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General iron ore hardness
Release time:
2025-03-14
The hardness of an ore is often used to measure its ability to resist external erosion or scratches. Depending on the hardness, ores can be divided into the following categories:
Generally, the hardness range of iron ore is between 1-7, depending on the type of iron ore. Here are the hardness ranges of several common iron ore:
Magnetite: The hardness is about 5.5-6.5, and the main component is iron tetroxide (Fe₃O₄), which has strong magnetic properties
Hematite: The hardness is about 5-6, the chemical formula is Fe₂O₃, and the appearance varies from red to light gray
Limonite: Hardness is about 1-5, the chemical formula is mFe₂O₃·nH₂O, iron oxide with crystallization water
sidertite: The hardness is about 3-4, and the chemical formula is FeCO₃, which is a kind of iron carbonate
Hardness classification standards
The hardness of an ore is often used to measure its ability to resist external erosion or scratches. Depending on the hardness, ores can be divided into the following categories:
High hardness ore (hardness greater than 5.5): such as magnetite and hematite.
Medium hardness ore (hardness between 2.5 and 5.5): such as natural gold, chalcopyrite, etc.
Low hardness ore (hardness less than 2.5): such as natural gold, chalcopyrite, etc.
Latest News
Summary: The color of iron ore is mainly affected by its chemical composition and structure. Common colors include black, red, brown and gray, etc. The color of stripes also varies according to the ore type. If you need to know more about the color characteristics of a specific iron ore, you can search for specific ore types such as hematite or limonite.
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What are the companion ores of iron ore?
Summary: The types of associated ores of iron ore are diverse, including manganese ore, vanadium ore, phosphate ore and other metal minerals. These associated ores have an important impact on the smelting and utilization value of iron ore, and need to select appropriate processes and technologies for comprehensive recycling and utilization according to actual conditions.
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The gangue components in iron ore are mainly
The ganglite component in iron ore is mainly silica (SiO2). Gangli is a mineral component in iron ore other than the main iron ore, usually including quartz and silicates. The content of gangue components has an important impact on the processing and treatment of iron ore. For example, the higher the silica content, the greater the slag output, resulting in an increase in the coke ratio and the more coke consumed in the production of molten iron.
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What is the approximately iron content in iron ore
Iron ore is mainly used in steel production and is an important raw material for the steel industry. It takes about 1.6 tons of iron ore to produce one ton of pig iron. According to different physical forms, iron ore is divided into raw ore, block ore, powder ore, concentrate ore and sintered ore. The ratio of sintered ore, pellet ore and block ore is approximately 70:15:15 in the iron ore that is finally smelted ore for blast furnaces.
2025-03-14
Summary: The formation of iron ore is the result of a multi-stage and multi-factor joint action, involving multiple geological processes such as source of original substances, weathering and oxidation, sedimentation and enrichment, crustal movement and metamorphism, and magma activities. These processes together shape the physical and chemical properties of iron ore and also determine the distribution pattern of global iron ore resources.
2025-03-14
The processing process of iron ore usually includes crushing, grinding, magnetic separation, flotation, reselection and other procedures, and finally selecting iron ore. These processing steps ensure effective utilization of iron ore and increase its economic value.
2025-03-14
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