Ross SLIM Powder Injection Mixers
with New Hopper Design
Ross has announced new developments
to its line of High Shear Mixers with
Solids/Liquid Injection Manifold (SLIM)
Technology. Designed for high-speed and
high-volume mixing requirements, the
SLIM is a unique rotor/stator device capable of injecting powders directly into
a fast-moving liquid stream without the
need for an eductor or pump. One of the
key innovations now being offered is a
special hopper that promotes improved
flow of various solids for more efficient
induction to the mix chamber, according to the company. The hopper features
multiple ports to accommodate air pulse
devices that would prevent bridging of
challenging powders. Another new option is the pneumatically-actuated ball
valve for precise modulation of the powder injection rate.
The 30HP SLIM Mixers are each
equipped with a ported four-blade rotor
designed to run up to 1,800 rpm and a
stator head with large square holes for
maximum pumping capacity. These in-line mixers are lubricated by a double
mechanical seal system which includes a
pressure vessel with sight glass, internal
cooling coil and piping. Tri-clamp connections on the liquid inlet, powder inlet
and mixture outlet allow for easy disassembly and cleaning.
Standard wetted parts are stainless
steel 316; for special and heavy-duty
applications, the rotor/stator can be bo-ronized for improved wear performance.
Installed on a portable cart, the inline
SLIM Mixer can serve virtually any size
vessel located anywhere in the plant.
Orion Launches Carbon
Black Pigment for
Automotive and Appliance
Coatings
A new experimental carbon black pig-
ment from Orion Engineered Carbons,
XPB 255, features colorimetric proper-
ties ideal for high-jet automotive coat-
ings as well as both solventborne and
waterborne polyurethane (PU) coat-
ing systems. It is also useful for alkyd/
melamine stoving enamels.
In polyurethane coatings, XPB 255
displays very high jetness and strong
bluish undertones, which can be further
maximized by using dispersion additives
and optimizing the total quantity of XPB
255 in the mill base and final lacquer. In
alkyd/melamine stoving enamels, high
colorimetric values also can be achieved
with dispersion additives.
The special particle design of XPB
255, combined with good dispersion, re-
sults in the high jetness and deep blue un-
dertone. An after-treatment on the carbon
black pigment offers a functional surface,
which imparts exceptional wetting and
dispersing properties.
The versatility of XPB 255 in water-and solventborne PU coating systems offers a major advantage to formulators,
who can use the universal carbon black
pigment in a broad range of coating systems, according to the company. For the
development of high jet coatings with
deep blue undertone, Orion recommends
testing the experimental black XPB 255
along with the well-established Colour
Black FW 171 and Colour Black FW 200.
Union Process
Manufactures First Attritor
with Telescoping Head
Union Process, Inc., known globally as
a manufacturer of particle size reduction and dispersing equipment as well
as related services for a broad range of
research and industrial applications, has
produced its first ever Attritor with a
telescoping head.
Union Process custom-designed the
special telescoping head to facilitate
maintenance and access to the grinding tank. By raising the head assembly,
the customer is able to easily change out
grinding tanks. The cantilever designed
telescoping head was the first ever built
by Union Process.
Emery Li, sales manager at Union
Process, commented, “This is another
example of how Union Process works
with our customers to build the exact
mill that they will need for their par-
ticular application. Even though we
had never built a telescoping head be-
fore, our engineering team welcomed
the challenge.”
The SL- 30 batch production Attritor
will be used in an R&D application to
grind materials in liquid nitrogen. As
such, the mill includes a vented cover for
cryogenic grinding with liquid nitrogen
and a phase separator. A liquid nitrogen
controller is used to maintain liquid ni-
trogen levels during the milling process.
The product discharge is equipped with
a cryogenic ball valve.
The mill features a 304SS grinding
tank that is jacketed for cooling.
The agitator shaft is constructed of
stainless steel. Specially configured arms
are 440C stainless steel.
Union Process is the inventor and developer of Attritor technology and manufactures wet and dry grinding mills as
well as horizontal bead mills.
Evonik Launches TEGO Twin
4200
Evonik has recently launched TEGO
Twin 4200, a wetting additive for waterborne wood, industrial coatings and inks,
which can also be used in solventborne
and UV coatings.
In addition to outstanding wetting
and anti-cratering properties, TEGO
Twin 4200 provides no foam stabilization and a robust and easier processing
during the paint manufacturing, according to the company.
Enhanced reduction of surface tension and high compatibility lead to a
high performance product, ideal for
various coating systems, while TEGO
Twin 4200’s 100 percent active matter
content allows for its use in modern
zero VOC formulations. CW
