摘要:
An efficient process to produce calcium thiosulfate (CaS 2 O 3 ) from lime, sulfur and oxygen is described. By selecting appropriate process conditions such as mole ratios of lime to sulfur, temperature and pressure of the reaction process and the oxidation conditions, including rate and duration, the concentration of byproducts in the resulting suspension can be reduced to about 2% by weight or less. The solid particulate dispersion in the suspension tends to form a slimy solid suspension that is hard to filter if not treated properly. The suspension then can be acidified and treated with a flocculant. This agglomerates the solids into a floc that filters with ease. The resulting calcium thiosulfate is a clear liquid with concentrations achievable up to 29%.
摘要翻译:描述了从石灰,硫和氧产生硫代硫酸钙(CaS 2 O 3)的有效方法。 通过选择适当的工艺条件,例如石灰与硫的摩尔比,反应过程的温度和压力以及氧化条件(包括速率和持续时间),所得悬浮液中副产物的浓度可以降低至约2重量%以下 。 悬浮液中的固体颗粒分散体倾向于形成粘稠的固体悬浮液,如果不能正确处理则难以过滤。 然后将悬浮液酸化并用絮凝剂处理。 这将固体聚集成一个容易过滤的絮凝物。 所得到的硫代硫酸钙是一种透明液体,浓度可达29%。