasted molybdenum ore by a leaching process without waste generation. The most important application of hydrometallurgical processing is the leaching process of the ore and it is the primary process to make pure metal from ore. The present investi...

During the roasting process of fluxed pellets in a coal-fired rotary kiln, incomplete combustion pulverized coal injection accelerates deposit formation, which further limits production efficiency pellets. In order to eliminate above problem, this study investigated influence MgO on formation mechanism. The thermodynamic analysis revealed that could increase melting temperature silicates with 0...

Iron ore concentrate is enriched by flotation prior to form iron ore green pellets in order to reduce phosphorus content in the ore concentrate. A flotation reagent is used in this process and it is known to incorporate air bubbles and eventually deteriorate the strength of the pellets. These bubbles were therefore characterized both qualitatively and quantitatively by cryogenic scanning electr...

James A. Schmitz (2005) documents, in a well-known case study, a dramatic rise in productivity in the U.S. and Canadian iron-ore industry following an increase in competition from Brazil. Prior to the increased competition, the industry was not competitive. Surplus in profits was divided between business and unions. Schmitz attributes the increase in productivity to a change in work practices i...

in this paper, iron ore sample from the chadormalu was investigated to determine some comminution properties. chadormalu deposit is one of the largest iron ore mine in iran, which is located in yazd province. the representative ore sample contained 57%fe, 0.9%p and 0.17%s. the sample was crushed; afterward, it was ground in various grinding times according to the bond ball mill approach to spec...