News, 04-15-2024

The features and benefits of anti-scaling treatments for pulp production

Anti-scaling treatments are targeted solutions used to prevent the formation of scale within pulp production lines.

Scaling is the accumulation of minerals, contaminants and other substances that can concentrate and form deposits on all surfaces during various stages of the production processes and which can compromise the efficiency of the process itself, as well as the quality of the final product.

Focus on scaling

The formation of scaling in the pulping and bleaching phases is a dynamic event that can be caused by several factors: thermal shock, pH changes, intense shear force or the supersaturation concentration of scaling ions.

The most common types of scaling are formed from calcium carbonate, calcium oxalate, barium sulphate and calcium sulphate.

Maredis products (polyacrylates and mixtures thereof) work by facilitating the inhibition, chelation, stabilisation and crystal habit modification of the scaling.

Mare S.p.A.’s range of scaling-control solutions for pulp production processes

Mare anti-scaling treatment helps keep the surfaces of equipment, such as pulp digestor and boilers , clean, thereby improving process efficiency and reducing maintenance costs on machines.

Effective control and dispersion of scale are essential to ensure that the pulp production process always runs as efficiently as possible.

Mare S.p.A. stands out from other suppliers of pulp and paper chemicals due to its range of polyacrylates, which offer excellent scale and deposit inhibition properties.

The Maredis division, polyacrylate specifications

Over the years, Mare S.p.A. has made consistent and continuous investments in this area, creating a wide array of polyacrylate products called Maredis.

The Maredis family consists of a broad range of products, formulated with monomer mixtures including blends using acrylic acid, BA, IBMA, styrene, AMPS, SMS, MMA and MAA as bases.

Maredis products have been in development since the 1980s, for specific applications in the detergent industry.

Through extensive diversification, today it is present in the ceramics, leather, mineral grinding, coating, water treatment and construction sectors.

Maredis polyacrylates are available as:

  • Homo-, co- and terpolymers
  • MW from 2 to 400 kDa
  • Solid content up to 50%
  • pH from completely acidic to completely neutral, as well as a variety of alkaline options.

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