METHOD OF PULP BLEACHING WITH ACCOMPANYING ADSORPTION OF METALS Russian patent published in 1999 - IPC

Abstract RU 2129628 C1

FIELD: pulp bleaching. SUBSTANCE: method includes, after defibration, separation from pulp of the first filtrate containing metals, mainly, in ionic form; introduction of these metals into definite quantity of fibrous mass adsorbing the metals. The fibrous mass is subjected to treatment which is not considerably and negatively affected by metals present in the mass. EFFECT: higher efficiency. 10 cl, 3 dwg

Similar patents RU2129628C1

Title Year Author Number
METHOD OF SEPARATING OUT OF SULFUR COMPOUNDS (VERSIONS) 1994
  • Stigsson Lars
RU2126863C1
METHOD OF CHORINELESS BLEACHING SYNTHETIC CELLULOSE 1993
  • Tibbling Petter
  • Ehkstrehm Ulla
  • Nil'Sson Ehrik
  • Larsson Lars-Ove
RU2120511C1
DEFIBRATED TOBACCO RAW MATERIAL 2017
  • Bjoerkholm, Lars
RU2709941C1
METHOD OF PRODUCING CELLULOSE 1991
  • Ehtan K.Ehndrjus[Us]
  • Fernando Eh.Mera[Us]
  • Lorens K.Svift[Us]
RU2068904C1
METHOD OF GAS DELIGNIFICATION OF WOOD PULP 1994
  • Sudkhir K.Mendiratta[Us]
  • Dehvid V.Koulfild[Us]
RU2097461C1
METHOD OF MULTISTEP CELLULOSE WHITENING 1990
  • Per G.Lundgren[Se]
  • Lillemor K.Khol'Tinger[Se]
  • Juri J.Basta[Se]
  • Mari R.Samuel'Sson
RU2026437C1
METHOD OF PREPARING PULP FROM CELLULOSE-CONTAINING MATERIAL 1996
  • Sven Zigle
RU2139965C1
CONTINUOUS PROCESS FOR PRODUCTION OF CHEMICAL CELLULOSE PULP AND CONTINUOUS COOKING KETTLE 1994
  • Bruno S. Markochchija
  • Dzh. Robert Prauf
  • Richard O. Laakso
  • Dzhozef R. Fillips
  • Rol'F K. Rikham
  • Dzhehn T. Richardsen
  • R. Fred Chehss
RU2165433C2
METHOD OF OBTAINING CELLULOSE FROM LIGNOCELLULOSE-CONTAINING BIOMASS 2010
  • Patt Rudoff
  • Kreipl Andreas
RU2534067C2
METHOD OF OBTAINING CELLULOSE 0
  • Duglas Vilyam Riv
SU1109057A3

RU 2 129 628 C1

Authors

Bergkvist Anders

Daglef Khokan

Dates

1999-04-27Published

1993-06-24Filed