Chinese,manganese,ferroalloy,p business, insurance Chinese manganese ferroalloy production status and process
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vOnly when manganese powder is very fine (-200 mesh is above 80%),and does not allow agglomeration containing residual carbon block products, usethe method of plelletzing or pressure the ball. The manganese powderagglomeration exist the problems: the small scale of production, process energyconsumption; less capital investment, more serious environmental pollution;only can self-sufficient, due to small, low-grade equipment and backwardtechnology; due to the types of manganese powder isvarious and process requirements are different, leading complex agglomerationvarieties, there are often requiring two or more kinds of agglomeration,resulting in equipment wasted and in the process of pelletizing need to addinorganic binder, which have increased the smelting energy consumption of theprocess and the impurities of manganese ferroalloys, has an impact on thesmelting process and product quality.Lower the P, C, S impuritiesin the alloys:With the performance requirements of the iron and steel materials improved,pure steel has become one of the important direction of developing iron andsteel production, and pure steel production can not be separated from the lowimpurity content ferroalloy. The ferromanganese as large ferroalloy consumptionin steel production, plays a pivotal role in the production of clean steel. Insteel production, manganese ferroalloy is mainly in restore refining stage as adeoxidizer and alloying elements added in liquid steel, one of the mainimpurities in the ferromanganese phosphorus almost entirely into the moltensteel, one of the limiting element of pure steel smelting. In order to produce high-qualitylow-phosphorus low-carbon pure steel, The requirements of the content offerromanganese P, C, S and other impurities in the steelmaking increasingly high.In addition to manganese-rich slag smelting process can remove phosphorus, inother ferromanganese smelting process, most of the raw materials in thephosphorus were into the manganese ferroalloys, the phosphorus content in theferromanganese mainly by the proportion of ingredients to control. Therefore,ferromanganese Dephosphorization, lowering carbon, remove silicon is a problemthat deserve to concern.Improve manganese alloy grade and purity:pure steel production promote pure ferromanganese production, improve productquality and performance requirements to meet the iron and steel industry, will increasethe demands of manganese taste and purity in manganese ferroalloys. Therefore, calledpure ferromanganese of Mn e 90%, Si d 1.5% C d 0.1%, P d 0.05% manganese ferroalloy. In the production of pure steel andspecial steel, need C d 0.1% of ultra-low carbon ferromanganese (the C and P content in lowcarbon ferromanganese and manganese). According to metal powder exporter, becauseof the higher prices of metal ferromanganese, there are some certainconstraints on the use. With the development of the steel-making technology,high-quality pure ferromanganese instead of manganese metal is an inevitabletrend. At present, Chinese pure ferromanganese production without a majorbreakthrough, there are very few manufacturers according to International GradeC d 0.12%, C d 0.14% to produce low carbonferromanganese, the manufacturers produce pure ferromanganese is minimal. Themain reason is: traditional large submerged arc furnace produce pureferromanganese have some difficulties; Chinese produce low carbonferromanganese furnace are basically self-baking electrode, the problems of increasingthe carbon can not be solved; although manganese metal method can avoidincreasing carbon, but because of their high production costs, the incrementaldevelopment of its market is limited.Source:http://www.mhcmp.com Article Tags: Manganese Ferroalloy, Manganese Powder, Manganese Ferroalloys, Smelting Process, Pure Steel, Steel Production, Pure Ferromanganese, Carbon Ferromanganese
Chinese,manganese,ferroalloy,p