Engeering Horizon

APPLICATION NOTES

APPLICATION NOTES

May 02
14:38 2015

APPLICATION PHOSPHORIC ACID MATERIALS

FOR RAW PHOSPHORIC ACID

Phosphates are important parts of agricultural fertilisers. They are obtained from phosphoric acid as an intermediate product. In order to obtain phosphoric acid phosphate containing minerals are often digested with sulfuric acid. This process produces extremely corrosive mixtures containing varied chlorides and fluorides as well as phosphoric and sulfuric acids. In addition, a large number of solids are obtained in form of gypsum and sand. Due to the chlorides and fluorides very high grade steels have to be used for metallic materials. A material for this process must resist high corrosion loads and exposure to wear.  As there exists no all-purpose material, detailed knowledge of the composition of media as well as material expertise are important to design pumps with long operational life in process.

 

1.4136S

Excellent wear resistance

1.4517 (CD4MCuN)

High wear resistance and good corrosion

resistance

R3020

Very high corrosion resistance

1.4529S

Very high corrosion resistance and wear

resistance

1.4652S

Excellent corrosion resistance and very

good wear resistance

Alloy C1 (2.4686)

Excellent corrosion resistance and wear

resistance

 

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Engineering Horizons

Engineering Horizons

“Engineering Horizons” is the first & leading technical magazine of Pakistan covering Process, Mechanical, Metallurgical, Mining, Electrical & Electronics field under a single cover. We also feel pleasure in saying that this is the only magazine of its own kind & style, which is widely circulated in all Engineering Sectors of Pakistan.

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