The compound desulfurizer
Hot metal desulphurization process outside the furnace can make the sulfur content down to low levels, liberation of the blast furnace production capacity, lighten the burden of desulfurizing blast furnace, and can guarantee steel "eat" concentrate, reduce the production cost of converter steelmaking, increase productivity, effectively improve the iron, steel, wood system comprehensive economic benefits. On the issue of the efficiency of desulfurization, studies have shown that desulfurization costs of converter, ladle furnace desulphurization pretreatment cost minimum. Therefore, it is of great significance to the desulphurization in converter steelmaking stove.
Outside the furnace desulfurization methods and advantages
Hot metal desulphurization outside the furnace technology since the 1930 s, 60 s vigorous development, has become mature in foreign countries, are widely used in practical production. Treatment methods are mainly spread method, shaking method, mechanical mixing method, injection method, bubble, bubble mixing pump, bell to join, continuous desulphurization method and magnesium method, etc. Large and medium-sized steel mills at home and abroad is widely used in mechanical mixing method, injection method, magnesium based desulfurization method and pure magnesium desulphurization method.
Mechanical mixing method is to add calcium oxide or calcium carbide base desulfurizer to borrow in hot metal mixer (cross) impeller rotation, the hot metal powder with good contact reaction, good desulfurization effect. Its advantages are high efficiency desulfurization to less than 0.005%), costs for equipment is less, the processing capacity is big, the desulfurizer consumption.
Inert gas injection method is use for carrier will desulphurizing powder (a percentage of CaO, the combination of CaC2 and Mg) by spray gun sprayed into the molten iron. Injection method is divided into mixed injection and compound injection, injection is mixed mix two or more good powder (+ + Mg Mg, CaC2, CaO CaO + CaF2 + C) into molten iron, compound injection is to all kinds of powder from spray cans in proportion to their respective sprayed into the molten iron. Its advantage is high desulfurization rate, simple equipment, easy operation, easy to control.
Magnesium magnesium desulfurization method is divided into packets wire feeding method and metallic magnesium granules injection method. Because the new desulfurization process is far superior to the desulfurization method, many manufacturers are becoming the preferred scheme of new and modified desulfurization device.
Hot metal desulphurization technology outside the furnace has the following advantages: one is the molten iron to ultra low sulfur content, can be conducive to the converter smelting quality, ultra-low sulphur steel to steel product upgrading, production of high quality steel products with high added value. Second, can guarantee the converter charging hot metal is low in sulfur and, reduce the production cost of converter steelmaking, increase productivity, save energy consumption of steel. Three is the liberation of the blast furnace production capacity, the blast furnace process almost don't consider product sulfur content. Desulfurization of blast furnace burden, can reduce the slag basicity, reducing slag quantity, reduce the harm of alkali metal, is advantageous to the low smelting ferrosilicon, make the blast furnace is stable, line, to reduce the coke ratio and energy saving. Fourth, can effectively improve the comprehensive economic benefits of steel mills.
In order to comprehensively and accurately reflect the cast iron compound desulfurizer industry development present situation and future trend of Chinese commerce intelligence network launched the report on the basis of a lot of careful market research, mainly on the basis of China's national bureau of statistics, the general administration of customs, the relevant industry association, domestic and foreign relevant basic information of newspapers and magazines, and professional research institutes and other published and provide a large number of data. The current situation of the cast iron compound desulfurizer industry of our country, cast iron compound desulfurizer market supply and demand, the situation of cast iron compound desulfurizer industry chain, the condition of cast iron compound desulfurizer key enterprises, such as content, detailed and in-depth analysis on the market development trend of cast iron composite desulfurizer detailed in-depth analysis, and based on the trajectory of industry for the future development prospect and trend of prudent judgment, for cast iron compound desulfurizer industry investors looking for new investment opportunities. For companies to understand iron compound desulfurizer industry, provide decision-making reference for investment in the field.
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