scholarly journals New technology for low-grade hardwood utilization: System 6

1982 ◽  
Author(s):  
Hugh W. Reynolds ◽  
Charles J. Gatchell
Keyword(s):  
New Technology ◽  
Low Grade

Application of Laser Induced Luminescence in Ecology

1993 ◽  
Vol 27 (7-8) ◽  
pp. 547-556 ◽  
Author(s):  
M. Gaft
Keyword(s):  
New Technology ◽  
Ore Deposits ◽  
Ecological Effects ◽  
Low Grade ◽  
Ecological Damage

Exhaustion of rich ore deposits is making it necessary to bring low-grade ores into production, resulting in a sharply increased volume of excavated rock. Huge quantities of waste fill vast areas of the Earth's surface, with severe ecological effects. But the ecological damage could be reduced by extracting additional products from the tailings. Laseroluminescent sorting is a new technology by which this may be achieved. The most promising subjects are about 50 minerals including diamonds, native Au and Ag, ores of V, Pb, Zn, Sn, Li, Be, W, Mo, Zr, Sr, halite, apatite, phosphorite, fluorite, calcite, barite, anhydrite.

scholarly journals Hydrogels Containing the Ferri/Ferrocyanide Redox Couple and Ionic Liquids for Thermocells

2019 ◽  
Vol 72 (2) ◽  
pp. 112 ◽  
Author(s):  
Matthew Russo ◽  
Holly Warren ◽  
Geoffrey M. Spinks ◽  
Douglas R. MacFarlane ◽  
Jennifer M. Pringle
Keyword(s):  
Mechanical Properties ◽  
Ionic Liquids ◽  
Solid State ◽  
Waste Heat ◽  
New Technology ◽  
Redox Couple ◽  
Low Grade ◽  
Aqueous Electrolytes ◽  
Hydrogel Network ◽  
Water Based

Thermoelectrochemical cells are a promising new technology for harvesting low-grade waste heat. The operation of these cells relies on a redox couple within an electrolyte, which is most commonly water-based, and improvement of these materials is a key aspect of the advancement of this technology. Here, we report the gelation of aqueous electrolytes containing the K3Fe(CN)6/K4Fe(CN)6 redox couple using a range of different polymers, including polyvinyl alcohol (PVA), sodium carboxymethyl cellulose (Cmc), polyacrylamide (PAAm), and two commercial polyurethane-based polymers: HydroMed D640 and HydroSlip C. These polymers produce quasi-solid-state electrolytes with sufficient mechanical properties to prevent leakage, and allow improved device flexibility and safety. Furthermore, the incorporation of various ionic liquids within the optimized hydrogel network is investigated as a route to enhance the electrochemical and mechanical properties and thermal energy harvesting performance of the hydrogels.

Steady-State Simulation of Hybrid Nickel Leaching Circuit Using Syscad

2006 ◽  
Vol 1 (1) ◽  
Author(s):  
Abbas Razavimanesh ◽  
Moses Tade ◽  
John Rumball ◽  
Vishnu Pareek
Keyword(s):  
New Technology ◽  
Nickel Content ◽  
Acid Leaching ◽  
Process Variable ◽  
Low Grade ◽  
Business Decisions ◽  
Hydrometallurgical Processing ◽  
Process Chemistry ◽  
Steady State Simulation ◽  
Nickel Leaching

There is an increasing focus on the hydrometallurgical processing of nickel-rich laterite ore due to declining global reserves of nickel sulphides. The development of new technology called hybrid nickel leaching circuit that encompasses pressure acid leaching (PAL) and atmospheric leaching (AL) processes has made processing of low-grade ores (with nickel content as low as 0.5%) a possibility. However, significant challenges exist in lowering the operating costs for this new process including the reduction of sulphuric acid and the energy required to heat the pulp to the desired temperature (250oC). To address above challenges, a detailed understanding of the process chemistry together with interactions between unit operations feeding into and out of the system is required. To accomplish this, a software package with powerful convergence algorithms, control loops, background chemical equilibrium, aqueous thermodynamics and extensive databases containing information on the physical properties of desired components is needed. Using such a process simulator, it is possible to produce numerically rigorous mass/energy balances for as many variations of the model as desired. This allows enhanced analysis of the flowsheet, better process design, and ultimately, better business decisions. Although there have been several studies on hybrid circuit, most of these studies have only dealt with the effects of process variable such as temperature, acidity, pulp density. Thus far, no complete study has been published on the modelling of different proposed scenarios. The present work constitutes an effort towards bridging this gap. A number of possible flowsheeting combinations were simulated using a commercial software packages SysCAD, and some optimal configurations were identified.

Application of AHP on the System of Flue Gas Desulfurization and Denitration with Pyrolusite Slurry

2011 ◽  
Vol 383-390 ◽  
pp. 6404-6408
Author(s):  
Chao Long Wang ◽  
Wei Yi Sun ◽  
Le Luo ◽  
Shi Jun Su
Keyword(s):  
Flue Gas ◽  
Social Economic ◽  
New Technology ◽  
Flue Gas Desulfurization ◽  
Low Grade ◽  
Economic Resource ◽  
Whole Process ◽  
Electrolytic Manganese ◽  
New Process ◽  
Resource And Environment

Method of using high-sulfur coal and Low-grade pyrolusite to produce manganese is a new process. This article takes advantages of AHP and proposes a new way to research this system. This paper also builds a model of this system in order to compare with the traditional one. It could make readers understand its advantages easily. Meanwhile, this paper use three-scale method to determine the proportion. It could reduce the factor of human speculation in the whole process. So it lays a good foundation to make a reasonable decision. Use AHP to determine the three-scale weight of each index and analysis the pact of this system in respect of social-economic, resource and environment. Finally, it is confirmed that the new technology is superior to the traditional process of producing electrolytic manganese.

scholarly journals Non-Destructive Assessment of Chicken Egg Fertility

Sensors ◽  
2020 ◽  
Vol 20 (19) ◽  
pp. 5546
Author(s):  
Adeyemi O. Adegbenjo ◽  
Li Liu ◽  
Michael O. Ngadi
Keyword(s):  
Hyperspectral Imaging ◽  
Egg Production ◽  
New Technology ◽  
Identification Problem ◽  
Economic Losses ◽  
Low Grade ◽  
Chicken Egg ◽  
Food Stock ◽  
Non Destructive ◽  
Egg Fertility

Total hatching egg set (for both egg production chicks and broilers) in the Agriculture and Agri-Food Canada report 2017 was over 1.0 billion. With the fertility rate for this year observed to be around 82%, there were about 180 million unhatched eggs (worth over 300 million Canadian dollars) incubated in Canada for the year 2017 alone. These non-hatching (non-fertile) eggs can find useful applications as commercial table eggs or low-grade food stock if they can be detected early and isolated accordingly preferably prior to incubation. The conventional method of chicken egg fertility assessment termed candling, is subjective, cumbersome, slow, and eventually inefficient, leading to huge economic losses. Hence, there is a need for a non-destructive, fast and online prediction technology to assist with early chicken egg fertility identification problem. This paper reviewed existing non-destructive approaches including ultrasound and dielectric measurements, thermal imaging, machine vision, spectroscopy, and hyperspectral imaging. Hyperspectral imaging was extensively discussed, being an emerging new technology with great potential. Suggestions were finally proffered towards building futuristic robust model(s) for early detection of chicken egg fertility.

scholarly journals Nucleic Acids Aptamer Application in Diagnosis and Therapy of Cancer Based on Cell-SELEX Technology

2021 ◽  
pp. 594-636
Author(s):  
Elena Locci ◽  
Silvia Raymond
Keyword(s):  
Nucleic Acids ◽  
Tumor Cells ◽  
New Technology ◽  
Low Grade ◽  
Accurate Analysis ◽  
Close Supervision ◽  
Treatment Plans ◽  
Keywords Cancer ◽  
Changes Over Time ◽  
Over Time

The "labeling" of nucleic acids (cell genetic information such as RNA or DNA) is not a new technology for monitoring them. However, current capabilities do not provide a complete picture of how tumor cells develop. What this platform, known as Clon Mapper, can do that was not possible before, is to go back in time and track how tumor cells change over time. This gives researchers the ability to see which cells "win" over fewer resistant cells, continue to clone themselves, and make the tumor more dangerous. By isolating these cells, researchers can better test which therapies work against them. Monitoring changes over time is the key to successful transmission therapies. Tumor cells adapt and become resistant to therapies, which is why patients can recover but experience a relapse later. This is one of the reasons why cancer treatment is so challenging; we do not have very good methods for early detection of cells sensitive to a drug and measuring their resistance. This resistance is the main cause of treatment failure in many cancer patients. CLL is a low-grade B cancer that is often monitored for months or even years before active treatment is needed. This treatment depends a lot on the patient's close supervision. In this study, Clon Mapper focuses on identifying cells that mimic themselves, the speed at which this process takes place, and its effect on the growth rate of surrounding cells over time. This allows for a more accurate analysis of the cell population and may lead to more customized treatment plans for patients. Keywords: Cancer; Cells; Tissues; Tumors; Prevention; Prognosis; Diagnosis; Imaging; Screening; Treatment; Management

A new technology for production of high purity paratungstate ammonium from low grade tungsten concentrate

1996 ◽  
Vol 3 (2) ◽  
pp. 171-176 ◽  
Author(s):  
Peimei Sun ◽  
Zhouxi Chen ◽  
Honggui Li ◽  
Yunjiao Li ◽  
Maosheng Liu ◽  
...  
Keyword(s):  
High Purity ◽  
New Technology ◽  
Low Grade

scholarly journals New mega-sized wet high intensity magnetic separator: a cost-effective solution to reclaim iron ore fines from tailing dams

2013 ◽  
Vol 66 (4) ◽  
pp. 529-533 ◽  
Author(s):  
José Pancrácio Ribeiro ◽  
Claudio Henrique T. Ribeiro
Keyword(s):  
High Intensity ◽  
Iron Ore ◽  
New Technology ◽  
Cost Effective ◽  
Low Grade ◽  
Environment Impact ◽  
Magnetic Separator ◽  
Concentration Plant ◽  
Iron Ore Tailing ◽  
Iron Ore Fines

Ten years of continuous research and development have led to a major improvement in the field of iron ore Wet High Intensity Magnetic Separation - WHIMS. With this cutting-edge technology, Gaustec has established a new world record in this class of Magnetic Separators, by providing a sheer feed rate of up to 1400 tph for iron ore fines. Although low-grade iron ore mines will benefit from this new technology, focused on herein is the reclaiming of low-grade iron ore tailing from ponds, having in mind its huge positive environment impact and business opportunity. Based on this newly developed technology, the construction in Brazil of a Concentration Plant started in 2012 for dressing iron ore tailings at 45% Fe grade, at Itaminas Mine. This plant went into operation this year. Based on the good performance of this first unit, the construction of a second Concentration Plant of the same type, to further reduce to 18% Fe in the tailings, is under way, scheduled to be started-up in 2014.

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