首页>
外国专利>
Dry, pulverulent coating compsn. prodn. - by calcining gypsum from smoke gas desulphurisation to form hemi:hydrate, compacting, grinding and mixing with other components
Dry, pulverulent coating compsn. prodn. - by calcining gypsum from smoke gas desulphurisation to form hemi:hydrate, compacting, grinding and mixing with other components
展开▼
机译:干粉状涂料成分。产品-通过煅烧烟气脱硫中的石膏形成半水合物,压实,研磨并与其他组分混合
展开▼
页面导航
摘要
著录项
相似文献
摘要
A dry, pulverulent coating compsn. is produced by calcining gypsum obtd. during desulphurisation of smoke gas, into hemi-hydrate, compacting or stacking the obtd. beta-hemi- hydrate and regrinding it to the following mesh size:- 0-0.3 m 30-40 wt.%; 0.03-0.06 mm 5-12 wt.%; 0.06-0.1 mm 10-20 wt.%, 0.1-0.2mm 9-15 wt.%; 0.2-0.5 mm 8-18 wt.% and 0.5-1.0 mm 7-15 wt.%. The prod. is then mixed with other components of the coating compsn. Also claimed is prepn. of CaSO4. hemihydrate by calcining gypsum contg. less than 10 wt.% moisture to form the beta- hemi-hydrate, compacting dry and at room temp. the finely divided prod. with briquettes which are then ground to the above particle size distribution. The prod. is used in the building industry to form, when mixed with water, smooth and fine surfaces. It has good rheological and setting properties.
展开▼
机译:干燥的粉状涂料。由煅烧石膏obtd生产。在将烟气脱硫成半水合物时,将其压实或堆积。 β-半水合物并将其重新研磨成以下筛目尺寸:-0-0.3 m 30-40 wt。%; 0.03-0.06毫米5-12重量%; 0.06-0.1毫米10-20重量%,0.1-0.2毫米9-15重量%; 0.2-0.5毫米8-18重量%和0.5-1.0毫米7-15重量%。产品。然后将其与涂料组合物的其他组分混合。还声称是prepn。的CaSO4。通过煅烧石膏进行半水合。水分含量低于10%(重量)以形成β-半水合物,在室温下干燥压实。细碎的产品。用团块,然后将其研磨成上述粒度分布。产品。在建筑行业中使用时,与水混合可形成光滑而细腻的表面。它具有良好的流变性和凝固性。
展开▼