The existing pyrometallurgical technology is quite suitable for processing high-grade ore,and the process flow is shorter relatively,but the energy consumption is higher.
The sintering materials are divided into three types of high quality, mid quality, low quality , and for the different-quality materials the state optimal values are decided respectively, by using fuzzy expert optimization rules.
In order to find out the best ration of Brazil CVRD and Indina ores,to gnide the production and improve the quality of sintering,according to different importing ores ratio,the lab study was carried' out.
It allowed lateral flow of hydrothermal solutions, which deposited further generations of sulfides and increased the base metal content producing a high grade ore.
These two types of adularia commonly occur within crustiform and colloform bands in association with high grade ore, and chalcedony or fine-grained quartz which often displays various recrystallisation textures.
Substantial amounts of low-grade phosphorites are found along with high grade ore in some areas of Hazara (Pakistan).
A significant gold find occurred in 1926 when high grade ore was struck.
Generally, CIP or CIL methods are used for high grade ore.
As follows from a low δ18Oav = -3.5‰ of mushketovite (magnetite pseudomorphs after hematite) in high-grade ore, this mineral was formed as a product of hematite reduction by organic matter.
The presence of high amounts of low- and intermediate-grade phosphate ore and the need for high-grade ore for industry necessitates the availability of economic and efficient upgrading techniques.
Sulphur isotopic compositions of sulphides within garnet-rich rocks and high-grade ore from the Broken Hill deposit, New South Wales, Australia, have been determined and show a range of values of -3.3 to +6.7 per mil.
Sulfide-carbonate reactions probably maintained a high permeability in the ore zone over an extended period of time eventually producing a high-grade ore from solutions rich in Fe and Mn but poor in Zn and Pb.
Low-grade iron ore, defined as containing between 20 and 47% iron, is thought to be the primary iron-bearing lithology from which most high-grade ore deposits formed, through different processes of enrichment.
A deep-sea manganese nodule contains a great deal of metallic elements,if exploited properly,it'll be a valuable substitute resource for land metallic ore.The major processing technologies are introduced,whose development has been going on both at home and abroad in the past half century.The existing pyrometallurgical technology is quite suitable for processing high-grade ore,and the process flow is shorter relatively,but the energy consumption is higher.While the hydrometallurgical technology is quite suitable...
A deep-sea manganese nodule contains a great deal of metallic elements,if exploited properly,it'll be a valuable substitute resource for land metallic ore.The major processing technologies are introduced,whose development has been going on both at home and abroad in the past half century.The existing pyrometallurgical technology is quite suitable for processing high-grade ore,and the process flow is shorter relatively,but the energy consumption is higher.While the hydrometallurgical technology is quite suitable for processing low-grade and complicated ore,and the energy consumption is lower,but the process flow is longer relatively.The combined technology of the pyrometallurgy and hydrometallurgy is suitable for ores with different content and different types,but the process flow is still longer and the energy consumption is higher.In recent years,many researchers have made helpful attempts on hydrometallurgical reductive leaching,and they open up a new way of thinking.They will in the future pay much more attention to comprehensive utilization and environmental requirements,as well as carry out in-situ processing,etc.
高品位矿
high-grade ore
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