CFD Analysis of Performance of Hydrocyclone for SMS Ore Separation on Seafloor

2017 ◽  
Author(s):  
Tetsuo Yamazaki ◽  
Yosuke Takeda ◽  
Rei Arai ◽  
Naoki Nakatani
Keyword(s):  
Massive Sulfide ◽  
Economic Problem ◽  
Scale Model ◽  
Small Scale ◽  
Cfd Analysis ◽  
Exclusive Economic Zones ◽  
Economic Zones ◽  
Seafloor Massive Sulfide ◽  
Analysis Of Performance ◽  
Small Scale Model

These days, many seafloor massive sulfide (SMS) deposits have been discovered in Japan’s exclusive economic zones. They have many kinds of useful metals, and are expected to be future metal resources. However, SMS mining faces an economic problem for the reason that disposal of unnecessary parts of SMS ores is very expensive in Japan. Adding a function of primary ore separation on seafloor is necessary for economical SMS mining. Some small scale model experiments were conducted by the authors. In this study, CFD analysis is applied for the results of the model hydrocyclone. From the analysis, the fundamental flow condition good for the ore separation in the cyclone is recognized.

Waste Rejection on Seafloor by Hydrocyclone for Economic Seafloor Massive Sulfide Mining

2016 ◽  
Author(s):  
Yosuke Takeda ◽  
Tetsuo Yamazaki ◽  
Rei Arai ◽  
Naoki Nakatani
Keyword(s):  
Specific Gravity ◽  
Separation Efficiency ◽  
Massive Sulfide ◽  
Exclusive Economic Zones ◽  
Waste Separation ◽  
Economic Zones ◽  
Sea Area ◽  
Seafloor Massive Sulfide ◽  
High Possibility ◽  
Disposal Cost

Many seafloor massive sulfide (SMS) deposits have been discovered in Japan’s exclusive economic zones (EEZ). They have some useful metals and are expected to become future metal resources. In Japan, because of an expensive waste disposal cost, it seems to be difficult to realize the SMS mining. Adding a function of primary waste separation from metal-rich parts of SMS ore on seafloor by a hyrocyclone is proposed to overcome the problem. The water flow structure in a model hydrocyclone is observed in the study at first. Secondly, the performance of separation using differences in specific gravities of particles by the hydrocyclone is experimentally examined. Finally, the application of hydrocyclone in the actual sea area is examined. The result shows that 67% of larger specific gravity are collected and 67% of smaller one are rejected. From the separation efficiency, the hydrocyclone method is recognized to have a high possibility of application in the actual sea area.

Wave Energy Hyperbaric Device for Electricity Production

2007 ◽  
Author(s):  
Segen F. Estefen ◽  
Paulo Roberto da Costa ◽  
Eliab Ricarte ◽  
Marcelo M. Pinheiro
Keyword(s):  
Power Generation ◽  
Wave Energy ◽  
Experimental Results ◽  
Electricity Production ◽  
Scale Model ◽  
Small Scale ◽  
Regular Waves ◽  
Hyperbaric Chamber ◽  
Small Scale Model

Wave energy is a renewable and non-polluting source and its use is being studied in different countries. The paper presents an overview on the harnessing of energy from waves and the activities associated with setting up a plant for extracting energy from waves in Port of Pecem, on the coast of Ceara State, Brazil. The technology employed is based on storing water under pressure in a hyperbaric chamber, from which a controlled jet of water drives a standard turbine. The wave resource at the proposed location is presented in terms of statistics data obtained from previous monitoring. The device components are described and small scale model tested under regular waves representatives of the installation region. Based on the experimental results values of prescribed pressures are identified in order to optimize the power generation.

Staged-Air Ratio Optimization for a New Down-Fired Technology within a Cold Small-Scale Model of a 350 MWeUtility Boiler

2011 ◽  
Vol 25 (4) ◽  
pp. 1485-1496 ◽  
Author(s):  
Min Kuang ◽  
Zhengqi Li ◽  
Pengfei Yang ◽  
Jinzhao Jia ◽  
Qunyi Zhu
Keyword(s):  
Scale Model ◽  
Small Scale ◽  
Ratio Optimization ◽  
Small Scale Model

scholarly journals Monitoring deformation of small scale model tunnels under load testing

Survey Review ◽  
2014 ◽  
Vol 46 (339) ◽  
pp. 417-425 ◽  
Author(s):  
H-M. Chen ◽  
M. Smith ◽  
H-S. Yu ◽  
N. Kokkas
Keyword(s):  
Scale Model ◽  
Small Scale ◽  
Load Testing ◽  
Small Scale Model

A small-scale model of factor VIII and factor IX fractionation from plasma

1989 ◽  
Vol 10 (4) ◽  
pp. 279-286 ◽  
Author(s):  
Peter Feldman ◽  
Lowell Winkelman ◽  
Helen Evans ◽  
Martin Pinnell ◽  
Fiona Murdoch ◽  
...  
Keyword(s):  
Factor Viii ◽  
Factor Ix ◽  
Scale Model ◽  
Small Scale ◽  
Small Scale Model

A Small Scale Model for Seismic Imaging Systems

1972 ◽  
pp. 195-213 ◽  
Author(s):  
M. G. Maginness ◽  
G. B. Cook ◽  
L. G. Higgens
Keyword(s):  
Seismic Imaging ◽  
Imaging Systems ◽  
Scale Model ◽  
Small Scale ◽  
Small Scale Model
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