Sebastião
Sebastião Ailton Rodrigues, Belo Horizonte - Minas Gerais BR
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20110232347 | ENHANCED PROCESS TO PRODUCE A THERMOFERTILISER FROM POTASSIUM-BEARING MINERALS - A simplified and enhanced process to produce thermofertiliser obtained from potassium and phosphorous-bearing minerals is provided, where these elements may or may not be in citric acid or insoluble in water. The process also includes the use of specific additives, at the beginning of the process or immediately before the beginning of the thermal treatment step, in order to increase the potassium and phosphorous contents in the product and the overall efficiency of the process and also to promote the production of a high quality thermofertiliser. | 09-29-2011 |
Sebastião Eduardo De Rezende, Araxa - Mg BR
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20120087850 | Process for Obtaining Apatite Concentrates by Flotation - 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 initialy 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 insufflation and notation columns. The final concentrate of apatite is the flotated portion of the last cleaning step of the flotation circuit. | 04-12-2012 |
Sebastião Eduardo De Rezende, Araxa BR
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20130200182 | PROCESS FOR OBTAINING APATITE CONCENTRATES BY FROTH FLOTATION - A process applicable to different lithologies of phosphate ore with siliceous-carbonated matrix from igneous or sedimentary origin rocks includes ore preparation by comminution through crushing, grinding, and de-sliming, prior to apatite flotation. During flotation, ground and de-slimed ore pulp with high concentration of solids, above 40%, is initially conditioned with depressant reagent, e.g., a vegetable starch gelatinized with sodium hydroxide solution, and conditioning with collector reagent (sulphosuccinate or sulphosuccinamate). This conditioned pulp floats apatite in a circuit with rougher, scavenger, cleaner and recleaner flotation steps. CO | 08-08-2013 |
Sebastião Eduardo De Rezende, Araxa BR
Patent application number | Description | Published |
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20130200182 | PROCESS FOR OBTAINING APATITE CONCENTRATES BY FROTH FLOTATION - A process applicable to different lithologies of phosphate ore with siliceous-carbonated matrix from igneous or sedimentary origin rocks includes ore preparation by comminution through crushing, grinding, and de-sliming, prior to apatite flotation. During flotation, ground and de-slimed ore pulp with high concentration of solids, above 40%, is initially conditioned with depressant reagent, e.g., a vegetable starch gelatinized with sodium hydroxide solution, and conditioning with collector reagent (sulphosuccinate or sulphosuccinamate). This conditioned pulp floats apatite in a circuit with rougher, scavenger, cleaner and recleaner flotation steps. CO | 08-08-2013 |
Sebastião Pratavieira, Sao Paulo BR
Patent application number | Description | Published |
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20140371582 | METHOD OF DEEP TISSUE IMAGING USING MULTI-PHOTON EXCITATION OF A FLUOROPHORE - A method is provided for deep tissue imaging using multi-photon excitation of a fluorescent agent. The fluorescent agent is irradiated with an ultrafast laser to produce an excited singlet state (S | 12-18-2014 |