Iron ore is an important raw material for iron and steel production enterprises. The natural ore (iron ore) is gradually separated from iron through crushing, grinding, magnetic separation, flotation, gravity separation and other procedures. It is a mineral aggregate containing iron elements or iron compounds that can be economically utilized. Iron ore is an international bulk commodity and strategic material, belonging to the economic lifeline. The world's iron ore resources are concentrated in Australia, Brazil, Russia, Ukraine, Kazakhstan, India, the United States, Canada, South Africa and other countries. As the world's largest iron ore demand country, China's iron ore reserves are not small, but its grade is unfortunately relatively low. From the perspective of industrial economy, it is better to import from Australia, Brazil and other countries rich in iron ore. Our company mainly imports iron ore from Russia, Ukraine and the Middle East to China.
Block ore is a kind of high-grade ore that can be directly put into the furnace. The powder ore and concentrate can only be put into the blast furnace after artificial block making. Among them, the powder ore is the main raw material for the production of sinter, and the concentrate is the main raw material for the production of pellets. Based on the demand of spot market, the target of iron ore futures trading is powder ore. The general physical particle size of block ore is 10-30mm.
Pelletizing: one of the important methods of powder ore forming.
The raw pellets with uniform viscosity and sufficient strength are made by adding a proper amount of water and binder to the powder. After drying and preheating, they are roasted in an oxidation atmosphere to make the raw pellets agglomerate and then the pellets are made. This method is especially suitable for the treatment of concentrate fines. Pellet has good cold strength, reducibility and particle size composition. In iron and steel industry, pellet and sinter are also important blast furnace burden, which can form a better burden structure together. It is also used in non-ferrous metal smelting.
There are mainly three kinds of roasting equipment for pellet: shaft furnace, belt roaster and grate kiln. Roasting with shaft furnace, the capacity of single machine is small, the heating is uneven, and the adaptability to raw materials is poor; however, the equipment is simple and the operation is convenient. China has made a breakthrough in shaft furnace roasting technology. The belt roaster is mainly DRAVO Lurgi type, which has the advantages of large single machine capacity, waste heat utilization system, simple and reliable equipment, convenient operation, etc.; it is the main equipment for pellet roasting in the world at present, and the pellet produced accounts for more than half of the world's total output. Grate kiln has the advantages of even roasting and large capacity of single machine, but there are many equipment links.
Iron ore powder is a kind of ore powder made of iron ore (ore containing iron elements or iron compounds) by processing, crushing, sorting, grinding, etc. The types of iron ore powder are mainly divided into magnetite powder, hematite powder, limonite powder, silicate powder of siderite iron, and pyrite. Iron ore powder is the main raw material of iron and steel industry.
Magnetite is a kind of ferromagnetic mineral, which is rich in Fe3O4 (formula: Fe3O4, molecular weight: 231.54).
It occurs in metamorphic deposits and endogenetic deposits and becomes hematite or limonite after oxidation, which is the main raw material for iron making.
Magnetite is an oxide mineral widely distributed in nature and rich in reserves. Its main producing areas are: the United States, Mexico, Sweden, Germany, Italy, Austria, Romania, Russia, northeast Siberia, the Middle East, Brazil.
Iron ore is an important raw material for iron and steel production enterprises. The natural ore (iron ore) is gradually separated from iron through crushing, grinding, magnetic separation, flotation, gravity separation and other procedures. It is a mineral aggregate containing iron elements or iron compounds that can be economically utilized. Iron ore is an international bulk commodity and strategic material, belonging to the economic lifeline. The world's iron ore resources are concentrated in Australia, Brazil, Russia, Ukraine, Kazakhstan, India, the United States, Canada, South Africa and other countries. As the world's largest iron ore demand country, China's iron ore reserves are not small, but its grade is unfortunately relatively low. From the perspective of industrial economy, it is better to import from Australia, Brazil and other countries rich in iron ore. Our company mainly imports iron ore from Russia, Ukraine and the Middle East to China.
Block ore is a kind of high-grade ore that can be directly put into the furnace. The powder ore and concentrate can only be put into the blast furnace after artificial block making. Among them, the powder ore is the main raw material for the production of sinter, and the concentrate is the main raw material for the production of pellets. Based on the demand of spot market, the target of iron ore futures trading is powder ore. The general physical particle size of block ore is 10-30mm.
Pelletizing: one of the important methods of powder ore forming.
The raw pellets with uniform viscosity and sufficient strength are made by adding a proper amount of water and binder to the powder. After drying and preheating, they are roasted in an oxidation atmosphere to make the raw pellets agglomerate and then the pellets are made. This method is especially suitable for the treatment of concentrate fines. Pellet has good cold strength, reducibility and particle size composition. In iron and steel industry, pellet and sinter are also important blast furnace burden, which can form a better burden structure together. It is also used in non-ferrous metal smelting.
There are mainly three kinds of roasting equipment for pellet: shaft furnace, belt roaster and grate kiln. Roasting with shaft furnace, the capacity of single machine is small, the heating is uneven, and the adaptability to raw materials is poor; however, the equipment is simple and the operation is convenient. China has made a breakthrough in shaft furnace roasting technology. The belt roaster is mainly DRAVO Lurgi type, which has the advantages of large single machine capacity, waste heat utilization system, simple and reliable equipment, convenient operation, etc.; it is the main equipment for pellet roasting in the world at present, and the pellet produced accounts for more than half of the world's total output. Grate kiln has the advantages of even roasting and large capacity of single machine, but there are many equipment links.
Iron ore powder is a kind of ore powder made of iron ore (ore containing iron elements or iron compounds) by processing, crushing, sorting, grinding, etc. The types of iron ore powder are mainly divided into magnetite powder, hematite powder, limonite powder, silicate powder of siderite iron, and pyrite. Iron ore powder is the main raw material of iron and steel industry.
Magnetite is a kind of ferromagnetic mineral, which is rich in Fe3O4 (formula: Fe3O4, molecular weight: 231.54).
It occurs in metamorphic deposits and endogenetic deposits and becomes hematite or limonite after oxidation, which is the main raw material for iron making.
Magnetite is an oxide mineral widely distributed in nature and rich in reserves. Its main producing areas are: the United States, Mexico, Sweden, Germany, Italy, Austria, Romania, Russia, northeast Siberia, the Middle East, Brazil.
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