Results 81 to 90 of about 9,725 (229)
Microbial ecology of Thiobacillus ferrooxidans [PDF]
, 1990 FINAL TECHNICAL REPORT TO U.S. DEPARTMENT OF THE INTERIOR Geological Survey Washington. D.C.The contents of this report were developed in part under a grant from the Department of the Interior, U.S. Geological Survey.
Braddock, Joan F. +5 more
core
Cements based on kaolinite waste [PDF]
, 2018 The cement industry involves high-energy consumption that generates high CO2 emissions into the atmosphere. Environmental concerns can be addressed by replacing parts of Portland cement clinkers with pozzolanic materials in mortars and concrete.
Fernández Carrasco, Lucía +5 more
core +8 more sources
ChemElectroChem, Volume 13, Issue 1, January 2026.This review outlines the recycling of spent cathode carbon from aluminum electrolysis. Detoxification strategies, including molten salt roasting and ultrasonic‐assisted leaching, are depicted as effective approaches for removing hazardous components. The recovered carbon is further directed toward resource utilization, such as in lithium‐ and carbon ...
Narasimharao Kitchamsetti +3 more
wiley +1 more source
Chemical speciation and risk assessment of cadmium in soils around atypical coal mining area of China [PDF]
, 2018 The distribution characteristics of Cadmium (Cd) fractions in soils around a coal mining area of Huaibei coalfield were investigated, with the aim to assess its ecological risk. The total Cd concentrations in soils ranged from 0.05 to 0.87 mg/kg.
Cheng, SW(Cheng, SIiwei) +3 more
core +1 more source
Energy Science &Engineering, Volume 14, Issue 1, Page 412-427, January 2026.Using the pillarless mining face at Zhaozhuang Coal Mine as a case study, the research objective is to accurately and comprehensively understand the stress distribution and its evolution characteristics in flexible concrete pillars along the hollow support pillars under the influence of secondary mining movements during pillarless coal mining ...
Yanhui Zhu +4 more
wiley +1 more source
Recovering the lost gold of the developing world : bibliographic database [PDF]
, 1999 This report contains a library of 181 references, including abstracts, prepared for Project R 7120 "Recovering the lost gold of the developing world" funded by the UK' s Department for International Development (DFID) under the Knowledge and Research (
Evans, E.J., Mitchell, C.J.
core
Mullite production by valorization of a hydrodesulphurization catalyst waste
Journal of the American Ceramic Society, Volume 109, Issue 1, January 2026.Due to its high alumina and silica content, Ni–Mo catalyst waste is a suitable, amorphous raw material for producing aluminosilicate phases. Thermal treatment of the waste at 1200°C for 30 min yields a material containing 50 wt.% mullite and exhibiting 96% overall crystallinity. The addition of amorphous silica significantly enhances mullite formation:
Rafael Carrizosa +4 more
wiley +1 more source
Advances in Civil Engineering, Volume 2026, Issue 1, 2026.To address the challenges of surrounding rock control caused by complex stress sources and intense ground pressure in gob‐side entry driving (GED) with narrow coal pillars under extra‐thick coal seams, this study takes the 10 m‐thick coal seam 8204 panel of Tashan Coal Mine as the engineering background.
Dongjie Jiang +6 more
wiley +1 more source
Research on coal gangue recognition method based on infrared thermal imaging
Gong-kuang zidonghuaCoal and gangue sorting methods based on heavy-medium coal selection technology, jigging technology, flotation technology, dry coal selection technology and γ-ray detection method have high investment costs, low sorting efficiency and serious ...
CHENG Gang +3 more
doaj +1 more source
The Geologic Features of the Occurrence of Copper in North America [PDF]
, 1933 Copper is of such widespread natural occurrence in North America and there are so few metal-mining districts that have not contributed to its production that it is obviously necessary in any brief general treatment of the geology of the copper deposits ...
Ransome, F. L.
core