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英国铸铁研究协会的工作,说明石灰95％与莹石5％的混合物和多孔塞包联合使用,能够迅速地把铁水含硫量降到任意需要的程度,其中包括生产球墨铸铁与蠕墨铸铁所需的低含硫量. 组成这种混合物的原料价格便宜,容易买到。脱硫时产生的渣呈干性粒状,容易从铁水表面除去.使用这种方法.与用碳化钙脱硫相比,不会引起环境污染,所产生的废渣没有气味,处理时也没有公害. 为了达到一定的脱硫程度,石灰、莹石混合物的加入量必须是碳化钙的两倍,但总的处理费用还是降低了。石灰,莹石混合物已经成功地在英国的铸造生产中用于各种铸铁的脱硫,每次处理铁水可达20吨,也可以进行连续脱硫.脱硫成本较低,废渣处理容易,这两种优点的结合,将会使石灰、莹石混合物法,在未来得到较大的应用.
The British Society for Foundry Research shows that the combined use of 95% lime and 5% fluorite combined with a porous plug can quickly reduce the sulfur content of molten iron to whatever degree is required, including the production of ductile iron and compacted graphite cast iron Low sulfur content required The raw materials that make up this mixture are cheap and easy to buy. Desulfurization slag was dry granular, easy to remove from the surface of molten iron.Using this method.Compared with calcium carbide desulfurization, will not cause environmental pollution, the resulting residue is odorless, no pollution during treatment.In order to achieve A certain degree of desulfurization, lime, fluorite mixture must be added twice the amount of calcium carbide, but the total processing costs or reduced. Lime and fluorite mixtures have been successfully used for desulphurization of various cast irons in the UK for foundry production, with up to 20 tons of hot metal per treatment, and also with continuous desulphurization. Combination, will make lime, fluorite mixture method, in the future to get a larger application.