Application And Principle Of Laboratory Small Flotation Machine

Flotation is a commonly used mineral processing technology in mines. It can be used to separate and enrich non-ferrous metals, ferrous metals and non-metallic minerals. Due to the differences in the properties of raw ore in each mining area, the flotation processes for various ores must not be exactly the same. Before the flotation process is formulated, mineral processing experiments will be conducted in order to determine the reasonable values of various index parameters in the flotation process. Small laboratory flotation machines play a vital role in the mineral processing industry, aiming to replicate industrial-scale flotation technology on a smaller scale, providing valuable data for optimizing large-scale operations. Here we will briefly introduce the use methods and principles of small flotation machines for laboratories.

Introduction to laboratory small flotation machine

Application Areas

Laboratory small flotation machines are versatile tools that find application in a wide range of industries. Often used for ore separation and extraction in the mining and metallurgical industries. Specific application areas include but are not limited to:
1. From mineral processing to environmental research, these machines play a vital role in separating valuable materials from waste.
2. In the mining industry, small flotation machines are used to extract metals from ore efficiently and economically.
3. In the field of environmental engineering – water treatment, these machines are used to remove pollutants and contaminants from wastewater. Laboratory flotation machines help improve water quality by creating buoyancy based on hydrophobic separation of particles.
4. The pharmaceutical industry also benefits from the use of small flotation machines to efficiently purify compounds and separate different chemical components.
5. Teaching and scientific research: Laboratory flotation machines are used in teaching experiments and scientific research projects in universities and research institutions to help students and researchers understand flotation principles and processes, and conduct related research.


Miniaturization: Compared with flotation equipment in industrial production, small laboratory flotation machines are usually smaller in size and are suitable for use in laboratory environments to save space.

  • Flexibility: Small flotation machines usually have greater operational flexibility and can conduct experiments of different scales and conditions to meet the needs of researchers.
  • Accuracy: The small laboratory flotation machine can provide high experimental data accuracy and help evaluate the flotation performance and extraction rate of ore and other indicators.
  • Controllability: The small laboratory flotation machine can accurately control various parameters during the flotation process, such as stirring speed, bubble size, dosage of chemicals, etc., which is helpful for researchers to deeply understand the flotation mechanism.
  • Economy: Compared with large-scale industrial flotation equipment, small laboratory flotation machines usually have lower costs, which can reduce experimental costs and improve experimental efficiency.
  • Efficiency: The small laboratory flotation machine can complete experiments in a shorter time, improve the work efficiency of researchers, and accelerate scientific research progress.
Application And Principle Of Laboratory Small Flotation Machine

The use methods of laboratory small flotation machine

Always wear appropriate safety equipment such as gloves and goggles when using machines. Here are the specific steps:

(1) Preparation work: Ensure that all components of the laboratory small flotation machine are in normal working condition, such as agitators, bubble generators, etc. Preparing ore samples for experiments usually require grinding and sieving.
(2) Adjust operating parameters: According to the experimental needs, adjust the speed of the mixer and the air flow of the bubble generator, as well as other related parameters, such as the inclination angle of the tank, etc.
(3) Sample addition: Add the prepared ore sample into the experimental tank, paying attention to control the quantity and proportion of the addition.
(4) Adjust reagent addition: According to the experimental design, add corresponding reagents, such as flotation agents, chemicals and regulators, etc., and control the amount and time of addition.
(5) Start the equipment: Start the small laboratory flotation machine, start stirring and bubble action, and ensure that the ore and reagents are fully mixed and contacted.
(6) Real-time observation: During the experiment, real-time monitoring is carried out by observing the generation of bubbles, the state of the ore in the stirring tank, and possible foams.
(7) Stop the experiment: According to the design requirements of the experiment, stop the operation of the equipment at an appropriate time, which is usually determined based on the flotation kinetic curve or experimental results.
(8) Sampling and analysis: After stopping the equipment, take out the samples in the experimental tank and conduct sampling and analysis to evaluate the flotation effect and the flotation characteristics of the ore.
(9) Cleaning and maintenance: After completing the experiment, clean and maintain the experimental equipment to ensure preparation for the next experiment.

When operating a small laboratory flotation machine during the flotation process, you must pay attention to safety and operate in accordance with the relevant experimental procedures and operating manuals.

Flotation process operation

Laboratory small flotation machine is a kind of equipment commonly used in flotation separation laboratories. It is used to flotate and separate ores to extract target minerals. Its working principle is based on flotation and mainly includes the following steps:

(1) Sample preparation: First, mix the ore sample to be processed with water and grind it into fine particles to prepare an appropriate slurry. The target minerals are exposed on the surface to facilitate subsequent flotation operations.
(2) Agent adjustment: According to the properties of the ore and the target minerals that need to be separated, select appropriate agents, including collectors, foaming agents, etc. Adjust the type and dosage of chemicals to achieve the best separation effect.
(3) Stirring and air intake: Put the ground slurry into the tank of the small flotation machine, and then stir it through the stirring device. At the same time, air or other gases are introduced to form bubbles.
(4) Receiving tank: While stirring, add corresponding chemicals to the slurry, such as collectors, foaming agents, etc. The function of these agents is to combine the target minerals with the bubbles to form bubbles that are sufficiently buoyant, while other minerals sink to the bottom.
(5) Flotation: Under the action of chemicals, the target minerals adhere to the bubbles to form floating bubbles, which gradually float to the surface of the slurry to form scum. Other impurity minerals will sink to the bottom with the slurry to form tailings.
(6) Adjust operating parameters: According to the actual situation, the separation effect of scum and tailings can be controlled by adjusting the inclination angle of the tank or adjusting the opening degree of the outlet valve.
(7) Collection: Finally, the scum and tailings are collected separately. After subsequent processing and analysis, the pure product of the target mineral can be obtained. ​

In general, the operating principle of a small laboratory flotation machine is to achieve effective separation of minerals by adjusting operating parameters such as reagents, stirring and ventilation, and taking advantage of the difference in affinity between the target mineral and the bubbles.

Laboratory flotation machines provide a cost-effective way to analyze ore samples and optimize mineral recovery processes. With proper training and adhering to best practices, users can maximize the performance and accuracy of these machines. Asia-Africa International‘s laboratory mineral processing equipment often features advanced automation features that allow precise control and monitoring of critical operating parameters. This not only improves experimental reproducibility, but also enables real-time data analysis for immediate feedback on process performance. Contact us online to get a quote!

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