remo4gao Stickiest caracteriza4gao e Reciclagem Degussa Brasil Ltda Parmenides C Martinez 29 Abril 2004 Curso Internacional de

Transcrição

1 Stickiest caracteriza4gao e remo4gao Parmenides C Martinez Degussa Brasil Ltda 29 Abril 2004 Curso Internacional de Reciclagem ABTCP Sao Paulo SP Brasil

2 Stickies O termo Stickie e geralmente usado na industria de papel para descrever um contaminante de carater mais ou menos adesivo pegajoso causador de depositos em diferentes pontos do circuito de uma maquina de papel ou defeitos na propria folha

3 degussa Worer Oremimis Wet Fd Deposition Control Noiealmonl Is Ul yo agglomerziim Caus nswweposition

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5 Classifica4gao de Stickies Doshi and Dyer 2000 Tamanho Tipo Comportamento Natureza Amigaveis ou nao a reciclagem Outros visibilidade descrii ao quimica

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7 Classificagao de Stickies Tipo Stickies Primarios presentes desde o inicio do processo hot melts PSA resinas etc Stickies Secundarios formados durante o processo por alteracoes fisico quimicas ph temperatura demanda ionica etc

8 degussa Water Chemicals n pulp Recovered papery chemicalla ial pitch Colloidal stickies Colloidal su Colloidal destabilization Colloidal destabilization Tacky stickies Interactive surfaces Sticky deposition

9 Classificagao de Stickies Comportamento Grau de comportamento viscoelastico Importante em projetos de remocao por cleaners

10 Classifica4gao de Stickies Natureza Aderido nas fibras livres no meio

11 Classificagao de Stickies Amigaveis ou nao a recidagem Classificacao nova devido a pesquisas realizadas nos EUA pelo USPS U S Postal Service visando o desenvolvimento de adesivos para selos que sejam facilmente removiveis em fabricas de papel reciclado

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13 degussa Water Chemicals DEPOSITS SYNTHETIC ADHESIVES t Solvent Hot Oispereicn atlaesrves melt edhvas adhazlves y y y Styrene bmetliene rutler 5611 Ethylen vinyl ecreue EVA Polyvinyl adawle PVAol Polyvinyl tioryleta Ayethylene Polylsoprene Polyisobueene Polybutadiens Polyamide Polyurethane Polyvinyl almhol Polyvinyl propionate Polyvinyl ether Polyester Acrylic acid aster Block copolymeles Wax NeWrel or mcdiaed wood resins NMprait PRINTING INK COATINO WDO BINDERS DERMA C y y y Evaporating Oxidizing y Mlllerel oil Was HIC resins Arta resins Rosin issuers Unsetumw fatty acids Retenti on Br tbtbv PtCh Curing g Curing toner WIR y Epoxy acrylale Polyol BdMdu Unsettles acrylm Polyester acryleb Hydroxyl polyester y y 4f 56R 5611 Fatty adds Polyvinyl agrya9le WAG Rosin doles PClyeder Polyvinyl acrylics Fatty esters Polyvinyl buryrel Styrene smiles

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18 FM degussa Water Chemicals A ABS mz T17FrI 11 c I A F 1 41 vn mfn arf mapv n ve 1 rao li imue Ct ies Semple mm Manpa I I lglenim 1 Vanemela Wakenabla gemngen

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22 degussu Water Chemfcals Alteration Avoldanes Removal Research on and Raw material Screening development selection Cleaning of recyclingfriendly Paper additive Flotation converting material selection Washing lecommendation for Othertachniques converting material Dispersion Passivation I Prevention Mechanical Minerals Protection of wires thermal Synthetic fibers tells and rolls chamical Zirpanium salts Cleaning of paper dispersion Surfactants machine clothing anionic dispersants Cationic polymers organicsolvanls Fixing agents

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24 de Poaching Water Chemicals mfcals wlulwh oracle gw1ennnt SPECIFY IS ISNM add lm1i gsem WHAT Mlryo you WMgT mubyeu Cpnwsg trwmewllm1i having wuaowiwlha la wone wxh It or hewn nuki be wrow WHENE Is the long when he troukb is WHEM xwu ft mm mak wd 1 saw M1eWelo Bled on llic ftsma wua n he lucelea WHEN was hm tradlfin enl ndlwo WHEN Wutl ft have been The modest Jaye 6mep has he homes Wan maimed show hen M he M1icloryv114 cyoydvu hung b Ilw hammy last noticed ceun it she been naaceb Sinn tmnl Maki it fiat be noticed EMENY How many unib of he long EUEN How manycoun MavetheaouNC he IM rouble How much of any one unit has he whole How many fawn ar selects ueoneryorou a How mun could nave one lmude How many could hem 0o

25 Stickies Remocao mecanica Screening Depuracdo fina e grossa Cleaners hidrociclones Flotadores Lavadores p ex sidehill

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28 degussa Water Chemicals Before rebuild Stickyload 100 After rebuild Sticky load 100 Flotation 56 rl 56 Flotation r Reject Flotation Rebuilt reject flotation r TSR TSR Total Removal

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30 AL degussa Water Chemicals 11Ckb f bgfltlwjg11 UI6 nwi FlM D4pere10 h eh O o Myer YdokWo SCI ellumes wuh dspoelli nmw tlep Mvn

31 degussa Water Chemicals

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33 AM Remogdo Quimica Talco Bentonita Stickies adigao de minerais Dosagem usual entre 2 ate 20 kgton A particula pode se desestabilizar devidoa alto cisalhamento bombas refinagao Fogarty 1993

34 degussu Water Chemicals Untreated taming wire Stickle Wire I I Wire Tremad terming wire Stil1chie 1 Coating stickle may

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36 Conclusoes O sucesso de um programa de stickies depende da combinaqdo entre um otimo controle das aparas um otimo controle de processo um otimo sistema de preparaqao de massa e um otimo programa quimico de controle e remoqdo

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