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Nov 01, 2019· 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 range of geochemical and environmental fields (Lei et al ...
humic acid binder pelletizing fine coal. Dolomite Grinding Mill Machine,Processing,Sale . Dolomite Grinding Mill Machine,Processing,Sale,Manufacturer Dolomite Properties And Appliions. Dolomite is widely used in Iron Steel Industries due to its strength and compatibility in the process of purifying Iron Steel. dolomite powder can also be ...
A coal agglomerate is produced by the combination of coal fines with a binder obtained by the direct liquefaction of biomass material. The direct liquefaction is carried out in the absence of oxygen at typical temperatures between about 450 and 700° F. and typical pressures between 200 and 3,000 psi, according to known liquefaction processes.
The method of coalbriquette preparation has been described in detail elsewhere 1, 2. Briefly, the coal was impregnated with a constant binder volume (a humic acid containing inherently potassium), mixed for 30 min, dried at 110°C, pressed (1–2 kg/cm 2) and pyrolyzed in N 2 for 2 h at different temperatures: 400, 500 and 700°C. Potassium ...
In this study, alkalinized MWCNT supported MoS2 catalysts have been doublypromoted with Co and Rh. Catalysts were prepared by the conventional coimpregnation method and stabilized under argon atmosphere. Characterization of the oxidic samples by BET revealed that the mesoporosity of the pristine MWCNT support was not compromised after loading a combined total of 30 wt% metals (9 wt% K, ...
PETC`s task in this agreement was to conduct broad, baseline studies in three areas: (1) to develop a humic acid binder from AMAX subbituminous coal using the PETCdeveloped Humic Acid Binder Process, (2) to reconstitute AMAX`s dried subbituminous coal fines from the bag house and the fluidized bed dryer product with humic acid binder, and (3 ...
Jan 31, 2017· Humic substances exist widely in lignite coal as high molecular weight organic molecules. They can be used as binders in iron ore pelletization mostly in the form of salt, such as sodium humate and amine humate via extraction from lignite coal. It is worth determining if lignite can be used as a binder without extraction.
Characterization of Humic Acid Modified Bentonite Binder . Anew kind of iron ore pellet binder named humic acid modifying bentonite (HA) has been developed by the author''s group, which has the advantages of both organic HA and inorganic bentonite. The green pellet strength can be obviously improved by using the HA binder. Chat Online »
A STUDY OF LEONARDITEWATER GEL SYSTEMS by Philip H. Tufte in Chemical Engineering, University of North Dakota 1961 A Thesis Submitted to the Faculty
The invention relates to a method and apparatus of forming pellets and in particular spherical binderless pellets from lower rank coals. The method includes the steps of feeding a pelletizing means 10, with a lower rank feedstock, 1; rotating the coal in said pelletizing means, 10, to form pellets in the absence of any binder, wherein the pellets are formed by compaction and layering of coal ...
Humic Acid Organic Fertilizer Production Line Pelletizing Machine. Introduction of Fertilizer Production Line . The material enters the machine from the feed inlet at one end of the machine body, and is continuously pushed through the granulation rotor and mechanically moved with the housing to achieve the purpose of granulation.
Modified humic acid (MHA) binder based on lignite humic substances is a novel sort of promising organic binder for iron ore pellets. Humic acid (HA) is one of the main ingredients of MHA binder.
where coal is mined. They are correctly called Leonardites or oxidized Lignites. For many years the most commonly used humic product was a black liquid extract called humic acid. Humic acid is obtained by mixing a strong base liquid material like sodium hydroxide or more commonly potassium hydroxide with a dry humate material.
LIU Guogen. Study on HAtype binders for direct reduction of cold bond pellets and its raw material characteristics [D]. ... Study of the extraction of humic acid from weathered coal [J]. Chemical Industry Times, 2006, 20(6):10–12. (in ... A study of technological parameters of extract in preparation process of HA series pellet binder [J ...
Oct 07, 1986· The humic acid is extracted from oxidized carbonaceous material with a mild aqueous alkali solution of, for instance, ammonia. The particulate material is blended with the extract which serves as the binder for the agglomerates. The waterresistant agglomerates are formed such as by pelletizing, followed by drying to remove moisture and ...
Pelletizing of Iron Ore Concentrates. Table of ContentsResearch ProgramMajor VariablesApplications of Peat Moss Binder General Application The program of study of pellet binder materials was begun by the ORF in 1963 to examine various Canadian materials as substitutes for bentonite which is imported in large tonnages (199,270 tons in 1969) from the for Canadian pellet plant operations.
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. Powder Technology 2015, 271, 155166. DOI: / Dora I A Pereira, Bianca Lederer, Jonathan J Powell.
Dec 13, 2018· Humic acid is a kind of organic acid containing various functional groups produced by plants in the process of spoilage. It has colloidal properties. The humic acid binder has strong polarity and is easy to bond with the surface molecules or molecules in the micropores, this could lead to a certain strength coal briquette.
Current practice for pelletizing iron ore concentrates was developed in 1950''s during which bentonite clay was practiced as a binder and since then it has remained. Chat Online » Characterization of Humic Acid Modified Bentonite Binder . Anew kind of iron ore pellet binder named humic acid modifying bentonite (HA) has been developed by the ...
Jan 31, 2017· On the basis of Funa binder research, the extracting procedure of a humic substancebased binder was modified, and a composite binder named Modified Humic Acid (MHA)was prepared for oxidized pellets, especially for making VanadiumTitanium (VTi) magnetite pellets, and achieved qualified VTi magnetite oxidized pellets in industrial testing.
Coal Derived Additive,, Lignite, Etc. Patents (Class 524/65) Tar or pitch (Class 524/66) Plasticsbased manufactured article and process for forming. Patent number: ...
Oct 09, 2014· Senesi N, Plaza C, Brunetti G, Polo A. A comparative survey of recent results on humiclike fractions in organic amendments and effects on native soil humic substances. Soil Biol Biochem. 2007; 39 (6):1244–1262. Sharif M, Khattak RA, Sarir MS. Effect of different levels of lignitic coal derived humic acid on growth of maize plants.
Humic Acid Production Line, Humic Acid Production Line ... Alibaba offers 253 humic acid production line products. About 49% of these are granulators, 42% are organic fertilizer, and 1% are other chemical equipment. A wide variety of humic acid production line options are available to .
Humic Acid (MHA) Binder in the Pelletizing Of Fluxed Hematite Concentrate." Mineral Processing and Extractive Metallurgy Review (2017): 126131. McDonald, Jacob, and S. Komar Kawatra. "Plate Water Absorption as an Assessment Tool for Organic Binders." Mineral Processing and Extractive Metallurgy Review (2017): 250253.
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