BLL Spiral Chute

What is BLL Spiral Chute?

BLL spiral chute a use of the inertial centrifugal force generated by the slurry in the spiral rotary movement to realize the separation of light and heavy minerals. It is more ideal for mining and mineral processing, especially for sand mining in seashore, riverside, sand beach and stream channel. The product has reasonable structure, simple installation, small footprint, easy operation, stable ore dressing, clear separation, large handling capacity, high efficiency, high enrichment ratio, high recovery rate, reliable operation. It has the advantages of light weight, moisture-proof, rust-proof, corrosion-resistant, strong adaptability to the fluctuation of the feeding volume and concentration, particle size and grade, and no noise. When the spiral chute is used in large quantities in the industry, it should be configured in groups, and the ore is quantitatively fed by multi-tube separator, and the spiral chute should be configured in rows continuously to save the floor space.

If you are a beginner and do not know about BLL Spiral Chute, tell us your raw material characteristics, finished product requirements, site conditions, production budget, hourly production, and other requirements, we have professional engineers to equip you with a suitable model at a reasonable price. Next, let’s see the types of BLL Spiral Chute we can supply.

What Is BLL Spiral Chute Used For?

Spiral chute is suitable for sorting iron ore, ilmenite, chromite, sulfide iron ore, zircon, rutile, monazite, phosphorus ethylene ore, tungsten ore, tin ore, tantalum ore, niobium ore, and other nonferrous metals, rare metals and nonmetallic mineral objects with specific gravity difference of the fines of the size of 0.3–0.02 mm.

Spiral chute has the advantages of stable and easy control of sorting process, wide range of variation of feeding concentration, high enrichment ratio, high recovery rate, small footprint, low water consumption, simple structure, no power required, large handling capacity, easy installation, convenient operation, and small investment with quick results.

For example, Previously a customer’s mineral processing plant ore in addition to a small number of larger particles, mainly distributed in -0.15mm particle size, the mine covers a small area, but the processing capacity is large. Chunlei spiral chute manufacturer according to the customer plant site and processing capacity, in order to increase the use of the spiral chute period, specially to the spiral chute internal wear-resistant rubber to increase the wear resistance of the machine, but also acid, corrosion resistance. Customers actually use the mechanical process of mineral stratification is obvious, the service life of the machine than ordinary chute extended by half a year.

Applicable materials:Mineral processing spiral chute is mainly used for separating iron, tin, tungsten, tantalum, niobium, gold, coal, monazite, rutile, zircon and other metal and non-metal minerals with sufficient specific gravity difference of 0.3-0.02 mm fine grains.

BLL Spiral Chute ordered by Customer

Chunlei Machinery has been engaged in mining machinery manufacturing for more than 30 years, with a wealth of experience in building websites and customer cases, served customers all over the world!

Technical Parameters of BLL Spiral Chute

Model			BLL-2000	BLL-1500	BLL-1200	BLL-900	BLL-600	BLL-400
Spiral Outer Diameter（mm)			2000	1500	1200	900	600	400
Pitch of spiral（mm)			1200	900, 675	900, 720, 540	675, 540, 405	450, 360, 270	240, 180
Pitch-to-diameter ratio (pitch/diameter)			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 inclination（° )			9°	9°	9°	9°	9°	9°
Number of mounted helical heads			3	4	4	4	2	2
Ore 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
Ore concentration(％)			30~55	30 ~55	25 ~55	25 ~55	25 ~55	25 ~55
Production capacity（t/h)			7~10	6~8	4~6	2~3	0.8~1.2	0.15~0.2
Overall dimensions	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

Working Principle of BLL Spiral Chute

In use the spiral chute stand up, calibrate the vertical line, with an iron frame or wood fixed in a suitable position, uniform slurry through the first end of the spiral chute installed in the feed chute slowly to the spiral chute surface, for sorting. The tail end of the spiral chute is equipped with a valve block-type product interceptor, which divides the sorted products into three kinds along the radial direction according to the grade. The position of the valve block is adjusted to change the intercepted width of each product, and the product gathering hopper will gather and export the intercepted multi-head ore flow separately. Concentrate flows into the concentrate hopper and is piped out, and the tailing sand flows into the tailing hopper and is piped into the sand pool, and is then discharged by sand pump, which completes the whole process of ore dressing.

Advantageous features of BLL Spiral Chute

• BLL spiral chute high efficiency, high recovery, accurate ore separation.
• Light weight, rustproof, wear-resistant and corrosion-resistant.
• Small space occupation, low water consumption, simple structure, no power required.
• Low operating cost and long service life.
• Strong adaptability to the fluctuation of ore feeding quantity, concentration, particle size and grade.
• Spiral chute is inexpensive, simple to install, easy to operate, small investment and quick return.
• The friction formed on the diamond surface makes the ore dressing effect better than other plastic surfaces.

BLL Spiral Chute Machine FAQ

1. Q: What materials can the BLL Spiral Chute separate?
A: It is ideal for separating fine-grained minerals such as ilmenite, chromite, iron ore, zircon, rutile, monazite, tungsten, tin, tantalum, niobium, and coal. It works best for materials with a particle size between 0.1mm and 3mm.

2. Q: How many spiral turns does the BLL model have, and why does it matter?
A: The BLL model typically has 5 to 7 turns. More turns provide a longer separation path and higher concentrate grade. Our BLL-5 (5 turns) is good for general use, while BLL-7 (7 turns) is better when you need a very high-purity final product.

3. Q: What is the capacity of a BLL Spiral Chute?
A: A single BLL spiral chute can process 1 to 4 tons per hour (depending on material density and particle size). For larger operations, we can combine multiple units (e.g., 4, 8, or 16 spirals) into a modular frame to increase total capacity.

4. Q: Is the BLL Spiral Chute easy to maintain?
A: Very easy. It has no moving parts – no motors, bearings, or shafts. All wear surfaces can be lined with polyurethane or rubber. You only need to flush with water after each shift to prevent material buildup. No special tools or daily lubrication required.

5. Q: Do you provide installation guidance for overseas buyers?
A: Yes. We provide a detailed installation manual and layout drawing. For larger orders, we can also send an engineer to your site to supervise installation and train your workers. Online video support is available 24/7.