Spiral separators of variable bearing portion angles

Details Spiral separators of variable bearing portion angles Spiral separators of variable bearing portion angles

B - Operations, Transporting

03

B

209/155

B03B 5/52 (2006.01) B03B 5/62 (2006.01)

Patent

CA 1200789

ABSTRACT The invention relates to a spiral separator supported with its axis substantially vertically which is adapted to receive at an upper end thereof a pulp of water and minerals to be separated. The spiral separator includes a plurality of helical turns wherein each turn has in vertical cross section a profile which includes a floor and an outer wall. The outer wall is inclined upwardly relative to the floor. The invention is characterized in that the floor alters in profile as the spiral descends and includes a radially inner part which extends to a substantially uniform radial distance from the axis and a radially outer part inclined upwardly at a steeper angle to horizontal than the inner part throughout part of the length of the spiral separator. This feature provides a generally non-turbulent or laminar flow of pulp along the said part of the said spiral separator and thereby inhibits sand barring.

405508

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