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Advantages of low-carbon ferrochrome

2019-11-13
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The choice of furnace charge is wide, and low-cost low-carbon chrome iron powder can be used instead of higher-cost low-carbon and low-carbon chrome iron powder, and many carbon scraps are used. Appropriately add nitrogen content in steel and reduce the use of oxidized ferrous alloys. For each 0.1 ruler method, the nitrogen content can be reduced by 2 nickel content without affecting the mechanical function of stainless steel. Refractory chromite

The low-carbon chromium iron powder has low construction cost and is suitable for the transformation of existing equipment. For example, the converter workshop can participate in the mother liquid melting equipment, while the electric furnace workshop adds a ruler furnace and gas blowing and conveying equipment. Compared with the traditional method, because the furnace capacity ratio is increased, after improving the oxygen supply intensity, the Q345CH section steel blowing time is controlled within half an hour. In addition, the detachable hearth of the ruler saves refractory materials and repair time, and the cost is higher.

Almost all types of steel require manganese to deoxidize. Because the oxygen product produced when manganese is used for deoxidation has a lower melting point and is easy to float; manganese can also increase the deoxidation effect of strong deoxidants such as silicon and aluminum. All industrial steels need to participate in a small amount of manganese as a desulfurizing agent, so that the steel can be hot-rolled, cast and other technologies without cracking. Manganese is still the most important alloy element in various steel types. 15 % Of manganese to add structural strength to steel. Silicon is the most important alloying element in pig iron and carbon steel after manganese. In the production of steel, silicon is mainly used as a deoxidizer for molten metals, or as an alloy additive to add strength and improve the function of steel. Silicon is still a useful stone grinding medium, it can make the carbon in cast iron into free stone grinding carbon. Participate in the specification of up to 4% silicon in gray cast iron and nodular cast iron. Many manganese and silicon are added to the molten steel in the form of iron alloys: ferromanganese, silicomanganese and ferrosilicon.

The raw materials for manganese-silicon alloy production are manganese ore, manganese-rich slag, silica, coke, dolomite (or limestone), and fluorite. Manganese-silicon alloy can be produced by using one type of manganese ore or mixed ore containing manganese slag (including manganese-rich slag). Because the manganese-silicon alloy requires lower iron and phosphorus content than the high-carbon ferromanganese, the manganese ore requested to exercise the manganese-silicon alloy has a higher manganese iron ratio and manganese phosphorus ratio. The higher the manganese ore used, the better the targets.


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