In order to expand the utilization methods of desulphogypsum and meet the increasing need of α-hemihydrate gypsum, this paper studies the reasonable autoclave process of α-hemihydrate gypsum made from desulphogypsum.
为了扩大脱硫石膏的应用范围，满足α半水石膏日益增加的需求，本文试图通过蒸压法摸索脱硫石膏制备α半水石膏的合理生产工艺，并对影响其物理力学性能的一些因素进行了分析。
Using hemihydrate gypsum as main raw materials and frothing by gum rosin composite vesicant to produce gypsum heat preserving material.
以建筑石膏为原料，采用松香类复合发泡剂发泡制成石膏保温材料。
Hemihydrate can be used instead of gypsum.
半水物硫酸钙可以用来代替石膏。
The experimental results show that when the kinds of inorganic additives in the α-hemihydrate gypsum paste are different, both the shape and size of dihydrate gypsumcrystals that are formed during the hydration are different.
试验结果表明，无机外加剂的种类不同，α半水石膏水化时生成的二水石膏晶体的尺寸和形貌均不同。
A Discussion on the Concentration Assay for Hemihydrate Gypsum in Plaster of Paris Bandage-Viscose Form
粘胶型石膏绷带半水石膏含量测定方法的探讨
Choosing potassium sulfate as an activator to stimulate the activity of natural anhydrite, and modified its properties by adding Portland cement and hemihydrate gypsum respectively.
选取硫酸钾作为激发剂对天然硬石膏进行活性激发，并分别掺入硅酸盐水泥与半水石膏进行改性。
The decomposition rate of phosphate rock in hemihydrate gypsum section is increased to 95.48% from 87.66%, with the alleviated charge of conversion for dihydrate gypsum. The higher decomposition rate, better phosphorus recovery and the annual economic returns of 470 thousand RMB Yuan are achieved.
矿粉细度提高后，半水分解率由87.66%上升到95.48%，二水负荷降低，分解率提高，磷收率上升，年增经济效益47万元。
FGD gypsum which purity is high and the quality is stable is a wet powder because it forms in liquid. All the characteristics make FGD gypsum be appropriate for preparing α - hemihydrate gypsum with hydrothermal method in salt solution with atmospheric pressure.
脱硫石膏形成于液相环境中，具有纯度高、品质稳定、湿态粉体等特点，非常适合于用常压盐溶液法来制备α-半水脱硫石膏。
Multifunction & high-accuracy gypsum block is one of new types of wall materials made of hemihydrate gypsum and fly ash, and it has unique structure and outstanding performance.
以半水石膏、粉煤灰为主要原材料的高精度、多功能石膏砌块是一种构造独特、性能优良的新型墙体材料。
The results showed that multiple organic acids crystal modifier had the most significant effect and could prepare out of ideal short prismatic crystal of α - hemihydrate gypsum with aspect ratio closed to 1:1.
结果显示，多元有机酸类转晶剂作用效果最显著，可以获得长径比近1：1的理想短柱状晶体。
A new technology characterized as Steaming Boiling Operation was developed for converting dihydrate gypsum lumps into α hemihydrate by combining the virtues of Aqueous Solution Process and Steam Pressurized Process.
本工艺将α－半水石膏生产中的水溶液法和蒸汽加压法的优点巧妙地结合起来，用于二水石膏块矿的加工生产，形成了具有特色的汽液结合法工艺。
Research on α - Hemihydrate Gypsum Used for Casting Mold
铸型用α半水石膏的研究
Influence of Crystal Modifier on Morphology and Strength of α - Hemihydrate Gypsum Prepared by Desulfurization Gypsum
转晶剂对脱硫石膏制备α-半水石膏形貌及强度的影响
Research on Preparation and Trans-crystal Technology of α - Hemihydrate Flue Gas Desulfurization Gypsum with the Hydrothermal Method
水热法α-半水脱硫石膏制备工艺及转晶技术研究
According to the different preparing methods, it can change to α hemihydrate gypsum or β hemihydrate gypsum.
根据制备工艺的不同，可获得α型半水石膏或β型半水石膏。
Adding crystal modifier in gypsum, a hemihydrate gypsum was prepared by autoclave technology under the optimum condition.
在此基础上，在二水石膏原料中加入转晶剂，采用蒸压法在最佳工艺下制备α型半水石膏。
The additives containing alkalis oxide are not fit for hemihydrate gypsum-fly ash binder.
半水石膏粉煤灰胶结材中不宜使用含碱金属盐的外加剂。
A Research on the Properties and Microstructure of Hemihydrate Gypsum
半水石膏性能与微观结构的探讨
The influences of retarders, admixtures and water retention agents on the performance of β - hemihydrate gypsum plaster were study by a series of experiments in this paper.
通过实验研究了缓凝剂、掺材及保水剂对β半水型粉刷石膏性能的影响。
Adding crystal modifier to the reaction solution to change crystal morphology of α - hemihydrate gypsum from needle into short column was core technology in preparation of high-strength α - hemihydrate gypsum in liquid method.
在反应溶液中加入转晶剂，使α-半水石膏的晶体形貌由针状变为短柱状，是液相法制备高强α-半水石膏的核心技术。