Performance Chemicals

For paper industries we can offer you
SILICON DEFOAMER
PAPER SLIMICIDE
WET-STRENGTH RESIN
PITCH CONTROL
PAPER RETENTION AID
DEINKING (FLOATATION AND WASH TYPE)
For sugar industries we can offer you
MILL SANITATION CHEMICALS
SUGAR LUSTER CHEMICALS
EVAPORATOR SCALE INHIBITOR
VISCOSITY REDUCER
BOILER WATER TREATMENT


Foam control agents are used to suppress, eliminate, control or prevent foam in industrial process such as paper, rock phosphate, textile. The which are primarily used for the purpose of eliminating or preventing foam are called as defoamers or antifoamers. Products that are more commonly used for control of foam height or to prevent the formation or foam or both, since most of the real differences are in the method of application. Our products go by the generic name defoamers.
Our deformer are formulated from a wide variety of surface active agents, such as silicone oil, mineral oil, glycol, fatty acids, esters, and fatty alcohol.
Our formulations are wide to cover wide applications. These products find applications in air scrubber, waste water treatment plant, pulp and paper, paints, adhesives and coatings.

WHAT ARE THE PROCESS?

There are two basic processes used to deink recycled paper and paper products. Which process is used depends on what type of ink needs to be removed although many more modern process use a combination of the two process .washing is the most basic process used in deinking and uses a non ionic surfactant and base. The other method is flotation deinking, a process that allows the particles to agglomerate and then uses air bubbles to carry the ink particles away the flotation process is often times followed by washing process.

WHAT IS FLOTATION DEINKING?

In flotation deinking chemicals are added to the pulp solution to separate the inks from the fibers. Air bubbles are injected into the pulp and the ink particles attach to the bubbles which rise to the top. This creates a froth layer that is swept off.
1. The air bubble are hydrophobic. The ink particles must be more hydrophobic than the fibers, for this process to work.
2. In order for flotation to work properly ink particles need to be 40-50 um. When they are not this big, COLLECTORS are added .collectors gather small ink particles into larger groups and increase their hydrophobicity.
3. Not all particles are captured by bubble.
4. Studies have been done on just the point and angle that the fiber contact the bubble. The stability of the bubble is very important to this process it has been proven that the attachment of the ink to the bubble helps to resist breakup of the bubble.

FLOTATION MICRO-PROCESS

Particle approaches bubble-àsliding of particle along the surface of bubble--àcontact between particle bubble and fluid -- stabilization of bubble and transport to froth layer

FLOTATION MACRO-PROCESS

Pulping --> deterashing --> fine screening --> flotation (multiple passes) --> washing(optional)
The pulp flotation process has been around a while . it begain as a means to separate minerals. The process has been adapted to paper and has the same concept as with mineral separations .some key factors that had to be taken in to consideration with this change were mineral were always solids whereas inks are not always and minerals are hydrophilic where inks are hydrophobic.

WHAT IS WASHING?

Washing is the mechanical process of rinsing ink, ash and dirt particles from the pulp. In washing, ink is separated from the fiber by using a non-ionic surfactant and base .a surfactant is a molecule that has a non-polar tail and a polar end. The particle that is non polar is attracted to the non polar tail, which places the polar tail as far away from ink particle as possible. The ink remains in the pulp solution and is later filtered away from the fibers.

WHAT ABOUT QUALITY?

Although different processes are used for different types of inks, pigments and dyes sometimes either or both process are appropriate. This is the beakdown when comparing the two processes.

WASHING
Lower yield
Higher fines removal
Higher strength properties
FLOTATION
High yield
Consumes less
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Because most systems use a combination of the two processes, the two deinking systems are rarely compared to each other . most of the time the properties of virgin and deinked pulp are compared.

WHAT CHEMICALS ARE USED?

In the deinking process chemicals are added to the solution in aid in the removasl of the inks and other materials. The list that follows contains the most widely used chemicals and their purposes.

  • Caustic (sodium hydroxide) creates alkalinity and help the ink from the fiber by causing swelling.

  • Hydrogen peroxide –used to bleach and prevent yellowing of mechanically pulped fibers.

  • Hydrosulfite/ fomamidine sulfinic acid (fas) bleaches or removes dyes from colored paper.

  • Sodium silicate—used as a wetting agent and they reduce the surface tension of liquids, which pevent ink particles from re-depositing on fibers.

  • Chelant –the chemical prevents heavy metal ions from decomposing hydrogen peroxide for FAS and make it possible to reduce that amount of sodium silicate required.

  • Collectors are often used in the flotation process to gather the ink particles into large enough groups to be removed . they are anionic, cationic, ampholitic and nonionic.

  • Dispersants are used to lower surface tension and from micelles which ae particles covered with a hydrophilic layer and do not adhere to other particle surfaces in the solution. There are biodegradable dispersants available on the market today.

  • Displectors –these are used in moderns systems that have a combination of floatation and washing.

  • WHAT DOES DEINKING GET OUT?
    The type of deinking process that is used depends on what you are trying to remove from the pulp solution .it is important to remember that the goal of re-pulping is to disperse the ink in water and the goal of deinking is to remove the ink from the water.
    The larger particles are usually removed by flotation. Recycled magazine pulp is a good example of a solution calling for flotation deinking .laser printed papers also require floatation but require two flotation sequences. Newspapers on the other hand required simple washing to get the ink out.
    Not all deinking is merely removing ink paper treated with dyes and pigments can also be recycled and these components are also removed in the deinking process.
    THE DIFFERENCE BETWEEN DYES PIGMENTS and INKS
    1. DYES –there are three types acidic direct and basic.
    2. PIGMENTS – these are inorganic metallic oxides basically they are colored organic compounds some examples ae filers clay, calcium carbonate and titanium dioxide.
    3. INKS inks are a 2-component system comprising of a pigment for color and a vehicle that attaches to the pigment substrate. The simplest ink from is a carbon black pigment that is ground with linseed oil.
    Pigments can be removed by washing or flotation.
    Dyes require color stripping using sodium hydrosulfite, sodium hypochlorite and formamidine sulfinic acid.
    UV and photocopy inks are difficult to remove by conventional methods and require the adding of dispersants or multiple flotations. Water- based inks can be removed simply by either flotation or washing.

    PRODUCTS (ZUCKERMATE Sugar Process Chemicals)

    We also cater following products for sugar processing industries


    MILL SANITATION CHEMICALS
    ZUCKERMATE 1092 / 1094 is a specially developed formulation for application in sugar industry as a mill sanitation chemical in the process. It is very effective to control and prevent the microbial growth in sugar cane juice. The product does not contain oil.

    EVAPORATOR SCALE INHIBITOR
    ZUCKERMATE 802 S is an organic scale inhibitor for retardation of scale formation on the heat transfer surface of the evaporator.
    ZUCKERMATE 802 S is has an ability to keep calcium in solution even in presence of impurities like oxalates, carbonates, sulphates and phosphates. ZUCKERMATE 802 S functions by threshold treatment which delays the precipitation of alkaline hardness. When precipitation occur the precipitate formed is very fine and non-adherent. Besides ZUCKERMATE 802 S has excellent dispersing properties keeping the precipitate formed in suspension preventing any sludging on the heat transfer surface of the evaporator.


    VISCOSITY REDUCER
    ZUCKERMATE 1014 is a liquid pan boiling aid. Specially formulated to reduce the viscosities of syrups and massecuites. It can be used throughout the season

    BOILER WATER TREATMENT
    Boiler water treatment consists of Scale Inhibitor, Corrosion Inhibitor, Alkalinity Builder, Sludge Conditioner, Oxygen Scavenger, etc.