write a note on ore class 10
Answers
Answer:
Ores are the substances from which minerals are extracted on a high scale with less expenditure
Answer:
SHORT NOTE
Ores that are mined from earth are usually contaminated with impurities such as soil and sand etc. Dressing means, simply getting rid of as much of the unwanted rocky material as possible before the ore is converted into the metal. Physical methods are used to enrich the ore
Explanation:
LONG NOTE
Ore is natural rock or sediment that contains one or more valuable minerals, typically metals, that can be mined, treated and sold at a profit. Ore is extracted from the earth through mining and treated or refined, often via smelting, to extract the valuable metals or minerals.[1]
The grade of ore refers to the concentration of the desired material it contains. The value of the metals or minerals an ore contains must be weighed against the cost of extraction to determine whether it is of sufficiently high grade to be worth mining.[1]
Metal ores are generally oxides, sulfides, silicates, native metals such as copper, or noble metals such as gold. Ores must be processed to extract the elements of interest from the waste rock. Ore bodies are formed by a variety of geological processes generally referred to as ore genesis.