Let's look at the oxygenator first, mainly potassium permanganate and potassium chlorate (sintering guest: 29263368). Their function is mainly to decompose oxygen and increase the oxidation atmosphere of sintered materials, which has four advantages: first, fuel combustion is sufficient and fuel consumption is saved; Secondly, it can promote the speed of carbon combustion and achieve the purpose of increasing production, mainly because the positive reaction of carbon combustion is strengthened with the increase of oxygen concentration; Thirdly, the reduction of ferrous iron is mainly the enhancement of oxidation atmosphere (sintering guest: 29263368); With the enhancement of the fourth oxidation atmosphere, the probability of iron oxide and calcium oxide forming calcium ferrite increases. Needle-like calcium ferrite mentioned in zer798 is the mineral phase structure with the best strength and reducibility, and other forms of calcium ferrite also exist in large quantities.
See boric acid or boric anhydride to prevent pulverization, mainly to prevent the generation of calcium orthosilicate (dicalcium silicate).
The removal of sintering S is mainly CaCl _ 2, and sulfur can be removed after adding additives. Baosteel and other large domestic iron and steel enterprises have carried out experiments of adding CaCl _ 2. You can read the paper.
For all-refined sinter, it is suggested that additives should be added in the production of high silicon and high alkalinity sinter because of its high iron content.
In the following two cases (sintering customers), it is recommended not to add additives: it is not recommended to use a large amount of hematite as the main raw material, and the air excess coefficient is high; There is no calcium orthosilicate pulverization in the production of low alkalinity sinter or low silicon sinter, so it is recommended not to add it;