subject: Factors Affecting The Spiral Concentrator [print this page] . .
(1) spiral groove diameter d: on behalf of the spiral concentrator specifications and determine the basic parameters of the other structural parameters. Commonly used spiral concentrator with a diameter of 600mm.
(2) the spiral cross-sectional shape of the lateral inclination: the spiral groove cross-sectional shape of said spiral groove through the axis along the face the cutting cross-section shape; the lateral inclination of the spiral flow membrane thickness affect the sorting belt.
(3) pitch h: it determines the vertical inclination of the spiral groove, affecting the flow velocity of the slurry in the tank and the thickness of the flow membrane. Practice shows that, for the spiral of industrial-type washing machine from the diameter than 0.4 to 0.6 is appropriate, the corresponding outer edge of the longitudinal inclination of 7 to 11 .British gec-elliot spiral concentrator from the diameter ratio increased to 0.73.
(4) the length and number of turns of the spiral groove: depends on the ore layering and zoning required to run the distance. Practice shows that the water flow, run by the inner edge to outer edge along the trough passing through the distance of about one and a half, but for the mineral particles is much larger than this number. The effective length of the spiral groove is determined by the number of turns and diameter. The same length, increasing the number of turns than the increase in diameter can receive better sorting effect. General handling easily selected placer spiral groove 4 turn is enough to deal with refractory ore may be increased to 5 to 6 laps.
(5) to the volume of mineral concentration and to mine: they also decided that the amount of solid handling. The practice shows that the concentration is too large, the viscosity of the slurry, seam loose bad, particle sedimentation resistance, impact of stratification and mineral particles along the slot movement speed. Concentration is too small, not only reduce the processing power, and the mineral material layers thinner, do not have the conditions of density stratification. Appropriate to mine the concentration of performance points with clarity. Spiral concentrator may have a wide range of mineral concentration in the solid quality accounted for 10% to 30% when the elections of other indicators have little effect. When the concentration of the appropriate value to ore volume changes in a wide range of other indicators of the election is no big.
(6) rinse to wash mixed with light mineral concentrate with water: In order to improve the concentrate along the trough moving speed and improve the concentrate grade, which require washing in the groove of the inner edge of injection. By adding water, as the concentrate quality requirements and heavy mineral particles along the slot movement.
(7) to mine the nature of: ore particle size, the ore in the light and heavy mineral density difference, shape difference and so do not have a significant impact on the elections, these factors can not be adjusted, but the concern for the selection of spiral concentrator.
