The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 11, 2011
Filed:
Dec. 27, 2006
Luiz Alberto Medeiros Novicki, São Mateus do Sul, BR;
Valmor Neves Vieira, São Mateus do Sul, BR;
Waldemar Jiro Torii, Curitiba, BR;
Clenio Nailto Pillon, Centro Pelotas, BR;
Walkyria Bueno Scivittaro, Centro Pelotas, BR;
Luiz Alberto Medeiros Novicki, São Mateus do Sul, BR;
Valmor Neves Vieira, São Mateus do Sul, BR;
Waldemar Jiro Torii, Curitiba, BR;
Clenio Nailto Pillon, Centro Pelotas, BR;
Walkyria Bueno Scivittaro, Centro Pelotas, BR;
Petroleo Brasileiro S.A.-Petrobras, Rio De Janeiro, BR;
Empresa Brasileira de Pesquisa Agropecuaria-Embrapa, Brasilia DF, BR;
Abstract
The present invention relates to obtaining a fertilizer with sustained release of phosphorus, enriched with other macro and micronutrients, which can be produced by pyrolysis of pyrobituminous shale, in combination with calcareous shale and with natural phosphatidic rocks. The invention presents a process for obtaining a solid fertilizer with sustained release of phosphorus, enriched with Ca, Mg, S, Si and micronutrients, by a combination of pyrolysis of a pyrobituminous shale at a temperature of 450-500° C., with the addition of calcareous shale and of a phosphatidic rock, which represents a promising innovation compared to the prior art, and will certainly serve to fill a gap in the availability of fertilizers permitted for use in agroecological systems.