The true mill-head grade of an ore-stream in percent, ounces, or parts per million of a metal or mineral, less extractive metallurgical losses; the proportion of an ore material actually recovered.
The metal (copper) extracted may be generally brittle and break easily.
If large new deposits of high-grade ore are discovered.
Any metal can be recycled. At worst, it can be considered an extremely high grade ore.
I'm pretty sure that the answer will be a daimond because they are useful and can be sold also gold to but the one that is mainly mineral is a daimond.
acceleration is a change in velocity (speed + direction)
Ores are a non-renewable natural resources, therefore a resources of a particular ore refers to the total amount present on the earth, as for reserves this is the known deposits which are recoverable under current technogical and economic climate.
To refine an ore means to extract the valuable metal that is inside the ore.
cannot be done, requires an assay.
1kg of iron ore is about £40 or $20. It depends on the grade of the ore, high or low.
It's an ore that doesn't contain a very high proportion of valuable minerals. The term could also be applied to richer ores containing large amounts of undesirable impurities, arsenic for example. Low-grade ores are less valuable than higher-grade ones. Also, recovery rates for low grade ores tend to be lower than for high grade ores - that is, a lower percentage of the total amount of metal in the ore is extracted successfully. The definition of low-grade depends on the resource in question. For copper, low grade ores have less than 1% copper. For gold, an ore having 1% gold by mass would be considered (very) high-grade, as gold is more valuable than copper.
karnataka e sugama is there for electro rods, iron ore products like High grade calibrated iron ore lumps and high grade iron ore fines...
Ore is a mineral that can be refined into some useful substance, which is usually a metal. Iron ore is the rock from which iron is refined.
Ore is processed because it is needed for metal and other things. I learned it in grade 4!
Low-grade copper ore contains a small amount of copper (1% or lower) and a big amount of waste rock. The problem with low-grade copper is that it breaks down and melts more easily than copper ore.
It is very hard and very expensive to remove the copper from that ore.
Copper rich ores contain Relatively large amount of copper. Copper obtained from rich ores is from better quality than low-grade ores. A low-grade ore doesn't contain very high proportion of valuable copper
refining