Phosphogypsum pretreatment

Hydrothermal Pre-Treatment Process of Phosphogypsum

2020-10-13  Volha Yahorava, Eugene Lakay, and Wilma Clark, "Hydrothermal Pre-Treatment Process of Phosphogypsum for Enhanced Rare Earths Recovery" in "Beneficiation of Phosphates VIII", Dr. Patrick Zhang, Florida Industrial and Phosphate Research Institute, USA

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磷石膏预处理技术规范

2021-5-13  ICS 13.030.20 CCS Z05 团体标准 T/CSPSTC XXX—2021 磷石膏预处理技术规范 Technical specification for phosphogypsum pretreatment (征求意见稿) • 2021-XX-XX发布 2021-XX-XX实施

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"Hydrothermal Pre-Treatment Process of Phosphogypsum

Phosphogypsum (PG) is an industrial waste of phosphoric acid (H3PO4) production from phosphate ore by sulphuric acid (H2SO4) digestion, commonly known as the “wet acid” process. Phosphate rock often contains some valuable rare earth elements (REE) and it is well-established that from 70% to 85% of REE originally present in the phosphate rock end up in the PG, with an average REE content of ...

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Effects of impurities in phosphogypsum and pre-treatment ...

Phosphogypsum is a solid waste generated in phosphoric acid production. Currently, a large number of phosphogypsum are discarded without any treatment, leading to considerable land occupation and ...

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In Situ Remediation of Phosphogypsum with Water

2021-11-18  The accumulation of original phosphogypsum (OPG) has occupied considerable land resources, which have induced significant environmental problems worldwide. The OPG-based cemented paste backfill (OCPB) has been introduced as a promising solution. In this study, a water-washing pre-treatment was used to purify OPG, aiming to optimize the transport performance and mechanical

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On Pretreatment Experimental Study of High Strength

This thesis mainly studies the preprocessing of making high strength gypsum powder by using phosphogypsum. And bring out the new preprocessing of phosphogypsum from the traditional methods. And the new method improved the traditional 3 kinds of processing methods. After processing of phosphogypsum, strength and crystal morphology were compared to shown the better one.

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欢迎访问《建筑材料学报》编辑部网站!

2019-8-21  Effect of Chemical Pretreatment on the Properties of Phosphogypsum BasedComposite Cementitious Materials 投稿时间:2019-08-21 修订日期:2019-10-10 DOI: 103969/j.issn.1007 9629202001030 中文关键词: 磷石膏 复合胶凝材料 力学性能 化学预处理

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A facile approach for large-scale recovery of ...

The calcination treatment for recycling phosphogypsum (PG) is very promising, which can transform PG into a binder material and remove harmful impurities. To effectively recycle and reutilize PG, the influence of calcination temperatures on the properties of calcined and hydrated PG with and without pretreatment should be investigated.

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磷化工 - 中国五环工程有限公司

Phosphogypsum pretreatment unit 1 × 1 million tons / year Cement retarder plant 1 ×0.3 million tons /a Gypsum powder plant 1 × 0.6 million tons /a Modified gypsum partition board device 1 × 4 million square meters / a Self Leveling gypsum plant 1 × 0.2 在建

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Investigation on extracellular polymeric substances ...

2018-10-1  Phosphogypsum (PG, generally containing high content of Ca, Si and Al) released in the wet producing process of phosphoric acid is a solid industrial waste with a mineral structure (Rashad, 2014). Lin et al. (2015) have mentioned that a novel flocculant combined with silicon, aluminum, iron and starch is recognized to be efficient in improving ...

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Hydrothermal Pre-Treatment Process of Phosphogypsum

2020-10-13  Volha Yahorava, Eugene Lakay, and Wilma Clark, "Hydrothermal Pre-Treatment Process of Phosphogypsum for Enhanced Rare Earths Recovery" in "Beneficiation of Phosphates VIII", Dr. Patrick Zhang, Florida Industrial and Phosphate Research Institute, USA

Read More
"Hydrothermal Pre-Treatment Process of Phosphogypsum

Phosphogypsum (PG) is an industrial waste of phosphoric acid (H3PO4) production from phosphate ore by sulphuric acid (H2SO4) digestion, commonly known as the “wet acid” process. Phosphate rock often contains some valuable rare earth elements (REE) and it is well-established that from 70% to 85% of REE originally present in the phosphate rock end up in the PG, with an average REE content of ...

Read More
Effects of impurities in phosphogypsum and pre-treatment ...

Phosphogypsum is a solid waste generated in phosphoric acid production. Currently, a large number of phosphogypsum are discarded without any treatment, leading to considerable land occupation and ...

Read More
On Pretreatment Experimental Study of High Strength

This thesis mainly studies the preprocessing of making high strength gypsum powder by using phosphogypsum. And bring out the new preprocessing of phosphogypsum from the traditional methods. And the new method improved the traditional 3 kinds of processing methods. After processing of phosphogypsum, strength and crystal morphology were compared to shown the better one.

Read More
欢迎访问《建筑材料学报》编辑部网站!

2019-8-21  Effect of Chemical Pretreatment on the Properties of Phosphogypsum BasedComposite Cementitious Materials 投稿时间:2019-08-21 修订日期:2019-10-10 DOI: 103969/j.issn.1007 9629202001030 中文关键词: 磷石膏 复合胶凝材料 力学性能 化学预处理

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Investigation on extracellular polymeric substances ...

Modified phosphogypsum (MPG) was developed to improve dewaterability of sewage sludge, and dewatering performance, properties of treated sludge, composition and morphology distribution of EPS, dynamic analysis and multiple regression model on bound water

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Development and Application of Phosphogypsum in

2019-1-23  phosphogypsum, the pretreatment technology and improved production process will be the future focus of research. Keywords Phosphogypsum, Pretreatment Technology, Application, Plasterboard

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Decomposing properties of phosphogypsum with iron

Phosphogypsum is a solid industry by-product generated when sulphuric acid is used to process phosphate ore into fertiliser. Phosphogypsum stacks without pretreatment are often piled on the land surface or dumped in the sea, causing significant environmental damage. This study examined the reaction characteristics of phosphogypsum, when ...

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磷石膏预处理及制备建筑石膏的研究-【维普期刊官网】- 中文 ...

关键词 磷石膏 预处理 杂质 脱水参数 性能 phosphogypsum pretreatment impurities dehydration parameter performance 分类号 TQ177.375 [化学工程—硅酸盐工业] 引文网络 相关文献 节点文献 二级参考文献 29 参考文献 6 共引文献 146 同被引 ...

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张泽强-资源与安全工程学院、兴发矿业学院 - wit.edu.cn

2018-2-27  Research progress on pretreatment andcomprehensive utilization of phosphogypsum. Conservation and Utilization ofMineral Resource, 2019,8(4):19 ~ 25. ( 2 ) ShaoYixin, ZhangZeqiang, Huang Chaode, Sun Hualin. Research on influencing factors ofindustrial

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Hydrothermal Pre-Treatment Process of Phosphogypsum

2020-10-13  Volha Yahorava, Eugene Lakay, and Wilma Clark, "Hydrothermal Pre-Treatment Process of Phosphogypsum for Enhanced Rare Earths Recovery" in "Beneficiation of Phosphates VIII", Dr. Patrick Zhang, Florida Industrial and Phosphate Research Institute, USA

Read More
"Hydrothermal Pre-Treatment Process of Phosphogypsum

Phosphogypsum (PG) is an industrial waste of phosphoric acid (H3PO4) production from phosphate ore by sulphuric acid (H2SO4) digestion, commonly known as the “wet acid” process. Phosphate rock often contains some valuable rare earth elements (REE) and it is well-established that from 70% to 85% of REE originally present in the phosphate rock end up in the PG, with an average REE content of ...

Read More
Decomposing properties of phosphogypsum with iron

Phosphogypsum is a solid industry by-product generated when sulphuric acid is used to process phosphate ore into fertiliser. Phosphogypsum stacks without pretreatment are often piled on the land surface or dumped in the sea, causing significant environmental damage. This study examined the reaction characteristics of phosphogypsum, when ...

Read More
On Pretreatment Experimental Study of High Strength

This thesis mainly studies the preprocessing of making high strength gypsum powder by using phosphogypsum. And bring out the new preprocessing of phosphogypsum from the traditional methods. And the new method improved the traditional 3 kinds of processing methods. After processing of phosphogypsum, strength and crystal morphology were compared to shown the better one.

Read More
Development and Application of Phosphogypsum in

2019-1-23  phosphogypsum, the pretreatment technology and improved production process will be the future focus of research. Keywords Phosphogypsum, Pretreatment Technology, Application, Plasterboard

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阴离子聚丙烯酰胺(APAM)和聚二甲基二烯丙基氯化铵(HCA ...

2020-11-5  Investigation on extracellular polymeric substances, sludge flocs morphology, bound water release and dewatering performance of sewage sludge under pretreatment with modified phosphogypsum[J]. Water Research, 142: 337-346.

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On Pretreatment Experimental Study of Yunnan

This paper studied effect of different pretreatment process on Yunnan phosphorus building gypsum strength and crystal morphology such as washing method, lime neutralization method, flotation method and Hans method. A lots experiment result indicated that basic properties of phosphorus building gypsum of different pretreatment methods could satisfy related building materials products technology ...

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Water resistance of composite binders containing ...

2015-5-5  Six pretreatment processes in total were conducted on phosphogypsum using autoclaving and calcination. Three parameters of the CBPG mortars were comparatively studied to evaluate their water resistance: the ratio of the compressive strength in the wet-saturated state to that in the dry state (W/D); weight loss after static water attack (WLSW ...

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杨家宽----现任华中科技大学教授(华中学者)、博士生导师 ...

2017-4-1  Size separation of pretreatment and alumina recovery from Bayer red mud. XXV Interantional Mineral Processing Congress (IMPC) 2010 Proceedings, Brisbane, Queensland, Australia, 6-10 September, 2010. (杨家宽、刘万超参会,并作分会场报告) [29] *.

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柠檬酸浸法预处理对磷石膏充填体性能的影响

2019-6-28  Li Yongjing,Yue Weiqi,Pan Wei,et al.Study on influence of pretreatment process on phosphogypsum and slag cement [J]. Non-Metallic Mines,2018,41(1): 15-17. 9 Liu Y K,Zhang Q L,Chen Q S,et al. Utilization of water-washing pre-treated 10

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