Spiral Chute

Spiral Chute is an efficient gravity separation equipment, categorized as gravity separation equipment. Based on mineral density difference, it adopts spiral inclined surface flow film separation design, optimizes spiral trough structure and slope, no moving parts, suitable for fine-grain mineral separation, widely used in separation and purification of metal ore, non-metallic ore and coal.

Feed Size:0.02-2.0 mm

Diameter:400-2000 mm

Capacity:0.15-10 t/h

Details
Advantage
Parameters
Application

Product Details

The main body consists of spiral trough, support, ore feeding device and ore receiving hopper. The spiral trough is integrally formed with FRP or wear-resistant plastic, with smooth and wear-resistant surface; the trough slope is adjustable, and the ore feeding device is a buffer feeder. Single spiral diameter 200-1500mm, processing capacity 0.3-50t/h, can be used in single group or multiple groups in parallel.

Slurry is evenly fed to the top of the spiral trough through the ore feeding device, and flows spirally downward along the trough surface to form a flow film; under the action of gravity, centrifugal force and friction, high-density minerals settle to the inner side of the trough bottom, move slowly downward with the bottom flow, and discharge from the inner ore receiving hopper; low-density minerals suspend in the upper layer of the flow film and discharge from the outer ore receiving hopper to realize separation.

Product Advantage

High separation efficiency: Flow film separation design, high-density mineral recovery rate ≥90%;
Simple structure: No moving parts, few failures, low maintenance cost;
Energy-saving and economical: No power drive, only gravity flow, extremely low energy consumption;
Wear-resistant and durable: FRP trough is corrosion-resistant and wear-resistant, service life 2-3 years;
Strong adaptability: Can process 0.02-2mm fine-grain minerals, suitable for multiple scenarios.

Product 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)		9°	9°	9°	9°	9°	9°
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

Product Application

Metal ore separation: Fine-grain roughing of gold ore and tin ore, efficiently enriching useful minerals;
Non-metallic ore purification: Impurity removal of quartz sand and zircon sand, removing iron, titanium and other heavy minerals;
Coal processing: Desulfurization of thermal coal, separating coal and high-density sulfides; 4. Tailings treatment: Recovering fine-grained useful minerals from mineral processing tailings, realizing resource reuse.