Ultrafine coal gangue powder in cement

ReviewHighcapacity utilization of coal gangue as supplementary

2024年7月12日  Incorporating calcined CG powder and limestone powder to replace 30–50 % of the cement in cementitious materials generally satisfies and exceeds the performance criteria In this study, CG powder was introduced into the nonfibrous ultrahigh Utilization of coal gangue po2022年8月20日  The results showed that the flexural and compressive strengths of concrete prepared with cement replaced by 15 wt% thermally activated coal gangue powder at 800 °C Influence of thermally activated coal gangue powder on the 2023年7月3日  In this study, CG powder was introduced into the nonfibrous ultrahigh performance concrete (UHPC) matrix This strategy is anticipated to achieve a higher CG Utilization of coal gangue powder to improve the sustainability of

[PDF] Study on the reaction degree of calcined coal gangue

2009年9月1日  The ultrafine silica powder was successfully prepared using coal gangue as the silica source including This study aims to minimize the carbon emissions of cement and 2023年10月3日  Microscopic analysis revealed that CGP increased the Ca/Si ratio in cement paste, impeding hydration reactions, resulting in a looser internal structure and reduced concrete strength These findings are anticipated to Influence of Coal Gangue Powder on the Macroscopic 2019年8月26日  The blended cement containing 10% UCFA possesses excellent properties, which ever surpasses pure portland cement Furthermore, the physical and mechanical The hydration properties of blended cement containing ultrafine 2024年5月17日  This paper proposes a new method of reusing uncalcined coal gangue (UCG) as a mineral admixture in magnesium ammonium phosphate cement (MAPC) blended with fly Influence of Uncalcined Coal Gangue on the Microstructure and

Preparation of coal gangue ceramsite highstrength concrete and

2022年9月30日  To improve the performance of CG ceramsite lightweight aggregate concrete (CGCLAC), it is necessary to improve the physical and mechanical properties of coal gangue 2023年7月1日  This study focuses on the calcined coal gangue (CCG)blended cements containing Stöber nanoSiO2 (SNS) particles The effects of SNS particles on the workability, Utilization of coal gangue powder to improve the sustainability of 2023年7月1日  Innovative use of agrowaste cane bagasse ash and waste glass as cement replacement for green concrete Cost analysis and carbon dioxide emissionsUtilization of coal gangue powder to improve the sustainability of 2024年2月1日  Representative coal gangue in China: Physical and chemical In the existing research, it is often used to produce gangue cement, concrete lightweight aggregate, refractory bricks and other Chen et al (2022), Tang et al (2019) used 20% CG powder instead of cement in concrete and studied its effect on cement hydration Representative coal gangue in China: Physical and chemical

Exploring calcined coal gangue fines as the total substitute of fly

2022年12月1日  Their findings showed that by using the activated coal gangue powder, cement hydration was modified, and mortars with 70 % cement and 30 % coal gangue powder with temperatures 600–700 ℃ developed the highest compressive strength Zhou [16] prepared coal gangue powder through calcination at 820 ℃2023年8月1日  Reference cement (C, with 95% clinker and 5% gypsum) was used in control and experimental group Different fly ash include raw circulating fluidized bed fly ash (coal gangue power plant, Pingshuo, Shanxi Province, China), grinded CFB fly ash (GCFA, prepared by ball mill in laboratory), ultrafine CFA (prepared by industrial jet mill ultrafine grinding) and ordinary fly Utilization of coal gangue power generation industry byproduct 2023年1月30日  Coal ganguebased mining cementitious filler is a kind of coal gangue aggregate, coal gangue powder, cement, and other materials in accordance with a certain proportion of configuration into a green cementitious filler with good fluidity, stability, and plasticity, through the role of gravity or external force transported to the mining area, so as to achieve Study on the modification effect and mechanism of tailings powder 2020年2月20日  A large amount of coal gangue buildup may be a potential fire hazard associated with the heat released by microorganisms accumulating to the point of spontaneous combustion in the presence of unburned coal, pyrite (FeS 2) and oxygenCoal gangue is likely to cause largescale fire and blast disasters, and produce a significant amount of toxic emissions Reactivity activation of waste coal gangue and its impact on the

Utilization of coal gangue power generation industry byproduct

2023年8月1日  Utilization of coal gangue power generation industry byproduct CFA in CFA through grinding methods can significantly mitigate the detrimental effect of CFA on the flowability of cement paste When 15% ultrafine CFA (UCFA) The pharmaceutical industry utilizes powder rheology for optimizing the production of solid dosage forms 2023年11月21日  Coal gangue (CG) is an environmental waste that faces an urgent demand for disposal in China The utilization of CG in construction materials has broad application prospects and gained increasing An alternative approach to improve the compatibility of PCE in cement Download Citation On Jan 1, 2024, Jihui Zhao and others published Application of an industrialized ultrafine composite powder in cementbased materials: Hydration characteristics, microstructure Application of an industrialized ultrafine composite powder in cement 2015年3月24日  The prepared coal gangue based blended cement, containing 52% of activated coal gangue C (by CMHTA technology), has a better mechanical property than activated coal gangue T (by TMTA technology (PDF) Synthesis of Ultrafine Silica Powder Using the Silica Source

An alternative approach to improve the compatibility of PCE in cement

of cement and CG powder (Unit: %, in weight) CG, coal gangue Material CaO Al 2 O 3 SiO 2 K 2 O Fe 2 O 3 MgO SO 3 Cement 6314 435 2099 083 354 294 346 CG powder 110 1895 5512 288 474 150 023 Fig 2 The characteristics of cement and CG powder by XRD and SEM tests XRD xray diraction, SEM scanning electron microscope2023年8月9日  Coal gangue is a kind of solid waste A highductility cementcalcined coalganguepowdercompositebased rapid repair material (HDRRM) was prepared by partially replacing cement with calcined coal gangue powder Preparation of HighDuctility CementCalcined Coal 2021年9月1日  Request PDF Synergic performance of lowkaolinite calcined coal gangue blended with limestone in cement mortars Utilization of calcined coal gangue (CCG) as cement replacement has the Synergic performance of lowkaolinite calcined coal gangue blended 2009年9月1日  Calcined coal gangue powder was used to partially replace Portland cement (PC) at 10%, 20%, 30%, and 40% by weight The water to binder ratio (w/b) of 05 was used for all the blended cement paste (PDF) Study on the reaction degree of calcined coal gangue powder

Synergistic performance of microwaveactivated coal gangue with

2024年11月1日  In recent years, Limestone Calcined Clay Cement (LC 3) [1], which primarily comprises calcined clay, limestone powder, and cement clinker, has become a focal point in the field of lowcarbon binder materials [[2], [3], [4]]The foundation of LC 3 cement lies in the synergistic interaction between calcined clay and limestone [5], allowing a clinker substitution 2021年9月20日  DOI: 101016/JCONBUILDMAT2021 Corpus ID: ; Synergic performance of lowkaolinite calcined coal gangue blended with limestone in cement mortars @article{Liu2021SynergicPO, title={Synergic performance of lowkaolinite calcined coal gangue blended with limestone in cement mortars}, author={Yuxuan Liu and Tungchai Ling and Min Synergic performance of lowkaolinite calcined coal gangue 2019年12月1日  The accumulation of considerable coal gangue not only occupies a great deal of land resource, but also results in serious environmental problems, eg, soil pollution, air pollution, and geologic hazards (Stracher and Taylor, 2004)The heat continues to accumulate during the accumulation process, which leads to spontaneous combustion with the oxidization of coal Comprehensive utilization and environmental risks of coal gangue: A 2022年9月15日  Coal gangue is one of the industrial solid wastes that may harm the human body through the ecosystem for a long time Using coal gangue in geopolymer preparation can effectively reduce cement output and meet the sustainability requirements In this paper, the physical and chemical characteristics, including the heavy metal content, of coal gangue from Activation Mechanism of Coal Gangue and Its Impact on the

Durability of high strength selfcompacting concrete with fly ash, coal

2024年10月25日  The coal gangue powder (CGP) was sourced from Lingshou County in Hebei Province A cement factory in Shandong Province collected the cement kiln dust (CKD) from the kiln tail gas during the production of Portland clinker Additionally, recycled powder with a particle size of less than 016 mm was obtained from Beijing Urban Lvyuan2019年6月1日  Coal gangue was obtained from Dalianhe city, Heilongjiang province of China It looks brickred particles due to selfignition effect and was pulverized into a powder as shown in Fig 1The mineralogical phase of coal gangue consists of quartz and feldspar as indicated in Fig 2Portland cement (PC) was produced by Dalian Cement Group with strength grade of 425 in Properties of coal ganguePortland cement mixture with 2022年1月26日  Thus, the use of coal gangue (CG) and coal gasification slag (CGS) as SCMs in concrete attracted more researcher’s attention This paper investigated the mechanical strength, porosity, and Durability of Concrete With Coal Gasification Slag and Coal Gangue Powder2023年11月20日  DOI: 101007/s4276802300174y Corpus ID: ; An alternative approach to improve the compatibility of PCE in cement paste blend with coal gangue powder @article{Xie2023AnAA, title={An alternative approach to improve the compatibility of PCE in cement paste blend with coal gangue powder}, author={Zonglin Xie and Yuxuan Li and Dahui An alternative approach to improve the compatibility of PCE in cement

Recent advances in the beneficiation of ultrafine coal particles

2018年9月1日  In a commercial setting, coal preparation plants often discard ultrafine coal because of the high clay and high ash content These ultrafine coal particles are classified as waste and discarded since the coal cannot be efficiently and economically separated from gangue material [8]The problem of discarding ultrafine coal to numerous impoundments worldwide 2020年4月14日  22 Experiment The chemical composition measured by Bruker S8 TIGER XRF analysis; the mineralogical composition measured via Bruker D8 ADVANCE XRD analysis; thermal analysis conducted with Mettler Toledo analyzer in a temperature range of 30–1000 °C at a heating rate of 10 °C/min and N 2 or O 2 atmosphere Mortar strength test: prismatic mortar Identification and Activation of Coal Gangue and Performance 2021年9月1日  Coal gangue was collected from Ordos mining area, China The mineral phase was characterized by XRD (Fig 1 (a))Kaolinite (Al 2 O 3 2SiO 2 2H 2 O) and quartz (SiO 2) were the main crystalline minerals in raw coal gangueThe chemical composition is listed in Table 1The mineral composition of raw coal gangue is given in Table 2Results show that the raw Performance of microwaveactivated coal gangue powder as Jihui ZHAO Cited by 1,200 of Sun YatSen University, Guangzhou (SYSU) Read 45 publications Contact Jihui ZHAOJihui ZHAO Sun YatSen University, Guangzhou ResearchGate

Compressive and Flexural Properties of UltraFine Coal Gangue

2022年2月25日  In this study, activators with different sodium silicate modulus and alkali content were used to activate ultrafine coal gangue and slag powder to prepare coalganguebased geopolymers with high 2024年1月12日  To reduce the reliance on cement clinker, employing ultrafine powders as supplementary cementitious materials (SCMs) is gradually gaining importance This study investigated the effect of an ultrafine composite powder (UCP) having a specific surface area of approximately 730 m²/kg, produced by industrial ball milling ordinary blast furnace slag and fly Application of an industrialized ultrafine composite powder in cement 2021年10月13日  Coal Gangue Pulverizer Raymond Mill Finished product fineness: 80325 mesh Production capacity: 15100t/h It is suitable for the processing of more than 300 kinds of highfine powder materials in nonflammable and explosive mineral, chemical, construction and other industries with Mohs hardness not greater than 7 and humidity below 6%How To Effectively Use Coal Gangue?2022年9月20日  Coal gangue grinding powder can be used in coal gangue making bricks, cement making, light aggregate production, coal gangue blocks and so on (4) Brick making with coal gangue powder The process of making bricks from coal gangue is basically the same as that of clay bricks, mainly including the preparation, molding, drying and baking of raw materialsCoal Gangue Vertical Roller Mill SBM Ultrafine Powder

Optimization of BallMilling Parameters for Enhanced Compressive

2024年6月26日  The substitution of cement with coal gangue powder (CGP) offers significant potential for energy conservation, emission reduction, and environmental sustainability To optimize the mechanical properties of coal gangue cement paste, a modified response surface methodology (RSM) model was developed, incorporating grinding parameters as independent 2024年2月1日  Representative coal gangue in China: Physical and chemical In the existing research, it is often used to produce gangue cement, concrete lightweight aggregate, refractory bricks and other Chen et al (2022), Tang et al (2019) used 20% CG powder instead of cement in concrete and studied its effect on cement hydration Representative coal gangue in China: Physical and chemical 2022年12月1日  Their findings showed that by using the activated coal gangue powder, cement hydration was modified, and mortars with 70 % cement and 30 % coal gangue powder with temperatures 600–700 ℃ developed the highest compressive strength Zhou [16] prepared coal gangue powder through calcination at 820 ℃Exploring calcined coal gangue fines as the total substitute of fly 2023年8月1日  Reference cement (C, with 95% clinker and 5% gypsum) was used in control and experimental group Different fly ash include raw circulating fluidized bed fly ash (coal gangue power plant, Pingshuo, Shanxi Province, China), grinded CFB fly ash (GCFA, prepared by ball mill in laboratory), ultrafine CFA (prepared by industrial jet mill ultrafine grinding) and ordinary fly Utilization of coal gangue power generation industry byproduct

Study on the modification effect and mechanism of tailings powder

2023年1月30日  Coal ganguebased mining cementitious filler is a kind of coal gangue aggregate, coal gangue powder, cement, and other materials in accordance with a certain proportion of configuration into a green cementitious filler with good fluidity, stability, and plasticity, through the role of gravity or external force transported to the mining area, so as to achieve 2020年2月20日  A large amount of coal gangue buildup may be a potential fire hazard associated with the heat released by microorganisms accumulating to the point of spontaneous combustion in the presence of unburned coal, pyrite (FeS 2) and oxygenCoal gangue is likely to cause largescale fire and blast disasters, and produce a significant amount of toxic emissions Reactivity activation of waste coal gangue and its impact on the 2023年8月1日  Utilization of coal gangue power generation industry byproduct CFA in CFA through grinding methods can significantly mitigate the detrimental effect of CFA on the flowability of cement paste When 15% ultrafine CFA (UCFA) The pharmaceutical industry utilizes powder rheology for optimizing the production of solid dosage forms Utilization of coal gangue power generation industry byproduct 2023年11月21日  Coal gangue (CG) is an environmental waste that faces an urgent demand for disposal in China The utilization of CG in construction materials has broad application prospects and gained increasing An alternative approach to improve the compatibility of PCE in cement

Application of an industrialized ultrafine composite powder in cement

Download Citation On Jan 1, 2024, Jihui Zhao and others published Application of an industrialized ultrafine composite powder in cementbased materials: Hydration characteristics, microstructure 2015年3月24日  The prepared coal gangue based blended cement, containing 52% of activated coal gangue C (by CMHTA technology), has a better mechanical property than activated coal gangue T (by TMTA technology (PDF) Synthesis of Ultrafine Silica Powder Using the Silica Source of cement and CG powder (Unit: %, in weight) CG, coal gangue Material CaO Al 2 O 3 SiO 2 K 2 O Fe 2 O 3 MgO SO 3 Cement 6314 435 2099 083 354 294 346 CG powder 110 1895 5512 288 474 150 023 Fig 2 The characteristics of cement and CG powder by XRD and SEM tests XRD xray diraction, SEM scanning electron microscopeAn alternative approach to improve the compatibility of PCE in cement

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