Self-anticorrosion for the combustion tower of heat recovered thermal process phosphoric acid production

Ma, Hang; Feng, Xiao; Zeng, Bo

doi:10.1016/j.psep.2018.07.008

Cited by 22 publications

(6 citation statements)

References 21 publications

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“…3,4 Different approaches such as thermal and wet processes are mainly employed to produce phosphoric acid from phosphate ores (PO). 5,6 The wet process is by far the most common route and the acid can be used in phosphate fertilizer production. 7 In such a hydrometallurgical process, leaching is typically the first step.…”

Section: Introductionmentioning

confidence: 99%

Leaching of phosphate ores with lower dissolution of metallic impurities: the dual role of sodium oleate

et al. 2023

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Section: Introductionmentioning

confidence: 99%

Leaching of phosphate ores with lower dissolution of metallic impurities: the dual role of sodium oleate

et al. 2023

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“…2. Wet process phosphoric acid production method [11] 85 % of the phosphoric acid produced via the wet process is utilized in the fertilizer industry [9,10].…”

Section: Introduction *mentioning

confidence: 99%

An Evaluation of Phosphogypsum (PG) -Derived Nanohydroxyapatite (HAP) Synthesis Methods and Waste Management as a Phosphorus Source in the Agricultural Industry

Avşar¹,

Gezerman²

2023

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As a raw material, phosphorus availability in agriculture has been a critical concern in terms of phosphate rock consumption related to a price-dependent supply-demand chain. Novel approaches have been proposed for alternative phosphorus sources in agricultural applications. Although nano-hydroxyapatite (nHA) is a commonly used bioceramic material, its utilization as an alternative phosphorus fertilizer is an emerging field. Phosphogypsum (PG), a by-product of wet process phosphoric acid production, is a promising raw material for nHA production. With an approximate 300 Mton annual accumulation rate of PG puts pressure on the research for introducing alternative strategies for the resource utilization of legacy PG piles in an environment-friendly and cost-efficient manner. Valorization of PG as the calcium and phosphorus precursor in nHA production would both provide an efficient waste management strategy and low-cost raw material. This study gives a brief review of the various synthesis routes on PG-derived nHA and criticizes nHA utilization as a phosphorus fertilizer.

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“…Phosphoric acid is an important industrial basic product, which has been widely used in the industries of fertilizer and washing daily necessities. − Currently, the thermal process and the wet process are the main processes for phosphoric acid production . The phosphoric acid produced in the thermal process has less impurities and is mainly used for the preparation of high-class phosphate products . However, its high commercial cost limited the application of thermal process .…”

Section: Introductionmentioning

confidence: 99%

“…5 The phosphoric acid produced in the thermal process has less impurities and is mainly used for the preparation of high-class phosphate products. 6 However, its high commercial cost limited the application of thermal process. 7 Therefore, the wet process has become the main process of phosphoric acid production.…”

Section: Introductionmentioning

confidence: 99%

Study on Controlling the Dissolution of Calcium Dihydrogen Phosphate Using Ternary Phase Diagrams to Improve the Production Process of Phosphoric Acid

Chen

Zheng

Tang

et al. 2022

Ind. Eng. Chem. Res.

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Phosphogypsum is a solid byproduct in the production of phosphoric acid in the traditional sulfuric acid process, and its output has caused a huge economic and environmental burden. In order to avoid the production of phosphogypsum and efficiently produce phosphoric acid, a novel study on the decomposition of phosphate ore by phosphoric acid was carried out. The influence of parameters on the decomposition efficiency of phosphate ore were explored systemically using response surface methodology (RSM). The concentration of phosphoric acid was the most important factor affecting the decomposition efficiency of phosphate ore in the phosphoric acid process, followed by reaction temperature and reaction time. The dissolution behavior of Ca(H 2 PO 4 ) 2 was studied using phase diagrams of ternary systems of P 2 O 5 −CaO−H 2 O. When the ratio of the practical doses of phosphoric acid to the theoretical/ stoichiometric doses of phosphoric acid (Ratio P/T ) was 3.3 and the phosphoric acid concentration (calculated as P 2 O 5 ) was 35%, the decomposition efficiency of phosphate ore reached 98.34%, and the proportion of Ca(H 2 PO 4 ) 2 dissolved in the leach liquor reached 98.54%. A high proportion of dissolved Ca(H 2 PO 4 ) 2 reduced the loss of phosphorus, and the generation of clean gypsum was obtained under these experimental conditions. Clean gypsum produced by the phosphoric acid process is regular long columnar crystal and has few impurities. This study provides an efficient strategy for the production of phosphoric acid by controlling the dissolution of Ca(H 2 PO 4 ) 2 , while avoiding the generation of phosphogypsum.

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Self-anticorrosion for the combustion tower of heat recovered thermal process phosphoric acid production

Cited by 22 publications

References 21 publications

Leaching of phosphate ores with lower dissolution of metallic impurities: the dual role of sodium oleate

Leaching of phosphate ores with lower dissolution of metallic impurities: the dual role of sodium oleate

An Evaluation of Phosphogypsum (PG) -Derived Nanohydroxyapatite (HAP) Synthesis Methods and Waste Management as a Phosphorus Source in the Agricultural Industry

Study on Controlling the Dissolution of Calcium Dihydrogen Phosphate Using Ternary Phase Diagrams to Improve the Production Process of Phosphoric Acid

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