Process for production of calcined phosphate in a grate furnace

1988 ◽  
Vol 16 (2) ◽  
pp. 169-177 ◽  
Author(s):  
S�nia C. Cardeal Pereira ◽  
Efraim Cekinski ◽  
Jos� Vicente Valarelli
Keyword(s):  
Calcined Phosphate

Evaluation of Christmans Island C-grade phosphate as a fertilizer on some soils in southern NSW

1970 ◽  
Vol 10 (47) ◽  
pp. 783 ◽  
Author(s):  
J Lipsett ◽  
CH Williams
Keyword(s):  
Subterranean Clover ◽  
P Uptake ◽  
Absolute Amount ◽  
First Year ◽  
Soluble Phosphate ◽  
Christmas Island ◽  
Calcined Phosphate ◽  
Pasture Plants

Finely-ground calcinated C-grade phosphate from Christmas Island was compared with other forms of phosphate as a source of phosphorus for plants. In the glasshouse there was little P uptake from Christmas Island phosphate at first harvests of subterranean clover and ryegrass, but uptake by both species increased at later harvests, both in absolute amount and relative to that from soluble phosphate. The availability of the calcined phosphate varied from soil to soil. In the field, pasture plants made appreciable use of the phosphate only in second or subsequent years ; mixtures of calcined C-grade phosphate with ,superphosphate (1:1) were more effective in the first year on pasture than the C-grade phosphate alone, and produced similar responses to equivalent amounts of superphosphate. Wheat made little use of C-grade phosphate in the field.

scholarly journals Granulated Compound Fertilizers from Lime Nitrogen, Calcined Phosphate and Potassium Salts

1958 ◽  
Vol 61 (9) ◽  
pp. 1128-1131
Author(s):  
Shoichiro Nagai ◽  
Jun-ichi Fujiya ◽  
Susumu Kino ◽  
Hisaharu Tokutake ◽  
Toshitaka Shirosaki
Keyword(s):  
Potassium Salts ◽  
Calcined Phosphate

Low Solubility of Calcined Phosphate: Surface Area Reduction or Chemical Composition Change?

2013 ◽  
Vol 32 (1) ◽  
pp. 80-85
Author(s):  
T. F. Al-Fariss ◽  
F. A. Abd El-Aleem ◽  
Y. Arafat ◽  
K. A. El-Nagdy ◽  
A. A. El-Midany
Keyword(s):  
Chemical Composition ◽  
Surface Area ◽  
Composition Change ◽  
Area Reduction ◽  
Calcined Phosphate ◽  
Low Solubility ◽  
Surface Area Reduction

scholarly journals Granulated Compound Fertilizers from Lime Nitrogen, Acidic Calcined Phosphate and Potassium Salts

1958 ◽  
Vol 61 (9) ◽  
pp. 1131-1133
Author(s):  
Shoichiro Nagai ◽  
Susumu Kino ◽  
Jun-ichi Fujiya ◽  
Hisaharu Tokutake
Keyword(s):  
Potassium Salts ◽  
Calcined Phosphate

Experimental study on pyrolysis of camphor wood catalyzed by CaO-calcined phosphate mixture

Fuel ◽  
2021 ◽  
Vol 288 ◽  
pp. 119642
Author(s):  
Yuyu Lin ◽  
Chuang Zhang ◽  
Liangtao Zhu ◽  
Zhongwen Xu ◽  
Mingyan Gu ◽  
...  
Keyword(s):  
Experimental Study ◽  
Calcined Phosphate

Wheat yield responses to various phosphate fertilizers in South Australia

1972 ◽  
Vol 12 (54) ◽  
pp. 65 ◽  
Author(s):  
CL Rudd
Keyword(s):  
Calcium Phosphate ◽  
Rock Phosphate ◽  
Wheat Yield ◽  
South Australia ◽  
Calcium Pyrophosphate ◽  
Water Soluble ◽  
Phosphate Fertilizers ◽  
Rock Phosphates ◽  
Calcined Phosphate ◽  
Yield Responses

A number of phosphate fertilizers were tested as a source of phosphorus for wheat during three seasons (1967-1969) in the cereal growing areas of South Australia. The fertilizers were standard superphosphate, double superphosphate, calcium phosphate, two forms of calcined phosphate, a mixture of calcined phosphate with superphosphate, and untreated rock phosphate. Nine experiments were sown on a range of soils (pH 6.2 8.4) during the three years.At equivalent rates of total phosphorus, the water-soluble phosphates (superphosphate, double superphosphate) and the readily hydrolysed calcium pyrophosphate gave similar responses in all experiments. Water insoluble calcined and rock phosphates gave lower yields than superphosphate and, in most cases, the yields were not significantly greater than with no fertilizer.Uptake of phosphorus in the grain paralleled the grain yield differences between the fertilizers.

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