The FGD gypsum should be dried at low temperature for the use of cement retarder.
脱硫石膏作水泥缓凝剂必须低温烘干。
The cured gypsum can be used as the raw material of a cement retarder and building gypsum.
这种固化石膏可以用于水泥缓凝剂和建筑石膏的原材料。
The FGD gypsum similar to the natural gypsum in common characteristics, and is adequately used as cement retarder.
热电厂脱硫石膏与天然二水石膏相似，适合作水泥缓凝剂。
The trials show the cement retarder acceptable at lower energy consumption, lower cost and no secondary pollution.
试验表明，该新工艺可生产出合格水泥缓凝剂产品，并且能耗低，成本低，无二次污染。
Impurities from phosphogypsum had deleterious effect on the property of cement when used as cement retarder, which caused limited application.
磷石膏用作水泥缓凝剂时，其中含有的杂质对水泥的性能产生不利影响，因此使其应用受到限制。
The application status of phosphogypsum is presented. Some processes of producing cement retarder by phosphogypsum including author's experimental process are introduced.
简要叙述了磷石膏利用的基本概况，介绍了几种各具特色的磷石膏制水泥缓凝剂的生产工艺流程，以及作者的实验流程。
After many grinding mixture ratio tests in laboratories, the paper studies the effect on ordinary cement and slag cement of desulfurized gypsum as cement retarder, instead of raw gypsum.
通过大量的化验室小磨配比试验，研究了脱硫石膏代替天然二水石膏作水泥缓凝剂对普通水泥、矿渣水泥各项性能的影响。
The paper introduces the field performance of a new kind of oil well cement retarder QR-300C, and its application in production string cementing on three deep exploratory Wells at Tuha oil field.
介绍了一种新型油井水泥缓凝剂QR- 300c的应用性能和在吐哈地区3口深探井油层套管固井中的应用情况。
The properties include rheology, stabilization, thicken time, fluid loss of grout and pressure strength of cement etc, and SDJ2 is tested with SDH-2 retarder.
这些性能包括水泥浆的流变性能、稳定性、稠化时间、失水量和水泥石的抗压强度等，并且将SDJ2与自制缓凝剂SDH - 2进行了配方试验。
The sodium gluconate has served as one kind of good retarder, and also has the excellent plasticization effect to the cement.
葡萄糖酸钠作为一种良好的缓凝剂，对水泥也有较显著的塑化效果。
This paper expresses a kind of CWP composite cement grout made up of water, cement, water glass as accelerant and phosphate as retarder.
研制了一种以无机聚合物（水玻璃）为速凝剂、以磷酸盐为缓凝剂配制而成的CWP水泥复合浆液。
Cement prepared with solidified phosphogypsum as retarder had similar setting time as cement prepared with natural gypsum and higher strength than them.
固化磷石膏磨制的水泥和天然二水石膏磨制水泥相比，二者的凝结时间最接近，强度有一定的提高。
Results show that, as the chemical gypsum was used as retarder, the cement properties can meet the requirements of the national standard.
研究结果表明：用化工石膏作缓凝剂，水泥性能符合国家标准规定。
Results show that, as the chemical gypsum was used as retarder, the cement properties can meet the requirements of the national standard.
研究结果表明：用化工石膏作缓凝剂，水泥性能符合国家标准规定。
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