Spiral Chute

Introduction
A gravity separation equipment of separation different weight mineral by inertial centrifugal force pulp produced in helix turning motion
Capacity
0.15~16t/h
Product Improvement
There are 3 kinds of chute for user to choose, glass steel chute, Xinhai wear-resistant rubber liner, polyurethane rubber liner.

Advantages

  • Stable, easy control, wide range of concentration
  • Large capacity, enrichment ratio, high recovery rate
  • Small cover space, less water consumption, simple structure, no need of power
  • Simple installation, convenient operation,less investment, quick return

Work Principle

Ore pulps are uniformly fed into machine and form different layers as they pass across chute. Heavy minerals precipitate to bottom and are moved toward inner edge by the comprehensive action of various forces; light minerals are moved toward outer inner due to the speedy rotation. As a result, mineral particles with different density are divided into three zones——concentrate, middling and tailing.

Spiral chute is suitable for treatment of 0.6-0.03mm lode and placer, but high mud content is bad for separation. At present, spiral chute has been widely used in the treatment of iron ore, tungsten, tin ore, niobium tantalum ore, coastal and riverside placer and gold ore.

Technical Parameters

Model BLL-2000 BLL-1500 BLL-1200 BLL-900 BLL-600 BLL-400
Outside Diameter (mm) 2000 1500 1200 900 600 400
Screw Pitch (mm) 1200 900, 675 900, 720, 540 675, 540, 405 450, 360, 270 240, 180
Pitch Diameter Ratio 0.6 0.48, 0.36 0.75, 0.6, 0.45 0.75, 0.6, 0.45 0.75, 0.6, 0.45 0.6, 0.45
Lateral Dip Angle (degree)
Max. Screw Numbers Per Set 3 4 4 4 2 2
Feed Size (mm) 2.00~0.04 0.8 ~0.037 0.3~0.03 0.3 ~0.03 0.2~0.02 0.2 ~0.02
Feed Density (%) 30 ~55 30 ~55 25 ~55 25 ~55 25 ~55 25 ~55
Capacity (t/h) 7~10 6~8 4~6 2~3 0.8~1.2 0.15~0.2
Overall
Dimension
Length (mm) 2120 1600 1360 1060 700 460
Width (mm) 2120 1600 1360 1060 700 460
Height (mm) 5600 5300 5230 4000 2600 1500
Weight (kg) 900 850/800 700/650/600 450/400/350 120/100/80 50