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a humic acid binder for pelletizing of fine coal

Pelletization Using Humic Substance-based Binder Request PDF

Handling and disposal of high volume of fine coal tailings is a biggest challenge for coal washeries. Application of Modified Humic Acid (MHA) Binder in the Pelletizing Of Fluxed Hematite

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leonardite and its humic acids. The advantages of humic acid binder are that it is reasonably low in production cost, the raw materials are readily available, and it produces agglomerates that are durable and weather resistant. The use of humic acid as a binder for bituminous coal pelletizing was successfully developed and patented [2,3] by PETC.

Humic Substance-based Binder In Iron Ore Pelletization: A

On the basis of Funa binder research, the extracting procedure of a humic substance-based binder was modified, and a composite binder named Modified Humic Acid (MHA) was prepared for oxidized...

Effect of modified humic acid binder on pelletisation of

Apr 12, 2015 Abstract 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

Application of Modified Humic Acid (MHA) Binder in the

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

US5916826A Pelletizing and briquetting of coal fines

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.

Coal briquette binders find your best one from our examples

These types of binder can be work with better performance compared to one single binder. Examples of coal composite binders: Humic acid + clay; Sodium silicate + clay; etc. Binder rate and the coal briquette quality. Generally, the more the binder added to the coal

Pelletizing and briquetting of coal fines using binders

If additional residence time for these reactions of the bio-binder base 16 with all coal fines is needed, one option is to utilize a third intermediate mixer 64, to which a portion of ultra-fine coal 52, cold coal fines 54 and/or hot coal fines 56 is conveyed and mixed prior to conveying to the master mixer 28.

Analysis and Application of Oxalic Acid Modified Sodium

A humic acid binder for pelletizing of fine coal. January 1986. A preliminary cost analysis indicates that the humic acid binder can be produced for less than one half the cost of an asphalt

Mechanochemical activation of humic acids in the brown coal

The paper reports the impact of the conditions of mechanical activation for the preparation of ultra-fine coal powders with an increased content of humic acids (HA). With an optimum grinding time...

Different briquette binder for coal briquette, coke briquettes

Dec 13, 2018 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. After drying, the humate is reduced to a colloid, and the pulverized coal

Comparative study on the adsorption interactions of humic

Jan 01, 2014 An innovative binder extracted from inferior lignite, namely modified humic acid (MHA), has been invented and proven to be an effective binder

Interfacial reaction between humic acid and Ca

Nov 01, 2019 In this study, we chose HA as organic modifier for Ca-based bentonite to prepare a novel composite pellet binder named humic acid modified bentonite (HAMB) in consideration of the good adsorption capacity of HA with mineral particles (Zhou et al., 2015; Zhou et al., 2014).

The Research on Effects of Different Binders on

The use of powder materials in smelting process has some impact on the breathability of the burden, and it ultimately results in poor production and quality of industrial silicon. If pelletizing is prepared by these powder materials, it not only reduces production cost but also reuses waste effectively. It could protect forest resources productively and contributes to sustainable development

Review of briquette binders and briquetting mechanism

Feb 01, 2018 The results have shown that a humic acid solution containing 10.75 wt% nitrogen was obtained with 88.2 wt% recovery from Elbistan lignite. When coal-derived humic acid was used as a binder, production of briquette is being water-resistant and durable performance.

US5000783A Modified native starch base binder for

A binder for pelletizing particulate mineral material. The binder including about 50-99.5% modified native starch, and about 0.5-50% of water-dispersible polymer material selected from the group consisting of water-dispersible nature gums, water-dispersible pectins, water-dispersible starch derivatives, water-dispersible cellulose derivatives, water-dispersible vinyl polymers, water

Granulating of coal fines using peat SpringerLink

Oct 22, 2016 The coal fines with peat are mix and the resulting well mixed mass is then pelletizing by the application of pressure in conventional equipment stiff extrusion. The coal fines and peat was conditioned at various moisture contents to observe the effects on the finished product. The material then agglomerated into a granular product.

Method of production of concentrate of humic acid from

A known method for the production of humic acids by aqueous-alkaline extraction pre-crushed to fractions of less than 100 microns brown coal and mixing in the mixer at normal temperature conditions within 30-60 min (RF Patent No. 2051884, C05F 11/02, "a method of obtaining a humic-containing organic-mineral fertilizers", publ. 10.01.96, bull.№1).

WO1999029812A1 Coal binder produced by liquefaction of

A coal agglomerate is produced by the combination of coal fines (26) with bio-binder base (16) obtained from a biomass material (10) sized in a shredder (12) and processed by direct liquefaction in a liquefaction reactor (14) in the absence of oxygen at typical temperatures between about 230 and 370 degrees Centigrage and typical pressures between 200 and 3,000 psi, according to known

4 main factors that will influence the coal briquette quality

Coal fine briquetting conditions include briquette pressure, briquette moisture, binder type and ratio, mixing time and mixing way, material size and composition, curing way and coal briquette drying temperature, etc. But only 4 of them are the main factors.

Humic Substances in Biological Agricultural Systems

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.

Thermal treatment effect on NO reduction by potassium

Nov 01, 1999 The method of coal-briquette 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

Improving extraction yield of humic substances from

LIU Guo-gen. Study on HA-type 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

Production of ammonium nitrohumate from Elbistan lignite

Apr 01, 1997 Coal-derived humic acid was used as a binder in briquetting of Tun~bilek lignite fines. It was possible to produce water-resistant and durable briquettes. 1997 Elsevier Science Ltd. (Keywords: briquette binders; ammonium nitrohumate; lignite) Humic acid is a mixture of organic acids resulting from the controlled oxidation of carbonaceous matter

Pelletization Using Humic Substance-based Binder: Mineral

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

Humic Substance-based Binder In Iron Ore Pelletization: A

Jul 11, 2017 Humic substance as a binder in iron ore pelletization. In the earliest stage, lignite tar/pitch was used as a binder for the agglomeration of crushed solid fuels, and then it was gradually used in making pellets or briquettes of iron ores as a binder (Yohe, 1964 Yohe, G. R., 1964, “ Binding materials used in making pellets and briquets.” Industrial Minerals Note (019). pp. 1 27.

Improving extraction yield of humic substances from

LIU Guo-gen. Study on HA-type 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

Production of ammonium nitrohumate from Elbistan lignite

Apr 01, 1997 Coal-derived humic acid was used as a binder in briquetting of Tun~bilek lignite fines. It was possible to produce water-resistant and durable briquettes. 1997 Elsevier Science Ltd. (Keywords: briquette binders; ammonium nitrohumate; lignite) Humic acid is a mixture of organic acids resulting from the controlled oxidation of carbonaceous matter

Research on the Interaction of Humic Acid with Iron

Mar 11, 2018 Binder is indispensable in the production of iron ore pellets and the quality of pellets seems to be related to the interactions between binders and iron minerals. Humic acid is proved a suitable binder for iron ore pelletizing.

Granulating of coal fines using peat SpringerLink

Oct 22, 2016 The coal fines with peat are mix and the resulting well mixed mass is then pelletizing by the application of pressure in conventional equipment stiff extrusion. The coal fines and peat was conditioned at various moisture contents to observe the effects on the finished product. The material then agglomerated into a granular product.

Review of briquette binders and briquetting mechanism

Feb 01, 2018 The results have shown that a humic acid solution containing 10.75 wt% nitrogen was obtained with 88.2 wt% recovery from Elbistan lignite. When coal-derived humic acid was used as a binder, production of briquette is being water-resistant and durable performance.

Thermal treatment effect on NO reduction by potassium

Nov 01, 1999 The method of coal-briquette 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

The Research on Effects of Different Binders on

The use of powder materials in smelting process has some impact on the breathability of the burden, and it ultimately results in poor production and quality of industrial silicon. If pelletizing is prepared by these powder materials, it not only reduces production cost but also reuses waste effectively. It could protect forest resources productively and contributes to sustainable development

WO1999029812A1 Coal binder produced by liquefaction of

A coal agglomerate is produced by the combination of coal fines (26) with bio-binder base (16) obtained from a biomass material (10) sized in a shredder (12) and processed by direct liquefaction in a liquefaction reactor (14) in the absence of oxygen at typical

Review of organic binders for iron ore concentrate

Low-grade iron ores are finely ground and processed to recover iron-bearing minerals. However, the iron-rich powder is too fine to be used directly in blast furnaces and most direct reduction furnaces, and must be agglomerated or pelletized into a usable product called “pellets.” Bentonite clay has traditionally been used as a binder to make iron ore concentrate pellets, but it is

CN105254351A Water-soluble potassium humate preparing

The invention discloses a water-soluble potassium humate preparing method. The method is characterized by comprising the steps of reaction of lignite or decomposed coal, activator and potassium hydroxide, primary sedimentation, secondary sedimentation and concentration. The content of water-soluble objects in water-soluble potassium humate prepared with the method is smaller than 0.5%,

Humic Substances in Biological Agricultural Systems

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.

LEONARDITE AT RED LAKE DEPOSIT, BRITISH COLUMBIA,

high humic acid content, including weathered (oxidized) lignite, sub-bituminous coal and a variety of however they also have applications in wood stains, drilling fluid additives and as binder in iron pelletizing (Hoffman et al., 1993). To be of economic interest, raw humate or leonardite should contain a sufficient concentration of humic