缓凝剂对晶面的选择性吸附，改变了二水石膏晶体的生长习性和形貌。
The preferred adsorption of retarders on different faces of gypsum crystal changes growth habit of dihydrate crystal and its crystal morphology.
当氟与铝共存时，石膏晶体的外形发生了极大的变化，几乎都形成了球状聚晶；
The shape of gypsum crystal changes little in the presence of Al 3+ ion.
结果表明：可溶磷主要分布在二水石膏晶体表面，其含量随磷石膏粒度增加而增加。
Experimental results show that water_soluble P 2O 5 is distributed on the surface of dihydrate gypsum crystals. Its content increases with increase of size of phosphogypsum.
可溶磷降低二水石膏脱水温度和液相过饱和度，使二水石膏晶体粗化，硬化体强度降低。
It reduces dehydration temperature and solubility of dihydrate gypsum, makes gypsum crystals thick and wide, and reduces the strength of hardened body.
此外，本发明的制备方法还很好地解决了现有技术中干法添硼所无法解决的硼砂和玻璃纤维在石膏晶体里的伴生问题。
In addition, the preparation method also solves associated problem of the borax and the fibreglass in plaster crystal which can not be solved by drying adding boron in the prior art.
揭示了缓凝剂对建筑石膏水化进程、晶体形貌和孔结构的影响规律和作用机制。
The effecting law and action mechanism of retarders on hydration process of building gypsum, crystal morphology of dihydrate and pore structure have also been revealed.
因为水晶解决的他们大号和结构，石膏脱水更比亚硫酸钙晶体，降低的副产品处理设备尺寸的要求。
Because of their larger size and structure, gypsum crystals settle and dewater better than calcium sulfite crystals, reducing the required size of by-product handling equipment.
缓凝剂在二水石膏晶胚表面的吸附，使其晶体生长受阻，成为水化的控制过程。
The adsorption of retarders on the surface of nuclei newly produced inhibits the crystal growth of dihydrate and accordingly controls the hydration process of gypsum.
结果表明：当硫酸钾结晶产品纯度较低、钾石膏含量较高时，晶体平均粒径及悬浮密度均较大；
When the purity of potassium sulfate crystal is lower and the content of the potassium phosphogypsum is higher, the median diameter of crystal particle and the density of suspension are higher.
结果表明：当硫酸钾结晶产品纯度较低、钾石膏含量较高时，晶体平均粒径及悬浮密度均较大；
When the purity of potassium sulfate crystal is lower and the content of the potassium phosphogypsum is higher, the median diameter of crystal particle and the density of suspension are higher.
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