Properties, Purification, and Applications of Phosphogypsum…
Phosphogypsum (PG) is a by-product produced during the wet process of phosphoric acid (H3PO4) production from natural phosphate rocks. Approximately 4–6 tons of PG is produced per ton of phosphoric acid production, where worldwide PG generation exceeds 300 million tons annually. The vast majority of produced PG is discarded irresponsibly, leading to …
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Experimental Study on Phosphogypsum Desilication by Flotation
Experimental Study on Phosphogypsum Desilication by Flotation[J]. Multipurpose Utilization of Mineral Resources, 2014, (6): 39-42. doi: 10.3969/j.issn.1000-6532.2014.06.010. Zhu Pengcheng, Wang Guodong, Zeng Bo. Experimental Study on …
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The effect of phosphate flotation wastes and phosphogypsum …
In this study, the effect of phosphates flotation wastes (PFW) and phosphogypsum (PPG) on organic biomass degradation, compost quality, and plant growth was examined. Our results showed that PFW and PPG improve composting mechanisms, accelerate organic substance degradation, and increase fertilizing elements (P2O5, K2O, MgO, CaO). The low …
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Staged purification of phosphogypsum using pH …
Phosphogypsum (PG) is an industrial by-product of the transformation of phosphate rocks. For decades, PG has been a source of environmental concern due to the massive amount produced thus far, i.e., 7 billion tons, with a current production rate of 200–280 million tons per year. Phosphate minerals contain various impurities that precipitate and …
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The study on the effect of flotation purification on the …
Phosphogypsum (PG) is a massive industrial solid waste. In this paper, PG was purified by flotation method, and α-hemihydrate gypsum (α-HH) was prepared by the …
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Novel ethylbenzyl and hydroxyethyl quaternary ammonium …
Phosphoric acid is one of the important strategic raw materials [1]. Phosphogypsum (PG) is the main by-product generated during the production process of phosphoric acid, containing various harmful impurities such as SiO 2, organic matter, and fluorine [2].Statistics indicate that traditional wet-process phosphoric acid production generates 4.5 to 5.5 tons of PG per ton of phosphoric …
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A flotation combined extraction process for improving
Download Citation | A flotation combined extraction process for improving the whiteness of phosphogypsum | Every year, the production of industrial phosphoric acid generates more than 100 Tg of ...
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Research advances in phosphogypsum flotation …
DOI: 10.1016/j.seppur.2024.129244 Corpus ID: 271943183; Research advances in phosphogypsum flotation purification: Current status and prospects @article{JiaResearchAI, title={Research advances in phosphogypsum flotation purification: Current status and prospects}, author={Wenke Jia and Jingchao Li and Changpan Shen and Guosheng Li and Huiyong Li and …
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Selective flotation separation of gypsum and quartz using …
The selective flotation separation of gypsum and quartz in phosphogypsum (PG) is an urgent problem that is very important for the high-value utilization of PG. In the work, dodecyl amine hydrochloride (DH) was introduced as a collector for the selective flotation separation of gypsum and quartz.
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CN111545342B
The invention discloses a method for purifying phosphogypsum based on a flotation column and a gravity column with fillers, which comprises the following steps: the purification effects of phosphogypsum decoloration, whitening, phosphorus reduction and impurity reduction are achieved by utilizing the differences of density, granularity and surface chemical properties …
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An innovative method for simultaneous stabilization/solidification of
Phosphogypsum (PG) contains plenty of PO 4 3− and F − and some heavy metals. Phosphorus ore flotation tailings (POFT) mainly consist of dolomite (CaMg(CO 3) 2) and calcium fluophosphate (Ca 5 (PO 4) 3 F), and it also contain other soluble impurities. Separate storage of PG and POFT could seriously damage the ecological environment.
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Simple and efficient method for purification and recovery of …
The selective flotation separation of gypsum and quartz in phosphogypsum (PG) is an urgent problem that is very important for the high‐value utilization of PG.
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Comparative Study of α-Hemihydrate Preparation from Phosphogypsum …
Phosphogypsum (PG) is a massive industrial solid waste. In this paper, PG was purified by flotation method, and α-hemihydrate gypsum (α-HH) was prepared by the autoclaving method. The morphology of α-HH was adjusted by adding different doses of Maleic acid and Aluminium sulfate. The results sh...
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Novel ethylbenzyl and hydroxyethyl quaternary ammonium …
Phosphoric acid is one of the important strategic raw materials [1].Phosphogypsum (PG) is the main by-product generated during the production process of phosphoric acid, containing various harmful impurities such as SiO 2, organic matter, and fluorine [2].Statistics indicate that traditional wet-process phosphoric acid production generates 4.5 to 5.5 tons of PG per ton of phosphoric …
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Reuse of phosphogypsum and phosphorus ore flotation …
Phosphogypsum (PG) and phosphorus ore flotation tailings (POFT) are generated in the phosphorus chemical industry, where stockpiling PG and POFT causes serious pollution to the environment. In this study, a novel adsorbent material (i.e., PGTA) was prepared in proportion to PG, POFT and starch to remove phosphate from the aqueous solution.
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Reuse of phosphogypsum and phosphorus ore flotation …
Request PDF | On Mar 1, 2023, Wei Jiang and others published Reuse of phosphogypsum and phosphorus ore flotation tailings as adsorbent: The adsorption performance and mechanism of phosphate | Find ...
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Simple and efficient method for purification and recovery of …
The flotation separation of apatite and dolomite poses a long-standing challenge in the mineral processing industry because of their similar physicochemical properties. ... Phosphogypsum (PG) is a solid waste generated during the production of wet -process phosphoric acid. The silicon and phosphorus impurities in PG greatly affect its resource ...
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Flotation purification of waste high-silica phosphogypsum
Herein, a typical high-silica phosphogypsum waste was purified by a new "reverse-direct flotation" method. The organic matters and fine slimes were removed by reverse …
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Effect of Flotation Purification on Preparation of …
Phosphogypsum produced by phosphorus chemical industry is the bulk industrial solid waste. The impurities would reduce the performance of β−hemihydrate gypsum that was prepared from phosphogypsum. In this study, phosphogypsum was purified by flotation method, and the performance of β−hemihydrate gypsum prepared from phosphogypsum before and …
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Research on the Flotation Mechanism of Microemulsion …
Phosphogypsum is an industrial byproduct that is limited in its high-value application due to the presence of dyeing impurities (such as organic matter and carbon black). The flotation method has been verified to be effective in separating these dyeing impurities from gypsum. In this study, microemulsion was used as the collector method of dyeing impurities for …
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Roles of various composts based on phosphate flotation …
The use of composts promotes plant growth and physiology as a promising sustainable strategy. The main objective of this study is to evaluate the impact of phosphate flotation waste (PFW) and phosphogypsum (PPG) composts on the growth and physiology of tomato plants under two water regimes (40% field capacity (FC) and 80% FC). The experiment …
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A flotation combined extraction process for improving …
In this study, we report a flotation combined extraction process for enhancing the whiteness of PG. Before extraction, a large amount of SiO 2 and organic matter adhering to …
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Comparative analysis of colloid-mechanical …
Phosphogypsum is a kind of industrial byproduct mainly from the production process of wet-process phosphoric acid. Each ton of phosphoric acid produced will produce 5–5.5 tons of phosphogypsum [1], [2].The global phosphogypsum stockpile has exceeded 7 billion tons, the annual output is about 0.2 to 0.3 billion tons, and the utilization rate is less than 15% [3], [4].
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Phosphogypsum flotation purification method
The invention discloses a method for flotation and purification of phosphogypsum, and belongs to the field of comprehensive utilization of solid waste. The method comprises the following steps: 1) Adding an appropriate amount of water into phosphogypsum, adjusting the phosphogypsum to a certain concentration, and fully stirring; 2) Adding an alcoholic solution of organic silicon …
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Desilication and purification of phosphogypsum waste by …
Phosphogypsum (PG) is the main by-product of wet phosphoric acid production and has seriously polluted the environment. In this study, PG was purified by reverse flotation using …
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Effect of Flotation Purification on Preparation of …
In this study, phosphogypsum was purified by flotation method, and the performance of β−hemihydrate gypsum prepared from phosphogypsum before and after …
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Flotation purification of waste high-silica phosphogypsum
High-silica phosphogypsum (PG) is a kind of industrial by-product with great utilization potential. However, it is difficult to reuse PG directly due to the related gangue minerals (e.g., SiO 2), and thus efficient purification is required to allow its further applications.Herein, a typical high-silica phosphogypsum waste was purified by a new "reverse-direct flotation" method.
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A flotation combined extraction process for improving …
In order to improve the whiteness of phosphogypsum and reduce the cost, the advantages of flotation and extraction can be innovatively combined (Wang, 2020; Singh, 1993; Cao, 2022). In this study, we report a flotation combined extraction process for enhancing the whiteness of PG. Before extraction, a large amount of SiO 2
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The effect of phosphate flotation wastes and phosphogypsum …
The main objective of this study is to evaluate the impact of phosphate flotation waste (PFW) and phosphogypsum (PPG) composts on the growth and physiology of tomato plants under two water regimes ...
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Optimization of wet-process phosphoric acid for high-quality phosphogypsum
flotation gypsum, and 65 should be selected as the suitable floc flotation tempe rature. Fig. 2. Effect of temperature on grade, recovery, and whiteness (a), and pollution components (b) of the ...
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