Profession froth flotation deinking operator
Froth flotation deinking operators tend a tank that takes in recycled paper and mixes it with water. The solution is brought to a temperature around 50°C Celsius, after which air bubbles are blown into the tank. The air bubbles lift ink particles to the surface of the suspension and form a froth that is then removed.
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- Realistic / Conventional
- Froth flotation processes
The different aspects of froth flotation, used to separate floatable (hydrophobic) and non-floatable (hydrophilic) ink particles.
- Types of pulp
Kinds of pulp are distinguished based on their fibre type and the specific chemical processes through which they were created.
- Deinking processes
Various deinking processes such as flotation, bleaching, and washing. These are used to remove ink from the paper in preparation for producing new paper.
- Types of paper
The different criteria used to determine differences in paper types such as coarseness and thickness, and the different fabrication methods and wood types from which the types of paper stem.
- Work safely with machines
Check and safely operate machines and equipment required for your work according to manuals and instructions.
- Monitor chemical process condition
Monitor the conformity of the chemical process, checking all indicators or warning signals provided by the instruments such as recording instruments, flowmeters and panel lights.
- Tend deinking tank
Monitor the flow of waste paper and set up the controller of the tank in which the paper is mixed with water and heated to a high temperature. Skim the ink froth forming on the surface.
- Work safely with chemicals
Take the necessary precautions for storing, using and disposing chemical products.
- Separate ink
Absorb the ink from the substrate, which separates solid particles from liquid material by detergency. This facilitates the separation of ink from fibre.
- Use deinking chemicals
Handle surfactants or deinking chemicals, which remove ink from fibres. Chemicals such as hydroxides, peroxides, and dispersants are used in processes such as bleaching, flotation, washing, and cleaning. Amongst these non-ionic and electrolyte surfactants are the most important.
- Concentrate pulp slurry
Measure the weight and concentration of the pulp slurry for further processing and storage by using disk filters and calculating slurry density with specific formulas.