Torredonjimeno CM3 OC to CC

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    Coll. 9

    Performance improvement in grinding systems

    Holcim Spain / Torredonjimeno plant / cement mill 3

    From open to closed circuit

    Luis Llamas Lidn

    Francisco Mateos Gmez

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    Holcim Espaa S. A. 37th Technical Meeting 2002

    Project phases

    Initial situation analysis

    Implantation

    Budget

    Results

    Procedures Sustainability

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    Initial situation analysis

    Throughput before modification

    To meet the CEM I 52.5 R specifications in the opencircuit mill is necessary to produce a special clinker type

    CEM II/B-M 32.5

    CEM II/A-L 42.5 R

    t/h kWh/t % clinker %R45um

    38 31.6 77 18.5

    24 50.0 88 9.0

    CEM I 52.5 R 18 62.0 96 --

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    Implantation

    Flow sheet open circuit (before modification)

    Flow sheet closed circuit

    Separator (Sturtevant SD-70)

    Photos

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    a silos

    Flow sheet open circuit

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    Flow sheet closed circuit

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    Separator

    Sturtevant SD 70

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    Holcim Espaa S. A. 37th Technical Meeting 2002

    Implantation

    Photo 1

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    Holcim Espaa S. A. 37th Technical Meeting 2002

    Implantation

    Photo 2

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    Holcim Espaa S. A. 37th Technical Meeting 2002

    Budget

    Approuved budget:

    Feasibility study 30000 Circuit modification 609907 Total budget 639907

    Investment total cost 644044

    Deviation + 0,64 %

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    Results

    Results slightly above guaranties

    The possibility to produce the CEM I 52.5R withstandard clinker (no more special clinker required)

    CEM II/B-M 32.5

    CEM II/A-L 42.5 R

    t/h kWh/t % clinker %R45um

    53 24.5 74 18.8

    45 27.1 83 9.0

    CEM I 52.5 R 31 36.0 96

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    RENDIMIENTO MZ3 A-L/42,5 R

    0

    5

    10

    15

    20

    25

    30

    35

    40

    45

    50

    15.10.2000

    06.11.2000

    30.11.2000

    18.12.2000

    18.02.2001

    15.03.2001

    22.03.2001

    29.03.2001

    05.04.2001

    13.04.2001

    20.04.2001

    28.04.2001

    06.05.2001

    14.05.2001

    22.05.2001

    29.05.2001

    08.06.2001

    16.06.2001

    24.06.2001

    29.06.2001

    06.07.2001

    13.07.2001

    20.07.2001

    28.07.2001

    04.11.2001

    12.11.2001

    21.11.2001

    30.11.2001

    07.12.2001

    14.12.2001

    22.12.2001

    29.12.2001

    08.01.2002

    15.01.2002

    22.01.2002

    29.01.2002

    05.02.2002

    12.02.2002

    21.02.2002

    28.02.2002

    07.03.2002

    t/h

    0

    10

    20

    30

    40

    50

    60

    70

    80

    90

    Kwh/t

    t/hKwh/t

    Adicinescorias

    Cambio a

    Circuito

    cerrado

    Performance evolution CEM II / A L 42.5

    t/h

    Change to closed circuit

    kWh/t

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    Holcim Espaa S. A. 37th Technical Meeting 2002

    0

    102030405060708090

    100

    1,0 10,0 100,0 1000,0TAMAO DE PARTICULA [m]

    SEPARACION

    /EFICIENCIA

    [%]

    Separator Tromp curve (CEM II / A - L 42.5)

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    Mill longitudinal sieving

    0,00

    10,00

    20,00

    30,00

    40,00

    50,00

    60,00

    70,00

    Longitud del molino [m]

    Re

    tenido[%]

    0

    500

    1000

    1500

    2000

    2500

    Finur

    a[cm2/g]Blaine

    19,054,762,381,190,590,300,20,090,0630,045Blaine

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    Ball charge compositionComposicin de Carga de Bolas

    Planta : Torredonjimeno

    Molino : MZ 3 Fch: Febrero 01

    1.Compartimiento

    Bola [ mm ] Peso [ t ] Porcentaje [%]

    90 8,1 26,0

    80 12,4 40,0

    70 8,1 26,0

    60 2,5 8,0

    Total 31,0 100

    Peso medio de bola [ g ] 1802

    Superficie esp. de bolas [m2 / t] 10,0

    2.Compartimiento

    Bola [ mm ] Peso [ t ] Porcentaje [%]

    50 3,5 6,0

    40 2,3 4,0

    30 8,7 15,0

    25 18,6 32,0

    20 12,2 21,0

    17 12,8 22,0

    Total 58,0 100

    Peso medio de bola [ g ] 42

    Superficie esp. de bolas [m2 / t] 33,4

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    Followed procedures

    Project

    Project definition Process study Separator offers technical evaluation Implementation Start up & fine tuning

    Clkosing and transfert

    Tools used:

    PMA Micrisoft project

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    Microsoft Project

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    Holcim Espaa S. A. 37th Technical Meeting 2002

    Follow up

    FBRICA: TORRE INFORME N: 7

    AO: 2000 FECHA: 28/02/01

    PERIODO: feb-01

    FECHAPROGRAMADA

    FECHAPREVISTA

    OBSERVACIONES

    01.02.00 29.02.0001.03.00 24.04.00

    Recepcin, comparacin ofertas 25.94.00 31.05.00

    01.06.00 15.06.00

    Decisin de ejecutar proyecto 18.06.00 25.07.00

    07.08.00 31.08.00

    14.08.00 27.09.00

    28.09.00 30.09.00

    02.10.00 09.02.01

    Transformacin M. Cemento III

    6

    10JEFE DE

    PROYECTO:FMG

    A la espera de ejecutar la parada del Molino.

    Terminacin del montaje previo con el molino en funcionamiento.

    PLAZO DEEJECUCIN:

    (meses)

    INQUIETUDES Y ACCIONES REQUERIDAS:

    DESVIACINTEMPORAL:

    (das)

    Conexin y puesta en marcha

    PROGRAMA PARA LAS CUATRO PR XIMAS SEMANAS:

    DESCRIPCI N BREVE DE LOS PUNTOS QUE SE CONSIDERAN IMPORTANTES

    LOGROS CLAVE DE ESTE PERIODO:Realizacin de suministro .

    Realizado

    Realizado

    Aprobada

    Recepcin, comparacin ofertas

    Realizacin de los pedidos

    Ejecucin trabajos con MZ-III, en marcha

    Ejecucin trabajos con MZ-III, parado

    Informe Datos actuales

    Documento de peticin ofertas

    Presentacin estudio

    Propuesta de inversin

    INDICADORES DE DESARROLLO DEL PROYECTO

    HITOS (TTULO)

    101.148.000,00 106.471.000,00 107.000.000,00 348.812,00

    INDICADORES ECON MICOS (pesetas)

    DIRECCI N DEDESARROLLOINDUSTRIAL

    PRESUPUESTADO PRESUPUESTO APROBADO PRESUPUESTO PREVISTO DESVIACIN ECONMICA

    INFORME DE AVANCEDEL PROYECTO

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    Holcim Espaa S. A. 37th Technical Meeting 2002

    Participants

    Plant staff:

    Plant Manager Production manager Maintenance manager. Quality manager Security chef

    Environment chef

    HGSR / CTS

    K. Breistschmid. S. Ortega.

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    Sustainability (1/2)

    Mill longitudinal sieving

    Mill balls filling degree

    Mill material level

    Mill ventilation measurement

    Separator Tromp curve

    Circuit material granulometry

    Yearly stop

    Separator ventilation

    Material grindability

    12 months

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    Holcim Espaa S. A. 37th Technical Meeting 2002

    Sustainability (2/2)

    Separator system inspection

    Filter system inspection

    Ball wear compensation

    Ball charge classification

    Weight feeders calibration

    Mill internals inspection

    Instrument verification

    Control loops verification

    Delegation of selected plant staff to the yearly Mill Seminarorganised in cooperation with HGRS

    12 months