FRITSCH PULVERISETTE 2 - Manual (Page 8)

Mining/Metallurgy Ores, coal, coke, slags
Chemistry Fertilizers, dyes, pesticides, salts,
detergents, synthetic resins
Geology/Mineralogy Rocks (up to Mohs hardness 9),
calcites, quartz, silicates
Glass Sand, frits, glass, raw materials
Ceramics Porcelain, fire clay, sintered
ceramics, clay
Agriculture Ground samples, fertilizers,
leaves, plants
Food Candy, gelatin, spices, yeast,
pasta, sugar
Metallurgy Bauxite, slags, granulates
Pharmacy Dragées, drugs, pills, pastes
Rocks/Soils Plaster, lime, clinker, sand,
cement
2.2.1 Operating principle
As with a hand mortar and pestle, the grinding stock is ground in the lab-
oratory mortar mill under the influence of pressure and friction. Unlike
the hand mortar and pestle, the mortar of the laboratory mortar mill is
driven - the pestle axis is mounted on a rotating bearing and can be
shifted horizontally. The relatively large pestle ensures fast and consis-
tent grinding and crushing of sample material.
Extremely sticky or adhesive material can be ground as a suspension by
adding liquid. The liquid can be added or topped up during grinding.
The grinding probe is picked up by the rotating mortar, scraped from its
edge by a Vulkollan scraper, flipped in a plough-like motion and returned
to the pestle.
In contrast to the usually flat hand mortars, the grinding chamber of the
deep mortar bowl is closed in the laboratory mortar mill and sealed by a
rubber lip, enabling comminution with hardly any loss.
Configurable grinding duration and contact pressure of the pestle ensure
reproducible grinding conditions - while the grinding progress can be
viewed through a plexiglas window.
The extraordinary heavy-duty design of the drive, the pestle guide and all
movable parts guarantee operational readiness throughout the long
service life of the laboratory mortar mill.
Safety information and use
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