Mac-Cell Flotation Machine

 

Used for removing ink particles in waste pulp.

 

 

• Optimized injector type can gain broad-spectrum air bubbles, which can efficiently remove ink particles and dirt within wider size range. Thereby, be able to gain good cleanliness of pulp, at the same time, part of stickies and filler in pulp can also be removed.
• This equipment has the following merits: full-closed design; clear water dosage is not increased; good operation environment.
• Only one piece can achieve 4~5 stages of floatation; take up smaller floor.
• Injector has stronger self-cleaning ability, thereby injector is not easy to be plugged.

 

 

1.Tank Body

Typically crafted from high-quality stainless steel or other highly corrosion-resistant special materials, it not only possesses sufficient strength to withstand the pressure of the internal pulp and external environment but also exhibits excellent chemical resistance, maintaining stable performance when in long-term contact with various chemicals in the waste paper pulp.

 

The shape and size of the tank body are meticulously designed to provide adequate volume for accommodating a large amount of waste paper pulp and ensure good flow characteristics within the tank, avoiding dead zones or vortices to guarantee the uniformity and stability of the entire flotation process.

 

The inner wall of the tank body might undergo special surface treatments, such as polishing or coating with anti-stick coatings, to reduce the adhesion of pulp and foam on the wall surface, facilitating cleaning and maintenance.

 

2.Bubble Generator

Utilizing advanced technology and precise manufacturing processes, it can stably generate a large number of tiny and uniform bubbles. The diameters of these bubbles are usually within the range of tens to hundreds of micrometers, effectively interacting with the ink particles in the waste paper pulp.

 

The types of bubble generators may include mechanical agitation type, jet type, or microporous type, etc. Each type has its unique working principle and advantages, and can be selected and optimized based on different process requirements and characteristics of the waste paper pulp.

 

To ensure the quality and quantity of the bubbles, the bubble generator is usually equipped with pressure regulating devices, gas flow control devices, and bubble size monitoring devices, etc., to achieve precise control of the bubble generation process.

 

3.Agitation Device

Driven by a high-performance motor, the high rotational speed of the motor is converted to a suitable low speed for agitation through a speed reducer, while increasing the torque to ensure stable operation in an environment filled with waste paper pulp.

 

The shape and layout of the agitation paddles are meticulously designed to effectively promote the uniform mixing of the waste paper pulp within the tank body without damaging the bubbles, enabling the ink particles to fully contact the bubbles and enhance the flotation efficiency.

 

The rotational speed of the agitation device can be adjusted as needed to adapt to waste paper pulps of different concentrations, viscosities, and temperatures, ensuring the best agitation effect under various working conditions.

 

4.Scraper Device

Made of sturdy and durable materials, such as wear-resistant alloys or polymer composites, it can maintain good rigidity and wear resistance during long-term operation, being less prone to deformation or damage.

 

The shape and angle of the scraper are optimized to perfectly match the liquid surface shape of the tank body, effectively scraping the floated ink foam out of the tank while avoiding breaking the foam or leaving excessive ink on the liquid surface.

 

The scraper device usually adopts an automatic or semi-automatic driving method, which can automatically adjust the position and speed of the scraper based on the liquid level and the thickness of the foam, ensuring efficient and stable scraping.

 

5.Inlet and Outlet

The inlet is usually designed as a spacious pipe or funnel shape, and may be internally equipped with guide plates or distributors to ensure that the waste paper pulp containing ink particles can enter the flotation tank evenly and smoothly, avoiding impact and splashing phenomena.

 

At the inlet, pressure sensors and flow controllers might be installed to monitor the pressure and flow of the feed in real-time and automatically adjust according to the process requirements to ensure the stability and accuracy of the feed.

 

The outlet is usually located at the bottom or side of the tank and is designed with an adjustable valve or pump for controlling the outflow speed and flow of the waste paper pulp. The outlet might also be equipped with a filter screen or filter to prevent incompletely floated ink particles or other impurities from flowing out with the pulp.

 

6.Control System

Comprises an advanced electrical control section and intelligent automatic monitoring equipment. The electrical control section consists of high-performance controllers, frequency converters, contactors, relays, etc., enabling precise control of devices such as motors, valves, and pumps.

 

The automatic monitoring equipment includes various sensors, such as liquid level sensors, pressure sensors, temperature sensors, foam thickness sensors, etc., which can monitor various parameters within the flotation tank in real-time and transmit this data to the controller for processing and analysis.

 

The control system is also equipped with a visual operation interface, such as a touch screen or computer monitoring software, through which the operator can intuitively understand the operating status of the equipment, conveniently set and adjust operating parameters, and achieve precise control and optimized management of the entire flotation process.

 

 

1.Feeding：The waste paper pulp containing ink particles smoothly enters the interior of the Mac-Cell Flotation Machine through specific conveying equipment, such as pipes or pumps, from the inlet. During the feeding process, the design and control device of the inlet ensure that the waste paper pulp can be uniformly distributed across the cross-section of the tank, creating favorable initial conditions for the subsequent flotation process.

 

2.Bubble Generation：The bubble generator starts to work, dispersing the introduced air or other gases into a large number of tiny and uniform bubbles through its internal mechanical, jet, or microporous actions. These bubbles rapidly rise and fully contact the waste paper pulp during the ascent.

 

3.Flotation Process：Due to the difference in surface properties, the ink particles in the waste paper pulp have a certain affinity for gas. When the bubbles encounter the ink particles, the ink particles attach to the surface of the bubbles, forming ink-bubble complexes. Due to the buoyancy of the bubbles, these complexes gradually rise to the liquid surface, forming ink foam.

 

4.Scraping Foam：As the ink foam accumulates on the liquid surface, the scraper device initiates action. The scraper rotates or moves at a certain speed and angle, scraping the floated ink foam from the liquid surface and guiding it to a dedicated collection tank or pipe, achieving the separation of ink particles from the waste paper pulp.

 

5.Discharging：After the flotation treatment, the content of ink particles in the waste paper pulp is significantly reduced, and the quality is improved. The treated waste paper pulp flows out from the outlet and enters the next process, such as washing, screening, or the wire section of the paper machine, etc., to continue subsequent processing and treatment.

 

 

1.Efficient Deinking

Thanks to its advanced structural design and optimized working principle, it can efficiently remove ink particles in the waste paper pulp, significantly improving the whiteness and cleanliness of the waste paper pulp, providing a strong guarantee for the production of high-quality recycled paper products.

Compared with traditional deinking methods, the Mac-Cell Flotation Machine has higher deinking efficiency and can handle more complex and challenging waste paper pulps, adapting to different types and sources of waste paper raw materials.

 

2.Precise Control

The equipped advanced control system can precisely adjust the size, distribution, and quantity of the bubbles, as well as the rotational speed of the agitation device, the action frequency of the scraper device, and other key parameters. Through precise control of these parameters, personalized flotation processes can be achieved based on the characteristics and processing requirements of different waste paper pulps, ensuring the best effect for each treatment.

It can monitor and feedback various operating parameters within the flotation tank in real-time, such as liquid level, pressure, temperature, foam thickness, etc., enabling the operator to promptly detect and solve potential problems, ensuring the stable operation of the equipment and the consistency of the processing effect.

 

3.Low Energy Consumption

The optimized structural design and working process minimize energy consumption during operation. For example, the efficient bubble generator and agitation device can reduce unnecessary energy losses while ensuring the processing effect; the reasonable tank body design and fluid dynamics characteristics can reduce the resistance of the pulp during flow, reducing the energy required for pumping and agitation.

Advanced energy-saving technologies and equipment, such as variable frequency drive motors and intelligent control systems, can automatically adjust the operating power of the equipment based on the actual load, further reducing energy consumption and saving production costs.

 

4.Simple Operation

It features an intuitive and easy-to-understand operation interface and an automated control program, allowing operators to master the operation and maintenance methods of the equipment proficiently after simple training.

The operations of starting, stopping, and parameter adjustment of the equipment can be easily completed through the control panel or computer software, significantly reducing the working intensity and difficulty of the operators.

At the same time, the equipment is also equipped with fault self-diagnosis and alarm functions, which can promptly remind the operators to handle potential problems, improving the operational reliability and stability of the equipment.

 

5.Strong Adaptability

It can adapt to waste paper pulps of different types, concentrations, and temperatures. Whether from office waste paper, old newspapers, or other sources of waste paper raw materials, it can effectively perform deinking treatment.

It can be seamlessly integrated and work collaboratively with other paper-making equipment and processes, and its position and role in the production line can be flexibly adjusted based on production needs, providing more options and flexibility for paper-making enterprises.

 

 

Type	ZFM1	ZFM2	ZFM3	ZFM4	ZFM5	ZFM6	ZFM7	ZFM8	ZFM9	ZFM10
Flow rate：m³/h	256	400	512	624	800	976	1152	1344	1456	1600
Layers	4～5
Treating consistency：%	1.1±0.1
Capacity of production：t/d	55～65	85～100	110～130	130～160	170～210	210～250	240～300	290～350	310～380	340～420
Consistency of ink：%	2～3

 

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