Annual report 2009 - Siempelkamp

Pouring u ladle adle during deslagging
Large mill project Esperanza
Horizontal mill under construction
Other customers use our products in mill building, for example, for their ball or
cement mills. For cement as well as coal grinding, vertical mills are used. For
this process we are casting grinding tables with diameters of up to 7 m (23 ft) and
raw cast weights ranging from approx. 8,000 kg to over 200,000 kg (8.8 to 220
US tons). Our expertise is also in demand in the area of horizontal mills. This type
of mill is a large, horizontally driven cylinder. It is used for coarse grinding of a
number of different ores (including gold, copper and iron ore). Depending on the
intended application, the mills have an external diameter of up to 14 m (46 ft). For
the smaller mills (up to around 6 m in diameter), we are manufacturing the end
faces, so-called mill heads, as a single piece. Larger mill heads are manufactured
from several cast segments.
In the scope of the ‘Esperanza’ project we equipped a 40 ft and
two 27 ft horizontal mills used for copper mining in Chile.