the hazards of fluorogypsum
Determination of a Suitable Formulation of Fluorogypsum, …
Due to the high cost of limestone as an oyster cultch material in the State of Louisiana, an economical, locally available material is needed to provide a binding substrate for the oysters. Fluorogypsum (CaSO4·H2O), a by-product of the hydrofluoric acid production process, is a low cost, locally available material that is currently being utilized as road …
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Activation of fluorogypsum for building materials
Introduction Fluorogypsum (FG), a waste of hydrofluoric acid industry, has been studied for use as building material . Water-resistant binding materials can be …
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Study on the proportion of paste filling materials based …
The industrial waste fluorogypsum (FG), which has adverse effects on people and the environment, is composed of calcium sulfate (CaSO 4), calcium fluo-ride (CaF
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Fluorogypsum: Old base materials causing cracks in …
Fluorogypsum is a by-product of hydrofluoric acid produced by Honeywell in Geismar along La. 30. Pisolite and red mud are by-products from the refinement of bauxite ore into alumina, a material that is turned into aluminum. ... saying then that it posed "no radiological hazard from use in this manner." ...
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Mechanical Properties and Performance under Laboratory …
DOI: 10.1061/(asce)mt.1943-5533.0003240 Corpus ID: 218962771; Mechanical Properties and Performance under Laboratory and Field Conditions of a Lightweight Fluorogypsum-Based Blend for Economic Artificial-Reef Construction
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What is Hazard? Types Of Hazards, Examples
Ergonomic hazards can cause musculoskeletal disorders such as carpal tunnel syndrome or back injuries. Workers should be aware of potential ergonomic hazards in their work environment and take …
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Effect of Polycarboxylate Admixture on the Performance of Fluorogypsum
The study explores the influence of polycarboxylate admixture (PCE) on fluorogypsum-based self-leveling material (FSLM) performance. Wev conducted an array of tests to assess workability and ...
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Microstructure and properties of the binder of fly ash-fluorogypsum …
Given the issues related to poor hydration activity, long setting time and low early strength of industrial by-product fluorogypsum (FG), the composite modifiers (Na 2 SO 4 and NaNO 2) were utilized to enhance its reactivity.The investigation of the mechanism involved the utilization of contemporary analytical methods, including X-ray …
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Applied Sciences | Free Full-Text | Effect of Polycarboxylate
Feature papers represent the most advanced research with significant potential for high impact in the field. A Feature Paper should be a substantial original Article that involves several techniques or approaches, provides an outlook for future research directions and describes possible research applications.
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Study on the proportion of paste filling materials based …
RESEARCH ARTICLE Study on the proportion of paste filling materials based on fluorogypsum Wang Chun1,2,3, Li Xin-ru2, Cheng Lu-ping ID 2*, Xiong Zu-qiang2, Zhan Shuai-fei2 1 Sinosteel MaAnShan General Institute of Mining Research Co., LTD, Maanshan Anhui, China, 2 School of Energy Science and Engineering, Henan …
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Study on the proportion of paste filling materials based on fluorogypsum
A new type of paste filling material was created using fluorogypsum, a byproduct of hydrofluoric acid, as the raw material to address the issue of the filling material's high cost.
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A comprehensive overview of fibre-reinforced gypsum-based composites
Fluorogypsum is a by-product of hydrofluoric acid production. China discharges approximately 1 million t of fluorogypsum every year, and the accumulation of fluorogypsum has reached 400 million t [5]. Red gypsum is largely discharged in the sulphate process that treats waste sulphuric acid with lime or limestone [10].
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Durable Cost Effective Building Materials from Waste Fluorogypsum …
The sample of fluorogypsum was collected from M/s Navin Fluorine International, Bhestan, Gujarat, India. It was analyzed for chemical composition as per IS: 1288 10 and as per standard test procedures cited by Scott, et.al. 11-12.The fluorogypsum contained Fluoride 1.32%, SiO 2 + insoluble in HCl 0.65%, Al 2 O 3 + Fe 2 O 3 0.65%, CaO …
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Study on the proportion of paste filling materials based on fluorogypsum
A new type of paste filling material was created using fluorogypsum, a byproduct of hydrofluoric acid, as the raw material to address the issue of the filling material's high cost. The effects of five factors, including gangue, fly ash, fluorogypsum, lime content, and mass concentration on the physi …
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Fluorogypsum: Old base materials causing cracks in …
Wilma Subra, technical advisor for the Louisiana Environmental Action Network, a nonprofit advocacy group, said such contaminants, especially as a road base, could present a …
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Effects of 1,2,3-Propanetricarboxylic acid on the hydration …
Aiming at the issues of poor hydration activity, long setting time, and low early strength in industrial by-product fluorogypsum (FG), 1,2,3-propenyltricarboxylic …
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Effects of Fluorogypsum and Quicklime on Unconfined
Fluorogypsum (FG), a by-product obtained during the production of hydrofluoric acid, satisfies these conditions, as it is capable of binding granular materials. Approximately 894,000 metric tons are annually produced in the U.S. However, data on the mechanical strength of clay–FG mixtures are unavailable. In this study, we conducted ...
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Development of new pH-adjusted fluorogypsum-cement-fly …
The proposed fluorogypsum-based blend is durable in water and has a lower weight and lower cost than ordinary concrete. A preliminary investigation of strength and durability properties of this new construction material is also presented. ... This large accumulation of industrial by-products represents a significant environmental hazard, pro⇑ ...
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Microstructure and properties of the binder of fly ash-fluorogypsum …
The hydration process, mortar microstructure, and properties of the binder consisting of fly ash, fluorogypsum, and Portland cement were investigated with X-ray diffraction, differential thermal analysis, scanning electron microscopy with energy dispersing spectrum, and mercury intrusion porosimetry. Its major hydrates are hydraulic …
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Study on activation of fluorogypsum by sodium sulfate and …
Abstract. Given the issues related to poor hydration activity, long setting time and low early strength of industrial by-product fluorogypsum (FG), the composite modifiers (Na 2 SO 4 and NaNO 2) were utilized to enhance its reactivity.The investigation of the mechanism involved the utilization of contemporary analytical methods, including X-ray diffraction …
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Effects of 1,2,3-Propanetricarboxylic acid on the hydration …
In order to explore the influence of the types of waste gypsum on the properties of alkali slag cement, fluorogypsum (FG) and flue-gas desulfurization (FGD) gypsum were comparatively investigated.
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Activation of fluorogypsum for building materials
Introduction Fluorogypsum (FG), a waste of hydrofluoric acid industry, has been studied for use as building material . Water-resistant binding materials can be produced from phosphogypsum, slag, cement, fly ash and lime sludge. Impurities (fluoride) present in FG may interfere with setting and strength development of plaster/ building …
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Investigation of properties of fluorogypsum-slag …
In India about 4.0 million tonnes of fluorogypsum, a cardinal waste material of the hydrofluoric acid industry, is produced per annum and poses the problem of disposal and pollution hazards as it sets too slowly to form any useful building materials, thus creating an environmental nuisance. The literature survey revealed that not much work …
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Microstructure and properties of the binder of fly ash-fluorogypsum …
Fluorogypsum, fly ash, Portland cement, and alum were blended. The mixture was ground in a ball mill to a fineness similar to that of Portland cement. The mortars were mixed by machine for 3 min, cast into 40 × 40 × 160 mm moulds for the strength test or 40 × 40 × 140 mm moulds with 4-mm diameter steel limiting frame for …
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Jungyeon Jang
Effects of Fluorogypsum and Quicklime on Unconfined Compressive Strength of Kaolinite. J Jang, J Jang, M Barbato, MT Gutierrez-Wing, KA Rusch, J Jung. Journal of Coastal Research 114 (SI), 126-130, 2021. 3: ... Journal of the Korean Society of Hazard Mitigation 17 (6), 367-373, 2017. 1: 2017:
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Mechanical Properties and Performance under Laboratory …
Fluorogypsum (FG), a by-product obtained during the production of hydrofluoric acid, satisfies these conditions, as it is capable of binding granular materials. Approximately 894,000 metric tons ...
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The effect of fluorogypsum on the properties of high-water …
Fluorogypsum is an industrial solid waste produced in the production of hydrofluoric acid. Its main composition is type II CaSO 4 . In order to explore the influence of fluorogypsum (F1, lime content of 3%; F2, lime content of 5%) on the performance of high water filling materials, the influence of fluorogypsum content on the setting time and 1 ...
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Fluorogypsum full data sheet
FLUOROGYPSUM is also known as anhydrous calcium sulphate USES FLUOROGYPSUM can advantageously replace traditional cement as a binder for screed mortars. It is widely used in floor screen applications because of its numerous advantages: better fluidity for self-levelling, greater dimensional stability, high mechanical strength and outstanding ...
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Effect of Polycarboxylate Admixture on the Performance …
Appl. Sci. 2023, 13, 12802 2 of 15 cement-based self-leveling mortars possess excellent mechanical properties, they are prone to shrinkage and cracking. On the other hand, gypsum-based self ...
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Effects of Fluorogypsum and Flue-Gas Desulfurization …
In order to explore the influence of the types of waste gypsum on the properties of alkali slag cement, fluorogypsum (FG) and flue-gas desulfurization (FGD) gypsum were comparatively investigated. Moreover, the action mechanisms of FG and FGD gypsum on the properties of alkali slag cement were analyzed. The results show that …
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