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Solubilisation of basic ferric sulphate - from oxidn. of hydrated ferrous sulphate, by reaction with sulphuric acid giving prod. useful as sewage flocculant
Solubilisation of basic ferric sulphate - from oxidn. of hydrated ferrous sulphate, by reaction with sulphuric acid giving prod. useful as sewage flocculant
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机译：碱性硫酸铁的溶解-来自氧化。与硫酸反应生成水合硫酸亚铁，生成产物。用作污水絮凝剂
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摘要
Increasing the water-solubility of basic ferric sulphate (I) obtd. by oxidn. of solid ferrous sulphate (II) contg. water of crystallisation is effected by mixing the scarcely water-soluble (I) with dil. (20-40%) H2SO4 in the molar ratio 2 Fe(OH)SO4:0.3-0.7 H2SO4 and with recycled soluble (I) at a temp. between 15 and 80 degrees C and then allowing to solidify by storage. The solubilised (I), which is hydrated and has a molar ratio of 1 Fe2O3: 2.3-2.7 SO3 and gives under 2 (under 1) wt.% insol. residue, is useful as a flocculant for sewage. The process is esp. economical if waste H2SO4 esp. contg. Fe (from TiO2 mfr.) is employed.
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机译：增加碱性硫酸铁（I）的水溶性。被氧化。固体硫酸亚铁（II）续。结晶水是通过将几乎不溶于水的（I）与dil混合来实现的。 （20-40％）H2SO4，摩尔比2 Fe（OH）SO4：0.3-0.7 H2SO4，并在一定温度下与再循环的可溶性（I）混合。在15至80摄氏度之间，然后通过储存使其固化。溶解的（I）是水合的，摩尔比为1 Fe 2 O 3：2.3-2.7 SO 3，得到低于2（低于1）重量％的溶胶。残留物，可用作污水的絮凝剂。该过程特别是。如果废H2SO4特别是经济的。续使用Fe（来自TiO 2制造）。
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