石膏的

The invention relates to a method of preparing desulfurization gypsum dry powder painting putty by using desulfurization gypsum as raw material, which belongs to chemical construction material and solid castoff comprehensive utilization field.

本发明涉及一种以脱硫石膏为主要原料制备脱硫石膏干粉批墙腻子的方法，属化学建筑材料和固体废弃物综合利用技术领域。

The raw material is limestone because of its low-price, the product-gypasum is reliable enough to take the palce of natural gypasum.

采用价廉易得的石灰石为原料，脱硫产物石膏品质优良，可代替天然石膏使用。

Taking natural anhydrate(anhydrous gypsumⅡ) as major raw material,adding composite activator for modification to adjust setting time,flexural strength and compression strength,then mixed and milled with proper amount of composite water-retention agent,fly ash and air entraining agent to obtain plastering gypsum .

以天然硬石膏为主要原料，掺加复合激发剂进行改性处理，调节凝结时间及抗折、抗压强度，然后辅以适量复合保水剂、粉煤灰掺合料、引气剂等，磨细混匀后即得到抹灰用的粉刷石膏。

A kind of α-hemihydrated gypsum of great strength is prepared by suitable autoclave technology by using fibrous gypsum as raw materials.

以纤维石膏矿石为原料，采用合理的蒸压工艺研制了α－型高强度半水石膏。

Phosphogypsum reacts with ammonium hydrocarbonate at 5-30℃ to obtain ammonium sulfate solution,then the solution reacts with potassium chloride at 30℃ with adding an organic solvent to produce potassium sulfate.

介绍了由磷石膏制硫酸钾的新工艺：磷石膏与碳酸氢铵在 5 - 30℃下反应，得硫酸铵溶液，该溶液与氯化钾在 30℃左右反应，并添加一种有机溶剂，得硫酸钾。

Shandong Huanghua NewBuilding Materials Co., Ltd (山东皇华新型建材有限公司) is a technology improvement of dahan gypsum mineral deposit explorationplaster plaster cast of it, the panel and its system, tectorial membrane the development, production, and the domestic sales, trade and technical services 100,000 square meters, standardized and automated production plant and 50,000 square meters, 5 of the assembly with modern how and laboratories.

山东皇华新型建材有限公司（Shandong Huanghua NewBuilding Materials Co。，Ltd）是一家集石膏粉、石膏板及其系统、覆膜板研发、生产、国内销售、对外贸易、技术服务于一体的大型现代化建材企业。公司占地100000平方米，拥有标准化厂房50000平方米，自动化生产流水线5条，并配有现代化质检中心和化验室。

Shandong Huanghua NewBuilding Materials Co., Ltd (山东皇华新型建材有限公司) is a technology improvement of dahan gypsum mineral deposit explorationplaster plaster cast of it, the panel and its system, tectorial membrane the development, production, and the domestic sales, trade and technical services in one large modem building materiats, the company occupies 100,000 square meters, standardized and automated production plant and 50,000 square meters, 5 of the assembly with modem how and laboratories.

山东皇华新型建材有限公司（Shandong Huanghua NewBuilding Materials Co。，Ltd）是一家集石膏粉、石膏板及其系统、覆膜板研发、生产、国内销售、对外贸易、技术服务于一体的大型现代化建材企业。公司占地100000平方米，拥有标准化厂房50000平方米，自动化生产流水线5条，并配有现代化质检中心和化验室。

The results show that one type of soft slurry occurs on the surface of mortar prism due to addition of limestone filler and a mass of thaumasite and gypsum forms in the slurry.

结果表明：掺石灰石粉使水泥砂浆受侵蚀后表面呈软泥状，主要腐蚀产物为硅灰石膏和石膏，表现为典型的TSA破坏特征，其强度损失率大于纯水泥砂浆。

Objective: To compare the clinical effects between manual reduction with plaster immobilization and limited internal fixation combined with plaster in management of elderly patients with distal radius factures.

目的： 研究中老年桡骨远端骨折单纯手法复位石膏外固定与手法复位经尺骨交叉克氏针内固定加石膏托外固定2种治疗方法的临床疗效。

Using phosphogypsum for gypsum-based self-leveling materials＇ preparation has good prospects for economic benefit and market development.

用磷石膏配制石膏基自流平材料可变废为宝，具有良好的经济效益和市场开发前景。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。