CA2849653A1 - Organics removal from sedimentary phosphate ore - Google Patents
Organics removal from sedimentary phosphate ore Download PDFInfo
- Publication number
- CA2849653A1 CA2849653A1 CA2849653A CA2849653A CA2849653A1 CA 2849653 A1 CA2849653 A1 CA 2849653A1 CA 2849653 A CA2849653 A CA 2849653A CA 2849653 A CA2849653 A CA 2849653A CA 2849653 A1 CA2849653 A1 CA 2849653A1
- Authority
- CA
- Canada
- Prior art keywords
- ore
- organics
- tailings
- economics
- sedimentary phosphate
- Prior art date
- Legal status (The legal status 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 status listed.)
- Abandoned
Links
- 229910019142 PO4 Inorganic materials 0.000 title claims abstract description 15
- 239000010452 phosphate Substances 0.000 title claims abstract description 15
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 21
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 18
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 12
- 239000007787 solid Substances 0.000 claims abstract description 10
- 238000005188 flotation Methods 0.000 claims abstract description 6
- 235000017550 sodium carbonate Nutrition 0.000 claims abstract description 6
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 6
- 235000011121 sodium hydroxide Nutrition 0.000 claims abstract description 6
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 6
- 235000019353 potassium silicate Nutrition 0.000 claims abstract description 4
- 230000003750 conditioning effect Effects 0.000 claims description 16
- 238000009291 froth flotation Methods 0.000 claims description 6
- 230000014759 maintenance of location Effects 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 2
- 239000004115 Sodium Silicate Substances 0.000 claims description 2
- 239000003153 chemical reaction reagent Substances 0.000 claims description 2
- 239000011591 potassium Substances 0.000 claims description 2
- 229910052700 potassium Inorganic materials 0.000 claims description 2
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 2
- 238000001354 calcination Methods 0.000 abstract description 5
- 238000005065 mining Methods 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 238000003801 milling Methods 0.000 abstract description 3
- 239000011707 mineral Substances 0.000 abstract description 3
- 235000010755 mineral Nutrition 0.000 abstract description 3
- 239000003337 fertilizer Substances 0.000 abstract description 2
- 230000001143 conditioned effect Effects 0.000 abstract 1
- 239000002699 waste material Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003002 pH adjusting agent Substances 0.000 description 1
- 238000010979 pH adjustment Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/08—Subsequent treatment of concentrated product
- B03D1/085—Subsequent treatment of concentrated product of the feed, e.g. conditioning, de-sliming
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/02—Froth-flotation processes
- B03D1/021—Froth-flotation processes for treatment of phosphate ores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2203/00—Specified materials treated by the flotation agents; Specified applications
- B03D2203/02—Ores
- B03D2203/04—Non-sulfide ores
- B03D2203/06—Phosphate ores
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
Sedimentary phosphate ores can include organics that inhibit effective processing of ores, causing mills to discard "good" material as tailings and cut short the production, economics and life of mines. While calcining is an option, it's costly to build, energy intensive, and includes emissions.
This invention is a process for removing organics from sedimentary phosphate ores. It relates to the technical field of mineral processing (mining/fertilizer industries).
With the invented process, ore is conditioned with warm water (30-60°C) at a solids content of 25-55% and pH
adjusted to 9-11.5 (using caustic soda, soda ash, or water glass) for 15-30 minutes, followed by frother flotation to remove the organics from the ore.
This invented process can: enhance milling abilities to beneficiate ore;
increase production;
promote re-processing of tailings; increase economics and extend mine life;
reduce volumes of discarded tailings; and improve economics for new Greenfield Mining Projects.
This invention is a process for removing organics from sedimentary phosphate ores. It relates to the technical field of mineral processing (mining/fertilizer industries).
With the invented process, ore is conditioned with warm water (30-60°C) at a solids content of 25-55% and pH
adjusted to 9-11.5 (using caustic soda, soda ash, or water glass) for 15-30 minutes, followed by frother flotation to remove the organics from the ore.
This invented process can: enhance milling abilities to beneficiate ore;
increase production;
promote re-processing of tailings; increase economics and extend mine life;
reduce volumes of discarded tailings; and improve economics for new Greenfield Mining Projects.
Description
PILON, Richard A.
Description Specification This invention is entitled Organics Removal from Sedimentary Phosphate Ore, and relates to a process for removing organics from sedimentary phosphate ores to facilitate beneficiation. This invention relates to the technical field of mineral processing primarily in the mining/fertilizer industry.
The applicant is neither aware, nor able to find, any 'background art' that relates to the removal of organics from a sedimentary phosphate ore in the manner described below.
This invention is intended to provide an alternative to the calcining process which is typically energy intensive, expensive to build, poses fire risks, and includes environmental emissions.
In the mineral processing of ores from sedimentary phosphate deposits, certain organics can exhibit characteristics that inhibit the ability to process the ores effectively. In such cases, the mill may struggle to beneficiate the ore to its fullest potential and subsequently send "good"
material to the tailings waste area. This can result in lost production, lost revenue, subpar economics and shortened life of mine for existing mine/mill operations. In the case of new Greenfield Mining Projects, the inability to prove effective beneficiation of the ore can result in complete abandonment of an otherwise economic mining deposit. It is also noteworthy that in many cases where effective beneficiation of sedimentary phosphate ore has been unsuccessful, organics may not have even been identified as the culprit. Calcining has been applied in some instances to remove the organics from ore, however it is a process that is associated with many logistical and economical issues, including that it is typically costly to build, operates at extremely high temperatures making it energy intensive, it presents a fire risk, and involves emissions to the environment. An alternate process to calcining was sought to remove organics from a sedimentary phosphate ore which would facilitate effective beneficiation of the ore.
PILON, Richard A.
I have found that these organics can be separated from the ore by conditioning the ore under specific temperature, pH, percent solids and retention time, followed by removal of the organics through froth flotation. Once the organics are removed, the ore is more easily beneficiated given the appropriate milling process. This invented process to remove organics is also more user-friendly and environmentally-friendly than the calcining process.
Removal of the organics from a sedimentary phosphate ore is accomplished by first conditioning the ore to specific parameters. The parameters required for the conditioning stage include warm water of between 30-60 C, a pH adjustment to between 9 and 11.5, and a solids content in the slurry in the range from 25 to 55% solids. The ore is maintained within these conditioning parameters for a retention time of 15 to 30 minutes to release organics from the ore. The pH is adjusted using caustic soda (sodium hydroxide), soda ash (sodium carbonate), or water glass (sodium silicate); analogous potassium-based reagents can also be used. Combinations of these chemicals can also be employed depending on the composition of the process water. Higher solids contents may be used provided that the viscosity of the pulp is not too high. In such a case, a significantly longer conditioning time is required.
Once the conditioning stage is complete, froth flotation of the ore is carried out to remove the organics from the ore. The froth flotation step can be carried out under the same conditions as in the conditioning step. A frother is used to facilitate the formation of small air bubbles and to enhance the kinetics of organics flotation.
PILON, Richard A.
The necessary sequence includes two stages in this process to remove the organics from a sedimentary phosphate ore:
1. Mix the ore with warm water (30¨ 60 degrees Celsius) to a solids content in the slurry of between 25 to 55% solids, adjusting the pH to between 9 and 11.5 (using caustic soda, soda ash, or water glass), and maintaining those parameters of temperature, pH
and % solids for a conditioning retention time of the 15 to 30 minutes to release the organics from the ore.
Description Specification This invention is entitled Organics Removal from Sedimentary Phosphate Ore, and relates to a process for removing organics from sedimentary phosphate ores to facilitate beneficiation. This invention relates to the technical field of mineral processing primarily in the mining/fertilizer industry.
The applicant is neither aware, nor able to find, any 'background art' that relates to the removal of organics from a sedimentary phosphate ore in the manner described below.
This invention is intended to provide an alternative to the calcining process which is typically energy intensive, expensive to build, poses fire risks, and includes environmental emissions.
In the mineral processing of ores from sedimentary phosphate deposits, certain organics can exhibit characteristics that inhibit the ability to process the ores effectively. In such cases, the mill may struggle to beneficiate the ore to its fullest potential and subsequently send "good"
material to the tailings waste area. This can result in lost production, lost revenue, subpar economics and shortened life of mine for existing mine/mill operations. In the case of new Greenfield Mining Projects, the inability to prove effective beneficiation of the ore can result in complete abandonment of an otherwise economic mining deposit. It is also noteworthy that in many cases where effective beneficiation of sedimentary phosphate ore has been unsuccessful, organics may not have even been identified as the culprit. Calcining has been applied in some instances to remove the organics from ore, however it is a process that is associated with many logistical and economical issues, including that it is typically costly to build, operates at extremely high temperatures making it energy intensive, it presents a fire risk, and involves emissions to the environment. An alternate process to calcining was sought to remove organics from a sedimentary phosphate ore which would facilitate effective beneficiation of the ore.
PILON, Richard A.
I have found that these organics can be separated from the ore by conditioning the ore under specific temperature, pH, percent solids and retention time, followed by removal of the organics through froth flotation. Once the organics are removed, the ore is more easily beneficiated given the appropriate milling process. This invented process to remove organics is also more user-friendly and environmentally-friendly than the calcining process.
Removal of the organics from a sedimentary phosphate ore is accomplished by first conditioning the ore to specific parameters. The parameters required for the conditioning stage include warm water of between 30-60 C, a pH adjustment to between 9 and 11.5, and a solids content in the slurry in the range from 25 to 55% solids. The ore is maintained within these conditioning parameters for a retention time of 15 to 30 minutes to release organics from the ore. The pH is adjusted using caustic soda (sodium hydroxide), soda ash (sodium carbonate), or water glass (sodium silicate); analogous potassium-based reagents can also be used. Combinations of these chemicals can also be employed depending on the composition of the process water. Higher solids contents may be used provided that the viscosity of the pulp is not too high. In such a case, a significantly longer conditioning time is required.
Once the conditioning stage is complete, froth flotation of the ore is carried out to remove the organics from the ore. The froth flotation step can be carried out under the same conditions as in the conditioning step. A frother is used to facilitate the formation of small air bubbles and to enhance the kinetics of organics flotation.
PILON, Richard A.
The necessary sequence includes two stages in this process to remove the organics from a sedimentary phosphate ore:
1. Mix the ore with warm water (30¨ 60 degrees Celsius) to a solids content in the slurry of between 25 to 55% solids, adjusting the pH to between 9 and 11.5 (using caustic soda, soda ash, or water glass), and maintaining those parameters of temperature, pH
and % solids for a conditioning retention time of the 15 to 30 minutes to release the organics from the ore.
2. Froth flotation of the released organics.
A drawing of the process is included in this application which can be referenced for visual clarity. The drawing depicts a conditioning stage and a froth flotation stage.
In the conditioning stage, the sedimentary phosphate ore, warm water and chosen pH
adjuster are mixed in a conditioning tank for a retention time of 15 ¨ 30 minutes. The drawing shows the material is then sent to a flotation stage where a frother is used to facilitate formation of bubbles and enhance kinetics. The drawing depicts the flotation stage finally removing the organics from the ore.
In the right application, this invented process can effectively remove the organics from a sedimentary phosphate ore which can greatly improve a mill's ability to beneficiate the ore.
This invented process can also promote an examination of re-processing tailings waste material, further increasing the potential economics of existing mine sites. This invention can lead to substantially increasing production, improving economics, and extending the life of existing mining operations. The invention can reduce the volumes of waste material sent to tailings, as well as delay searches for new sources of ore, tailings pond expansions, and associated permitting needs. Having the ability to effectively remove the organics from a sedimentary phosphate ore can support the economics and therefore encourage the establishment of new Greenfield Mining Projects. This invention may also be useful in other mining and milling industries where performance is inhibited by organics.
A drawing of the process is included in this application which can be referenced for visual clarity. The drawing depicts a conditioning stage and a froth flotation stage.
In the conditioning stage, the sedimentary phosphate ore, warm water and chosen pH
adjuster are mixed in a conditioning tank for a retention time of 15 ¨ 30 minutes. The drawing shows the material is then sent to a flotation stage where a frother is used to facilitate formation of bubbles and enhance kinetics. The drawing depicts the flotation stage finally removing the organics from the ore.
In the right application, this invented process can effectively remove the organics from a sedimentary phosphate ore which can greatly improve a mill's ability to beneficiate the ore.
This invented process can also promote an examination of re-processing tailings waste material, further increasing the potential economics of existing mine sites. This invention can lead to substantially increasing production, improving economics, and extending the life of existing mining operations. The invention can reduce the volumes of waste material sent to tailings, as well as delay searches for new sources of ore, tailings pond expansions, and associated permitting needs. Having the ability to effectively remove the organics from a sedimentary phosphate ore can support the economics and therefore encourage the establishment of new Greenfield Mining Projects. This invention may also be useful in other mining and milling industries where performance is inhibited by organics.
Claims (6)
1. A process for removing organics from a sedimentary phosphate ore, which comprises of separating the organics from the ore through conditioning the ore under specific parameters, followed by froth flotation to remove the organics.
2. A process as defined in claim 1, in which the temperature of the conditioning stage is between 30 and 60 degrees Celsius.
3. A process as defined in claim 1, in which the pH in the conditioning stage is adjusted to between 9 and 11.5 using caustic soda (sodium hydroxide), soda ash (sodium carbonate), water glass (sodium silicate), or analogous potassium-based reagents.
4. A process as defined in claim 1, in which the solids content in the slurry during the conditioning stage is between 25 and 55% solids.
5. A process as defined in claim 1, in which the retention time of the conditioning stage is between 15 and 30 minutes.
6. A process as defined in claim 1, in which the flotation stage incorporates a frother to facilitate formation of small bubbles and enhance kinetics of organic flotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2849653A CA2849653A1 (en) | 2014-04-23 | 2014-04-23 | Organics removal from sedimentary phosphate ore |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2849653A CA2849653A1 (en) | 2014-04-23 | 2014-04-23 | Organics removal from sedimentary phosphate ore |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2849653A1 true CA2849653A1 (en) | 2015-10-23 |
Family
ID=54338580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2849653A Abandoned CA2849653A1 (en) | 2014-04-23 | 2014-04-23 | Organics removal from sedimentary phosphate ore |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2849653A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107497606A (en) * | 2017-09-13 | 2017-12-22 | 化工部长沙设计研究院 | A kind of regime of agent of phosphorus ore direct flotation roughing |
| US12180071B2 (en) | 2019-04-05 | 2024-12-31 | KOR Mineral Technologies Inc. | System and method for removing organics from phosphate ore |
-
2014
- 2014-04-23 CA CA2849653A patent/CA2849653A1/en not_active Abandoned
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107497606A (en) * | 2017-09-13 | 2017-12-22 | 化工部长沙设计研究院 | A kind of regime of agent of phosphorus ore direct flotation roughing |
| US12180071B2 (en) | 2019-04-05 | 2024-12-31 | KOR Mineral Technologies Inc. | System and method for removing organics from phosphate ore |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |
Effective date: 20200831 |