Physicochemical properties of new solid urea-nitric phosphate fertilizers. 1. Products from nitric acid, phosphate rock, and urea

1988 ◽  
Vol 27 (5) ◽  
pp. 851-857 ◽  
Author(s):  
Jack M. Sullivan ◽  
John H. Grinstead ◽  
Yong K. Kim ◽  
Kjell R. Waerstad
Keyword(s):  
Nitric Acid ◽  
Physicochemical Properties ◽  
Phosphate Rock ◽  
Phosphate Fertilizers ◽  
Acid Phosphate

scholarly journals Looming Scarcity of Phosphate Rock and Intensification of Soil Phosphorus Research

2015 ◽  
Vol 39 (3) ◽  
pp. 637-642 ◽  
Author(s):  
Philippe C. Baveye
Keyword(s):  
Phosphate Rock ◽  
Rock Phosphate ◽  
Soil Phosphorus ◽  
Agricultural Practices ◽  
Phosphate Fertilizers ◽  
Soil P ◽  
The Past ◽  
Essential Resource ◽  
The Moment ◽  
Short Essay

In recent years, many researchers have claimed that world reserves of rock phosphate were getting depleted at an alarming rate, putting us on the path to scarcity of that essential resource within the next few decades. Others have claimed that such alarmist forecasts were frequent in the past and have always been proven unfounded, making it likely that the same will be true in the future. Both viewpoints are directly relevant to the level of funding devoted to research on the use of phosphate fertilizers. In this short essay, it is argued that information about future reserves of P or any other resource are impossible to predict, and therefore that the threat of a possible depletion of P reserves should not be used as a key motivation for an intensification of research on soil P. However, there are other, more compelling reasons, both geopolitical and environmental, to urgently step up our collective efforts to devise agricultural practices that make better use of P than is the case at the moment.

Greenhouse evaluation of phosphate fertilizers produced from Togo phosphate rock

1991 ◽  
Vol 22 (1-2) ◽  
pp. 63-73 ◽  
Author(s):  
K. Kpomblekou ◽  
S. H. Chien ◽  
J. Henao ◽  
W. A. Hill
Keyword(s):  
Phosphate Rock ◽  
Phosphate Fertilizers ◽  
Greenhouse Evaluation

Use of combined solvent extraction-electrodeposition techniques to uranium and thorium isotopes analysis in industrial phosphoric acid, phosphate and phosphogypsum by alpha-particle spectrometry

2003 ◽  
Vol 91 (1) ◽  
Author(s):  
R. Zarki ◽  
A. Elyahyaoui ◽  
A. Chiadli
Keyword(s):  
Solvent Extraction ◽  
Phosphoric Acid ◽  
Isotopic Composition ◽  
Alpha Particle ◽  
Phosphate Rock ◽  
Liquid Extraction ◽  
Acid Phosphate ◽  
Liquid Liquid Extraction ◽  
Thorium Isotopes

SummaryA method combining liquid-liquid extraction and electrodeposition procedures is carried out to determine isotopic composition of uranium and thorium in technical wet phosphoric acid, phosphate rock and phosphogypsum leachates, by

The Physicochemical Properties of Pure Nitric Acid.

1960 ◽  
Vol 60 (2) ◽  
pp. 185-207 ◽  
Author(s):  
S. Alexander Stern ◽  
J. T. Mullhaupt ◽  
Webster B. Kay
Keyword(s):  
Nitric Acid ◽  
Physicochemical Properties

scholarly journals (106)Studies on Fertilizers of Phosphate Rock-Urea-Nitric Acid System

1951 ◽  
Vol 54 (3) ◽  
pp. 210-213
Author(s):  
Shoichiro Nagai ◽  
Takafumi Kanazawa ◽  
Koji Saito
Keyword(s):  
Nitric Acid ◽  
Phosphate Rock ◽  
Acid System

scholarly journals Study of The Physicochemical and Commercial Properties of NPK Fertilizers

2021 ◽  
Vol 13 ◽  
Author(s):  
Tursunov Shahboz ◽  
Panjiev Olimjon
Keyword(s):  
Nitric Acid ◽  
Moisture Content ◽  
Acid Content ◽  
Phosphate Rock ◽  
Initial Moisture Content ◽  
Npk Fertilizers ◽  
Nitric Acid Content

Kyzylkum phosphate rock was studied with a nitric acid content of 50 and 75 and 100%, as well as in fertilizers obtained from the ratio of R2O5: K2O = 1:1. The gyroscopic points of the fertilizer size of 2-3 mm were determined at 250 ° C by the desiccator method of N.Ye. Pestov. The points of hygroscopicity of fertilizer samples with an initial moisture content of 1.0% were No. 1 - 46.5%, No. 2 - 38.0% and No. 3 - 32.4%.

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