Patents Assigned to Rotem Amfert Negev Ltd.
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Patent number: 9278890Abstract: The invention provides a continuous process for manufacturing a phosphorus/potassium fertilizer from basic chemical commodities. The fertilizer is a free-flowing solid, stable on storage, consisting mainly of a phosphate of formula KH5(P04)2.Type: GrantFiled: June 27, 2013Date of Patent: March 8, 2016Assignee: Rotem Amfert Negev Ltd.Inventors: Talia Aviv, Uri Sasson Cohen, Doron Orgil, Itsik Aroch
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Patent number: 9216930Abstract: The invention provides a continuous process for manufacturing an essentially neutral phosphorus/potassium rich fertilizer from basic chemical commodities. The fertilizer is a freely-flowing particulate solid.Type: GrantFiled: June 27, 2013Date of Patent: December 22, 2015Assignee: Rotem Amfert Negev Ltd.Inventors: Talia Aviv, Uri Sasson Cohen, Doron Orgil, Itsik Aroch
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Patent number: 9067835Abstract: Abstract Provided is a freely flowing particulate fertilizer essentially consisting of potassium phosphate of the formula K3H3(PO4)2 and of less than 8 wt % water. The stable and not caking fertilizer is characterized by an XRD signal corresponding to 2-theta of about 70°. An economic process for making the fertilizer is also provided.Type: GrantFiled: June 4, 2013Date of Patent: June 30, 2015Assignee: ROTEM AMFERT NEGEV LTD.Inventors: Alexander Josef, Itshak Zukerman
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Patent number: 8475558Abstract: Provided is a freely flowing particulate fertilizer essentially consisting of potassium phosphate of the formula K3H3(PO4)2 and of less than 8 wt % water. The stable and not caking fertilizer is characterized by an XRD signal corresponding to 2-theta of about 70°. An economic process for making the fertilizer is also provided consisting in reacting KOH and monopotassium phosphate (KH2PO4) in water, heating the mixture under vacuum and cooling it down, thereby obtaining the particulate fertilizer.Type: GrantFiled: November 13, 2008Date of Patent: July 2, 2013Assignee: Rotem Amfert Negev Ltd.Inventors: Alexander Josef, Itshak Zukerman
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Publication number: 20130130896Abstract: Provided is an environmentally friendly and broadly applicable method for protecting plants or crop against pests and diseases by successive foliar sprays with aqueous liquids exhibiting high acidity or basicity. The sprays provide protection, and further supply the plant with phosphorus and potassium.Type: ApplicationFiled: August 4, 2011Publication date: May 23, 2013Applicant: ROTEM AMFERT NEGEV LTD.Inventor: Luiz Dimenstein
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Patent number: 7967889Abstract: A solid free-flowing particulate fertilizer composition is provided, as well as a method of manufacturing same. The composition has low tendency to caking, is easy for storage and manipulation, dissolves rapidly and completely in water, and can be used directly as a fertilizer or serves in the preparation of concentrated aqueous fertilizer compositions comprising otherwise scarcely soluble nutrients.Type: GrantFiled: March 8, 2007Date of Patent: June 28, 2011Assignee: Rotem Amfert Negev Ltd.Inventors: Alexander Yosef, Yakkov Oren, Yair Yagil
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Publication number: 20100311584Abstract: Provided is a freely flowing particulate fertilizer essentially consisting of potassium phosphate of the formula K3H3(PO4)2 and of less than 8 wt % water. The stable and not caking fertilizer is characterized by an XRD signal corresponding to 2-theta of about 70°. An economic process for making the fertilizer is also provided consisting in reacting KOH and monopotassium phosphate (KH2PO4) in water, heating the mixture under vacuum and cooling it down, thereby obtaining the particulate fertilizer.Type: ApplicationFiled: November 13, 2008Publication date: December 9, 2010Applicant: ROTEM AMFERT NEGEV LTD.Inventors: Alexander Josef, Itshak Zukerman
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Patent number: 7828871Abstract: The present invention provides fertilizer compositions comprising calcium and magnesium phosphates together with alkali metal double phosphates, and process for their preparation. The solid composition is freely flowing and well soluble.Type: GrantFiled: January 15, 2004Date of Patent: November 9, 2010Assignee: Rotem Amfert Negev Ltd.Inventors: Alexander Josef, Shula Tubov, Itshak Zukerman
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Publication number: 20090071212Abstract: A solid free-flowing particulate fertilizer composition is provided, as well as a method of manufacturing same. The composition has low tendency to caking, is easy for storage and manipulation, dissolves rapidly and completely in water, and can be used directly as a fertilizer or serves in the preparation of concentrated aqueous fertilizer compositions comprising otherwise scarcely soluble nutrients.Type: ApplicationFiled: March 8, 2007Publication date: March 19, 2009Applicant: ROTEM AMFERT NEGEV LTD.Inventors: Alexander Yosef, Yakkov Oren, Yair Yagil
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Patent number: 6956006Abstract: The invention relates to a composite material comprising silicon and titanium dioxide characterized by an enhanced thermal and hydrothermal stability of the pore structure. The composite is obtainable by precipitating titanium hydroxide from an aqueous solution containing sulfate salts and urea, followed by an hydrothermal treatment in the mother liquor, and by reacting the precipitate with a basic silica sol. The composite has a specific surface area of up to 228 m2/g for a material calcined at 800° C. for 3 hours, and is suitable for catalyzing a variety of reactions, including Claus reaction and degradation of organic impurities.Type: GrantFiled: February 24, 1998Date of Patent: October 18, 2005Assignee: Rotem Amfert Negev Ltd.Inventors: Yaacov W. Mirsky, Marina N Gorlova
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Publication number: 20030103889Abstract: A method for preparing thermally stable, silicon-containing titanium dioxide, said method comprising the reaction of titanium hydroxide or titanium dioxide with a silica sol, under conditions which prevent the coagulation of silica particles in said sol, to obtain silicon-containing titanium hydroxide or silicon-containing titanium dioxide, and in the case of silicon-containing titanium hydroxide, heat treating the same to obtain silicon-containing titanium dioxide.Type: ApplicationFiled: February 21, 2002Publication date: June 5, 2003Applicant: ROTEM AMFERT NEGEV LTD.Inventors: Ya?apos;acov Mirsky, Marina Gorlova
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Patent number: 5653782Abstract: The invention relates to a process for obtaining sulfur-containing fertilizers. According to the invention, a substrate containing fertilizer particles is heated to a temperature above the melting point of sulfur and subsequently by admixing with the sulfur, the latter is melted by the heat provided by said preheated fertilizer particles, producing a homogeneous coating on the fertilizer particles. According to a preferred embodiment the temperature at which the fertilizer particles are heated will be in the range of 140.degree. C. to 280.degree. C. Other materials may be added either into the phosphate or to the resulted mixture, having the purpose to modify the physical nature of the sulfur. The sulfur availability from the coated fertilizer particles may be adjusted by varying the temperature at which the fertilizer particles are heated. Typical examples of fertilizers useful for the process are: phosphate rock, superphosphate, monopotassium phosphate, triple superphosphate and potassium chloride.Type: GrantFiled: December 6, 1995Date of Patent: August 5, 1997Assignee: Rotem Amfert Negev Ltd.Inventors: Shmuel Stern, Eli Ben-Yoseph