Mineral Thickener

Tank Diameter Range

3m – 100m

Underflow Concentration

Up to 50% – 70%

Processing Capacity: 1.5 – 3 times higher capacity per unit area than conventional thickeners

Core Applications: Mineral concentrate dewatering, tailings management & industrial water recycling

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Product Overview & Slurry Dewatering Solutions

◎The Jiaozuo Zhongxin Mineral Thickener is a heavy-duty continuous solid-liquid separation machine designed for slurry dewatering, concentrate thickening, and tailings treatment. It combines gravity sedimentation with automatic flocculant dosing to accelerate settling, produce high-density underflow, and recover up to 95% clear overflow water for reuse.

◎High-Efficiency Sedimentation: An optimized feed well improves slurry distribution and settling efficiency, providing processing capacity up to 300% higher than conventional settling tanks.

◎Smart Rake Protection: The PLC-based torque monitoring system detects excessive rake resistance and automatically lifts the rake to prevent blockage, motor overload, and equipment damage.

◎Durable & Economical: Corrosion-resistant construction, low energy consumption, and reduced flocculant usage help lower maintenance and operating costs while ensuring reliable long-term performance.

◎The Jiaozuo Zhongxin Mineral Thickener provides an efficient and cost-effective solution for mineral processing, concentrate recovery, slurry dewatering, and tailings managemen

Working Principle & Sedimentation Process

A mineral thickener is a continuous solid-liquid separation machine designed to accelerate slurry dewatering, concentrate thickening, and tailings management through gravity sedimentation. Its working process consists of three main stages:

◎1. Slurry Feeding & Flocculation
Mineral slurry enters the central feed well, where an automatic flocculant dosing system adds polymer flocculants. The flocculants bind fine suspended particles into larger flocs, significantly increasing their settling speed and improving the efficiency of solid-liquid separation.

◎2. Sedimentation & Mechanical Raking
As solid particles settle toward the bottom of the thickener tank, slowly rotating rakes continuously collect and move the concentrated sludge toward the central discharge cone. An integrated PLC torque monitoring system detects excessive resistance and automatically activates the rake lifting mechanism when overload occurs, helping prevent clogging and equipment damage.

◎3. Discharge & Water Recovery
The concentrated underflow is discharged through the bottom cone and can be sent to a filter press for further dewatering or used in dry stacking processes. At the same time, clarified water overflows from the upper part of the tank and can be recovered for recycling throughout the mineral processing plant.

This continuous process provides efficient thickening, reliable tailings handling, and effective water recovery for modern mining and mineral beneficiation plants.

Plant-wide water recycling and zero-emission system driven by high-efficiency mineral thickener

Rotation Speed	Diameter (m)	Central Depth (mm)	Settling Area (m2)	Rotation Speed (r/min )	Rake Lifting Height (mm)	Production Capacity (m3/h )	Oil Pump Motor Unit	Rake Lifting Cylinder	Power (kW)
NXZ-6	F 6	3100	28	2.5-5	350	50-100	10SCY-112M-4	HGS63/50	4
NXZ-9	F9	3957	69	5-10	500	100-200	10SCY-112M-4	HGS63/50	4
NXZ-12	F 12	4365	113	5-10	500	300-400	10SCY-112M-4	HGS63/50	5.5
NXZ-15	F-15	4551	176	50-10	500	400-600	25SCY-132M-4	HGS63/50	7.5
NXZ-18	F18	5304	250	4-15	500	650-900	25SCY-132M-4	HGS63/50	7.5
NXZ-24	F24	5533	460	5-20	500	1000-1500	25SCY-132M-4	HGS63/50	7.5
NXZ-30	F30	6790	706	10-22	500	1500-2000	25SCY-132M-4	HGS63/50	7.5+4
NXZ-38	F38	5079	1133	12-30	600	2000-2500	40SCY-160M-4	HGS140/50	11+4
NXZ-45	F45	5079	1590	14-30	600	2400-3000	40SCY-160M-4	HGS140/50	11+5.5
NXZ-53	F53	7517	2206	17-30	600	3000-4000	63SCY-160M-4	HGS160/70	15+5.5
NXZ-60	F60	8439	2826	19-35	600	4000-6000	80SCY-160M-4	HGS160/70	22+7.5
NXZ-80	F80	9385	5026	25-40	600	8000-11000	120SCY-200L-4	HGS180/90	30+7.5
NXZ-100	F100	7853	7853	32-50	800	15000-18000	120SCY-200L-4	HGS180/90	37+11

Rotation Speed

Diameter (m)

Central Depth (mm)

Settling Area (m2)

Rotation Speed (r/min )

Rake Lifting Height (mm)

Production Capacity (m3/h )

Oil Pump Motor Unit

Rake Lifting Cylinder

Power (kW)

NXZ-6

F 6

3100

2.5-5

350

50-100

10SCY-112M-4

HGS63/50

NXZ-9

3957

5-10

500

100-200

10SCY-112M-4

HGS63/50

NXZ-12

F 12

4365

113

5-10

500

300-400

10SCY-112M-4

HGS63/50

5.5

NXZ-15

F-15

4551

176

50-10

500

400-600

25SCY-132M-4

HGS63/50

7.5

NXZ-18

F18

5304

250

4-15

500

650-900

25SCY-132M-4

HGS63/50

7.5

NXZ-24

F24

5533

460

5-20

500

1000-1500

25SCY-132M-4

HGS63/50

7.5

NXZ-30

F30

6790

706

10-22

500

1500-2000

25SCY-132M-4

HGS63/50

7.5+4

NXZ-38

F38

5079

1133

12-30

600

2000-2500

40SCY-160M-4

HGS140/50

11+4

NXZ-45

F45

5079

1590

14-30

600

2400-3000

40SCY-160M-4

HGS140/50

11+5.5

NXZ-53

F53

7517

2206

17-30

600

3000-4000

63SCY-160M-4

HGS160/70

15+5.5

NXZ-60

F60

8439

2826

19-35

600

4000-6000

80SCY-160M-4

HGS160/70

22+7.5

NXZ-80

F80

9385

5026

25-40

600

8000-11000

120SCY-200L-4

HGS180/90

30+7.5

NXZ-100

F100

7853

32-50

800

15000-18000

120SCY-200L-4

HGS180/90

37+11

Model	Thickener Tank Diameter (mm)	Thickener Tank Depth (mm)	Rake Frame Speed (r/min)	Motor Model	Motor Power (kW)	Motor Speed (r/min)	Processing Capacity (t/d)	Tank Weight (t)	Total Weight (t)
NZS1	1800	1800	0.5	Y90L-6	1.1	910	1.3~5.6	602	1300
NZS2.5	2500	1800	0.33	Y90L-6	1.1	910	5~ 10.8	1730	2355
NZS3	3600	1800	0.33	Y100L-6	1.5	940	5~22.4	1730	2975
NZS5.5	5500	2956	0.3	Y100-6	1.5	1400	10.50	2020	5980
NZS6	6000	2956	0.3	Y90L-4	1.5	1400	14~62	5690	8700
NZS8	8000	3318	0.27	Y132S-6	3	960	25~ 120	11065	15460
NZS9	9000	3000	0.25	Y132S-6	3	960	32~ 150	12188	16682
NZS12	12000	3600	0.19	Y132M-6	3	960	50~250	24060	33131
NZS15	15000	3600	0.1	Y132M-6	5.5	960	70~350	35269	55499
NZS18	18000	4400	0.13	Y132M-6	5.5	960	100~560	Excluding	10139
NZS20	20000	4400	0.13	Y132M-6	5.5	960	200~960	22566
NZS24	24000	4400	0.1	Y160L-8	7.5	720	200~ 1440	24500

Model

Thickener Tank Diameter (mm)

Thickener Tank Depth (mm)

Rake Frame Speed (r/min)

Motor Model

Motor Power (kW)

Motor Speed (r/min)

Processing Capacity (t/d)

Tank Weight (t)

Total Weight (t)

NZS1

1800

0.5

Y90L-6

1.1

910

1.3~5.6

602

1300

NZS2.5

2500

1800

0.33

Y90L-6

1.1

910

5~ 10.8

1730

2355

NZS3

3600

1800

0.33

Y100L-6

1.5

940

5~22.4

1730

2975

NZS5.5

5500

2956

0.3

Y100-6

1.5

1400

10.50

2020

5980

NZS6

6000

2956

0.3

Y90L-4

1.5

1400

14~62

5690

8700

NZS8

8000

3318

0.27

Y132S-6

960

25~ 120

11065

15460

NZS9

9000

3000

0.25

Y132S-6

960

32~ 150

12188

16682

NZS12

12000

3600

0.19

Y132M-6

960

50~250

24060

33131

NZS15

15000

3600

0.1

Y132M-6

5.5

960

70~350

35269

55499

NZS18

18000

4400

0.13

Y132M-6

5.5

960

100~560

Excluding

10139

NZS20

20000

4400

0.13

Y132M-6

5.5

960

200~960

22566

NZS24

24000

4400

0.1

Y160L-8

7.5

720

200~ 1440

24500

Common Problems

This section is designed to address the most pressing inquiries customers may have regarding the daily operation, maintenance, product advantages, and after-sales service of our machine. Our aim is to help you gain a comprehensive understanding of our overall capabilities and enable you to make informed decisions for your projects.

A mineral thickener is a continuous liquid-solid separation machine designed for slurry dewatering, concentrate thickening, and tailings management. Operating on the principle of gravity sedimentation, it separates fine solid particles from liquid in a settling tank. Flocculants are introduced into the feed well to accelerate particle aggregation, allowing clear overflow water to be recycled while concentrated sludge is discharged from the bottom cone.

The primary difference lies in the driving mechanism and tank size: Central Drive Thickener: The driving mechanism is mounted on a central bridge or steel truss, ideal for small to medium-sized tanks (typically under 30 meters in diameter). Peripheral Drive Thickener: The drive motor travels along a perimeter rail on the concrete wall, designed for large-diameter tanks (30 to 100+ meters) handling massive slurry dewatering volumes in large open-pit mining operations.

During heavy ore thickening or sudden power outages, high-density sludge can accumulate at the bottom, creating extreme torque on the rakes. An automatic rake lifting system equipped with PLC torque monitoring automatically raises the rake assembly when resistance exceeds safety limits, preventing mechanical breakage, motor overload, and tank clogging.

Adding polymer coagulants via an automated flocculant dosing system neutralizes particle charges and binds fine suspended solids into larger, heavier flocs. This dramatically accelerates the settling velocity, increasing the throughput capacity of a high-efficiency thickener by up to 300% compared to natural gravity settling without chemicals.

A deep cone thickener features a tall cylindrical structure with a steep cone bottom, maximizing sludge bed compression. It typically achieves high underflow concentrations of 50%-70% solids by weight. This paste-like sludge is ideal for direct pumping to a filter press for tailings dry stacking or underground paste backfill.

Yes. Optimized mineral thickeners deliver exceptionally high overflow water clarity. The clarified liquid collected in the perimeter launder can be immediately recirculated back into grinding, flotation, and magnetic separation circuits, enabling up to 90%-95% water recycling and helping mining plants achieve zero liquid discharge (ZLD).

Sizing an industrial ore thickener requires calculating the unit settling area and rise rate. Key engineering inputs include:Daily dry solids throughput ，Slurry feed density and particle size distribution (PSD)， Desired underflow solids concentration and overflow clarity，Flocculant type and settling velocity tests

Key maintenance practices include routinely checking drive gearbox lubrication, inspecting wear-resistant rubber or ceramic coatings on the rake blades, testing the automatic rake lifting limit switches, and calibrating the PLC torque sensors and flocculant dosing pumps to prevent slurry scaling and mechanical wear.

COMPREHENSIVE SERVICE & GENUINE SPARE PARTS

Zhongxin Heavy Industry provides not only high-performance equipment but also full life-cycle support solutions.

Genuine OEM Spare Parts & Wear Liners

We supply high-durability original spare parts, including heavy-duty rake blades, wear-resistant rubber or ceramic liners, planetary gearboxes, and automated flocculant dosing system components to minimize downtime.

Lab Settling Tests & Global Commissioning

Our mining engineers offer precise lab settling test analyses (m²/t . d)to optimize thickener sizing, paired with complete overseas engineering support, from civil design guidance to on-site automatic rake lifting calibration.

Lifetime Technical Support & Training

We provide 24/7 global technical assistance and complete operator training covering PLC torque monitoring, preventative maintenance schedules, and operational optimization to reduce long-term chemical (OPEX) costs.

Product Inquiry

Mineral Thickener

◎The Jiaozuo Zhongxin Mineral Thickener is a heavy-duty continuous liquid-solid separation system engineered for efficient slurry dewatering, concentrate thickening, and tailings management. By accelerating gravity sedimentation through an automated flocculant dosing system, it produces high-density underflow while recovering up to 95% clear overflow water for plant-wide reuse.
Core Advantages & Applications
High-Efficiency Sedimentation: Optimized feed well design increases throughput capacity by up to 300% compared to conventional settling tanks.
Smart Rake Protection: Advanced PLC torque monitoring automatically triggers the automatic rake lifting system during heavy loads to prevent clogging and motor burnout.
Flexible Configurations: Available in central drive, peripheral drive, and deep cone models (3m to 100m+ diameter) for copper, gold, iron ore, and tailings dry stacking projects.

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Mineral Thickener

Product Overview & Slurry Dewatering Solutions

High-Efficiency Slurry Dewatering

Superior Water Recycling

Smart PLC Automatic Rake Lifting

Heavy-Duty Tailings Management

Low Power & Operating Costs

Key Features & Performance Advantages

Why Choose Jiaozuo Zhongxin Heavy Industry for Your Mineral Thickener?

Working Principle & Sedimentation Process

Product Photos

Specification

RECOMMENDED CRUSHING, SCREENING AND MINERAL PROCESSING EQUIPMENT

EXPLORE MORE PRODUCTION LINE SITE PROJECTS

Common Problems

COMPREHENSIVE SERVICE & GENUINE SPARE PARTS

Genuine OEM Spare Parts & Wear Liners

Lab Settling Tests & Global Commissioning

Lifetime Technical Support & Training

Product Inquiry

Our Website

Mineral Thickener

Product Overview & Slurry Dewatering Solutions

High-Efficiency Slurry Dewatering

Superior Water Recycling

Smart PLC Automatic Rake Lifting

Heavy-Duty Tailings Management

Low Power & Operating Costs

Key Features & Performance Advantages

Why Choose Jiaozuo Zhongxin Heavy Industry for Your Mineral Thickener?

Working Principle & Sedimentation Process

Product Photos

Specification

RECOMMENDED CRUSHING, SCREENING AND MINERAL PROCESSING EQUIPMENT

EXPLORE MORE PRODUCTION LINE SITE PROJECTS

Common Problems

Q1:What is a mineral thickener, and how does it work in a mineral processing plant?

Q2:What is the difference between a central drive thickener and a peripheral drive thickener?

Q3:Why is an automatic rake lifting system essential for heavy-duty ore thickeners?

Q4:How does flocculant dosing improve the efficiency of a high-efficiency thickener?

Q5:What underflow solid concentration can a deep cone thickener achieve for tailings dry stacking?

Q6:Can the overflow water from the mineral thickener be directly reused in the plant?

Q7:What key factors determine the sizing of a slurry dewatering thickener?

Q8:What maintenance is required to ensure long service life for a tailings thickener?

COMPREHENSIVE SERVICE & GENUINE SPARE PARTS

Genuine OEM Spare Parts & Wear Liners

Lab Settling Tests & Global Commissioning

Lifetime Technical Support & Training

Product Inquiry

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