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Role Of Innovative Flowsheet Development For Recycling Industries
By V. I. Lakshmanan
Wastes when produced can be reused or recycled prior to disposal. Industries that cause environmental concerns during manufacturing include primary materials and primary metals. Pollution prevention m
Jan 1, 1996
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Removal of Heavy Metals and Upgrading Crude Bio-Oil From Pteris Vittata Stems and Leaves Harvest Using Hydrothermal Upgrading Process
By Yang Jian-guang, Deng Zi-xiang, Zhang Xu-liang, Li Jun-yuan
"Hyperaccumulator biomass harvested after heavy-metal phytoremediation must be considered as hazardous waste that should be contained or treated appropriately before disposal or reuse. As a potential
Jan 1, 2014
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Sulfoxides and Its Complexes with Precious Metals
By Zhang Yongzhu
Sulfoxides are one kind of extractants for precious metals. The structure, the coordination reaction, the extraction behaviour and the precious metals complexes of sulfoxides are summarized. The diffe
Jan 1, 1992
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Reduction of MnO-FeO-SiO2 Slags by Carbon-Saturated Liquid Iron
By José R. de Tenorio
The aim of the present work was to investigate the reduction process of MnO~FeO-Si02 slags by carbon-saturated liquid iron. The effect of the initial Mn content in the bath was explored. The initial M
Jan 1, 1996
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The Value of Incremental Performance Improvement in Concentrators—How to Secure and Quantify Small Gains
By O. Norman Lotter
There are many scales of innovation in the pursuit of concentrator performance improvement, including paradigm change, inventive change and incremental change. All are important, but the last is low r
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Hydrometallurgical Routes for Recycling of Used Alkaline Batteries
By Cleusa Cristina Bueno Martha de Souza
Nowadays in Brazil the final disposal for spent batteries include sanitary and industrial landfill for hazardous waste from domestic waste and industrial waste respectively. The problems of environmen
Jan 1, 2000
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Development Of Visual Evaluation And Numerical Analysis System Of Blast Furnace
By Shinroku Matsuzaki
Data the measurement sensor installed with spatial distribution on the blast furnace were successively accumulated online from the process computer to the database system over a long period. This is a
Jan 1, 2006
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Hw Process Technologies, Inc's Engineered Membrane Separation (EMS) ,Of Copper And Gold In Cyanide Solutions
HW Process Technologies, Inc. (HWPT) has developed a patented membrane-based ion fractionation system, which specifically separates copper from gold and silver species in a cyanide matrix. This Engine
Jan 1, 1998
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Use Of Solid Hematite To Fix Arsenic Contained In A Gas Phase
By A. González
Arsenic is one of the main contaminants present in Chilean copper concentrates and its abatement represents a challenge for the process metallurgy, particularly under the strong environmental requirem
Jan 1, 2003
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Ore Microscopy of Uranium Minerals
By Richard D. Hagni
Although the economically important uranium minerals are difficult to recognize under the ore microscope, they can be identified by a combination of qualitative and quantitative techniques. Useful qua
Jan 1, 1981
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A Dynamic LCA Model For Assessing The Impact Of Lead Free Solder
By E. V. Verhoej
The proposed EU directive on the restriction of the use of certain hazardous substances in electrical and electronic equipment promotes the substitution of lead in consumer electronics to reduce emiss
Jan 1, 2003
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Thennal Plasma Treatment Of Metal And Material Wastes (Keynote)
By Patrick R. Taylor
In the search for the development of more "environmentally friendly" and more intensive waste disposal approaches to meet more and more stringent environmental regulations, thermal plasma-based proces
Jan 1, 2003
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The Application of Acid Pressure Oxidation to the McLaughlin Refractory Ore
By John R. Turney
The success of the Mclaughlin acid pressure oxidatiun process has proved that a complex hydrometallurgical process can be an economically viable means of treating refractory gold ores. Homestake'
Jan 1, 1989
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Characterization of Tensile Properties of Piassava Fiber Reinforced Polyester Composites
By Alice Barreto Bevitori, Felipe Perissé Duarte Lopes, Denise Cristina Oliveira Nascimento, Sergio Neves Monteiro, Isabela Leão Amaral da Silva
"The piassava fiber is one of the most rigid natural lignocellulosic fibers, which has since the last decade been investigated as possible reinforcement for polymeric composites. In the present work,
Jan 1, 2011
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Impurity Capacities In Metallurgical Slags (151fa253-a9f0-408e-bd25-b18674ab2d48)
By Ramana G. Reddy
Thermodynamic modeling and experimental study on impurity capacities and their distribution between mattes or metal and slags in smelting, converting and refining of non-ferrous metals was discussed.
Jan 1, 2003
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Novel Use Of Geochemical Models In Evaluating Treatment Trains For Aqueous Radioactive Waste Streams
By Richard J. Abitz
Thennodynamic geochemical models have been applied to assess the relative effectiveness of a variety of reagents added to aqueous waste streams for the removal of radioactive elements. Two aqueous was
Jan 1, 1996
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Interaction of Metals and Protons with Algae. Equilibrium Constants and Ionic Mechanisms for Heavy Metal Removal as Sulfides and Hydroxides
By R. H. Crist
Reactive components of algal cell walls include uronic and alginic acids: In addition, many marine species have half ester sulfate groups which function as fixed anions. Associated metals vary with th
Jan 1, 1991
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Thermodynamic and Experimental Study on the Steam Reforming Processes of Bio-oil Compounds for Hydrogen Production
By Kun Wang, Xinhui Li, Huaqing Xie, Qingbo Yu, Qin Qin
"Three typical model compounds of bio-oil (ethanol, acetone and phenol) were studied in the steam reforming process for hydrogen production. In the thermodynamic analysis, the three componds showed th
Jan 1, 2014
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In-Situ FT-IR/IRS and MLRS Examination of Adsorbed Oleate at Fluorite and Calcite Surfaces
By C. A. Young, J. D. Miller
Adsorption isotherms previously determined by in-situ Fourier transform infrared/internal reflection spectroscopy (FT-IR/IRS) for oleate adsorption at calcite and fluorite surfaces near pH 9 and at va
Jan 1, 1999
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The Role Of Oxygen Potential Md Use Op Tonnage Oxygen In Copper Smelting
By J. G. Eacott
This paper reviews the role of oxygen potential and the advances that have been made in the application of tonnage oxygen in copper smelting. Brief reference is made to reaction kinetics before atten
Jan 1, 1983