This study contributes to sustainable construction practices by exploring the use of phosphogypsum, a commonly discarded byproduct, in the production of recycled aggregates. Addressing both …
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Phosphogypsum (PG) waste is a by-product generated from wet-process phosphoric acid (H 3 PO 4) manufacturing during phosphate rock decomposition.Worldwide, the annual production of PG ranges between 100 and 300 million tons, with only a few quantities utilized in several application domains (about 15%), the …
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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 ...
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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.
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Phosphogypsum is a solid waste with great environmental stockpile pressure produced by the wet production of phosphoric acid. Although there are various methods to purify and utilize phosphogypsum, the means for environmentally friendly, low energy consumption, and high value-added utilization still need to be further explored. …
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Phosphogypsum (PG) is a massive industrial solid waste. In this paper, PG was puried by otation ... Flotation experiment. ˜e otation test rst weighed 200 g of PG raw ore for ball …
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In this study, we investigated a coarse phosphogypsum containing 49.63% SO3, 41.41% CaO, 10.68%, 4.47% SiO2, 1.28% P2O5, 0.11% F, CaSO4·2H2O purity of 80.65%, and whiteness of 27.68. …
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Phosphogypsum (PG) is a solid waste product generated during wet-process phosphoric acid production. ... The study on the effect of flotation purification …
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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 …
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The study on the effect of flotation purification on the performance of α-hemihydrate gypsum prepared from phosphogypsum Article Open access 07 January 2022 Introduction
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The methods such as physical flotation, purification by washing, lime neutralization and modification, and calcination [9,10] are included in the existing treatment processes for PG. Jinming et al. [] employed reverse flotation to eliminate a substantial amount of organic matter and fine sludge from PG, subsequently employing positive …
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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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Phosphogypsum (PG) is a radioactive industrial by-product produced in large quantities when processing phosphate ores into fertilizers. With rapid growth of high concentration phosphate and compound fertilizers production in China, PG production is increasing every year. Phosphogypsum is usually stored in such a way that it not only …
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Phosphogypsum is a by-product originated from wet-process phosphoric acid, which contains some impurities such as soluble phosphorus, soluble fluorine, some salts, heavy metals and organic compounds, which lead to difficulty to be used. Jillion phosphogypsum accumulated not only occupies land, pollutes the circ。umjacent …
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DOI: 10.1016/j.jenvman.2022.115824 Corpus ID: 251339939; Flotation purification of waste high-silica phosphogypsum. @article{Fang2022FlotationPO, title={Flotation purification of waste high-silica phosphogypsum.}, author={Ji Fang and Yingyong Ge and Zhijie Chen and Baolin Xing and Shenxu Bao and Qing Yong and …
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Phosphogypsum (PG) waste is a by-product generated from wet-process phosphoric acid (H 3 PO 4) manufacturing during phosphate rock …
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Keywords Manure waste · Composting · Phosphate flotation waste · Phosphogypsum · Chickpea plant Introduction Composting is one of the best-known techniques used in biological stabilization of organic wastes, which can then be used as a good source of nutrients and as soil conditioners in agricultural systems [1]. Composting is labor ...
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The P 2 O 5 and F are found in three forms: (i) on the surface of phosphogypsum crystals with water-soluble compounds (H 3 PO 4, Ca(H 2 PO 4) 2 ·H 2 O, NaF); (ii) substituted in the lattice of phosphogypsum crystal (effectively solid solutions of CaHPO4·2H 2 O or Na 2 SiF 6) in PG; and (iii) as insoluble compounds (Ca 3 (PO 4) …
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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 …
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A simple and efficient approach of high-speed stirring scrubbing, reverse flotation and direct flotation was adopted to the purification of phosphogypsum (PG), and KH and dodecylamine hydrochloride (DH) were first used as the collectors of reverse and direct flotation, respectively. X-ray diffractometer (XRD), thermal gravimetric analyser (TGA), …
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Phosphogypsum (PG), the main industrial by-product of phosphate fertilizer industry, primarily consists of calcium sulfate dihydrate. However, it contains various impurities with variable quantities depending on the origin of the phosphate rock. These impurities can restrict the reuse of phosphogypsum as a secondary primary resource.
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Phosphogypsum is a by-product of phosphoric acid industrial production, and its stacking volume is increasing year by year, which brings a great threat to the environment and agricultural safety. The way of comprehensive utilization of phosphogypsum was described, and the mechanism of phosphogypsum producing cement, preparing …
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Phosphogypsum (PG) wastes, including solid-state PG and liquid-state PG leachate, are industrial byproducts generated during the production of phosphoric acid. It …
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The PG was taken from Hubei Yihua Fertiliser Co., Ltd (Yichang city, China) and dried at 45 °C for three days. The chemical composition and X-ray diffraction (XRD) pattern of PG are presented in Table 1-PG and Fig. 1-B, which indicate that the main composition of PG is CaSO 4 ·2H 2 O. The scanning electron microscopy (SEM) …
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The specific procedure was as follows: 2 g of PG concentrate (purified phosphogypsum by flotation), solid–liquid ratio 1:1 49, was weighed and hydrothermally …
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The flotation reagents used in the whitening and purification of PG are comprehensively summarized. The flotation pretreatment and coupling process are also reviewed, which …
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The way to successfully upgrade a phosphate ore is based on the full understanding of its mineralogy, minerals surface properties, minerals distribution and liberation. The conception of a treatment process consists of choosing the proper operations with an adequate succession depending on the ore properties. Usually, froth flotation …
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The flotation reagents used in the whitening and purification of PG are comprehensively summarized. The flotation pretreatment and coupling process are also reviewed, which can be used for deep classification of PG for impurities removal. The proposed potential focus direction is based on the current status of PG flotation purification research.
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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 …
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Phosphogypsum (PG) is a by-product produced during the wet process of phosphoric acid (H3PO4) production from natural phosphate rocks. Approximately 4–6 …
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Phosphogypsum (PG), a byproduct during the phosphoric acid production process, also known as the wet process, contains complex and diverse impurities, resulting in low utilization and considerable accumulation. This leads to a massive waste of land resources and a series of environmental pollution problems. Given the current urgent …
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In this study, the NaHCO 3 synergistic electrokinetic method was used to remove F, P, and Mn from phosphate ore flotation tailings (PTs). First, using PHREEQC simulation calculations, the occurrence forms of P, F, and Mn in the PTs were determined. Thereafter, under various electrokinetic treatment conditions, the variation trends …
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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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Phosphogypsum, as a byproduct of wet-process phosphoric acid reaction, has caused many environmental pollution problems. To improve the property and purity of phosphogypsum in the wet-process phosphoric …
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The types of impurities in phosphogypsum and their pretreatment methods were expounded, phosphorus and fluorine impurities can be removed by water washing, acid-base neutralization, sieving, calcination, etc., and organic impurities are removed by washing, flotation, calcination, aging, etc., sodium and potassium alkali metal salt …
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