Low grade diasporic bauxite in the Jajarm mine with an A/S (Al2O3/SiO2) ratio of 2.3 is not usable in the Bayer process at Jajarm Alumina Complex. Due to the severe interlocking effect between the diaspore and aluminosilicate minerals (Chamosite and Kaolinite) and iron-containing minerals in a microcrystal matrix, the thermo-chemical treatment, which is independent from micro-mineralogy, was ch...

Jajarm Alumina Plant, the only Alumina powder producer in Iran, generates 500,000 tons of red mud annually. The commonest method for final disposal of red mud in Iran is Tailing dam which is neither cost-effective nor environmentally-friendly. The main objective of this study is to evaluate the possibility of red mud recovery to be used for stabilization of loose soils. Red mud samples have bee...

Reliability is an important consideration in the planning, design and operation of engineeringsystems. As the size and complexity of mining equipment continue to increase, the implica-tions of equipment failure become ever more critical. One method to mitigate the impact offailures is to improve the reliability of the equipment. One of the purposes of system reliabil-ity analysi...

Insulators have an important role in electrical distribution line. They has a as mechanical support and on insulation that isolate the live line dead part of poles. Environmental factors will affect performance insulator. Every area where isolator was installed unique characteristics, therefore characteristics each insulator be differ from to others area. This study investigated 20 kV for some ...

The morphological structure of turfs and the activity main enzymes antioxidant protection: peroxidase, superoxide dismutase (SOD) catalase dominant species mosses Barbula unguiculata Hedw,, Bryum caespiticium Hedw., argenteum Hedw. Brachythecium salebrosum (Hoffm. eх F.Weber & D. Mohr) Schimp. from different transects northern exposure sulfur mining dump No. 1 in summer autumn seasons were ...

La gota es el trastorno del metabolismo de las purinas que se caracteriza por acumulación ácido úrico aumento su producción o disminución excreción. Con paso tiempo, exceso urato monosódico permite deposite en diferentes tejidos organismo; siendo particularmente infrecuente la presentación tofos a nivel facial. Paciente masculino adulto 56 años, con antecedente hace 38 años y presencia gotosos ...