The original physical state is different: the natural gypsum is a block bonded together, while the desulfurization gypsum exists as a single crystal particle; the grindability between the impurities of the desulfurization gypsum and the gypsum is quite different, and the coarse particles of the natural gypsum after grinding are mostly impurities desulfurization gypsum.

　　一、石膏与天然石膏的相同点

　　I. similarities between gypsum and natural gypsum

　　1、水化动力学和凝结特征分歧；

　　1. Differences in hydration kinetics and condensation characteristics;

　　2、主要矿物相、转化后的五种形态、七种变体物化性能分歧;

　　2. The main mineral phases, five forms after transformation and seven varieties have different physical and chemical properties;

　　3、脱硫石膏与天然石膏均无放射性，不危害安康。

　　3. FGD gypsum and natural gypsum are not radioactive and do not harm health.

　　二、脱硫石膏与天然石膏的不同点

　　II. Differences between FGD gypsum and natural gypsum

　　1、原始物理状态不一样：天然石膏是粘合在一同的块状，而脱硫石膏以单独的结晶颗粒存在；脱硫石膏杂质与石膏之间的易磨性相差较大，天然石膏经过粉磨后的粗颗粒多为杂质，而脱硫石膏其颗粒多的却为石膏，细颗粒为杂质，其特征与天然石膏正好相反；

　　1. The original physical state is different: the natural gypsum is a lump bonded together, while the desulfurized gypsum exists as a single crystal particle; the grindability between the impurities of desulfurized gypsum and gypsum is quite different, the coarse particles of natural gypsum after grinding are mostly impurities, while the particles of desulfurized gypsum are mostly gypsum, and the fine particles are impurities, whose characteristics are just opposite to those of natural gypsum;

　　2、颗粒大小与级配：烟气脱硫石膏的颗粒大小较为均匀其散布带很窄，高细度（200目以上）、颗粒主要集中在30-60μm之间，级配远远差于天然石膏磨细后的石膏粉。

　　2. Particle size and Gradation: the particle size of FGD gypsum is relatively uniform, and its dispersion band is very narrow. The high fineness (above 200 mesh) and particles are mainly concentrated in the range of 30-60 μ m. The gradation is far worse than that of the ground gypsum powder of natural gypsum.

　　3、高含水量，含水量普通在10%左右以至更高，活动性差，只合适皮带保送。

　　3. High water content. The water content is generally about 10% or higher, with poor mobility. It is only suitable for belt transportation.

　　4、杂质成分上的差别，招致其脱水特性、易磨性及煅烧后的熟石膏粉在力学性能、流变性能等宏观特征上的不同。

　　4. The difference of impurity composition results in the difference of dehydration characteristics, grindability and mechanical and rheological properties of calcined gypsum powder.

　　5、脱硫石膏的产出在全国散布比拟平均，特别是石膏产品大量生产地的东部兴旺地域脱硫石膏的产量也很大，而且脱硫石膏的品位又很高，普通都在90%以上；这样就补偿了我国高品位的天然石膏储量小、产量低、其产品远离生产地的严重缺陷。

　　5. The output of FGD gypsum is relatively average in the whole country, especially in the Eastern prosperous area where gypsum products are produced in large quantities, the output of FGD gypsum is also very large, and the grade of FGD gypsum is very high, which is generally more than 90%. In this way, it compensates for the serious defects of small reserves of high-grade natural gypsum, low output and far away from the production place.

　　1.脱硫石膏，硫石膏过FGD石膏，是对含硫燃料（主要是煤）熄灭后产生的烟气停止脱硫净化处置而得到的工业副产石膏。主要成分和天然石膏一样为二水硫酸钙，但是纯度和细度更高。

　　1. FGD gypsum is an industrial by-product gypsum obtained by stopping desulfurization and purification of flue gas produced after sulfur fuel (mainly coal) is extinguished. The main component is calcium sulfate dihydrate as natural gypsum, but its purity and fineness are higher.

　　2.成分比照

　　2. Comparison of ingredients

　　项 目 CaO SiO2 Al2O3 SO3 Fe2O3 MgO Loss 筛余(45μm)/%

　　Project Cao SiO2 Al2O3 SO3 Fe2O3 MgO loss (45 μ m) /%

　　天然石膏 31.5 4.3 1.73 41.1 1.15 1.30 17.2 8.8

　　Natural gypsum 31.5 4.3 1.73 41.1 1.15 1.30 17.2 8.8

　　脱硫石膏 31.6 2.7 0.7 42.4 0.5 1.0 19.2 1.0

　　Desulfurization gypsum 31.6 2.7 0.7 42.4 0.5 1.0 19.2 1.0

　　以上是济南石膏粉厂家为大家介绍的相关内容，想要了解更多内容，欢迎访问网站：//www.gochiism.com

　　The above is the relevant content introduced by Jinan gypsum powder manufacturer. To learn more, please visit the website: //www.gochiism.com