Phosphate rock and phosphate rock/sulphur granules as phosphate fertilizers and their dissolution in soil

1987 ◽  
Vol 11 (1) ◽  
pp. 43-60 ◽  
Author(s):  
SSS Rajan
Keyword(s):  
Phosphate Rock ◽  
Phosphate Fertilizers

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

Induced phosphorus fixation and the effectiveness of phosphate fertilizers derived from Sukulu Hills phosphate rock

1995 ◽  
Vol 44 (3) ◽  
pp. 231-240 ◽  
Author(s):  
C. N. Butegwa ◽  
G. L. Mullins ◽  
S. H. Chien
Keyword(s):  
Phosphate Rock ◽  
Phosphate Fertilizers ◽  
Phosphorus Fixation

Phosphate Fertilizers by Calcination Process - Action of Silica and Water Vapor on Phosphate Rock

1934 ◽  
Vol 26 (4) ◽  
pp. 406-412 ◽  
Author(s):  
D. S. Reynolds ◽  
K. D. Jacob ◽  
L. F. Rader
Keyword(s):  
Water Vapor ◽  
Phosphate Rock ◽  
Phosphate Fertilizers ◽  
Calcination Process

Phosphate Fertilizers by Calcination Process: Experiments with Phosphate Rock in Very Thin Layers1

1936 ◽  
Vol 28 (6) ◽  
pp. 678-682 ◽  
Author(s):  
D. S. Reynolds ◽  
H. L. Marshall ◽  
K. D. Jacob ◽  
L. F. Rader
Keyword(s):  
Phosphate Rock ◽  
Phosphate Fertilizers ◽  
Calcination Process

scholarly journals An Experiment and Study of M30 Grade of Concrete by Partially Replacing Fine Aggregate with Marble Dust Powder and Phosphogypsum in Rigid Pavement

2022 ◽  
Vol 10 (1) ◽  
pp. 578-584
Author(s):  
Pooja bhatia
Keyword(s):  
Phosphate Rock ◽  
Fine Aggregate ◽  
Equal Proportion ◽  
Construction Site ◽  
Phosphate Fertilizers ◽  
Rigid Pavement ◽  
Green Concrete ◽  
Gypsum Content ◽  
Marble Dust ◽  
Marble Rock

Abstract: The Project is to study about M30 grade of concrete by adding waste materials. Marble dust powder and phosphogypsum which is easily available marble which are standard among the most imperative materials, utilized as a part of the development business. Marble dust is a waste material from the construction site is mixed with concrete as a replacement material. Marble dust powder is acquired from sawing and moulding of marble rock. Phosphogypsum is produced as an outgrowth of the production of fertilizer from phosphate rock. There is a high gypsum content and gypsum is a widely used material in constructions. It is weakly radioactive in nature because it is a by-product of phosphate fertilizers. In the M30 grade of concrete fine aggregate is partially replaced by marble dust powder and phosphosgypsum in some proportions. The fine aggregate is replaced by 10%, 20% and 30% in which marble dust powder and phosphogypsum and are added in an equal proportion. Keywords: Marble dust powder, phosphogypsum, grade of concrete, rigid pavement, green concrete.

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