www.voestalpine.com/stahl voestalpine Stahl GmbH / BTV Bramme

Optimization of the coal-preparation plant

in Linz

Thomas Abfalterer

| | voestalpine Stahl GmbH / BTV Bramme 2

Content

• Historic plant configuration

• Requests on a modern coal-preparation plant

• New plant configuration

• Plans for the future

| | voestalpine Stahl GmbH / BTV Bramme 3

318

333 334

345

wagon tipper 1 wagon tipper 2

331

to coal preparation plant

harbour basin

coke storage coal storage

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from coal storage

16 coal bunkers

1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8

2.8 2.7 2.6 2.5 2.4 2.3 2.2 2.1

batteries

coal

tower

3 2 1

coal mixer

separation of impurities (magnetic separator)

3 coal crushers

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Requirements on a modern coal-preparation plant

• Cost effective unloading and storage of coals

• Accurate blending and homogenization

• Constant blend quality:

• Grinding

• Moisture

• Separation of impurities

| | voestalpine Stahl GmbH / BTV Bramme

16 coal bunkers

X 2 coal crushers

coal scale

coke -

storage coal yard

wagon tipper 1

3 crane bridges

X

Separation of impurities waste

box

magnet separator

Mobile crane

| | voestalpine Stahl GmbH / BTV Bramme 7

| | voestalpine Stahl GmbH / BTV Bramme 8

| | voestalpine Stahl GmbH / BTV Bramme 9

| | voestalpine Stahl GmbH / BTV Bramme 10

| | voestalpine Stahl GmbH / BTV Bramme

16 coal bunkers

X 2 coal crushers

coal scale

coke -

storage coal yard

wagon tipper 1

3 crane bridges

X

roller screen crusher impact

mill

star screen

X

waste

box

magnet separator

X

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16 coal bunkers

star screen

coal scale

coal mixer water

online moisture measuring

automatic coal sampler and

bulk density measurement

coal tower

| | voestalpine Stahl GmbH / BTV Bramme 13

Plans for the future

• Renewal of the coal mixer

• Automatic sampler for single coals

• Online analysis:

• Coal grain size distribution measurement

• Coal type analysis

| | voestalpine Stahl GmbH / BTV Bramme 14