Question 1: Which is harder, limestone or iron ore? Iron ore is harder.

Can be divided into Mohs hardness scale.

Mohs hardness, also known as Mohs hardness, is a standard for mineral hardness. It was first proposed by German mineralogist Frederich Mohs in 1812. The measured scratch depth is divided into ten levels to express the hardness: talc (talc) with the smallest hardness is 1, diamond with the highest hardness is 10, and then the hardness is divided into 10 levels:

Talc (talc) 1

Gypsum2,

Calcite3,

Fluorite4,

Apatite (apatite)5,

Orthoclase (feldspar;orthoclase;periclase)6,

Quartz (quartz)7,

Topaz (topaz)8,

Corundum 9,

Diamond 10.

The calcium carbonate mineral is calcite, which is the most common natural calcium carbonate. Mohs hardness: level 3

Iron ore: pyrite, source of sulfuric acid raw material, Mohs hardness level 6.5.

Therefore, iron ore has high hardness.

Question 2: How to classify the hardness of ore? Ore hardness (hardness of rock and ore)

The ability to resist tools from invading the ore surface, and an indicator of the difficulty of crushing the ore material. The internationally accepted method for measuring the hardness of ores is the Mohs standard mineral hardness comparison method; China also uses the Plattsite ore solidity coefficient f (commonly known as the rock ore hardness coefficient) to characterize the ore hardness.

Mohs hardness was proposed by the Austrian F. Mohs in 1824. He used the hardness of ten standard minerals ranging from small to large, such as talc, gypsum, calcite, fluorite, apatite, orthoclase, quartz, topaz, corundum, and diamond, as a scale to identify the hardness of the ore being tested. If the mineral being measured can be scratched by a certain level of standard mineral and leave traces on the surface, but cannot be scratched by a lower level of standard mineral, then the hardness of the ore material will be between these two hardness scales. The hardness of an ore material can also be obtained by the weighted average of the hardness and content of its constituent minerals.

The solidity coefficient f of Plattsite ore was proposed and first adopted by Russian scholar Protodi Yakonov in 1911. It is used to characterize the difficulty of various rock ore crushing and rock mass maintenance operations in mining projects. Platts believes that no matter which method is used for crushing, the solidity of rock ore tends to be consistent. The f value is set between 0 and 20, usually expressed by an integer, only f. Question 3: Iron Ore What is the compression rating of stone? How to calculate the rock hardness grade of ore: 1. React with hydrochloric acid to see how much hydrogen it generates, 2. Calculate the mass of iron through Fe+2HCl=H2+FeCl2, 3. Then divide by the mass of iron ore.

For the calculation of the rock hardness grade of ores, the Platts classification method is generally used.

Question 4: What is the hardness of silicon ore? Quartz---Mo 7 degrees!

Question 5: What kind of ore is this? Hardness 6 should be jade, soft jade

Question 6: What are the English translations of iron ore terminology (lumpiness) and (hardness)

Iron ore terminology (lumpiness) ) and (hardness) English name

Iron ore term (fragmentation) and (hardness) English name

Question 7: What is the hardness of iron ore, copper ore, nickel ore and other ores? How many? Watch it on Baidu