Application and ProcessMore than 80% of Phosphate Rock is used for the production of fertilizers.It is also processed to recover the element phosphorus (P). This element is a nutrient, vital to human, animal and plant life.

Naturally occuring Phosphate Rock is mainly mined in Florida, China, the North of Africa and Russia. In the fertilizer process, ground Phoshate is treated with sulphuric acid, forming “Phosphoric acid” and “Single Super Phosphate”.

Phosphate and phosporic acid are forming “Triple Super Phosphate”. “Mono Ammonia Phosphate” and “Di Ammonia Phosphate” are the end products after the chemical reaction of Phosphate with Ammonia.

NEA BenefitsExperience ■ since 1954 in Phosphate Rock grinding ■ today 22 Phosphate grinding systems are in succesful operation

Fineness ■ sharp top cuts by SDR Radial Classifier

Direct Drive ■ patented Direct Drive system of the mill with multipole synchrone motor ■ simplified mill design, eliminating e.g. gearbox, couplings and oil lubrication ■ variable grinding speed for optimized process conditions

Maintenance ■ drive and mill rotor with pendulums, are completely removable in one step for efficient external maintenance ■ highest process utilization due to lowest downtime

Wear Protection ■ heavy duty casting of mill body ■ wear resistant grinding tools ■ wear protection in the grinding zone

Dust control ■ 100% product recovery in full size baghouse, assuring max. 5 mg/m3 dust emission, continously monitored by a measuring and alarm system. ■ dustfree air recycling to the mill ■ clean working area by incorporated vacuum cleaning system

Operation costs ■ saving energy by using torque motor and eliminating losses from gearbox, couplings or belt drive ■ reduce spare parts costs by 50%

Phosphate Rock Grinding Systems

englisch

1670 2000 2300 2650

940 1200 1380 1570 1800 2340 2800 3500

22.3 28.5 32.8 37.3 38.8 42.8 50.5 55.6 60.5 66.6 75.6 83.2 18.9 24.2 27.8 31.7 33.0 36.3 42.8 47.2 51.3 56.5 64.1 70.6

200 250 250 315 315 315 355 400 450 500 500 560

englisch

Wer

best

udio

Ran

g 11

-200

9

Mill motor

Air flow rate

Discharge rate

90%<150µm 96%<150µm

Grinding ring DIA

Mill type

kW

m³/min

t/ht/h

mm

PM 16 U4 20 U4 30 U3 30 U4 30 U3 30 U4 60 U3 60 U4 60 U3 60 U4

Discharge rates are valid for Egyptian phosphate rock with hardness of 90° Hardgrove and feed moisture < 3% H2O.

Feed Material

Fuel

Product

OPTION

Dry sieve analysis:DIN 66 165150 µm = 100 mesh (ASTM)

PO

SPH

ATE

P

OSP

HAT

E

PO

SPH

ATE

englisch

NEUMAN & ESSER Process Technology GmbHWerkstrasse, 52531 Übach-Palenberg, Germany

Phone: +49 2451 481- 02 · neagmbh@neuman-esser.de · neuman-esser.com

16 U4 20 U4 30 U3 30 U4 30 U3 30 U4 60 U3 60 U4 60 U3 60 U4