关于云南磷石膏基胶凝材料的制备以及经济分析

发布时间：2018-05-07 01:36

本文选题：磷石膏 + α-型半水石膏　；参考：《昆明理工大学》2015年硕士论文

【摘要】：我国是一个农业大国,农业对磷肥、磷酸的需求量巨大,工业大量生产磷肥磷酸就会产生大量副产磷石膏。同时,我国对天然石膏的需求量也巨大,而天然石膏是宝贵的不可再生资源。因此将磷石膏资源化再利用,替代天然石膏进行生产利用,不仅可以消除磷石膏带来的环境危害,而且还可以节约天然石膏资源,同时还带来可观的经济效益和社会效益。因此,将磷石膏资源化再利用就显得意义非凡。本实验研究了利用磷石膏制备出符合国家建材行业标准的云南磷建筑石膏胶凝材料制品(α-型半水石膏；石膏基自流平砂浆),并进行实验参数优化,结合其质量性能、单位成本对云南磷建筑石膏基胶凝材料制品的综合效益进行分析。本文主要成果如下：1.本研究对去除磷石膏的主要杂质,磷、氟化物、有机物进行了大量实验。在传统常用的3种预处理方法：石灰中合法、水洗法、浮选法的基础上,结合我省云天化集团三环化工有限公司所提供的磷石膏的性质形态,提出了新的预处理方法柠檬洗涤法。该方法可以有效去除磷石膏中的大量杂质,且使得石膏晶体良好发展。2.本研究制备出α-半水石膏符合国家建材行业标准《α型高强石膏》JC/T2038-2010中α25标号等级的α-半水石膏,并且通过运用Matlab(7.0版本)对实验参数进行直观分析,进行实验参数优化。3.本研究以制备得出的α-半水石膏为主要胶凝材料,能够制备出符合国家建材行业标准《石膏基自流平砂浆》JC/T1023-2007的石膏基自流平砂浆。并且利用Matlab(7.0版本)对实验参数进行直观分析,进行实验参数优化。4.本研究对实验所制备的云南磷建筑石膏胶凝材料制品进行了单位成分析和综合效益分析,本研究提出：有效利用云南磷石膏进行石膏胶凝材料制品的制备,可以减少堆场投资费用,场地维护费用,其材料制品可以带来可观经济效益。同时也为云南环境保护做出了贡献,为新型墙体和地面材料的发展提供了一定的参考。
[Abstract]:Our country is a big agricultural country, the demand of phosphate fertilizer in agriculture is huge, the production of phosphate fertilizer phosphoric acid in industry will produce a large amount of phosphogypsum, which is a by-product. At the same time, the demand for natural gypsum in China is also huge, and natural gypsum is a valuable non-renewable resource. Therefore, reusing phosphogypsum to replace natural gypsum can not only eliminate the environmental harm brought by phosphogypsum, but also save the natural gypsum resource, and bring considerable economic and social benefits at the same time. Therefore, it is of great significance to reuse phosphogypsum. In this paper, we studied the preparation of Yunnan phosphogypsum cementitious material (伪-type hemihydrate gypsum, gypsum based self leveling mortar) using phosphogypsum, and optimized the experimental parameters, combined with its quality and performance. The unit cost is used to analyze the comprehensive benefit of phosphogypsum based cementitious products in Yunnan. The main results of this paper are as follows: 1. In this study, a large number of experiments were carried out to remove major impurities, phosphorus, fluoride and organic compounds from phosphogypsum. On the basis of three traditional pretreatment methods: lime method, water washing method and flotation method, combined with the properties and forms of phosphogypsum provided by Yuntian Chemical Group Sanhuan Chemical Co., Ltd. A new pretreatment method, lemon washing, was proposed. This method can effectively remove a large amount of impurity in phosphogypsum and make gypsum crystal develop well. In this study, 伪 -hemihydrate gypsum with 伪 -25 grade in JC/T2038-2010 was prepared according to the national building materials industry standard < 伪 type high-strength gypsum >, and the experimental parameters were analyzed intuitively by using Matlab(7.0 version, and the experimental parameters were optimized. In this study, the 伪 -hemihydrate gypsum was used as the main cementing material, and the gypsum based self-leveling mortar which was in accordance with the national standard of building materials industry < gypsum based self-leveling mortar > JC/T1023-2007 was prepared. And use Matlab(7.0 version) to carry on the visual analysis to the experiment parameter, carry on the experiment parameter optimization. 4. In this study, the unit analysis and comprehensive benefit analysis of Yunnan phosphogypsum gypsum cementitious products were carried out, and it was proposed that Yunnan phosphogypsum be used effectively to prepare gypsum cementitious material products. It can reduce the cost of investment and maintenance of yard, and its material and products can bring considerable economic benefit. At the same time, it also contributes to the environmental protection of Yunnan, and provides a certain reference for the development of new wall and ground materials.
【学位授予单位】：昆明理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TQ177.3;F426.7

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