Gravity Spiral Concentrator | Efficient Spiral Chute Supplier

Spiral Chute

Material of Construction

High-strength fiberglass reinforced plastic (FRP) body with heavy-duty polyurethane lining for superior corrosion and abrasion resistance.

Feed Method

Centralized pulp distributor ensuring uniform slurry stream split across multi-start spiral columns.

Discharge & Cut Adjustment: Adjustable mechanical splitters at the trough discharge to precisely isolate concentrate, middlings, and tailings streams.

Power Requirement: Zero power consumption; operates purely on natural gravity, centrifugal forces, and fluid dynamics.

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Spiral Chute – Product Overview

Gravity Spiral Concentrator: Efficient Mineral Processing Solution
The Spiral Concentrator (also known as a Spiral Chute) is a high-efficiency gravity separation equipment designed for processing fine minerals. Operating 100% on gravity and fluid dynamics, it delivers superior performance with zero electrical power consumption.

What is the working principle of the Spiral Chute?

Zero Energy Consumption & Low Operational Cost (OPEX)Eco-friendly gravity separation operating 100% without electrical power.
The gravity spiral concentrator processes heavy minerals entirely through natural forces, eliminating the need for electric motors or complex drives. Operating with zero moving parts, it removes mechanical failure risks, slashes maintenance routines, and drastically reduces processing costs per ton for continuous mining plants.
Superior Separation Precision & High Mineral RecoveryEngineered helical profiles tailored for precise mineral stratification.
Utilizing a combination of centrifugal force, gravity, and hydrodynamic drag, the spiral chute efficiently separates heavy minerals from light gangue across the $0.03\text{ mm}$ to $2.0\text{ mm}$ size range. Adjustable discharge splitters allow operators to fine-tune the cut between concentrate, middlings, and tailings for optimal grade and recovery.
Exceptional Wear Resistance & Extended Equipment LifespanHeavy-duty construction using premium anti-abrasive materials.
Built with a reinforced fiberglass structure and lined with high-durability polyurethane, this spiral separator withstands severe slurry abrasion from feeds with $25\%$ to $40\%$ solids content. Its robust design minimizes component replacement frequency, ensuring seamless long-term operation in harsh mining environments.
Compact Footprint, Modular Scalability & Rapid ROIHigh processing throughput per square meter of plant floor space.
Designed to deliver maximum volume capacity within a minimal installation area, the equipment easily integrates into scalable spiral banks for mining projects of any scale. The combination of low capital expenditure, zero power consumption, and high mineral recovery yields an exceptionally fast return on investment.

Working principle diagram of gravity spiral concentrator showing centrifugal force and particle stratification.

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Phần này được thiết kế để giải quyết các yêu cầu cấp bách nhất mà khách hàng có thể có liên quan đến hoạt động hàng ngày, bảo trì, lợi thế sản phẩm và dịch vụ sau bán hàng của máy nghiền hình nón của chúng tôi. Mục đích của chúng tôi là giúp bạn hiểu toàn diện về khả năng tổng thể của chúng tôi và cho phép bạn đưa ra quyết định sáng suốt cho các dự án của mình.

A gravity spiral concentrator is a versatile mineral processing equipment widely used for the beneficiation and enrichment of heavy minerals from light gangue. Primary Ores: Highly effective for processing iron ore, gold, ilmenite, zircon, chromite, rutile, monazite, tin (cassiterite), tungsten, and tantalite. Non-Metallic Minerals: Excellent for silica sand cleaning, glass sand purification, and coal washing. Separation Criterion: It successfully separates any mineral mixture where a sufficient specific gravity differential exists between the valuable heavy minerals and the waste tailings.

Achieving maximum mineral recovery rates requires maintaining proper feed particle size distribution and slurry concentration.Particle Size Range: The ideal feed size spans from $0.03\text{ mm}$ to $2.0\text{ mm}$ ($75$ to $400$ mesh). It excels in liberating fine-grained heavy minerals.Pulp Density (Solids Concentration): The optimal slurry feed density ranges between $25\%$ and $40\%$ solids by weight.Process Stability: Consistent slurry volumetric feed volume and controlled pulp density prevent turbulence, ensuring smooth hydrodynamic separation along the helical trough.

The spiral separator is an eco-friendly gravity separation device that operates 100% without electrical motors or moving mechanical parts. Driving Forces: The separation relies entirely on natural physical forces: gravity, centrifugal force, hydrodynamic drag, and secondary lateral fluid flow. Flow Mechanics: As slurry descends the helical incline, heavier particles experience less centrifugal force and migrate toward the inner margin, while lighter gangue particles are pushed outward. Cost Reduction: Operating with zero energy consumption dramatically lowers operational expenditure (OPEX) and power infrastructure requirements for remote mining sites.

Our spiral chutes are specifically engineered to withstand extreme abrasive conditions common in continuous mineral dressing plants. Structural Material: Built with high-strength fiberglass reinforced plastic (FRP) for structural rigidity, lightweight handling, and corrosion resistance. Anti-Abrasive Lining: The working surface is coated with high-durability polyurethane or corundum-infused wear coatings to resist heavy slurry erosion. Extended Service Life: Excellent wear resistance extends the equipment operational lifespan, minimizes unscheduled maintenance downtime, and reduces overall replacement costs.

No chemical reagents, collectors, or frothers are required during the gravity separation process. 100% Physical Separation: The equipment utilizes only water and natural mechanical forces to stratify and collect heavy minerals. Eco-Friendly Processing: Produces clean, non-toxic tailings, making it ideal for environmentally sensitive mining jurisdictions and strict discharge regulations. Water Recirculation: Process water can easily be clarified, recycled, and reused within closed-loop mineral beneficiation circuits.

Fine-tuning the product streams is straightforward and can be handled quickly by plant operators during live continuous operation. Adjustable Splitters: Discharge splitters located at the bottom of the spiral trough allow precise position adjustments to cut concentrate, middlings, and tailings streams. Operational Variables: Performance can be optimized by adjusting feed slurry density, water flow rate, and pulp feed volume. Profile Selection: Troughs can be selected with different pitch ratios and cross slopes tailored specifically to fine, medium, or coarse mineral feeds.

Scalability is achieved through compact modular design and multi-start assembly configurations. Multi-Start Spirals: Available in single, twin, triple, or quadruple starts per column to multiply throughput without increasing equipment footprint. Spiral Banks Assembly: Multiple columns are clustered into modular spiral banks serviced by centralized pulp distributors and discharge launders. Footprint Efficiency: Delivers exceptionally high processing capacity per square meter of plant floor space, minimizing civil engineering costs.

Due to its static structure and lack of internal moving components, maintenance requirements are minimal. Routine Checks: Daily maintenance is limited to monitoring feed distributor balance, ensuring unblocked pulp nozzles, and checking splitter positioning. Wear Inspection: Periodic visual inspections of the polyurethane lining ensure prolonged wear protection against coarse feed slurry. Low Total Cost of Ownership: The combination of zero electricity, minimal spare parts inventory, and low labor demand ensures a rapid return on investment (ROI).

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Model & Specifications	Outer Diameter (mm)	Pitch Distance (mm)	Pitch-to-Diameter Ratio	Cross Slope /(°)	Number of Spirals	Turns per Spiral	Feed Particle Size/mm	Feed Volume Rate/m3·h-1	Pulp Density/%	Capacity/t·h-1	Overall Dimensions (L×W×H)/mm	Weight/kg
LL-400×180	400	180	0.4	9	1	5	0.2~0.02	0.1~0.2	30~60	0.04~0.08	460×460×1200	20
LL-400×240	400	240	0.6	9	2	5		0.2~0.4		0.1~0.2	460×460×1500	30
LL-600×270	600	270	0.45	9	2	5		1~2		0.5~0.6	700×700×2000	80
LL-600×360	600	360	0.6	9	3、2	5		2~3		0.8~1.2	700×700×2600	100
LL-600×450	600	450	0.75	9 、15、21	3、2	5		3~4		1.0~1.4	700×700×3000	120
LL-900×405	900	405	0.45	9	3、2	5	0.3~0.03	3~5	30~60	1.5~2.5	1060×1060×3300	350
LL-900×540	900	540	0.6	9	4、3	5		5~7		2-3	1060×1060×4000	400
LL-900×675	900	675	0.75	9	4、3	5		7~9		2.5-3.5	1060×1060×4650	450
LL-1200×540	1200	540	0.45	9	3、2	5		7~11		3~4	1360×1360×4330	600
LL-1200×720	1200	720	0.6	9	4、3	5		10~14		4~6	1360×1360×5230	650
LL-1200×900	1200	900	0.75	9	4、3	5		12~16		5~7	1360×1360×6130	700
U-1500X675	1500	675	0.45	9	4	5	0.8~0.037	14	30~45	8	1800×1800×4650	800
U-1500×900	1500	900	0.6	9	4	5	0.8~0.037	15	30~45	8.5	1800×1800×6130	850
DL-2000	2000	1200	0.6	9	2~3	3.5~4	4~0.04	50	15~45	15~40	2300×2300×6500	900

Spiral Chute

Spiral Chute – Product Overview

Zero Energy Consumption & Low OPEX

Efficient Separation of Fine Minerals

Superior Wear & Erosion Resistance

Precise Grade Control with Adjustable Splitters

Compact Footprint & Modular Scalability

Spiral Chute Features and Advantages

Advantages of Jiaozuo Zhongxin Heavy Industry's Spiral Chute and reasons to choose us

What is the working principle of the Spiral Chute?

Product Photos

Specification

RECOMMENDED CRUSHING, SCREENING AND MINERAL PROCESSING EQUIPMENT

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Các vấn đề thường gặp

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Spiral Chute

Spiral Chute – Product Overview

Zero Energy Consumption & Low OPEX

Efficient Separation of Fine Minerals

Superior Wear & Erosion Resistance

Precise Grade Control with Adjustable Splitters

Compact Footprint & Modular Scalability

Spiral Chute Features and Advantages

Advantages of Jiaozuo Zhongxin Heavy Industry's Spiral Chute and reasons to choose us

What is the working principle of the Spiral Chute?

Product Photos

Specification

RECOMMENDED CRUSHING, SCREENING AND MINERAL PROCESSING EQUIPMENT

EXPLORE MORE PRODUCTION LINE SITE PROJECTS

Các vấn đề thường gặp

Q1:What types of minerals and ores can be processed with a Gravity Spiral Concentrator?

Q2:What is the optimal feed particle size range and feed pulp density for spiral chutes?

Q3:How does the gravity spiral concentrator operate with zero power consumption?

Q4:How durable is the spiral trough surface against high-abrasion slurry?

Q5:Are chemical reagents required, and what are the environmental benefits?

Q6:How do plant operators adjust separation efficiency, mineral grade, and recovery rates?

Q7:How is high processing capacity achieved in large-scale industrial plants?

Q8:What are the primary maintenance requirements and long-term operating costs?

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