Results 51 to 60 of about 105,325 (306)

Spectroscopic diagnostic for the mineralogy of large dust grains [PDF]

, 2003
We examine the thermal infrared spectra of large dust grains of different chemical composition and mineralogy. Strong resonances in the optical properties result in detectable spectral structure even when the grain is much larger than the wavelength at ...
Artymowicz, Burns, C. Dominik, Dent, Dominik, Dominik, Dorschner, Heinrichsen, Holland, L. B. F. M. Waters, M. Min, Mie, Min, Min, Preibisch, Servoin, Tanaka, Walker   +17 more
core   +3 more sources

Effect of Temperature and Atmosphere on Agglomeration of Bed Particles in a Bubbling Fluidised Bed Burning Na‐Enriched Coal

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Agglomeration of bed materials during circulating fluidised bed (CFB) combustion or gasification of high‐alkali fuel is a practical challenge in industrial practice. This work investigates experimentally the effect of temperatures (700°C–900°C) and atmosphere (air equivalence ratios 1.61–0.53) on agglomeration in a lab‐scale bubbling fluidised
Zipeng Guo, Jianbo Li, Xiaofei Long, Quanhai Wang, Xiaofeng Lu   +4 more
wiley   +1 more source

Technological Mineralogical Analysis and Flotation Test of a Refractory Lead-zinc Ore in Hebei

Kuangchan zonghe liyong
This is an article in the field of mineral processing engineering. The main valuable elements in a lead-zinc mine in Hebei are lead and zinc, with grades of 1.07% and 2.08%, respectively.
Guanglin QIN, Guangsheng LI, Xingfu ZHU, Qiang JI, Congquan YU   +4 more
doaj   +1 more source

Study on Process Mineralogy of a Copper-Nickel Polymetallic Sulfide Ore

Kuangchan zonghe liyong, 2022
In this study, the process mineralogy of a copper-nickel polymetallic sulfide ore was studied. Results show that the main useful minerals in the ore are nickel-pyrite and chalcopyrite.
Weijun Tan, Zeping Feng
doaj   +1 more source

Evaluation of laboratory methodologies for froth flotation of feldspar and kaolin [PDF]

, 1994
This report describes work carried out to establish and evaluate methodologies for the laboratory froth flotation of feldspar and kaolin. One of the main aims was to ascertain the feasibility of separating glass-grade feldspar from granite quarry dust ...
Mitchell, C.J.
core  

Lime stabilisation for earthworks: a UK perspective [PDF]

, 2014
Lime stabilisation is a versatile technique applied during earthworks operations. Modern soil recycling units are much more efficient at pulverising fill material and intermixing the added binder/water than machinery available 20 years ago.
Beetham P, Bell FG, Bergado DT, Bin S, Bohn HL, BSI, BSI, BSI, Davidson LK, Diamond S, Eades JE, Greaves HM, Highways Agency, Highways Agency, Highways Agency, Holt CC, Ingles OG, John Bateman, Longworth I, McAllister LD, Mitchell JK, Neil Dixon, Paul Beetham, Paul Fleming, Perry J, Petry TM, Reeves GM, Robert Hutchison, Rowell DL, Sherwood PT, Sherwood PT, Snedker EA, Stocker PT, Sweeney DA, Taylor HFW, Tom Dijkstra, Van Olphen H, Winter NB   +37 more
core   +2 more sources

Potassium Migration of Chestnut Shell Ashes Under Oxidizing Atmosphere and Its Modification Mechanism by Additives

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Biomass energy plays a critical role in alleviating environmental pressures. However, its relatively high content of alkali metals (especially for potassium) would cause ash‐related issues during combustion. To mitigate these issues, the potassium migration behaviors during chestnut shell (CS) conversion and the modification mechanisms of ...
Meijie Zhou, Weijie Guo, Fenghai Li, Xuefei Liu, Ziqiang Yang, Mingjie Ma, Yitian Fang   +6 more
wiley   +1 more source

The process chemistry and mineralogy of brannerite leaching

Journal of the Southern African Institute of Mining and Metallurgy, 2017
Brannerite (UTi2O6) is the most important uranium mineral after uraninite and coffinite, and the most common refractory uranium mineral. As the more easily leachable uranium ores are becoming exhausted, it is necessary to process the complex and refractory ores in order to meet the growing demand for uranium as an energy source. This typically requires
Gilligan, R., Nikoloski, A.N.
openaire   +2 more sources

A method for detecting the dissemination size of metal minerals under the microscope based on deep learning

地质科技通报
Objective The embedded granularity of target minerals refers to their particle size and distribution in ore, which directly influences the design and effectiveness of ore beneficiation processes.
Huaming TANG, Zengrui LANG, Hongming WANG, Ling WANG, Long WANG, Chong CAO, Yimiao NIE, Shuxian LIU, Xiuli HAN   +8 more
doaj   +1 more source

Temporal tracking of mineralization and transcriptional developments of shell formation during the early life history of pearl oyster Pinctada maxima [PDF]

, 2011
Molluscan larval ontogeny is a highly conserved process comprising three principal developmental stages. A characteristic unique to each of these stages is shell design, termed prodissoconch I, prodissoconch II and dissoconch.
Elizur, Abigail, Gardner, Luke D., Leavesley, David I., Mills, David   +3 more
core   +1 more source