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.
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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Various deinking processes such as flotation, bleaching, and washing. These are used to remove ink from the paper in preparation for producing new paper.
The different aspects of froth flotation, used to separate floatable (hydrophobic) and non-floatable (hydrophilic) ink particles.
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.
Kinds of pulp are distinguished based on their fibre type and the specific chemical processes through which they were created.
The national and international requirements, specifications and guidelines to ensure that products, services and processes are of good quality and fit for purpose.
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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.
Absorb the ink from the substrate, which separates solid particles from liquid material by detergency. This facilitates the separation of ink from fibre.
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.
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.
Take the necessary precautions for storing, using and disposing chemical products.
Continuously check up on the automated machine's set-up and execution or make regular control rounds. If necessary, record and interpret data on the operating conditions of installations and equipment in order to identify abnormalities.
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.
Set up and give commands to a machine by dispatching the appropriate data and input into the (computer) controller corresponding with the desired processed product.
Ensure the machine is fed the necessary and adequate materials and control the placement or automatic feed and retrieval of work pieces in the machines or machine tools on the production line.
Wear relevant and necessary protective gear, such as protective goggles or other eye protection, hard hats, safety gloves.
Check and safely operate machines and equipment required for your work according to manuals and instructions.
No competences in this bucket.
No competences in this bucket.
The range of bleach and others chemicals used to remove the colour from materials in a steam cooking process, adjusting the brightness and colour of the materials.
The methods, materials and regulations used to collect, transport, treat and dispose of waste. This includes recycling and monitoring of waste disposal. It excludes procedures related to waste incineration.
No competences in this bucket.
Ensure quality of recycled papers and pulp, reviewing stickies, plastics, colour, unbleached fibres, brightness, and dirt.
Prepare reports on wood technology production and progressive development of wood based materials.
Add the required amount of bleaching substances and additives and operate the bleaching part of the paper machine, which bleaches the pulp with liquid and solid chemicals, removing any remaining lignin and other impurities.
Acquire test samples at various stages of the paper deinking and paper recycling process. Process the samples, e.g. by adding a measured amount of dye solution, and test them to determine values such as the pH level, the tear resistance or the degree of disintegration.
Remove the chemical solution of the digesting process, making paper pulp soft and fibrous.
Perform waste water treatment according to regulations checking for biological waste and chemical waste.
Check the quality of basic materials used for the production of semi-finished and finished goods by assessing some of its characteristics and, if needed, select samples to be analysed.
Perform cleaning routines after equipment use.
Coordinate and oversee shipments of recycling materials. Communicate with processing companies and shipping brokers.
Dispose of dangerous materials such as chemical or radioactive substances according to environmental and to health and safety regulations.
Dispose of waste materials which pose no risk to health and safety in a manner which complies with recycling and waste management procedures except for waste incineration.
Use various techniques to ensure the product quality is respecting the quality standards and specifications. Oversee defects, packaging and sendbacks of products to different production departments.
Maintain records of the progress of the work including time, defects, malfunctions, etc.
Maintain records and process facts and figures about type and volume of different recycling operations.
Oversee the data presented by a gauge concerning the measurement of pressure, temperature, thickness of a material, and others.
Perform regular maintenance, possibly including corrections and alterations, on a machine or machine tool to ensure it remains in a proper productive state.
Keep records of the machine's faults, interventions and irregularities for quality control.
Maintain required company records and forms in order to report any defective materials or questionable conditions of manufacturing machinery and equipment.