With the great breakthrough in natural gas exploration of Paleozoic Taiyuan formation Longdong exploratory area southwestern part Ordos Basin, it is urgent to solve petrological nomenclature sedimentary bauxite, so as further study pore mechanism, distribution law, and controlling factors bauxite reservoirs. In this paper, X-ray diffraction, polarizing microscope, scanning electron other method...

Bauxite is mainly used to produce aluminium and calcium aluminate cements. Both applications carry high environmental impacts. However, the carbon emissions generated from mining bauxite (3–5 kg CO 2 e/t) are negligible when compared those for or cement production (620–700 e/t CEM II). Hence, an alternative use would lower impacts worldwide. This paper measures pozzolanic hydraulic capacity of ...

Reductive leaching in the Bayer cycle using iron (2+) allows for Al extraction to be significantly increased through magnetization of Al-goethite and Al-hematite. However, use expensive salts or powder as a source leads significant increase production costs. In this work, feasibility new method, reductive bauxite an electrolysis process, was investigated. The reduction minerals boehmitic both s...

A small mammal survey was conducted in the Bakhuis Mountains of western Suriname in South America as part of a larger environmental and social impact assessment for a proposed bauxite mining concession. The objectives were to establish a baseline study of species diversity and relative abundance for comparison of seasonality, areas, and habitats to facilitate the identification and monitoring o...

Experimental research was carried out to produce pellets from bauxite residue for the further extraction of iron and alumina. Bauxite limestone with three different mixture compositions were pelletized experimentally via agglomeration followed by drying sintering at elevated temperatures. X-Ray diffraction (XRD) scanning electron microscopy (SEM) used phase microstructural analysis, respectivel...

Abstract Bauxite residue (BR), a by-product of alumina and aluminum production, consists high aluminum, silica, iron content, sodium from the bauxite ore digestion during Bayer process. This waste is still being disposal into lakes mud, causing some environmental problems. So, search for its application has gained interest. Studies reported in literature point out that one most promising applic...

In this work, hydrochloric acid is used to remove iron impurities in the bauxite ore contained in the diasporite mineral located in the Sari region. The bauxite ore was calcined at different temperatures and times, and then dissolved in a hydrochloric acid solution. After determining the optimum calcination conditions in 1 h at 900 °C, the response surface methodology (RSM) with four factors in...