The Fe3O4 and Fe2SiO4 in copper slag were successfully reduced to metallic iron by coal based direct reduction Under the best reduction conditions of 1300 °C reduction temperature 30 min reduction time 35 wt % coal dosage and 20 wt % CaO dosage 0 75 binary basicity the Fe grade of obtained iron concentration achieved 91 55% and the Fe recovery was 98 13% The kinetic studies on
Get PriceAiming at recovering iron from high iron content copper slag this article introduced a combination technology of deep reduction and magnetic beneficiation investigated the iron recovery efficiency and optimized the technical conditions When coke powder with 86wt% fixed carbon was used as a reductant iron was successfully extracted from the copper slag Under the optimized condition of the
Get PriceWhen the steel slag meets the mass fraction of iron at about 25% including 10% metal iron it can be directly used for steelmaking and iron making materials after manual selection and magnetic separation and the internal direct circulation of steel slag can be realized
Get PriceThe large chunks of stone containing the ore are broken up by giant crushers 2 These pieces are then fed into rotating roll mills and ball mills which pound and grind the ore into finer particles 3 After crushing and milling the valuable iron ore particles can be separated from the waste using magnetic separators
Get PriceMost people think of iron as a magnetic material Iron is ferromagnetic attracted to magnets but only within a certain temperature range and other specific conditions Iron is magnetic in its α form The α form occurs below a special temperature called the Curie point which is 770 °C Iron is paramagnetic above this temperature and only
Get PriceIron droplets are recovered by magnetic separation and remained slag is sold for various purposes such as civil engineering cement or concrete resource BF slag is completely recycled while small fraction of steelmaking slag cannot be utilized due to the elution of hazardous elements such as heavy metals or fluorine
Get PriceMagnetite is a mineral and one of three common naturally occurring oxides of iron Its chemical formula is Fe 3 O 4 and it is a member of the spinel group Magnetite is ferrimagnetic it is attracted to a magnet and can be magnetized to become a permanent magnet itself It is the most magnetic of all the naturally occurring minerals on Earth
Get PriceIt is advantageous to separate this iron from the slag for the purpose of using the iron recovered as a substitute for scrap iron and / or making effective use of the slag for applications where iron is an impurity Hence after cooling the steelmaking slag is crushed and the iron is recovered by magnetic separation
Get PriceThis stuff is boiler slag which is a recycled product from coal burning plants When coal is fired at over 2500 degrees it melts and produces a by product called slag When the slag is cooled through a process called vitrification it crystallizes forming sharp angular granules in a variety of sizes We reclaim this slag and put it
Get PriceMost stone meteorites will not have shiny crystals in them They will not be layered or banded with different strips of mineral types So Solid and Not Crystalline and Not layered are phrases to remember Stone meteorites often have grains of nickel iron in them Metallic iron in rocks from the Earth is very rare
Get PriceIron is a chemical element and a metal It is the most common chemical element on Earth by mass and the most widely used metal It makes up much of the Earth s core and is the fourth most common element in the Earth s crust The metal is used a lot because it is strong and cheap Iron is the main ingredient used to make steel Raw iron is magnetic attracted to magnets and its compound
Get PriceJan 20 2024 #1 Would sand that from iron ore slag make a safe substrate for planted tank use My local landscaping materials place has such sand available and listed under their aquarium supplies section They said many people use it I just wanted to know if anyone here had anymore info on it It sounds a lot like flourite sand just a lot
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Get PriceApplications Slag processing equipments can supply crushing magnetic separation separation grinding and other deep processing First isolated particles can be melted steel making the rest of the coarse particles used as motorways gravel aggregate material crushed into fine slag powder can be elected iron powder the rest was used for cement and concrete admixtures high activity washed
Get PriceNormally followed by electric arc steel making; Removal of O 2 from iron in solid state by gaseous or Recover/regenerate Na 2 CO 3 from slag 9 Steel Making Oxygen Furnace Hot metal pure and fine iron oxide which can be recycled within the steel plant or sold to pigment users or grown with specific magnetic properties ferrites
Get PriceSteel slag a by product of steel making is produced during the separation of the molten steel from impurities in steel making furnaces using magnetic separator on conveyor and/or crane electromagnet is important to the steelmaker as the metals can then be reused within the steel plant as blast furnace feed material for the production
Get PriceFeb 16 2022Iron making evolved over a few thousand years Using the ancient bloomery method iron ore was converted directly into wrought iron by heating the ore while at the same time melting the ore s impurities and squeezing them out with hand hammers This is also called the direct process
Get PriceSlag recovered from a 3 000 year old Egyptian copper mine indicates that the magnetic field could double in just 20 years Ron Shaar of the Hebrew University of Jerusalem explained Their measurements plus theoretical models showed that the magnetic field s strength peaked around 3 000 years ago in the middle Egypt s Iron Age
Get PriceTap Slag This is waste from bloomery smelting produced by a tapping furnace and is easily identified by the flow patterns on the surface Each smelt is likely to have taken many hours and generated kilos of molten slag which in itself also contained iron and if this material was not then exploited for that iron content making bloomery
Get PriceIron and steelmaking slags are defined as the solid material resulting from the interaction of flux and impurities in the smelting and refining of steels It is a by product of steel making and is produced during the separation of the molten steel from impurities in steel making furnaces That is the slag occurs during steel making in liquid
Get PriceIt is soft ductile fibrous variety that is produced from a semifused mass of relatively pure iron globules partially surrounded by slag It usually contains less than 0 1 percent carbon and 1 or 2 percent slag Wrought iron is magnetic corrosion resistant and easily welded It has high elasticity and tensile strength
Get PriceMagnetic Drum We at Linux Magnetics are engaged in manufacturing and supplying huge range of Magnetic Drum which is designed in such a way that it easily removes the magnetic or iron contaminants from minerals refractory s food product glass slag ores etc
Get PriceThe invention discloses a method for recovering iron in fayalite metallurgy slag through roasting of iron pyrite The method comprises the steps that the iron pyrite is added into the fayalite metallurgy slag leaching is conducted by means of an acid solution after oxidizing roasting of the iron pyrite is conducted at the temperature of 300 1100 DEG C and the leaching rate of iron is equal
Get PriceIn Denmark iron production by means of reducing bog‐iron ore with charcoal was carried out at least between the second and seventh century AD Since the 1960s magnetic mapping of iron slag remains have been used extensively at several sites in the southwestern part of Jutland in Denmark e g at Drengsted Snorup Krarup and Yderik A description of some of the magnetic surveying results
Get PriceDuring 1833 Dr Frederick Geissenhainer successfully used hot blast in experiments to smelt iron with anthracite coal In 1836 the Valley furnace in Pennsylvania used 100 % anthracite and in 1837 George Crane produced 36 tons of anthracite iron per week from one of his BFs at South Wales
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Get PriceAnswer 1 of 4 Slag is less dense than iron so it floats on the surface In a blast furnace the hot metal comes out of the tap hole in the side of the furnace and goes down a trough or runner A refractory coated skimming blade skims the surface of the hot metal directing the lighter slag off
Get PricePhoto Iron in action Chances are you re using magnetic iron III oxide right this minute in your computer s hard drive and small stones which form a waste slurry known as slag The iron made in a blast furnace is an alloy containing about 90 95 percent iron 3 4 percent carbon and traces of other elements such as silicon
Get PriceIron is a chemical element with the symbol Fe from Latin ferrum and atomic number 26 It is a metal in the first transition series It is the most common element by mass forming the planet Earth as a whole forming much of Earth s outer and inner core It is the fourth most common element in the Earth s crust
Get PriceThe magnetic iron in the copper slag gradually transformed to fayalite and the viscosity of the copper molten slag decreased as the magnetic iron content decreased during the reduction process
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