BRPI0801002A8 - SELECTIVE FLOTATION PROCESS OF CARBONATED MINERALS PRESENT IN PHOSPHATE ORE - Google Patents
SELECTIVE FLOTATION PROCESS OF CARBONATED MINERALS PRESENT IN PHOSPHATE OREInfo
- Publication number
- BRPI0801002A8 BRPI0801002A8 BRPI0801002A BRPI0801002A BRPI0801002A8 BR PI0801002 A8 BRPI0801002 A8 BR PI0801002A8 BR PI0801002 A BRPI0801002 A BR PI0801002A BR PI0801002 A BRPI0801002 A BR PI0801002A BR PI0801002 A8 BRPI0801002 A8 BR PI0801002A8
- Authority
- BR
- Brazil
- Prior art keywords
- flotation
- citric acid
- apatite
- ore
- conditioning
- Prior art date
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- Coloring Foods And Improving Nutritive Qualities (AREA)
- Fertilizers (AREA)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Non-Alcoholic Beverages (AREA)
Abstract
PROCESSO PARA UTILIZAÇÃO DO ÁCIDO CÍTRICO COMO AGENTE DEPRESSOR NA FLOTAÇÃO SELETIVA DE MINERAIS CARBONATADOS A presente invenção refere-se ao processo de flotação para o beneficiamento de minérios fosfáticos com ganga carbonatada ou sílico-carbonatada. O processo baseia-se na utilização do ácido cítrico como depressor para a apatita e caracteriza-se por apresentar as etapas de flotação direta e reversa, podendo, entretanto, apresentar as etapas de flotação cleaner e scavenger conforme as características do minério. Inicialmente a amostra do minério deve ser condicionada, se necessário, com um dispersante e um depressor para os minerais silicatados conforme as características dos minerais de ganga, por um determinado tempo. Subsequentemente deve ser feito um condicionamento com coletor aniônico adicionado na dosagem dentro da faixa de 0,1 a 1,2 kg.t-1 e mantendo-se o pH entre 8,0 e 12,0. A flotação direta nesse pH gera um concentrado rougher de apatita e calcita que deve ser condicionado por um determinado tempo com ácido cítrico, adicionado na dosagem dentro da faixa de 0,5 a 10,0 kg.t-l. O condicionamento com o ácido cítrico deve ser feito mantendo-se o pH entre 4,0 e 6,8. Pode ser feito, se necessário, outro condicionamento com coletor mantendo-se o pH entre 4,0 e 6,8 conforme as características do minério. A próxima etapa do processo consiste na flotação reversa da calcita e depressão da apatita mediante a utilização do ácido cítrico e mantendo-se o pH na faixa de 4,0 a 6,8.PROCESS FOR THE USE OF CITRIC ACID AS A DEPRESSOR AGENT IN THE SELECTIVE FLOTATION OF CARBONATE MINERALS The present invention refers to the flotation process for the beneficiation of phosphate ores with carbonated or silicocarbonated gangue. The process is based on the use of citric acid as a depressant for apatite and is characterized by the steps of direct and reverse flotation, although it may also include steps of cleaner and scavenger flotation depending on the ore characteristics. Initially, the ore sample must be conditioned, if necessary, with a dispersant and a depressant for silicate minerals according to the characteristics of the gangue minerals, for a certain time. Subsequently, conditioning must be carried out with an anionic collector added at a dosage within the range of 0.1 to 1.2 kg.t-1 and maintaining the pH between 8.0 and 12.0. Direct flotation at this pH generates a rougher concentrate of apatite and calcite that must be conditioned for a certain time with citric acid, added in dosages within the range of 0.5 to 10.0 kg.t-l. Conditioning with citric acid should be done keeping the pH between 4.0 and 6.8. If necessary, another conditioning can be carried out with a collector, keeping the pH between 4.0 and 6.8 depending on the characteristics of the ore. The next stage of the process consists of reverse flotation of calcite and depression of apatite using citric acid and maintaining the pH in the range of 4.0 to 6.8.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BRPI0801002-1A BRPI0801002B1 (en) | 2008-04-09 | 2008-04-09 | SELECTIVE FLOTATION PROCESS OF CARBONATED MINERALS PRESENT IN PHOSPHATIC ORE |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BRPI0801002-1A BRPI0801002B1 (en) | 2008-04-09 | 2008-04-09 | SELECTIVE FLOTATION PROCESS OF CARBONATED MINERALS PRESENT IN PHOSPHATIC ORE |
Publications (3)
Publication Number | Publication Date |
---|---|
BRPI0801002A2 BRPI0801002A2 (en) | 2009-11-24 |
BRPI0801002A8 true BRPI0801002A8 (en) | 2018-02-06 |
BRPI0801002B1 BRPI0801002B1 (en) | 2019-02-26 |
Family
ID=41338343
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BRPI0801002-1A BRPI0801002B1 (en) | 2008-04-09 | 2008-04-09 | SELECTIVE FLOTATION PROCESS OF CARBONATED MINERALS PRESENT IN PHOSPHATIC ORE |
Country Status (1)
Country | Link |
---|---|
BR (1) | BRPI0801002B1 (en) |
-
2008
- 2008-04-09 BR BRPI0801002-1A patent/BRPI0801002B1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
BRPI0801002A2 (en) | 2009-11-24 |
BRPI0801002B1 (en) | 2019-02-26 |
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