WO2006010721A2 - Dust suppression and reduction of surface oxidation for mineral agglomerates - Google Patents

Dust suppression and reduction of surface oxidation for mineral agglomerates Download PDF

Info

Publication number
WO2006010721A2
WO2006010721A2 PCT/EP2005/053439 EP2005053439W WO2006010721A2 WO 2006010721 A2 WO2006010721 A2 WO 2006010721A2 EP 2005053439 W EP2005053439 W EP 2005053439W WO 2006010721 A2 WO2006010721 A2 WO 2006010721A2
Authority
WO
WIPO (PCT)
Prior art keywords
mineral substrate
dust suppressant
dust
oil
pellets
Prior art date
Application number
PCT/EP2005/053439
Other languages
French (fr)
Other versions
WO2006010721A3 (en
Inventor
Susan Margaret Hey
Stephen Adkins
Martin Geoffrey Neale
Paul Stocks
Original Assignee
Ciba Specialty Chemicals Water Treatments Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ciba Specialty Chemicals Water Treatments Limited filed Critical Ciba Specialty Chemicals Water Treatments Limited
Priority to AU2005266371A priority Critical patent/AU2005266371A1/en
Priority to US11/631,552 priority patent/US20080028890A1/en
Priority to CA002573964A priority patent/CA2573964A1/en
Priority to BRPI0513860-4A priority patent/BRPI0513860A/en
Priority to EP05772038A priority patent/EP1769091A2/en
Publication of WO2006010721A2 publication Critical patent/WO2006010721A2/en
Publication of WO2006010721A3 publication Critical patent/WO2006010721A3/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • C22B1/24—Binding; Briquetting ; Granulating
    • C22B1/2406—Binding; Briquetting ; Granulating pelletizing
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • C22B1/24—Binding; Briquetting ; Granulating
    • C22B1/242—Binding; Briquetting ; Granulating with binders
    • C22B1/244—Binding; Briquetting ; Granulating with binders organic

Definitions

  • the present invention relates to a composition consisting essentially of a mineral substrate and a dust suppressant, which is adhered to the surface of the mineral substrate, and to methods of reducing dust generation of a mineral substrate by applying a dust suppressant to the surface of the mineral substrate.
  • WO 03/052149 A1 describes iron ore pellets having incorporated saturated hydrocarbons such as paraffin oils or synthetic oils in order to make the iron ore pellets resistant to abrasion, sticking, degradation and emission of dust.
  • saturated hydrocarbons such as paraffin oils or synthetic oils
  • the saturated hydrocarbons are incorporated into the iron ore pellet at 250 * O.
  • WO 2004/099452 A1 describes iron ore pellets, wherein the surface layer of the pellets is coated with polymer or synthetic oils.
  • the amount of polymer or synthetic oil is 0.14 to 1% by weight per weight pellet.
  • the polymer or oil is applied to the pellets at 250 to 300 1 O.
  • the addition of the polymer or oil is best accomplished through the preparation of the polymer or oil diluted in 50 to 80% water.
  • the dust suppressant of WO 2004/099452 A1 has the additional disadvantage that it is applied to the iron ore pellets as a preparation diluted in 50 to 80% water.
  • This aqueous dust suppressant preparation causes spitting problems when applied to the hot iron ore pellets as it instantenously boils.
  • composition of the present invention consists essentially of a mineral substrate and a dust suppressant, which is adhered to the surface of the mineral substrate, wherein the dust suppressant is a natural or synthetic triglyceride or a mixture comprising triglycerides.
  • Triglycerides are esters of glycerine and fatty acids.
  • the triglycerides are natural such as soybean oil, sunflower oil, coconut oil, palmitic oil, cottonseed oil, castor oil etc. Further triglycerides are described e.g. in F ⁇ mpp Lexikon
  • the triglyceride is selected from the group consisting of soyabean oil, sunflower oil, coconut oil, palmitic oil, cottonseed oil, and castor oil and mixtures thereof.
  • the inventive method can be applied to all mineral substrates, which can be a source of dust.
  • all known ore pellets can be used, preferably iron-ore pellets are used.
  • the amount of dust suppressant usually can be chosen in the range of from 0.05 to 2.5% by weight per weight of the mineral substrate. Preferably it is chosen in the range of from 0.1 to 1.5% by weight per weight of the mineral substrate.
  • the dust suppressant can be adhered to at least 50% of the surface of the mineral substrate. Preferably it is adhered to at least 80% of the surface of the mineral substrate and more preferably to at least 90%.
  • the first method of the present invention of reducing dust generation of mineral substrates comprises applying a dust suppressant to the surface of a mineral substrate having a temperature in the range of from 150 to 250O in an amount in the range of 0.05 to 2.5 % by weight per weight of mineral substrate, wherein the dust suppressant is a natural or synthetic triglyceride or a mixture comprising triglycerides.
  • the mineral substrate is an ore pellet, preferably an iron-ore pellet.
  • the dust suppressant is of ambient temperature when applied to the hot pellets, but, if desired, the dust suppressant may also be of a temperature as high as the temperature of the hot pellets.
  • the dust suppressant may be applied by well-known methods in the art such as spraying or dipping etc., spraying being preferred.
  • the process can be carried out batch-wise or continuously, e.g. using a conveyor belt on which the mineral substrates or pellets are sprayed and then further cooled down or transported to its storage site.
  • triglycerides as dust suppressants.
  • the second method of the present invention of reducing dust generation of mineral substrates comprises applying a dust suppressant to the surface of a mineral substrate having a temperature in the range of from 100 to 25O 0 C in an amount in the range of 0.05 to 2.5% by weight per weight of mineral substrate, wherein the dust suppressant is applied in the form of a nonaqueous foam.
  • the dust suppressant can be a liquid nonvolatile hydrocarbon, a nonvolatile polyol, a synthetic oil or a natural or synthetic triglyceride or mixtures comprising liquid nonvolatile hydrocarbons, nonvolatile polyol, synthetic oils or triglycerides.
  • Exampes of liquid nonvolatile hydrocarbons are petroleum oil and petroleum oil products such as mineral oil.
  • E ⁇ xamples of mineral oils are fuel oils, e.g. gasoline, diesel fuel, heating oil and kerosene, and lubricating oils.
  • nonvolatile polyols are glycol and polyethyleneglycol.
  • An example of a synthetic oil is silica oil. - A -
  • the dust suppressant is a natural or synthetic triglyceride or a mixture comprising triglycerides. More preferably, the dust suppressant is a natural triglyceride or a mixture comprising a natural triglyceride. [Examples of natural triglycerides are given above. Most preferably, the dust suppressant is selected from the group consisting of soyabean oil, sunflower oil, coconut oil, palmitic oil, cottonseed oil and castor oil or mixtures thereof.
  • the mineral substrate has a temperature in the range of from 150 to 250 0 C.
  • the dust suppressant is preferably applied in the presence of a surfactant.
  • suitables surfactants are HCF-740, which is a mixture of fluorosurfactants and hydrocarbon solvent, HCF-730, which is a nonionic mixture of silane surfactants, HCF-720, which is a nonionic mixtuture of silane surfactants and fluorosurfactants and HCF-710, which is a nonionic mixture of silane surfactants and sulfonic acids, all sold by Clearwater.
  • the surfactant can be used in amounts of 0.2 to 5% by weight per weight of dust suppressant. Preferably, it is used in amounts of 0.5 to 2.5% w/w and more preferably in amounts of 1 to 2% w/w.
  • the dust suppressant nonaqueous foam cah be applied to the mineral substrate by dipping the mineral substrate onto the surface of the foam or by passing it through the foam, which can be either a static or moving mass.
  • the foam can be applied to a moving mass of mineral substrate, e.g. at a transfer point on a conveyor belt.
  • the dust suppressant nonaqueous foam is of ambient temperature when applied to the hot pellets, but, if desired, the dust suppressant may also be of a temperature as high as the temperature of the hot pellets.
  • the mineral substrate is an ore pellet, preferably an iron-ore pellet.
  • Dust suppressants in the form of a nonaqueous oil.
  • Dust suppressant is as defined for the second method of reducing dust generation of mineral substrates.
  • the dust suppressant nonaqueous foam of the present invention has the advantage that it does not cause spitting when applied to hot mineral substrates. In addition, it avoids the enhalatio ⁇ risks connected with spraying a dust suppressant and also allows an enhanced control of the amount of adhered dust suppressant and a better distribution of the dust suppressant on the pellets, when very low amounts of adhered dust suppressant are desired.
  • Example 1 1.1. Preparation of a composition of iron ore pellets and soyabean oil using sprayed oil
  • 35 of the thus treated pellets are then selected, weighed (111.94 g) and afterwards transferred to a sealable metal tube (6.5 cm diameter by 17.5 cm length).
  • a sealable metal tube 6.5 cm diameter by 17.5 cm length.
  • the tube and its contents are then tumbled, end-to-end, in a Roaches "Dye Bath” for 2 hours at ambient temperature. Thereafter, the contents of the tube are transferred on a 500um sieve, where the fine material is separated from the remaining pellets.
  • Example 1.1 Preparation of a composition of iron ore pellets and sunflower oil using sprayed oil Example 1.1 is repeated, except that sunflower oil is used instead of soybean oil, the number of pellets is 35, the total weight of the pellets is 130.79 g and the amount of oil is 0.21% by weight per weight of pellets.
  • Example 1.2 is repeated.
  • the total weight of fine material is 0.98% by weight per weight of the untumbled pellets.
  • a colour change from grey (plant fired pellet) to red (rustic) is an indication of surface oxidation also infer that surface oxidation is reduced when sunflower oil is used instead of water.
  • Example 1 is repeated, however the 35 pellets employed (total weight 129.70 g) are not treated with a dust suppressant.
  • the percentage of fine material is 5.56% by weight per weight of untumbled pellets.
  • the thus treated pellets are weighed and transferred to a sealable metal tube (6.5 cm diameter by 17.5 cm length).
  • a sealable metal tube 6.5 cm diameter by 17.5 cm length.
  • the tube and its contents are then tumbled, end-to-end, in a Roaches "Dye Bath" for 2 hours at ambient temperature. Thereafter, the contents of the tube are transferred on a 4 mm sieve, where the fine material ( ⁇ 4 mm) is separated from the remaining pellets. The weight of the fine material is measured and the percentage (weight fine material/weight untumbled pellets)x100 is calculated.
  • Example 3 is repeated except that SN 150, a paraffin oil, is used instead of soyabean oil, and
  • Example 3 is repeated, however the 35 pellets employed are not treated with a dust suppressant.
  • Table 1 Dust measurement and pellet surface observation of iron ore pellets treated with foamed oils.
  • oils can be successfully applied as a foam to reduce dust generation and surface oxidation of iron ore pellets.
  • Soyabean oil was more effective than paraffin oil at equivalent dosages.

Abstract

The present invention provides a composition consisting essentially of a mineral substrate and a dust suppresant, which is adhered to the surface of the mineral substrate, and methods of reducing dust generation of a mineral substrate by applying a dust suppresant to the surface of the mineral substrate. The dust suppresant is a natural or synthetic triglyceride.

Description

Dust Suppression and Reduction of Surface Oxidation for Mineral Agglomerates
The present invention relates to a composition consisting essentially of a mineral substrate and a dust suppressant, which is adhered to the surface of the mineral substrate, and to methods of reducing dust generation of a mineral substrate by applying a dust suppressant to the surface of the mineral substrate.
WO 03/052149 A1 describes iron ore pellets having incorporated saturated hydrocarbons such as paraffin oils or synthetic oils in order to make the iron ore pellets resistant to abrasion, sticking, degradation and emission of dust. The saturated hydrocarbons are incorporated into the iron ore pellet at 250 *O.
WO 2004/099452 A1 describes iron ore pellets, wherein the surface layer of the pellets is coated with polymer or synthetic oils. The amount of polymer or synthetic oil is 0.14 to 1% by weight per weight pellet. The polymer or oil is applied to the pellets at 250 to 3001O. The addition of the polymer or oil is best accomplished through the preparation of the polymer or oil diluted in 50 to 80% water.
The disadvantages of dust suppressants described in WO 03/052149 A1 and WO 2004/099452 A1 are they are saturated hydrocarbons or synthetic oils that are not very convenient to work with. They can be toxic and flammable and thus represent a health risk and they are usually not biodegradable and thus can cause environmental problems when spilt or lost due to wind carry.
Therefore, it is an object of this invention to provide a composition consisting essentially of a mineral substrate and a dust suppressant, which is adhered to the surface of the mineral substrate, wherein the dust suppressant is biodegradable and does not constitute a health risk.
This object is solved by the composition according to claim 1 and the method according to claim 7.
The dust suppressant of WO 2004/099452 A1 has the additional disadvantage that it is applied to the iron ore pellets as a preparation diluted in 50 to 80% water. This aqueous dust suppressant preparation causes spitting problems when applied to the hot iron ore pellets as it instantenously boils.
Therefore, it is a further object of this invention to provide a more convenient method of applying dust suppressants.
This object is solved by the method according to claim 9.
The composition of the present invention consists essentially of a mineral substrate and a dust suppressant, which is adhered to the surface of the mineral substrate, wherein the dust suppressant is a natural or synthetic triglyceride or a mixture comprising triglycerides.
Triglycerides are esters of glycerine and fatty acids. In a preferred embodiment the triglycerides are natural such as soybean oil, sunflower oil, coconut oil, palmitic oil, cottonseed oil, castor oil etc. Further triglycerides are described e.g. in Fδmpp Lexikon
Chemie, 10th edition, p. 1320 f., Georg Thieme Verlag. In a particular preferred embodiment the triglyceride is selected from the group consisting of soyabean oil, sunflower oil, coconut oil, palmitic oil, cottonseed oil, and castor oil and mixtures thereof.
The inventive method can be applied to all mineral substrates, which can be a source of dust. In particular, all known ore pellets can be used, preferably iron-ore pellets are used.
The amount of dust suppressant usually can be chosen in the range of from 0.05 to 2.5% by weight per weight of the mineral substrate. Preferably it is chosen in the range of from 0.1 to 1.5% by weight per weight of the mineral substrate.
The dust suppressant can be adhered to at least 50% of the surface of the mineral substrate. Preferably it is adhered to at least 80% of the surface of the mineral substrate and more preferably to at least 90%.
The first method of the present invention of reducing dust generation of mineral substrates comprises applying a dust suppressant to the surface of a mineral substrate having a temperature in the range of from 150 to 250O in an amount in the range of 0.05 to 2.5 % by weight per weight of mineral substrate, wherein the dust suppressant is a natural or synthetic triglyceride or a mixture comprising triglycerides.
Preferably, the mineral substrate is an ore pellet, preferably an iron-ore pellet.
Generally, the dust suppressant is of ambient temperature when applied to the hot pellets, but, if desired, the dust suppressant may also be of a temperature as high as the temperature of the hot pellets.
The dust suppressant may be applied by well-known methods in the art such as spraying or dipping etc., spraying being preferred.
The process can be carried out batch-wise or continuously, e.g. using a conveyor belt on which the mineral substrates or pellets are sprayed and then further cooled down or transported to its storage site.
Usually the thus treated pellets are cooled down to ambient temperature and then can be stored, transported or further treated as desired.
Also part of the invention is the use of triglycerides as dust suppressants.
The second method of the present invention of reducing dust generation of mineral substrates comprises applying a dust suppressant to the surface of a mineral substrate having a temperature in the range of from 100 to 25O0C in an amount in the range of 0.05 to 2.5% by weight per weight of mineral substrate, wherein the dust suppressant is applied in the form of a nonaqueous foam.
The dust suppressant can be a liquid nonvolatile hydrocarbon, a nonvolatile polyol, a synthetic oil or a natural or synthetic triglyceride or mixtures comprising liquid nonvolatile hydrocarbons, nonvolatile polyol, synthetic oils or triglycerides. Exampes of liquid nonvolatile hydrocarbons are petroleum oil and petroleum oil products such as mineral oil. EΞxamples of mineral oils are fuel oils, e.g. gasoline, diesel fuel, heating oil and kerosene, and lubricating oils. Examples of nonvolatile polyols are glycol and polyethyleneglycol. An example of a synthetic oil is silica oil. - A -
Preferably, the dust suppressant is a natural or synthetic triglyceride or a mixture comprising triglycerides. More preferably, the dust suppressant is a natural triglyceride or a mixture comprising a natural triglyceride. [Examples of natural triglycerides are given above. Most preferably, the dust suppressant is selected from the group consisting of soyabean oil, sunflower oil, coconut oil, palmitic oil, cottonseed oil and castor oil or mixtures thereof.
Preferably, the mineral substrate has a temperature in the range of from 150 to 2500C.
The dust suppressant is preferably applied in the presence of a surfactant. Examples of suitables surfactants are HCF-740, which is a mixture of fluorosurfactants and hydrocarbon solvent, HCF-730, which is a nonionic mixture of silane surfactants, HCF-720, which is a nonionic mixtuture of silane surfactants and fluorosurfactants and HCF-710, which is a nonionic mixture of silane surfactants and sulfonic acids, all sold by Clearwater.
The surfactant can be used in amounts of 0.2 to 5% by weight per weight of dust suppressant. Preferably, it is used in amounts of 0.5 to 2.5% w/w and more preferably in amounts of 1 to 2% w/w.
The dust suppressant nonaqueous foam cah be applied to the mineral substrate by dipping the mineral substrate onto the surface of the foam or by passing it through the foam, which can be either a static or moving mass. Alternatively, the foam can be applied to a moving mass of mineral substrate, e.g. at a transfer point on a conveyor belt.
Generally, the dust suppressant nonaqueous foam is of ambient temperature when applied to the hot pellets, but, if desired, the dust suppressant may also be of a temperature as high as the temperature of the hot pellets.
Preferably, the mineral substrate is an ore pellet, preferably an iron-ore pellet.
Also part of the invention are dust suppressants in the form of a nonaqueous oil. Dust suppressant is as defined for the second method of reducing dust generation of mineral substrates. The dust suppressant nonaqueous foam of the present invention has the advantage that it does not cause spitting when applied to hot mineral substrates. In addition, it avoids the enhalatioπ risks connected with spraying a dust suppressant and also allows an enhanced control of the amount of adhered dust suppressant and a better distribution of the dust suppressant on the pellets, when very low amounts of adhered dust suppressant are desired.
Examples
Example 1 : 1.1. Preparation of a composition of iron ore pellets and soyabean oil using sprayed oil
40 plant-fired spherical iron ore pellets, (diameter from 10 to 14 mm; total weight 133.92 g) are heated to 200O for 1 hour (in order to simulate the temperature after leaving the furnace). The hot pellets are transferred to a wire basket and sprayed with soyabean oil, which is at ambient temperature, six times, the total amount of sprayed oil being 1.59 g or 1.19% by weight per total weight of the pellets. The contents of the wire basket are then gently agitated, by hand, for a few seconds to increase transfer of the oil from surface to surface. Thereafter the pellets are further cooled down to ambient temperature without further agitation.
1.2. Dust measurement
35 of the thus treated pellets are then selected, weighed (111.94 g) and afterwards transferred to a sealable metal tube (6.5 cm diameter by 17.5 cm length). In order to simulate handling of the pellets the tube and its contents are then tumbled, end-to-end, in a Roaches "Dye Bath" for 2 hours at ambient temperature. Thereafter, the contents of the tube are transferred on a 500um sieve, where the fine material is separated from the remaining pellets. The final weight of these 35 pellets is 110.41 g, and the fine material (<500um), is 1.53 g or (1.53/111.94)x100 = 1.37% by weight per weight of the untumbled pellets.
1.3. Pellet Surface Observation A colour change from grey (plant fired pellet) to red (rustic) is an indication of surface oxidation. This change is quantifiable from a visual perspective (% surface coverage). The treatments noted here infer that surface oxidation is reduced when soyabean oil is used instead of water. Example 2:
2.1. Preparation of a composition of iron ore pellets and sunflower oil using sprayed oil Example 1.1 is repeated, except that sunflower oil is used instead of soybean oil, the number of pellets is 35, the total weight of the pellets is 130.79 g and the amount of oil is 0.21% by weight per weight of pellets.
2.2. Dust measurement
Example 1.2. is repeated. The total weight of fine material is 0.98% by weight per weight of the untumbled pellets.
2.3. Pellet Surface Observation
A colour change from grey (plant fired pellet) to red (rustic) is an indication of surface oxidation also infer that surface oxidation is reduced when sunflower oil is used instead of water.
Comparative example 1 :
Example 1 is repeated, however the 35 pellets employed (total weight 129.70 g) are not treated with a dust suppressant. The percentage of fine material is 5.56% by weight per weight of untumbled pellets.
Example 3:
3.1. Preparation of a composition of iron ore pellets and soybean oil using foamed oil Nitrogen is bubbled in a mixture of 100 mL soyabean oil and 2 mL HCF-740, a mixture of fluorosurfactants and hydrocarbon solvent, which is sold by Clearwater in order to generate a stable foam. 35 plant fired spherical iron ore pellets (6.5 cm diameter by 17.5 cm length) are heated to 2000C for 1 hour (in order to simulate the temperature after leaving the furnace). The hot pellets are transferred to a wire basket and dipped onto the surface of the foamed oil, which has ambient temperature. The total amount of oil being adhered to the pellets is measured and the percentage (weight adhered oil/weight pellets)x100 is calculated. The contents of the wire basket are then gently agitated, by hand, for a few seconds to increase transfer of the oil from surface to surface. Thereafter the pellets are further cooled down to ambient temperature without further agitation. 3.2. Dust measurement
The thus treated pellets are weighed and transferred to a sealable metal tube (6.5 cm diameter by 17.5 cm length). In order to simulate handling of the pellets the tube and its contents are then tumbled, end-to-end, in a Roaches "Dye Bath" for 2 hours at ambient temperature. Thereafter, the contents of the tube are transferred on a 4 mm sieve, where the fine material (<4 mm) is separated from the remaining pellets. The weight of the fine material is measured and the percentage (weight fine material/weight untumbled pellets)x100 is calculated.
Example 4:
Preparation of a composition of iron ore pellets and paraffin oil using foamed oil
Example 3 is repeated except that SN 150, a paraffin oil, is used instead of soyabean oil, and
1 ml_ HCF-740 instead of 2 ml_.
Comparative example 2:
Example 3 is repeated, however the 35 pellets employed are not treated with a dust suppressant.
Figure imgf000008_0001
Table 1: Dust measurement and pellet surface observation of iron ore pellets treated with foamed oils.
The results show that oils can be successfully applied as a foam to reduce dust generation and surface oxidation of iron ore pellets. Soyabean oil was more effective than paraffin oil at equivalent dosages.

Claims

Claims
1. Composition consisting essentially of a mineral substrate and a dust suppressant, which is adhered to the surface of the mineral substrate, wherein the dust suppressant is a natural or synthetic triglyceride or a mixture comprising triglycerides.
2. Composition according to claim 1, wherein the dust suppressant is a natural triglyceride or a mixture comprising natural triglycerides.
3. Composition according to claim 1 or 2, wherein the mineral substrate is an ore pellet.
4. Composition according to any of claims 1 to 3, wherein the mineral substrate is an iron-ore pellet.
5. Composition according to any of claims 1 to 4, wherein the amount of dust suppressant is chosen in the range of from 0.05 to 2.5% by weight per weight pellet.
6. Composition according to any of claims 1 to 5, wherein the dust suppressant is adhered to at least 80% of the surface of the mineral substrate.
7. Method of reducing dust generation of mineral substrate comprising applying a dust suppressant to the surface of a mineral substrate having a temperature in the range of from 150 to 2500C and an amount in a range of 0.05 to 2.5% by weight per weight of mineral substrate, wherein the dust suppressant is a natural or synthetic triglyceride or a mixture comprising triglycerides.
8. Use of triglycerides as dust suppressants.
9. Method of reducing dust generation of mineral substrate comprising applying a dust suppressant to the surface of a mineral substrate having a temperature in the range of from 100 to 2500C and an amount in a range of 0.05 to 2.5% by weight per weight of mineral substrate, wherein the dust suppressant is applied in the form of a nonaqueous foam.
10. Method according to claim 9, wherein the dust suppressant is applied in the presence of a surfactant.
11. Method according to claim 9 and 10 wherein the dust suppressant is a natural or synthetic triglyceride or a mixture comprising triglycerides.
12. Method according to any of claims 9 to 11, wherein the mineral substrate is an ore pellet.
13. Method according to claim 12, wherein the ore pellet is an iron-ore pellet.
14. Dust suppressant in the form of a nonaqueous foam.
PCT/EP2005/053439 2004-07-27 2005-07-18 Dust suppression and reduction of surface oxidation for mineral agglomerates WO2006010721A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AU2005266371A AU2005266371A1 (en) 2004-07-27 2005-07-18 Dust suppression and reduction of surface oxidation for mineral agglomerates
US11/631,552 US20080028890A1 (en) 2004-07-27 2005-07-18 Dust Suppression and Reduction of Surface Oxidation for Mineral Agglomerates
CA002573964A CA2573964A1 (en) 2004-07-27 2005-07-18 Dust suppression and reduction of surface oxidation for mineral agglomerates
BRPI0513860-4A BRPI0513860A (en) 2004-07-27 2005-07-18 dust elimination and reduction of surface oxidation of mineral agglomerates
EP05772038A EP1769091A2 (en) 2004-07-27 2005-07-18 Dust suppression and reduction of surface oxidation for mineral agglomerates

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0416700.3A GB0416700D0 (en) 2004-07-27 2004-07-27 Dust suppresson and reduction of surface oxidation for mineral agglomerates
GB0416700.3 2004-07-27

Publications (2)

Publication Number Publication Date
WO2006010721A2 true WO2006010721A2 (en) 2006-02-02
WO2006010721A3 WO2006010721A3 (en) 2006-08-10

Family

ID=32947489

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/053439 WO2006010721A2 (en) 2004-07-27 2005-07-18 Dust suppression and reduction of surface oxidation for mineral agglomerates

Country Status (8)

Country Link
US (1) US20080028890A1 (en)
EP (1) EP1769091A2 (en)
CN (1) CN1989261A (en)
AU (1) AU2005266371A1 (en)
BR (1) BRPI0513860A (en)
CA (1) CA2573964A1 (en)
GB (1) GB0416700D0 (en)
WO (1) WO2006010721A2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010121338A1 (en) * 2009-04-20 2010-10-28 Vale S.A. Process for inhibiting particulate emission during friction of heat-treated iron ore pellets and use of an alcohol by-product to inhibit particulate emission
WO2011127548A1 (en) 2010-04-16 2011-10-20 Vale S.A. Process for application of alcoholic derivative on heat treated pellets for inhibition of particulate emission and system for application of alcoholic derivative on heat treated pellets for inhibition of particulate emission
US9045809B2 (en) 2012-05-05 2015-06-02 Nu-Iron Technology, Llc Reclaiming and inhibiting activation of DRI fines

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CL2010000073A1 (en) * 2009-01-29 2011-01-07 Midwest Ind Supply Inc Composition for chemical improvement of the soil comprising a synthetic fluid and a pour point reducer; composition comprising synthetic fluid, biodegradable material and synthetic fibers; composition comprising a base oil and polyisobutylene; composition comprising synthetic fluid and a binder; Application Method.
US8177997B2 (en) 2009-01-29 2012-05-15 Midwest Industrial Supply, Inc. Chemical method and composition for soil improvement
US8210769B2 (en) 2009-03-31 2012-07-03 Midwest Industrial Supply, Inc. Method and composition for modifying soil and dust control
US8033750B2 (en) * 2009-03-31 2011-10-11 Midwest Industrial Supply, Inc. Method and composition for modifying soil and dust control
US8066448B2 (en) 2009-03-31 2011-11-29 Midwest Industrial Supply, Inc. Dust suppression agent
WO2011140413A2 (en) 2010-05-07 2011-11-10 Midwest Industrial Supply, Inc. Method and composition for road construction and surfacing
US8702343B1 (en) 2012-12-21 2014-04-22 Midwest Industrial Supply, Inc. Method and composition for road construction and surfacing
EP3199501B1 (en) * 2016-01-29 2023-06-07 Daw Se Dust-reduced powdery mixtures
US20190017229A1 (en) * 2017-07-17 2019-01-17 Investment Bikers, LLC d/b/a Petraviam Method and system for strengthening and hardening unpaved surfaces

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2833642A (en) * 1954-11-10 1958-05-06 Gen Mills Inc Binder additive for making ore pellets
DD118669A1 (en) * 1975-03-27 1976-03-12
JPS59166579A (en) * 1982-12-28 1984-09-19 Neos Co Ltd Rust preventing and dust-proofing agent for pig iron grain recovered from slag
WO2003052149A1 (en) * 2001-12-17 2003-06-26 Samarco Mineração S/A. Iron-ore pellets with reduced abrasion, sticking, degradation and dust emission, and a process for producing them

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE837659A (en) * 1975-01-17 1976-05-14 SURFACE CONSOLIDATION
US4780233A (en) * 1987-09-04 1988-10-25 Betz Laboratories, Inc. Dust suppression methods and compositions
US5147452A (en) * 1991-04-24 1992-09-15 Betz Laboratories, Inc. Method of agglomerating mineral ore concentrate

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2833642A (en) * 1954-11-10 1958-05-06 Gen Mills Inc Binder additive for making ore pellets
DD118669A1 (en) * 1975-03-27 1976-03-12
JPS59166579A (en) * 1982-12-28 1984-09-19 Neos Co Ltd Rust preventing and dust-proofing agent for pig iron grain recovered from slag
WO2003052149A1 (en) * 2001-12-17 2003-06-26 Samarco Mineração S/A. Iron-ore pellets with reduced abrasion, sticking, degradation and dust emission, and a process for producing them

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 009, no. 017 (C-262), 24 January 1985 (1985-01-24) & JP 59 166579 A (NEOSU:KK; others: 01), 19 September 1984 (1984-09-19) *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010121338A1 (en) * 2009-04-20 2010-10-28 Vale S.A. Process for inhibiting particulate emission during friction of heat-treated iron ore pellets and use of an alcohol by-product to inhibit particulate emission
RU2532771C2 (en) * 2009-04-20 2014-11-10 Вале С.А. Inhibition method of emission of solid particles during friction of heat-treated iron-ore pellets, and use of alcohol by-product for inhibition of emission of solid particles
US9464339B2 (en) 2009-04-20 2016-10-11 Vale S.A. Process for inhibiting particulate emission during friction of heat-treated iron ore pellets and use of an alcohol by-product to inhibit particulate emission
WO2011127548A1 (en) 2010-04-16 2011-10-20 Vale S.A. Process for application of alcoholic derivative on heat treated pellets for inhibition of particulate emission and system for application of alcoholic derivative on heat treated pellets for inhibition of particulate emission
AU2011241409B2 (en) * 2010-04-16 2015-01-29 Vale S.A. Process for application of alcoholic derivative on heat treated pellets for inhibition of particulate emission and system for application of alcoholic derivative on heat treated pellets for inhibition of particulate emission
US9045809B2 (en) 2012-05-05 2015-06-02 Nu-Iron Technology, Llc Reclaiming and inhibiting activation of DRI fines

Also Published As

Publication number Publication date
EP1769091A2 (en) 2007-04-04
CN1989261A (en) 2007-06-27
WO2006010721A3 (en) 2006-08-10
CA2573964A1 (en) 2006-02-02
BRPI0513860A (en) 2008-05-20
AU2005266371A1 (en) 2006-02-02
GB0416700D0 (en) 2004-09-01
US20080028890A1 (en) 2008-02-07

Similar Documents

Publication Publication Date Title
EP1769091A2 (en) Dust suppression and reduction of surface oxidation for mineral agglomerates
ES2764967T3 (en) Modified crosslinked waxes for controlled release fertilizers
DE2026177A1 (en)
WO2012054479A1 (en) Coated fertilizer particles
EP0019795A1 (en) Powdery fire-extinguishing agent, and process for its preparation
CA2692974A1 (en) Anti-caking compositions for fertilizers
WO2003051134A3 (en) Pourable fatty dispersions
EP0630293B1 (en) Rice hull ash
JP2004515564A (en) Use of oil compositions for temporary treatment of metal surfaces
EP3120922B1 (en) Anticaking compositions for solid fertilizers, comprising quaternary ester ammonium compounds
US20210102077A1 (en) Moisture and Ultraviolet Light Barrier Composition
CN102464905A (en) Workpiece antirust emulsion
US6887282B2 (en) Tall oil pitch and fatty acid-based chemical change agent [CCA] formulation for solid and synthetic fuel production
US5348575A (en) Corrosion protection composition for metal workpieces
RU2006120160A (en) LOW SLAG, EASY TO CLEAN AND LOWLY STRUCTURED LIPID ANTI-STICK COMPOSITIONS AND METHODS
US20130291682A1 (en) Reclaiming and inhibiting activation of dri fines
US3690930A (en) Method of protecting reduced iron ore by coating
CN112513184A (en) Colloidal barrier materials and methods of making and using same
US2291460A (en) Metal coating mixture
US20180223227A1 (en) Composition For Solubilization Of Organic Residues
Yerranguntla et al. Production of Biodiesel from Guizotia abyssinica seed oil using crystalline Manganese carbonate (MnCO3) a Green catalyst
JPS6393497A (en) Water soluble agent for preventing welding spatter sticking
CN107815251A (en) A kind of protection wax and its preparation technology for preventing statue in bronze generation verdigris
JP2022157669A (en) Sprayable oil-and-fat composition
CN106244309B (en) A kind of bicontinuous antirust emulsion and preparation method thereof

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KM KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NG NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU LV MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 11631552

Country of ref document: US

Ref document number: 2005772038

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2573964

Country of ref document: CA

WWE Wipo information: entry into national phase

Ref document number: 2005266371

Country of ref document: AU

WWE Wipo information: entry into national phase

Ref document number: 200580025105.1

Country of ref document: CN

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2005266371

Country of ref document: AU

Date of ref document: 20050718

Kind code of ref document: A

WWP Wipo information: published in national office

Ref document number: 2005266371

Country of ref document: AU

WWE Wipo information: entry into national phase

Ref document number: 806/CHENP/2007

Country of ref document: IN

WWP Wipo information: published in national office

Ref document number: 2005772038

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 11631552

Country of ref document: US

ENP Entry into the national phase

Ref document number: PI0513860

Country of ref document: BR