Iron Concentrate

Purity: 60% Iron
Humidity: 5%


Since the early Industrial Revolution in Europe, the use of steel has become an essential part of the industry. With increasing demand for steel, the production of iron concentrate also increased. Iron ore processing is one of the most important processes in the steel production chain. The processing of iron ore based on the product is divided into two categories: the production of granulated iron ore and the production of iron ore concentrate. The production of granular iron ore is carried out dry and waterless. Then, using physical separation methods (magnetic method), the iron ore is separated from low-grade waste. This product, which is called granulation iron, is not suitable for direct reduction due to its low grade, but can be used in a long oven. In ore deposits, the average cadmium of iron ore is low and the amount of excessive elements is acceptable. For this reason, concentrating is being developed for the elaboration of more advanced methods and more complex circuits. The processing circuit is generally made up of crushing, grinding, crushing and dewatering units. Along with these units, transportation, water supply, facilities and ... are the units of the side. The first stage (crushing) begins at the factory with the entry of mineral to the sandstone. In this section parts are cut from 20 to 25 centimeters in size smaller than 20-25 cm. Of course, at the entrance of the sinker, a fixed gravel is installed, the stomata of which are equal to the dimensions of the output of the sink. In this way, the smaller dimensions will not be sliced ​​so that they will not get smaller. Then the crushed minerals with the conveyor will enter the next stage of sanding and sifting. In this section, depending on the size and characteristics of minerals, it may be composed of two dry sanding stages, a cone crusher is used and mineral sizes up to 30 mm in size are reduced. Multi-stage grinding is performed to control grain size and prevent excessive crushing of mineral matter. The second stage is grinding, the minerals with dimensions less than 30 mm, in order to grinding, enter a grinding step which is performed more "more". At this stage, the materials are crushed by a self-winding mill or a self-compacting roller or press roller of up to 0.5-1.5 millimeters. This material is 1-0 / 5 then goes to the next step, where it is furthered by grinding mills. In these areas, the grinding takes place in the "Thor" environment, its grinding dimensions are controlled by the hydrocyclones, and the guidance of the materials that float in water and the slurry composition is made by pumps. The third step is priming. At this stage, the particles have reached the very small dimensions after passing the milling step, and it is necessary to enter the next step in order to separate the valuable materials from the waste products into the slurry. The slurry is guided by the pump to the magnetic separation stage. The more magnetic separators are drum-type separators. Slarry passes through these drums that have a magnetism. Irony minerals stick to the drum. At the end of the drum, they are collected by a blade on the drum. Other minerals in the slurry also come out of the trash. These magnetic separators are of low intensity, moderate intensity, high intensity, and high gradient numbers that are selected based on the characteristics of the minerals and the processing test carried out on the mineral material, and if elements such as phosphorus and Sulfur is present in the concentrate, the flotation method is used to separate the intruder from the concentrate. The fourth stage is also dewatering and the quenched steel contains water that should be dehydrated and dried, and moisture content should reach 10-9%. For this purpose, filters are used to separate the water from the concentrate. Then the dewatered concentrate is transferred to the product warehouse and decomposed there. Tailings are also diverted to a device called Titner. There solids are deposited there and the water overflows above the ticker. The solid particles are deposited through the tip of the tip of the tank to the center and pumped to the tail gate. To increase the rate of filtration, a polymeric chemical called floculant is used, which causes the waste particles to stick together and to increase their falling speed.