PROCESS FOR OBTAINING APATITE CONCENTRATES BY FLOTATION
This Laos Patent “PROCESS FOR OBTAINING APATITE CONCENTRATES BY FLOTATION” is a public DIP intellectual-property record, filed by BPI BUNGE PARTICIPACOES E INVESTIMENTOS S/A on 2010-06-09; current status: Abandoned. Identifiers include application No. P/177; DIP id LAP177; protection kind Patent - PCT National Phase. Key dates: publication 2025-09-12. Classification: C01B 25/32. Inventor(s)/designer(s): AKIRA TAKATA, Lauro, EDUARDO DE REZENDE, Sebastiao, MATIOLO, Elves, SILVIA MARTINS, Josiane. Abstract hint: The present invention, named Bunge/Fosfertil process, is applicable at different lithologies of phosphate ore with carbonated-silica matrix…. This prose is informational only and does not constitute legal advice, ownership proof or an infringement opinion.
P/177
Mark
Key facts
- Type
- Patent
- App. no.
P/177- Status
- Abandoned
- Applicant
- BPI BUNGE PARTICIPACOES E INVESTIMENTOS S/A ； FERTILIZANTES FOSFATADOS S/A-FOSFERTIL
- Agent
- Lao Trademark Agency
- Filing date
- 2010-06-09
- Publication
- 2025-09-12
- Protection kind
- Patent - PCT National Phase
- Applicant address
- BPI BUNGE PARTICIPACOES E INVESTIMENTOS S/A · Av. Maria Coelho Aguiar 215, Bloco D, 5 Andar, Sala A, Jardim Sao Luis, 05804-900 Sao Paulo-SP · BR；FERTILIZANTES FOSFATADOS S/A-FOSFERTIL · Rodovia MG-341, km 25, Fazenda Boa Vista, 38185-000 Tapira-MG · BR
- Agent address
- Lao Trademark Agency · 148-149 Ban Sisavath Kang, Unit 16 Chanthabury District, P.O. Box: 925, Vientiane · LA
- Nice / IPC classes
- C01B 25/32
- Goods / services
- —
Process
Steps follow the current public status-
Filed
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Formal examination Refused / terminated
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Substantive examination
-
Published
-
Granted
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Abstract
The present invention, named Bunge/Fosfertil process, is applicable at different lithologies of phosphate ore with carbonated-silica matrix from igneous and sedimentary sources, i.e., consists of comminutioning the ore by crushing, homogenization, milling and disliming, prior to the apatite flotation. The dislimed and milled ore pulp with solids concentration above 40%, being initially conditioned with a depressor reactant, a vegetable source polymer gelled with sodium hydroxide solution; and subsequently, submitted to a conditioning with a scavenger reactant of the sulphosuccinate or sulphosuccinamate groups. This pulp conditioned with reactants goes to the apatite flotation in a circuit comprising the “rougher”, “scavenger”, “cleaner” and “recleaner” steps. In all steps of the circuit flotation the carbon dioxide gas may be added up to saturation of such gas in the temperature and pressure conditions of the pulp. The system to generate bubbles for flotation works independently, being feed with atmospheric air for the self-aspirated machines or compressed air for the flotation cells with air insufflations and notation columns. The final concentrate of apatite is the flotated portion of the last cleaning step of the flotation circuiut.
The present invention, named Bunge/Fosfertil process, is applicable at different lithologies of phosphate ore with carbonated-silica matrix from igneous and sedimentary sources, i.e., consists of comminutioning the ore by crushing, homogenization, milling and disliming, prior to the apatite flotation. The dislimed and milled ore pulp with solids concentration above 40%, being initially conditioned with a depressor reactant, a vegetable source polymer gelled with sodium hydroxide solution; and subsequently, submitted to a conditioning with a scavenger reactant of the sulphosuccinate or sulphosuccinamate groups. This pulp conditioned with reactants goes to the apatite flotation in a circuit comprising the “rougher”, “scavenger”, “cleaner” and “recleaner” steps. In all steps of the circuit flotation the carbon dioxide gas may be added up to saturation of such gas in the temperature and pressure conditions of the pulp. The system to generate bubbles for flotation works independently, being feed with atmospheric air for the self-aspirated machines or compressed air for the flotation cells with air insufflations and notation columns. The final concentrate of apatite is the flotated portion of the last cleaning step of the flotation circuiut.
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