Fluorogypsum calcite equipment
Use of slurry fluorogypsum (FG) with controlled pH
2018年2月28日 This study investigates the mechanical and durability properties of blends made of fluorogypsum (FG) with the pH adjusted by using controlled amounts of circulating fluidized 2023年5月2日 In view of the poor hydration activity and difficult utilization of industrial byproduct fluorogypsum, the effects of potassium carbonate (K 2 CO 3) and potassium bicarbonate Comparative study on modifications of pHadjusted fluorogypsum 2024年5月15日 This study focuses on the effect of Na 2 SO 4 and NaNO 2 on the modification of fluorogypsum, and the performance of the modified fluorogypsum in construction Study on activation of fluorogypsum by sodium sulfate and 2024年3月18日 针对工业副产氟石膏(FG)水化活性差、凝结时间长、早期强度低等问题,采用复合改性剂(NaSO和NaNO)来提高其反应活性。 该机制的研究涉及利用现代分析方法,包 硫酸钠和亚硝酸钠活化氟石膏的研究,Science of the Total
The activation of fluorgypsum with slag activator and the
2011年11月10日 Through the setting time testing of fluorgypsum with NaOH, Na 2 SO 4 and NaF, the least activator dosage were all 1% And the cementitious material over 80% of 2023年6月8日 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 Study on the proportion of paste filling materials based 2023年6月5日 Fluorogypsum (FG), an acidic byproduct 77 (pH = 23) generated by the industrial manufacturing of hydrofluoric acid (Chesner et al 1998), is 78 commonly stockpiled UC Davis eScholarshipAbstract: This research aims to develop a concretelike material for underwater construction applications by using fluorogypsum (FG, an industrial byproduct of hydrofluoric acid Use of a lowcost concretelike fluorogypsumbased blend
Activation of fluorogypsum for building materials Request
2009年2月1日 Fluorogypsum, a waste product of hydrofluoric acid industry, has been blended with Ca (OH) (2) and chemical additives followed by fine grinding to give plaster/binder of low In this paper, microbial induced calcite precipitation (MICP) was adopted as a modifying technology for surface property enhancement of supersulfated cement (SSC) containing phosphogypsum (PG)Chemical composition of fluorogypsumA composition with 62% pHadjusted fluorogypsum, 35% fly ash, and 3% Portland cement was selected based on strength and volumetric expansion properties to conduct additional experimental studies to quantify its modulus of elasticity, Poisson’s ratio, setting times, density, void contents, and curing time effects on strength and volumetric Development of new pHadjusted fluorogypsumcementfly 2023年6月8日 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 Study on the proportion of paste filling materials
On thermal effects of early structure formation of fluorogypsum
2020年8月1日 The study explores the influence of polycarboxylate admixture (PCE) on fluorogypsumbased selfleveling material (FSLM) performance Wev conducted an array of tests to assess workability and 2018年9月10日 A composition with 62% pHadjusted fluorogypsum, 35% fly ash, and 3% Portland cement was selected based on strength and volumetric expansion properties to conduct additional experimental studies to quantify its modulus of elasticity, Poisson’s ratio, setting times, density, void contents, and curing time effects on strength and volumetric Development of new pHadjusted fluorogypsumcementfly 2021年11月27日 Science and Engineering, Henan Polytechnic University, Jiaozuo , China; * Correspondence: ; T el: +8618272732988(PDF) Effects of Fluorogypsum and FlueGas ResearchGate2023年6月8日 The effects of five factors, including gangue, fly ash, fluorogypsum, lime content, and mass concentration on the physical and mechanical properties of filling material were also examinedStudy on the proportion of paste filling materials based on fluorogypsum
Formulation of Sulphate Resistant Super Sulphated Cement
2015年6月1日 Present studies deal with the formulation of sulphate resistant super sulphated cement using flourogypsum (83 %), granulated blast furnace slag (10 %) and OPC (7%) by grinding and blending in a Journal of Physics: Conference Series PAPER OPEN ACCESS 2QWKHUPDOHIIHFWVRIHDUO\VWUXFWXUHIRUPDWLRQRIIOXRURJ\SVXP FRPSRVLWHELQGHU To cite this article: L A Anikanova et al 2020 J Phys: Conf Ser SVXP FRPSRVLWHELQGHU ResearchGate2021年6月1日 In the hydration process, it was observed that a low fluorogypsum content slightly accelerated the cement reactions, while the rubbertirepowder inhibited them Regarding the cementrubber mixture, the cementrubberfluorogypsum mixture had a recovery of 283 % in the compressive strength and 360 % in the modulus of elasticitySynergistic effects of rubbertirepowder and fluorogypsum Fluorogypsum Fluorogypsum is generated at the EI DuPont De Nemours Com pany, Inc, HF Plant in LaPorte, Texas The material is initially pro duced in the anhydrite form (CaS04) However, after neutralization with a lime slurry, the fluorogypsum will be converted primarily to the dihydrate form EXPERIMENTAL INVESTIGATIONEnvironmental Characteristics of ByProduct Gypsum
Development of new pHadjusted fluorogypsumcementfly
2018年9月10日 This paper develops a new lowcost construction material made of pHadjusted fluorogypsum, class C fly ash, and type II Portland cement The proposed fluorogypsumbased blend is durable in water 2022年3月1日 A composition with 62% pHadjusted fluorogypsum, 35% fly ash, and 3% Portland cement was selected based on strength and volumetric expansion properties to conduct additional experimental studies Microstructure and performances of sludge soil stabilized by 2016年11月30日 Fluorogypsum (FG) is a byproduct of hydrofluoric acid production In China, production of one ton of HF can produce four to five tons fluorogypsum Over 400 million tons of fluorogypsum have been generated by 2010 Most of the generated fluorogypsum is transported to waste dumps stacks requiring large amounts of land and harming the environmentMechanical properties and hydration mechanisms of high A composition with 62% pHadjusted fluorogypsum, 35% fly ash, and 3% Portland cement was selected based on strength and volumetric expansion properties to conduct additional experimental studies to quantify its modulus of elasticity, Poisson’s ratio, setting times, density, void contents, and curing time effects on strength and volumetric Development of new pHadjusted fluorogypsumcementfly
Use of a LowCost ConcreteLike FluorogypsumBased Blend
2017年9月21日 Calcite: CaCO 3 49 C Testing proce dures The FGbased blend introduced in this paper is a concrete A composition with 62% pHadjusted fluorogypsum, 35% fly ash, and 3% Portland Xuemao GUAN Cited by 1,923 of Henan Polytechnic University, Henan’an (HPU) Read 100 publications Contact Xuemao GUANXuemao GUAN Henan Polytechnic University, Henan’an HPU Fluorogypsum is generated during the production of hydrofluoric acid from fluorspar (a mineral composed of calcium fluoride) and sulfuric acid This can be achieved using standard construction and/or mineral processing equipment Phosphogypsum Drying Phosphogypsum is a fine, damp, silty material Construction of stabilized base mixtures in UGMat Sulfate Wastes Recycled Materials Resource Center2024年9月24日 M L, et alStudy on the properties and hydration mechanism of a new fluorogypsumbased filling material[J]Journal of Henan Polytechnic University(Natural Science) ,2024,43(6):185193新型氟石膏基充填材料性能及水化机理研究王春1,2, 张翼飞1, 朱 , 新型氟石膏基充填材料性能及水化机理研究河南理工大学
Study on the proportion of paste filling materials based
2024年1月2日 The industrial waste fluorogypsum (FG), which has adverse effects on people and the environment, is composed of calcium sulfate (CaSO 221 Test equipment and process2009年2月1日 Introduction Fluorogypsum (FG), a waste of hydrofluoric acid industry, has been studied for use as building material Waterresistant 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 components This paper Activation of fluorogypsum for building materials Semantic Filling mining is an important way to realize the green development of mines Highwater filling materials have been widely used because of their short setting time In this material, 40% of the raw material is natural anhydrite, and the main component is anhydrous calcium sulfate (CaSO 4 ) Fluorogypsum is an industrial solid waste produced in the production of hydrofluoric acidThe effect of fluorogypsum on the properties of highwater Figure 1 Experimental equipment and test configurations: (a) extruder and specimen extruded from the plastic mold, and (b) loading frame and specimen for the unconfined compression test RESULTS SEM , XRD and XRF R esults The obtained SEM images of kaolinite, FG, and mixture FG70 QL5 after cementation are shown in Figure 2Effects of Fluorogypsum and Quicklime on Unconfined
Activation of fluorogypsum for building materials NIScPR
2009年1月30日 Activation of fluorogypsum for building materials M Singh* and M Gar g Central Building Research Institute, Roorkee 247 667, India Received 08 July 2008; revised 20 November 2008; accepted 02 january 2009 Fluorogypsum, a waste product of hydrofluoric acid industry, has been blended with Ca(OH) 2 and chemical additivesHighstrength concretelike FG blends and methods for producing them are described The blend includes FG, hydraulic cement, additional alkali material, and pozzolanic material The blend further includes an admixture used in the formulation of concrete The blend further includes an aggregate The aggregate is a coarse aggregate or a fine aggregateHigh strength concretelike fluorogypsumbased blends and 2017年9月11日 FLUOROGYPSUM MATERIAL SAFETY DATA SHEET 1 IDENTIFICATION OF THE SUBSTANCE/COMPANY 11 Product identifiers Product name: Fluorogypsum (anhydrous calcium sulphate) 61 Personal precautions, protective equipment and emergency procedures Ensure adequate ventilation and use an effective dust mask 62 Environmental precautionsMETADYNAMICS With Tank2011年10月1日 The waste fluorgypsum was modified and applied as a cement retarder The main chemical composition and mineral structure of the waste fluorgypsum were analyzed Scanning electron microscopy (SEM) and eightchannel microcalorimeter (TAM Air) were employed to analyze the changes in morphology and study the application performance of the Modification of waste fluorgypsum and its applications as a
Activation of fluorogypsum for building materials Request
2009年2月1日 Fluorogypsum (FG), a byproduct obtained during the production of hydrofluoric acid, satisfies these conditions, as it is capable of binding granular materials Approximately 894,000 metric tons DOI: 101016/jjmrt202309005 Corpus ID: ; Effects of 1,2,3Propanetricarboxylic Acid on the hydration and microstructure of fluorogypsum @article{Zhu2023EffectsO1, title={Effects of 1,2,3Propanetricarboxylic Acid on the hydration and microstructure of fluorogypsum}, author={Jianping Zhu and Zuolin Wang and Chen Zhang and Qilin Wang and Tian Han and Effects of 1,2,3Propanetricarboxylic Acid on the hydration 2011年11月10日 The mechanism of activator to fluorgypsum and the fluorine solidification were investigated by the performances of composite binding material Through the setting time testing of fluorgypsum with NaOH, Na2SO4 and NaF, the least activator dosage were all 1% And the cementitious material over 80% of fluorgypsum was processed to improve its quality with slag, The activation of fluorgypsum with slag activator and the 2023年8月22日 Xray diffraction analysis of FGD gypsum (Fig 8 a) suggests that it is primarily composed of CaSO 4 2H 2 O, with low amounts of anhydrite (CaSO 4) and calcite (CaCO 3) in addition to some peaks for quartz (SiO 2) that may be A comprehensive review of flue gas desulphurized gypsum:
Development of new pHadjusted fluorogypsumcementfly
A composition with 62% pHadjusted fluorogypsum, 35% fly ash, and 3% Portland cement was selected based on strength and volumetric expansion properties to conduct additional experimental studies to quantify its modulus of elasticity, Poisson’s ratio, setting times, density, void contents, and curing time effects on strength and volumetric 2023年6月8日 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 Study on the proportion of paste filling materials 2020年8月1日 The study explores the influence of polycarboxylate admixture (PCE) on fluorogypsumbased selfleveling material (FSLM) performance Wev conducted an array of tests to assess workability and On thermal effects of early structure formation of fluorogypsum 2018年9月10日 A composition with 62% pHadjusted fluorogypsum, 35% fly ash, and 3% Portland cement was selected based on strength and volumetric expansion properties to conduct additional experimental studies to quantify its modulus of elasticity, Poisson’s ratio, setting times, density, void contents, and curing time effects on strength and volumetric Development of new pHadjusted fluorogypsumcementfly
(PDF) Effects of Fluorogypsum and FlueGas ResearchGate
2021年11月27日 Science and Engineering, Henan Polytechnic University, Jiaozuo , China; * Correspondence: ; T el: +861827年6月8日 The effects of five factors, including gangue, fly ash, fluorogypsum, lime content, and mass concentration on the physical and mechanical properties of filling material were also examinedStudy on the proportion of paste filling materials based on fluorogypsum2015年6月1日 Present studies deal with the formulation of sulphate resistant super sulphated cement using flourogypsum (83 %), granulated blast furnace slag (10 %) and OPC (7%) by grinding and blending in a Formulation of Sulphate Resistant Super Sulphated Cement Journal of Physics: Conference Series PAPER OPEN ACCESS 2QWKHUPDOHIIHFWVRIHDUO\VWUXFWXUHIRUPDWLRQRIIOXRURJ\SVXP FRPSRVLWHELQGHU To cite this article: L A Anikanova et al 2020 J Phys: Conf Ser SVXP FRPSRVLWHELQGHU ResearchGate
Synergistic effects of rubbertirepowder and fluorogypsum
2021年6月1日 In the hydration process, it was observed that a low fluorogypsum content slightly accelerated the cement reactions, while the rubbertirepowder inhibited them Regarding the cementrubber mixture, the cementrubberfluorogypsum mixture had a recovery of 283 % in the compressive strength and 360 % in the modulus of elasticityFluorogypsum Fluorogypsum is generated at the EI DuPont De Nemours Com pany, Inc, HF Plant in LaPorte, Texas The material is initially pro duced in the anhydrite form (CaS04) However, after neutralization with a lime slurry, the fluorogypsum will be converted primarily to the dihydrate form EXPERIMENTAL INVESTIGATIONEnvironmental Characteristics of ByProduct Gypsum