pelletizing humic acid
Comparative study on the adsorption interactions of humic acid …
A further study on adsorption interaction of humic acid on natural magnetite, hematite and quartz in iron ore pelletizing process: Effect of the solution pH value Zhou Youlian Yuanbo Zhang Guanghui Li Wu Yudong T. Jiang
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CN100360691C
Starch acetate solution that the last step makes and humic acid salt solution mix add the linking agent of its total amount 0.02～0.04, stir 1～2h in 40～50 ℃, solution is spraying drying again, is crushed to 95% and crosses 80～150 orders, gets modified version pelletizing binder of the present invention, check, packing.
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Humic Substance-based Binder In Iron Ore Pelletization: A …
Fulvic acid is one of the important functional groups of modified humic acid (MHA) binder which is invented by the authors and can be used as an excellent …
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Prediction of Compressive Strength of Biomass–Humic Acid …
The effect of different proportions of humic acid on the compressive strength of the roasted pellets is illustrated in Figure 5D; when the proportion of humic acid in the pellet ore increases from 0.4% to 2.0%, the average compressive strength of the roasted pellets decreases, reaching a minimum value of 417 N at a humic acid content of 2.0%.
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Materials | Free Full-Text | Improving the Properties of …
A novel composite binder (humic acid modified bentonite, HAMB) and two other binders (bentonite and Modified humic acid, MHA) were used to explore the effects of binders on the properties of magnetite green pellets in this study. ... The binder is an important additive widely applied in pelletizing iron ore concentrates, making iron ore …
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Research on the Interaction of Humic Acid with Iron Minerals
Humic acid, extracted from poor lignite, is a kind of organic macromolecule polymer consisted of carboxyl groups and hydroxyl groups . Theoretically, humic acid should be a better alternative because of their ideal adhesive molecular conformation. A few of researches have been carried on humic acid used as binders for pelletizing.
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Coatings | Free Full-Text | Bonding Mechanism …
Pellet ore not only has excellent metallurgical and mechanical properties, but is also an important metallurgical raw material used to solve the problem of increasing depletion of global high-grade …
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Humic Substance-based Binder In Iron Ore Pelletization: A …
However, humic substance-based binders were not commonly used in pelletization since some pelletizing results indicated they were not as good asbentonite …
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Interfacial Interaction between Humic Acid and Vanadium, …
ABSTRACT Bentonite is the most common binder for the vanadium, titanium-bearing magnetite (VTM) pellet production. However, inorganic bentonite will reduce the iron grade of the finished products because about 90 wt.% bentonite is residual in them after roasted. A novel organic binder, modified humic acid (MHA), has been developed …
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A further study on adsorption interaction of humic acid on …
DOI: 10.1016/J.POWTEC.2014.10.045 Corpus ID: 93660026; A further study on adsorption interaction of humic acid on natural magnetite, hematite and quartz in iron ore pelletizing process: Effect of the solution pH value
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A Review on the Humic Substances in Pelletizing Binders: …
A Review on the Humic Substances in Pelletizing Binders: Preparation, Interaction Mechanism, and Process Characteristics. Zhao, FengShan Zhou, XinCheng Bao, SiHan Zhou, ZhongJing Wei, Wen Jun Long, Zhou Yi. Author information Keywords ... Humic acid is inexpensive, and has a wide range of sources and a strong adsorption …
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Pelletization Using Humic Substance-based Binder
Humic acid is inexpensive, and has a wide range of sources and a strong adsorption force with the surface of iron ore, and the size of its adsorption force is affected by some factors such as ...
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[PDF] A review on the humic substances in pelletizing …
Humic acid is inexpensive, and has a wide range of sources and a strong adsorption force with the surface of iron ore, and the size of its adsorption force is affected by some …
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Effects of fulvic acid on aggregation, sedimentation, and …
Environmental behavior, bioavailability, and risks posed by Fe3O4, magnetic nanoparticles (Fe3O4 NPs) in surface waters are affected by complex geochemistry, including pH and inorganic and organic matter. This work provides a systematic analysis of adsorption of fulvic acid (FA) on surfaces of Fe3O4 NPs with …
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A Review on the Humic Substances in Pelletizing …
fired pellet strength. Therefore, humic acid pellet binder can partially or completely replace bentonite and meet the requirements of various iron ore pellet production17). 2. The extraction of humic acid from humic substances Humic acid is widely distributed in nature and is found in low-order coals such as peat, lignite,
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Effects of metal cations on the fulvic acid (FA) adsorption …
Fulvic acid is one of the important functional groups of modified humic acid (MHA) binder which is invented by the authors and can be used as an excellent composite binder in pelletizing.
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Prediction of Compressive Strength of Biomass-Humic Acid …
The influence of humic acid on the compressive strength of green and indurated pellets was explored. The results indicate that humic acid enhances the strength of green pellets but reduces that of indurated limonite pellets, which exhibit lower compressive strength compared to bentonite-based pellets.
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Investigation on Modified Humic Substances Based Binders …
Characterization of modified humic substances based binders for iron ore agglomeration was examined by chemical analysis, optical density, Fourier transform infrared spectrum (FTIR), and thermogravimetry and differential scanning calorimetry (TG–DSC). Chemical analysis displays the proportion of fulvic acid (FA) to humic acid (HA) in the binder is …
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Iron Ore Pelletizing Process: An Overview | IntechOpen
This chapter shows the status of the pelletizing process with a special focus on binders. Bentonite is the most used binder due to favorable mechanical and metallurgical pellet properties, but it contains impurities especially silica and alumina. ... MHA (fulvic acid and humic acid) Viscosity, zeta potential, pH, adsorption kinetic: Drop number ...
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"Application of Modified Humic Acid (MHA) Binder in the Pelletizing …
Modified humic acid (MHA) binder consists of high molecular weight organic molecules and inorganic part. It is extracted from lignite coal with sodium hydroxide and used in pelletization of iron ore concentrates. Our previous study shows that MHA binder is also a potential binder instead of bentonite for pelletizing of fluxed hematite.
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Interfacial reaction between humic acid and Ca …
1. Introduction. Humic acid (HA) is a kind of natural organic matters widely present in lignite, danty and natural waters (such as lakes, groundwater and rivers) (Wang et al., 2012; Kavurmaci and Bekbolet, 2013).The interaction between HA and natural mineral particles in presence of water is a very important research subject in a wide …
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Pelletization Using Humic Substance-based Binder
To compensate for this defect and make stronger pellets, cheap calcium bentonite was added into humic substance binder. In this study, a fluxed hematite …
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Effect of modified humic acid binder on pelletisation of …
A modified humic acid (MHA) binder was tested as a substitute for bentonite to prepare qualified specularite pellets. The results show that there is stronger chemisorption between organic functional groups in MHA binder molecular and specularite particles, improving the green pellet strength. MHA binder has obvious effect on the …
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A Review on the Humic Substances in Pelletizing Binders: …
A Review on the Humic Substances in Pelletizing Binders: Preparation, Interaction Mechanism, and Process Characteristics. ... and the size of its adsorption force is …
ادامه مطلبA Review on the Humic Substances in Pelletizing …
2 Humic acid is inexpensive, and has a wide range of sources and a strong adsorption force with the surface of iron ore, and the size of its adsorption force is affected by some factors such as humic
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Adsorption of Humic Acids to Mineral Particles. 2.
The adsorption of humic acid to mineral particles can be characterized by specific and electrostatic interactions and by adsorption fractionation. In this paper we focus on adsorption fractionation and the influence of the polydispersity (with respect to size) of humic acids on the adsorption process and the shape of the isotherms at different pH …
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(PDF) A Review on the Humic Substances in Pelletizing …
the pelletizing rate. Humic acid molecules contain a large . number of solidophilic and hydrophilic functional groups . such as carboxyl and hydroxyl, which improve the adsorp-
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Valorization of lignite wastes into humic acids: Process …
DOI: 10.1016/j.renene.2020.08.096 Corpus ID: 225036835; Valorization of lignite wastes into humic acids: Process optimization, energy efficiency and structural features analysis
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Humic Substance-based Binder In Iron Ore Pelletization: A …
Based on this, humic acid or humate salt were also used as binders for solid fuel agglomerates (Wen, 1986). In 1966, an amine humate salt was invented as a pelletizing aid to improve the efficiency of the rip t pelletizing process and pellet strengths (Goretta, et al., 1966). ... T., 2012a, "Optimizing the mass ratio M of two organic active ...
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Soil Systems | Free Full-Text | Sorption of Fulvic Acids and …
In real soils the interaction of humic substances with clay minerals often occurs with the participation of metal cations. The adsorption of fulvic acids (FA) solution and their solutions in the presence of heavy metal ions (Pb or Zn) on two clay minerals (kaolinite and bentonite) was investigated by measurement of the optical density …
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