راهنمای تجهیزات معدنی: What Equipment Should You Use for Flotation in Medium and Large Concentrators? A Complete Guide to BS-K Air-Inflation Flotation Machines

The BS-K type aeration flotation machine is an aeration flotation device suitable for flotation operations in medium and large-scale concentrators. It features a large aeration capacity, strong processing ability, and is suitable for large-scale flotation operations. This equipment introduces air into the flotation tank through an external blower, and with the help of an impeller for stirring, fully mixes the pulp with reagents, forming a large number of mineralized bubbles, thereby achieving efficient separation of valuable minerals from gangue minerals. Why choose the BS-K type aeration flotation machine? First, it has a large aeration capacity, with a maximum aeration rate of 2–20 m³/min, which can effectively improve flotation efficiency and throughput; second, it has strong processing capacity, with an effective volume of 2.2–38 m³, meeting the needs of large-scale flotation operations in medium and large concentrators; third, it is suitable for large-scale operations, with stable equipment structure and reliable operation, suitable for continuous production; fourth, the supporting blower has adjustable air pressure, allowing the aeration rate to be adjusted according to different ore properties and flotation process requirements; fifth, the impeller speed and scraper motor power are reasonably configured, ensuring thorough pulp stirring and stable flotation indicators. The BS-K type aeration flotation machine is mainly used for flotation operations in medium and large concentrators, including roughing, cleaning, and reverse flotation of non-ferrous metal ores (copper, lead, zinc, molybdenum, etc.), ferrous metal ores (iron, manganese, etc.), and non-metallic ores. The target users of the BS-K type aeration flotation machine include medium and large concentrators, mining enterprises, beneficiation equipment EPC contractors, concentrator equipment maintenance and replacement purchasing teams, equipment distributors and stockists, and overseas mining project procurement parties. Under what circumstances should the BS-K type aeration flotation machine be selected or replaced? When constructing a new medium or large concentrator that requires configuration of aeration flotation equipment; when the old flotation machine has insufficient aeration capacity, low processing ability, or poor flotation performance and needs upgrading; when the beneficiation process is being upgraded and higher flotation throughput and recovery are required; when handling pulp of different properties and concentrations, requiring adjustable aeration; or when export projects require an aeration flotation machine compatible with overseas voltage and efficient flotation conditions. How to choose the BS-K type aeration flotation machine? First, confirm the processing and aeration requirements, and select the corresponding model according to the concentrator’s capacity; second, confirm the effective volume and choose 2.2–38 m³ according to the pulp processing amount and flotation time. Step 3: Confirm the impeller diameter and rotation speed. Choose 420-910mm and 260-141 r.p.m based on pulp concentration and ore properties; Step 4: Confirm blower air pressure. Choose ≥15-≥34 kPa according to the aeration volume and flotation tank depth; Step 5: Confirm the scraper motor power. Choose 1.8-12.7 kW based on foam layer thickness and scraping capacity; Step 6: Confirm the installation foundation. It must be installed on a solid concrete foundation with anchor bolts; Step 7: Confirm the connection of pulp and reagent inlet and outlet pipelines to ensure smooth aeration and circulation; Step 8: Confirm environmental protection and automation configuration. It can be equipped with a dust removal system and central control system.

BS-K type aeration flotation machine specifications and performance parameters table

Model	Effective volume (m³)	Processing capacity (m³/min)	Impeller diameter (mm)	Impeller speed (r.p.m)	Blower air pressure (kPa)	Maximum aeration volume (m³/min)	Scraper motor power (kW)	Single tank weight (t)
BS-K2.2	2.2	0.5-3	420	260	≥15	2-3	1.8	1.8
BS-K4	4	0.5-4	500	220	≥17	3-5	2.6	2.6
BS-K6	6	1.0-6	650	197	≥21	4-10	3.8	3.8
BS-K8	8	1.0-8	650	180	≥21	4-10	6.5	6.5
BS-K16	16	2.0-15	750	160	≥27	6-15	9.2	9.2
BS-K24	24	7.0-20	830	154	≥29	8-18	10.4	10.4
BS-K38	38	10.0-30	910	141	≥34	10-20	12.7	12.7

General technical parameters table

Parameter	Specification
Series	BS-K
Type	Aeration flotation machine
Effective volume	2.2–38 m³
Processing capacity	0.5–30 m³/min
Impeller diameter	420–910 mm
Impeller speed	141–260 r.p.m
Blower air pressure	≥15–≥34 kPa
Maximum aeration volume	2–20 m³/min
Scraper motor power	1.8–12.7 kW
Single tank weight	1.8–12.7 t
Core advantages	Large aeration volume, high processing capacity, suitable for large-scale flotation operations, reliable operation
Applicable scenarios	Flotation operations in medium and large mining plants, roughing, cleaning, and scavenging of non-ferrous metals, ferrous metals, and non-metallic ores

Dimension drawings and key dimensions

`[Image: /images/bs-k-air-inflation-flotation-machine-dimension-drawing.webp]`

Material Table

Component	Standard Material	Optional Material	Description
Tank Body	Carbon Steel	Stainless Steel, Wear-resistant Steel Plate	Bears slurry and chemicals; requires rust and wear resistance
Impeller	High Manganese Steel, Wear-resistant Alloy	Stainless Steel, Rubber Lining	Core wear-prone part, highly wear-resistant
Stator	Carbon Steel	Stainless Steel, Wear-resistant Steel Plate	Enhances stirring and circulation capacity
Main Shaft	40Cr/42CrMo Forging	Alloy Steel	Quenching and tempering treatment, bears torque
Bearing	Self-aligning Roller Bearing	Double-row Cylindrical Roller Bearing	Bears heavy load and impact
Blower	Carbon Steel/FRP	Stainless Steel	Provides inflation airflow, adjustable air pressure
Scraper Device	Carbon Steel/Stainless Steel	Wear-resistant Alloy	Scrapes off foam layer, motor-driven
Motor	All-copper Coil Motor	Explosion-proof Motor	Standard Three-phase Asynchronous Motor
Control Box	Carbon Steel/Stainless Steel	Rainproof and dustproof type	Optional variable frequency speed control

Installation Method

The BS-K type aeration flotation machine must be installed on a solid concrete foundation that can bear the equipment's self-weight and dynamic load during operation. During installation, the foundation level must meet the requirements, and the anchor bolts should be tightened according to the torque specifications. After positioning the equipment, adjust the level to ensure the impeller is parallel with the motor shaft. The motor and reducer are connected via belt or direct drive, and the belt tension or alignment accuracy should be adjusted to ensure smooth transmission. The gap between the impeller and stator should be uniform. Connections for slurry and reagent inlet and outlet pipelines must be well-sealed. The aeration pipeline must be connected to the blower to ensure the aeration volume is adjustable. After installation, a no-load trial run should be conducted to check whether the impeller rotates smoothly, whether there is abnormal vibration or noise, and to ensure there is no leakage in the aeration pipeline. The load trial run should gradually increase the feed volume, monitoring flotation performance and motor current to ensure it does not exceed the rated current. A dust removal system should be installed to reduce dust pollution. A central control system can be installed to achieve online monitoring and automatic control.

Application Scenario Table

Industry	Application	Recommended Configuration	Key Requirements
Non-ferrous metal ore dressing	Roughing, cleaning, and reverse flotation of copper, lead, zinc, molybdenum, etc.	BS-K2.2–BS-K38	Large aeration volume, high processing capacity, stable flotation indicators
Ferrous metal ore dressing	Flotation of iron ore, manganese ore, etc.	BS-K4–BS-K38	Large processing volume, reliable operation, wear-resistant
Non-metallic mineral ore dressing	Flotation of non-metallic minerals	BS-K2.2–BS-K16	Adjustable aeration volume, good separation effect
Medium and large-scale mineral processing plants	Large-scale flotation operations	BS-K16–BS-K38	Large aeration volume, high processing capacity, continuous production
Mineral processing technology renovation	Increase flotation processing capacity and recovery rate	BS-K6–BS-K24	Adjustable aeration volume, stable operation, easy maintenance

Notes

The BS-K type gas-filled flotation machine is suitable for flotation operations in large and medium-sized concentrator plants, with an effective volume of 2.2-38m³, a processing capacity of 0.5-30m³/min, blower air pressure ≥15-≥34kPa, and a maximum charging capacity of 2-20m³/min. Explosion-proof motors are required for explosive environments. For highly abrasive materials, it is recommended to use high-manganese steel or wear-resistant alloy impellers and linings.

## Technical FAQ

1. What is the BS-K type inflatable flotation machine?

The BS-K type inflatable flotation machine is an inflatable flotation equipment suitable for flotation operations in medium and large concentrators. It features a large gas filling capacity, strong processing capacity, and is suitable for large-scale flotation operations.

2. What is the working principle of the BS-K type inflatable flotation machine?

Air is injected into the flotation tank by an external blower, and together with the impeller stirring, the slurry and agent are fully mixed, forming a large number of mineralized bubbles. Useful minerals adhere to the bubbles and float to the foam layer, where they are scraped out by the scraper, thereby separating useful minerals from gangue minerals.

3. What are the models of the BS-K type inflatable flotation machine?

BS-K gas-filled flotation machine models include BS-K2.2, BS-K4, BS-K6, BS-K8, BS-K16, BS-K24, and BS-K38.

4. What are the effective volume and processing capacity of the BS-K type inflatable flotation machine?

Effective volume 2.2-38m³, treatment capacity 0.5-30m³/min, varies by model.

5. What are the impeller diameter and speed of the BS-K type inflatable flotation machine?

Impeller diameter 420-910mm, impeller speed 141-260 r.p.m, varying by model.

6. What are the blower air pressure and maximum inflation capacity of the BS-K type inflatable flotation machine?

Blower: Air pressure ≥ 15-≥34kPa, maximum air supply 2-20m³/min, varies by model.

7. What is the power of the scraper motor of the BS-K type inflatable flotation machine?

Scraper motor power ranges from 1.8 to 12.7 kW, varying by model.

8. What is the weight of a single tank of the BS-K type pneumatic flotation machine?

The weight of a single tank is 1.8-12.7 tons, varying according to the model.

9. What are the wear parts of the BS-K type pneumatic flotation machine?

Impellers, stators, bearings, scrapers, etc. Among them, the impeller is the core wear part, and it is recommended to choose high manganese steel or wear-resistant alloy material.

10. What are the common faults of the BS-K type pneumatic flotation machine?

Impeller wear (due to highly abrasive materials), bearing overheating (poor lubrication or overload), air pipe leakage (insufficient aeration), scraper device jamming (too thick foam layer or foreign object blockage), poor flotation performance (insufficient aeration or improper reagent addition).

11. Does the BS-K type pneumatic flotation machine need a foundation?

Yes. It needs to be installed on a solid concrete foundation, which should bear the equipment's own weight and operational dynamic load, and be fixed with anchor bolts.

12. Can the BS-K type pneumatic flotation machine be used in medium and large-scale concentrators?

Yes, it is a pneumatic flotation device specifically designed for large-scale flotation operations in medium and large concentrators, with high aeration capacity and strong processing ability.

13. Can the BS-K type pneumatic flotation machine be customized?

Yes, motor power, impeller material (high manganese steel/wear-resistant alloy/stainless steel), motor configuration (explosion-proof motor), tank material (carbon steel/stainless steel), aeration adjustment method, and central control system can be customized.

14. What is the difference between the BS-K type pneumatic flotation machine and the XJK flotation machine?

The BS-K type is a pneumatic flotation machine aerated by an external blower, with large aeration suitable for large-scale flotation operations in medium and large concentrators; the XJK type is a traditional mechanical agitation flotation machine, simple in structure and reliable in operation, suitable for small and medium concentrators and rough selection, fine selection, and reverse flotation operations.

15. What materials are suitable for the BS-K type pneumatic flotation machine?

Suitable for flotation of non-ferrous metal ores (copper, lead, zinc, molybdenum, etc.), ferrous metal ores (iron, manganese, etc.), and non-metallic ores.

16. How to maintain the BS-K type pneumatic flotation machine?

Regularly check the wear condition of impellers, stators, bearings, and scrapers, and replace or adjust them in time; regularly check the airtightness of the pneumatic pipeline to prevent gas leakage; regularly check the belt tension; regularly check whether the foundation bolts and connecting bolts are loose; regularly clean accumulated materials and foreign objects in the tank; regularly check the operating status of the blower.

17. Does the BS-K type aeration flotation machine comply with RoHS and REACH?

Standard equipment complies with RoHS and REACH regulations and does not contain SVHC (Substances of Very High Concern). The specifics are subject to the product inspection report.

18. How to adjust the aeration amount of the BS-K type aeration flotation machine?

Adjust the airflow by regulating the blower flap or frequency converter to control the aeration amount, meeting the requirements of different ore properties and flotation processes.

19. How should the BS-K type aeration flotation machine be used in conjunction with the high-weir spiral classifier and high-efficiency agitator tank?

The high-weir spiral classifier and ball mill form a closed circuit flow, responsible for classifying the particle size of the ground product; the high-efficiency agitator tank is placed before flotation operations to fully mix the classified slurry with flotation reagents; the BS-K type aeration flotation machine is positioned after the agitator tank and is responsible for flotation separation.

20. How to select the model of the BS-K type aeration flotation machine?

Select the model with an effective volume of 2.2–38 m³ according to the processing capacity and flotation process requirements of the beneficiation plant; choose impeller diameter and rotational speed according to pulp concentration and ore properties; select the blower pressure based on aeration volume and flotation tank depth; and choose scraper motor power according to foam layer thickness and scraping quantity.

Technical FAQ

Which test data improves equipment selection?

Provide feed assay, particle-size distribution, slurry density, liberation size and target recovery or concentrate grade.

Can one machine handle every ore?

No. Mineral properties and process conditions change the required separation method, size and configuration.

Authoritative references

For standards and safety context, see ISO standards and the U.S. Mine Safety and Health Administration. Confirm the exact local requirements for your project.

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