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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.
Wiki User
∙ 11y ago
Wiki User
∙ 14y agoThe "grade" of the ore basically tells you how much of a mineral is in it. So - for example - high grade Aluminium ore would have a high concentration of Bauxite...and thusly a high concentration of Aluminium.
As for what percentages constitutes a low or high grade...I don't know. It likely varies depending on the metal in question.
Wiki User
∙ 14y agoHigh-grade ores contain relatively large amounts of particular minerals; low-grade ores contain lesser amounts.
Wiki User
∙ 9y agoThey are less desirable because there are more impurities in low grade ore.
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What are general ways of extracting metals from its ore?
1. High Temperatures 2. Solutions3. Electricity
What is the definition of refining an ore?
To refine an ore means to extract the valuable metal that is inside the ore.
What is Bauxite the principal ore of?
Bauxite is the principal ore of aluminium.
How did iron extract from the ground?
Smelting: Mined out of the ground, raw ore is a mixture of materials called ore proper and loose earth called gangue (waste). The ore proper is separated by crushing the raw ore are simply washing away the lighter soil. Breaking down the ore from its impurities is more difficult.
Do you have to pass the sixth grade science TAKS to go to 7th grade?
No, not at the 6th grade level. The TAKS (Texas Assessment of Knowledge and Skills) is designed to measure the extent to which a student has learned and is able to apply the defined knowledge and skills at each tested grade level. You will need to either pass the TAKS or the STAAR tests in order to graduate from high school in Texas.
How do you tell high grade gold ore from low grade gold ore by visual inspection?
cannot be done, requires an assay.
What are the commodity under e sugam?
karnataka e sugama is there for electro rods, iron ore products like High grade calibrated iron ore lumps and high grade iron ore fines...
How much does iron ore cost?
1kg of iron ore is about £40 or $20. It depends on the grade of the ore, high or low.
Why would an increase in bioleaching not happen?
If large new deposits of high-grade ore are discovered.
Can you recycle bronze?
Any metal can be recycled. At worst, it can be considered an extremely high grade ore.
What is the difference between a copper rich ore and a low grade 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
When was the carajas project started?
It is there because in 1967, large deposits of high grade iron-ore were found.
What minerals are in Libya?
Algeria has high-grade iron ore, phosphate, mercury, lead, and zinc.
Why is ore processed?
Ore is processed because it is needed for metal and other things. I learned it in grade 4!
What is low grade copper ore and what are the problems associated with it?
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.
What happened at Ungava bay?
In 1980, mining was discontinued at Ungava Bay. Although the iron ore mined there was of a high grade, cheap transportation was not possible.
What is the Definition of recoverable grade of ore?
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.
