阅读说明：本技术 制造颗粒或粉末的方法 (Method for producing granules or powders ) 是由 F·杰克尔 M·K·米勒 A·施密特 于 2020-03-20 设计创作，主要内容包括：本发明涉及制造粉末或颗粒的方法,所述粉末或颗粒以20:1至100:1的(A):[(B)+(C)]重量比含有(A)至少一种螯合剂,其选自甲基甘氨酸二乙酸(MGDA)的碱金属盐和谷氨酸二乙酸(GLDA)的碱金属盐和亚氨基二琥珀酸(IDS)的碱金属盐,(B)至少一种碱金属硅酸盐,和(C)至少一种用碱部分中和的含羧酸基团的(共)聚合物,其中所述粉末或颗粒含有至少75重量％的螯合剂(A),所述方法包括如下步骤：(a)将至少一种螯合剂(A)和至少一种碱金属硅酸盐(B)及至少一种(共)聚合物(C)在水存在下混合,(b)通过喷雾干燥或喷雾造粒使用入口温度为至少125℃的气体而移除大部分所述水。(The present invention relates to a process for the manufacture of a powder or granules containing (a) at least one chelating agent selected from the group consisting of alkali metal salts of methylglycinediacetic acid (MGDA) and of glutamic diacetic acid (GLDA) and of iminodisuccinic acid (IDS) in a weight ratio of (a): [ (B) + (C) ] from 20:1 to 100:1, (B) at least one alkali metal silicate, and (C) at least one carboxylic acid group containing (co) polymer partially neutralized with a base, wherein the powder or granules contain at least 75 wt% chelating agent (a), said process comprising the steps of: (a) mixing at least one chelating agent (a) and at least one alkali metal silicate (B) and at least one (co) polymer (C) in the presence of water, (B) removing a major part of said water by spray drying or spray granulation using a gas having an inlet temperature of at least 125 ℃.)