MTW European Type Trapezium Mill
Input size:30-50mm
Capacity: 3-50t/h
LM Vertical Roller Mill
Input size:38-65mm
Capacity: 13-70t/h
Raymond Mill
Input size:20-30mm
Capacity: 0.8-9.5t/h
Sand powder vertical mill
Input size:30-55mm
Capacity: 30-900t/h
LUM series superfine vertical roller grinding mill
Input size:10-20mm
Capacity: 5-18t/h
MW Micro Powder Mill
Input size:≤20mm
Capacity: 0.5-12t/h
LM Vertical Slag Mill
Input size:38-65mm
Capacity: 7-100t/h
LM Vertical Coal Mill
Input size:≤50mm
Capacity: 5-100t/h
TGM Trapezium Mill
Input size:25-40mm
Capacity: 3-36t/h
MB5X Pendulum Roller Grinding Mill
Input size:25-55mm
Capacity: 4-100t/h
Straight-Through Centrifugal Mill
Input size:30-40mm
Capacity: 15-45t/h
Humic acid enterprise weathered coal mill
Preparation of Humic Acid from Weathered Coal by
2024年6月25日 In this study, the weathered coal from Inner Mongolia was used as the raw material, and the mechanical energy was used to activate the weathered coal through a planetary ball mill, which improved the extraction 2024年6月25日 In this study, the weathered coal from Inner Mongolia was used as the raw material, and the mechanical energy was used to activate the weathered coal through a planetary ball mill, whichPreparation of Humic Acid from Weathered Coal by Mechanical 2023年12月15日 Conversion of weathered coal into high valueadded humic acid by magnetically recoverable Fe 3 O 4 /LaNiO 3 nanocatalysts under solidphase grinding conditionsExtraction and characterization of humic acid with high bioactivity 2017年1月1日 To reduce the compositional and structural heterogeneity of humic acids (HAs) and achieve better use of HA resources, in this study, we report a new sequential dissolution method for HAs derived from Chinese weathered coal This method was used to separate HAs Characterization of pHfractionated humic acids derived from
Characterization of humic acids from original coal and its Nature
2021年7月28日 Five coal samples obtained from Chinese coalproducing areas were oxidized by hydrogen peroxide (H 2 O 2), and humic acids (HAs) were derived from original coal and its oxidizition2022年3月31日 The Fe 3 O 4 /LaNiO 3 composite, synthesised with the solgel method, is considered to be an excellent nanocatalyst for the production of high valueadded humic acids from oxidised weathered coal under solid phase Conversion of Weathered Coal into High ValueAdded In this study, the weathered coal from Inner Mongolia was used as the raw material, and the mechanical energy was used to activate the weathered coal through a planetary ball mill, whichPreparation of Humic Acid from Weathered Coal by Mechanical 2019年5月31日 Humic acids derived from Chinese weathered coal were oxidized with hydrogen peroxide (H 2 O 2) under various conditions, and their chemical composition and structure were examinedStructural characteristics of humic acids derived from Chinese
Characterization of coalbased humic acids in relation to their
In this study, response surface methodology (RSM) was adopted to investigate the optimization of process conditions for extracting humic acid (HA) from coal, aiming to enhance the yield of humicHumic acids from Chinese weathered coal were pHfractionated successfully The compositional and structural characteristics of HA fractions were investigated The characteristics of HA fractions varied with the extraction solution pH HA6~7 had the highest aromaticity and the most Characterization of pHfractionated humic acids derived from Minerals 2024, 14, 648 3 of 15 yield HA of larger molecular weight and higher aromaticity is obtained from weathered coal by using the action of mechanical energy 2Preparation of Humic Acid from Weathered Coal by Mechanical Weathered coal, commonly known as outcrop coal, generally refers to products formed by the infiltration and weathering of lignite, bituminous coal, anthracite, which are close to or exposed to the surface, through air, sunlight, rain, snow, Weathered coal humic acid
Structural characteristics of humic acids derived from Chinese
derived from weathered coal Humic acids from weathered coal may have good prospects and advantages, that are worthy of investigation [7] Existing research has been directed at characterizing humic acids through their degradation into individual monomers using hydrolysis, reduction, oxidation etc [13–15] Among all deg2021年8月11日 The chemical pretreatment of both types of coal led to enhanced yields of humic acid from 2115% to 578% for lignite lowrank coal and 116% to 496% bituminous high rank coal The derived humic Extraction and Chemical Characterization of Humic Acid from Nitric Acid 2019年5月31日 Humic acids derived from Chinese weathered coal were oxidized with hydrogen peroxide (H2O2) under various conditions, and their chemical composition and structure were examined The raw material humic acids (HA) and oxidized humic acids (OHAs) were characterized by elemental analysis and ultraviolet visible (UVVis), Fourier transform infrared Structural characteristics of humic acids derived from Chinese 2017年1月31日 The structural pattern of the humic acids derived from weathered coal according to the 13 CCP/MASNMR assay was comparable with that of humic acids from weathered coals [32, 38], lignite [20][21 Characterization of pHfractionated humic acids derived from
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Characterization of humic acids from original coal and its
Lignite and weathered coal are abundant in China Due to higher oxidation degree and lower calori˚c value, they are unsuitable to serve as power generation fuel or coking coal 12,13 2019年5月31日 Humic acids derived from Chinese weathered coal were oxidized with hydrogen peroxide (H2O2) under various conditions, and their chemical composition and structure were examinedStructural characteristics of humic acids derived from Chinese 2019年3月1日 Journal of Integrative Agriculture 2019, 18(3): 656–666 RESEARCH ARTICLE Available online at sciencedirect ScienceDirect Effects of urea enhanced with different weathered coalderived humic acid components on maize yield and fate of fertilizer nitrogen ZHANG Shuiqin1, 2*, YUAN Liang1*, LI Wei1, LIN Zhian1, LI Yanting1, HU Shuwen2, Effects of urea enhanced with different weathered coalderived humic 2021年10月9日 In this study, we fractionated the humic acid derived from Chinese weathered coal by ultrafiltration, and three fractions with the molecular range of ≥100 kDa, 10–100 kDa, ≤10 kDa were obtained(PDF) Characterization of UltrafiltrationFractionated Humic Acid
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Characterization of pHfractionated humic acids derived from
DOI: 101016/jemosphere201609095 Corpus ID: ; Characterization of pHfractionated humic acids derived from Chinese weathered coal @article{Zhang2017CharacterizationOP, title={Characterization of pHfractionated humic acids derived from Chinese weathered coal}, author={Shuiqin Zhang and Liang Yuan and Wei Li 2012年3月22日 The application of weathered coal humic acid could reduce the Pb concentration of soil leachates The removal of Pb was efficient, particularly at the 1000mgkg−1 Pb pollution level, Sorption of norfloxacin onto humic acid extracted from weathered coal Appl Sci 2019, 9, 1356 3 of 13 acid contents were 7323% and 898%, respectively HA could be broken up into two soluble and two insoluble fractions by successive dissolution in deionized water Extraction of Humic Acid from Lignite by KOH ResearchGate2002年3月1日 Weathered coal contains much humic acid and a little fulvic acid Therefore, in this work, the production of fulvic acid, the most valuable humic substance because of its watersolubility, was (PDF) Preparation of Fulvic Acid and Lowmolecular Organic Acids
Characterization of coalbased humic acids in relation to their
DOI: 101080/2020 Corpus ID: ; Characterization of coalbased humic acids in relation to their preparation methods @article{Jia2020CharacterizationOC, title={Characterization of coalbased humic acids in relation to their preparation methods}, author={Jianbo Jia and Yaojie Zhang and Quanrun Liu and Guangxu Huang and Baolin Xing 2022年3月31日 The Fe3O4/LaNiO3 composite, synthesised with the solgel method, is considered to be an excellent nanocatalyst for the production of high valueadded humic acids from oxidised weathered coal under solid phase milling process conditions Under optimum process conditions (1% catalyst, 10% activator, 60 min grinding), 484% of the weathered coal Conversion of Weathered Coal into High ValueAdded Humic Acid 2022年2月24日 Suitable coal types: lignite, weathered coal, peat, etc Humic acid fertilizer has the advantages of soil improvement, improving crop production, and avoiding soil compaction HGM ultrafine grinding mill 1502500 mesh Get more CLUM ultrafine vertical mill 2003000 mesh Get more Highpressure grinding millHow is pulverized coal processed? SBM Ultrafine Powder 2012年7月15日 Humic acid samples were extracted from weathered coal obtained from Datong, Shanxi province, China The extraction method of the International Humic Substances Society (IHSS) was employed Briefly, the weathered coal was mixed with 01 mol L −1 HCl at a ratio of 10 mL liquid/1 g dry sample to extract humic substances repeatedly until the supernatant Sorption of norfloxacin onto humic acid extracted from weathered coal
Frontiers Understanding the Role of Humic Acids on Crop
2022年3月1日 Humic acids with low molecular weight (LMW) contain more phenolic and carboxylic functional groups than HA with high molecular weight (HMW) (De Melo et al, 2016)The chelating ability of HA has also been attributed to LMW, which is efficacious in altering the biochemical characteristics of the soil, while HMW is efficient in improving the soil physical Keywords: Chinese weathered coal; ultrafiltration; humic acid fractions; aromatic structure; carboxyl group 1 Introduction Weathered coal is a kind of lowrank coal, which is usually exposed to the Earth’s surface or buried at shallow depths Characterization of UltrafiltrationFractionated Humic Acid 2017年5月5日 By using Huangling weathered coal from the Shaanxi province as the raw material, humic acid from weathered coal was extracted through alkali soluble acid, oxygen, and catalytic methods and the Humic acid extraction from weathered coal and its properties 2018年7月1日 The raw material used in the extraction of humic acid (HA) was the subbituminous coal from Candiota mine (southern of Brazil), with mean diameter of 0032 mm determined by laser granulometry (Cilas 1180) The proximate analysis of coal revealed 5336% of ash content, 2428% of volatile matter and 5% of total moistureExtraction and characterization of humic acid from coal for the
(PDF) Characterization of UltrafiltrationFractionated Humic Acid
The KBr tablets were prepared by grinding 2 mg of freezedried HA samples with 200 mg ovendried KBr in a vibrating puck mill, The abundant acidic, especially carboxyl, groups provided a basis for the resource utilization of humic acid derived from weathered coal as chelating agent for fertilizer and pollutant [1,16,37] Table 2Humic acids is a kind of natural polymer organism, is extensively present in the lowgrade coal of the low combustion values such as weathered coal, brown coal, peatAccording to the present invention, the humic acid minerals source raw material adding coal pulverizer can be one or more in weathered coal, brown coal, peat, its water content is preferably within the scope of 10 ~ Preparation method of humic acid salt Google Patents2019年5月31日 Humic acids derived from Chinese weathered coal were oxidized with hydrogen peroxide (H2O2) under various conditions, and their chemical composition and structure were examined The raw material humic acids (HA) and oxidized humic acids (OHAs) were characterized by elemental analysis and ultraviolet Structural characteristics of humic acids derived from Chinese Request PDF On Jun 25, 2019, Dan Liu and others published Nitrogen and phosphorus adsorption in aqueous solutions by humic acids from weathered coal: Isotherm, kinetics and thermodynamic Nitrogen and phosphorus adsorption in aqueous solutions by humic acids
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Response of maize roots to different additive amounts of weathered coal
2019年1月16日 【Objective】Weathered coal humic acid possesses abundant reserves in China, which has multiple active functional groups The response of roots to humic acid, which acts as a humic acid acting 2021年3月1日 The properties of the initial soil samples are shown in Table S1 The tested humic acid (HA) was weathered coal HA taken from Shandong Nongda Fertilizer Technology Co, Ltd, and the basic Effects of different types of humic acid isolated from coal on soil humic acids accounted for 5040% of the weathered coal weight The ash content was 1921% The humic acids were stored in a sealed plastic bottle to prevent absorption of moisture fromStructural characteristics of humic acids derived from Chinese DOI: 101016/S20953119(18)619501 Corpus ID: ; Effects of urea enhanced with different weathered coalderived humic acid components on maize yield and fate of fertilizer nitrogenEffects of urea enhanced with different weathered coalderived humic
Preparation of Humic Acid from Weathered Coal by Mechanical
Minerals 2024, 14, 648 3 of 15 yield HA of larger molecular weight and higher aromaticity is obtained from weathered coal by using the action of mechanical energy 2Weathered coal, commonly known as outcrop coal, generally refers to products formed by the infiltration and weathering of lignite, bituminous coal, anthracite, which are close to or exposed to the surface, through air, sunlight, rain, snow, Weathered coal humic acidderived from weathered coal Humic acids from weathered coal may have good prospects and advantages, that are worthy of investigation [7] Existing research has been directed at characterizing humic acids through their degradation into individual monomers using hydrolysis, reduction, oxidation etc [13–15] Among all degStructural characteristics of humic acids derived from Chinese 2021年8月11日 The chemical pretreatment of both types of coal led to enhanced yields of humic acid from 2115% to 578% for lignite lowrank coal and 116% to 496% bituminous high rank coal The derived humic Extraction and Chemical Characterization of Humic Acid from Nitric Acid
Structural characteristics of humic acids derived from Chinese
2019年5月31日 Humic acids derived from Chinese weathered coal were oxidized with hydrogen peroxide (H2O2) under various conditions, and their chemical composition and structure were examined The raw material humic acids (HA) and oxidized humic acids (OHAs) were characterized by elemental analysis and ultraviolet visible (UVVis), Fourier transform infrared 2017年1月31日 The structural pattern of the humic acids derived from weathered coal according to the 13 CCP/MASNMR assay was comparable with that of humic acids from weathered coals [32, 38], lignite [20][21 Characterization of pHfractionated humic acids derived from Lignite and weathered coal are abundant in China Due to higher oxidation degree and lower calori˚c value, they are unsuitable to serve as power generation fuel or coking coal 12,13 Characterization of humic acids from original coal and its2019年5月31日 Humic acids derived from Chinese weathered coal were oxidized with hydrogen peroxide (H2O2) under various conditions, and their chemical composition and structure were examinedStructural characteristics of humic acids derived from Chinese
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Effects of urea enhanced with different weathered coalderived humic
2019年3月1日 Journal of Integrative Agriculture 2019, 18(3): 656–666 RESEARCH ARTICLE Available online at sciencedirect ScienceDirect Effects of urea enhanced with different weathered coalderived humic acid components on maize yield and fate of fertilizer nitrogen ZHANG Shuiqin1, 2*, YUAN Liang1*, LI Wei1, LIN Zhian1, LI Yanting1, HU Shuwen2, 2021年10月9日 In this study, we fractionated the humic acid derived from Chinese weathered coal by ultrafiltration, and three fractions with the molecular range of ≥100 kDa, 10–100 kDa, ≤10 kDa were obtained(PDF) Characterization of UltrafiltrationFractionated Humic Acid