Deinking is a very critical process step in the manufacturing of paper or board from recycled paper or board. In the deinking, printing ink, dirt and specks are removed from the fibers. Deinking is done with a combination of mechanical action and chemicals added into the pulper and at flotation.
Flotation and washing are the main processes used in deinking.
Kemira’s flexible deinking solutions help to enhance the removal of ink from recovered paper. Kemira’s new technology series deinking aids can help you to reduce costs by eliminating hydrogen peroxide and caustic soda used in the pulper. Also Kemira’s latest technology MIP (Modified Inorganic Particle) deinking aids offer significantly improved ink removal performance over conventional soap and surfactant technology.
With Fennoflot yield booster DIP production may be increased 2 to 4%, by reduction of flotation losses and with no change of DIP quality (e.g. Brightness). With the use of Fennoflot yield booster, DIP sludge output may be reduced 13 to 20%. Fennoflot is removed from the deinked pulp and out goes with the flotation rejects. Product efficiency depends on the recovered paper composition and on the deinking process: products are tailored, if needed, to reach the best solution.
Kemira’s Fennoflot deinking solutions are tailored for a variety of processing conditions, recovered paper grades, and quality objectives. With Kemira’s novel low alkali Fennoflot solution for your deinking process, you will be able to minimize or eliminate the use of pulper chemicals, such as caustic and peroxide. Fennoflot solutions help to prevent ink deposition on the paper machine and there is no adverse effect on coefficient of friction. Our deinking aids provide excellent pulp brightness, minimum residual ink values and low speck counts and they are efficient for all types of recovered paper used. This makes it possible to use high levels of deinked pulp, up to 100%, in the final product.
Kemira’s solutions for paper and board recycling comprise a wide selection of chemicals covering the entire paper recycling process, including outstanding technology and technical support for deinking, bleaching, water clarification, sludge dewatering, and deposit control. Kemira is able to offer you the highest degree of deinking and recycling paper experience and expertise available, and we have solutions for virtually every type of process.