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
Weathered coal humic acid bean diced
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 Humic acids from Chinese weathered coal were pHfractionated successfully The compositional and structural characteristics of HA fractions were investigated The characteristics of HA Characterization of pHfractionated humic acids derived from 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 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 (PDF) Characterization of pHfractionated humic acids derived
Structural characteristics of humic acids derived from Chinese
2019年5月31日 Weathered coal is formed when nearsurface or shallowsurface coal is exposed to physical and chemical weathering for a long period [ 1 ] Due to the influence of longterm 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 Conversion of Weathered Coal into High ValueAdded 2016年1月3日 Abstract: By using Huangling weathered coal from the Shaanxi province as the raw material, humic acid from weathered coal was extracted through alkali soluble acid, Humic acid extraction from weathered coal and its properties 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 Characterization of humic acids from original coal and its Nature
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 deg2019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 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 2015年10月2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 obtainedCharacterization of humic acids derived from Leonardite using a
Effects of urea enhanced with different weathered coalderived humic
2019年3月1日 A limited number of recent studies have revealed that granulation of BC with urea or coalderived humic acid with urea was more effective and bene cial, and substantially enhanced N uptake and 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 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 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
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 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 Frontiers Understanding the Role of Humic Acids on Crop 2024年9月2日 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 humic acid Additionally, Process Condition Optimization and Structural Feature 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 Structural characteristics of humic acids derived from Chinese
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 Weathered coal is a widely used raw material of farmoriented humic acid in China, while the high heterogeneity impedes its sufficient utilization In this study, we fractionated the humic acid derived from Chinese weathered coal by ultrafiltration,(PDF) Characterization of UltrafiltrationFractionated Humic Acid 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 2002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
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 (H 2 O 2) under various conditions, and their chemical composition and structure were examinedThe raw material humic acids (HA) and oxidized humic acids (OHAs) were characterized by elemental analysis and ultraviolet visible (UVVis), Fourier transform infrared 2022年3月2日 Humic acids (HA) are organic molecules that play essential roles in improving soil properties, plant growth, and agronomic parameters The sources of HA include coal, lignite, soils, and organic (PDF) Understanding the Role of Humic Acids on Crop 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 2022年6月26日 Weathered coal is known to have potential inhibitory effects on urease activity, thus reducing the loss of nitrogen from fertilizer such as ammonia This means that it can be used as a urea enhancer to promote urea utilization efficiency However, the variation in its composition and structure has impeded the optimal utilization of this resource In this study, we collected Characteristics of Chinese Weathered Coal from Six Geographical
(PDF) Effects of Humic Acid From Weathered Coal on Water
2024年7月16日 Organic carbon content in waterstable aggregates of reclaimed cambisol for different weathered coal humic acid treatments Note: Different lowercase letters indicate significant differences in 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 Characterization of coalbased humic acids in relation to their 2022年6月26日 weathered coal increased, the weathered coal, characterized as having a higher humic acid content and a more aliphatic structure, showed a more rapid increase in the ur ease activity inhibition rate,Characteristics of Chinese Weathered Coal from Six Weathered coal is a widely used raw material of farmoriented humic acid in China, while the high heterogeneity impedes its sufficient utilization 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 pHfractionated humic acids derived
不同来源风化煤腐植酸化学特征与生物活性研究
Result The results showed that the total humic acid contents of weathered coal from Zuoquan, Wutai and Jingle were between 371% and 409%, but the free humic acid contents varied greatly (192%, 1009% and 3062%, respectively) The content of total acidic functional group phenolic hydroxyl was significantly different, and the content ratio of the three samples was Corpus ID: ; Role of coalderived humic acid in the availability of nutrients and growth of sunflower under calcareous soil @article{Sadiq2014RoleOC, title={Role of coalderived humic acid in the availability of nutrients and growth of sunflower under calcareous soil}, author={Syed Abdul Sadiq and Dost Mohammad Baloch and N Ahmed and Hidayatullah}, journal={Journal Role of coalderived humic acid in the availability of nutrients and 2016年9月3日 Lead (Pb) has progressively become a widespread contaminant in the environment because of its intensive use and inherent stability The contamination of Pb in agricultural soils is a major environmental problem This paper considers the use of weathered coal humic acids for in situ remediation of Pbcontaminated soils The effectiveness of acid Effect of Weathered Coal on the Leaching Behavior of Lead 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
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 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 into seven fractions by adjusting the pH (310) of the extraction solutionCharacterization of pHfractionated humic acids derived from 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 degStructural 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 Structural characteristics of humic acids derived from Chinese
Structural characteristics of humic acids derived from
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 examined2015年10月2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 obtainedCharacterization of humic acids derived from Leonardite using a 2019年3月1日 A limited number of recent studies have revealed that granulation of BC with urea or coalderived humic acid with urea was more effective and bene cial, and substantially enhanced N uptake and Effects of urea enhanced with different weathered coalderived humic 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
(PDF) Characterization of UltrafiltrationFractionated Humic Acid
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 obtainedKeywords: 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 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 its2022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 Frontiers Understanding the Role of Humic Acids on Crop