Motivated by the construction of new examples of Artin-Schelter regular algebras of global dimension four, J.J.Zhang and J.Zhang (2008) introduced an algebra extension AP [y1, y2;σ, δ, τ ] of A, which they called a double Ore extension. This construction seems to be similar to that of a two-step iterated Ore extension over A. The aim of this paper is to describe those double Ore extensions whic...

According to the publication by US Minerals Survey in 1999, the total reserve of manganese ore in the world is 0.66 billion tons. See Table 1. Table 1 World Manganese ore reserve(Mn metal weight, million tons) __________________________________________ Name of counties Reserve in 1999 __________________________________________ South Africa 370 Ukraine 135 China 40 India 34 Australia 26 Gabon 20...

Mining activities generate residues during the ore concentration process. These wastes are placed into large tailing storage facilities, and upon mine closure, these tailings must be reclaimed. This study aimed to determine how different reclamation methods, involving combinations of planted boreal woody species organic amendments application (paper mill sludge biosolids, chicken manure, topsoi...

The impact behavior between the charge and lifter has significant effect to address the mill processing, and is affected by various factors including mill speed, mill filling, lifter height and media shape. To investigate the multi-body impact load behavior, a series of experiments and Discrete Element Method (DEM) simulations were performed on a laboratory-scale mill, in order to improve the g...

Here, we report the draft genome sequence of the betaproteobacterium Ideonella sp. strain A_228. This isolate, obtained from a bog iron ore-containing floodplain area in Germany, provides valuable information about the genetic diversity of neutrophilic iron-depositing bacteria. The Illumina NextSeq technique was used to sequence the draft genome sequence of the strain.

The present work evaluated two high-density polyethylene (HDPE) geomembranes exhumed from mining facility constructions in Brazil. MIN sample was a pond for water use the iron ore process after 7.92 years of exposure. MIN2 spillway channel ferronickel tailing dam 10.08 service. physical evaluations showed high depletion antioxidants that temperature range 200 °C. samples presented brittle tensi...

Rock-filled concrete (RFC) has good performance in terms of energy savings, cost reduction, and CO2 emissions as a novel massive construction technology. There have been studies into replacing natural rocks RFC with large blocks solid waste, this method used on several sites. However, the granular powdery waste utilized is limited, consequence special requirement self-compacting (SCC) RFC. The ...