environmental assessment of each
equipment combination and the final
comparison of results. The basic
structure of the forms is the same for
all machine types and is divided into
two categories: capital and operating
costs (Figure 3). Finally, an overview
of capital, operating and total costs is
displayed. As purchase prices are
specific to regions or purchasing
companies, no default values are
specified. To avoid frequent repetition
of entering the prices, the user can
build up individual cost databases,
which can be loaded into a project
file.
When implementing an
alternative loading and haulage
solution, additional costs can be
generated, which are not covered by
data input for equipment. Examples
are costs for the relocation of the
primary crusher or extensive
earthworks for new haul roads or
conveyor tracks. With this in mind,
the user can enter additional
investments, which are integrated in
the cost calculation as the sum of
depreciation and interest.
Results and data
evaluation
The final table includes all chosen
equipment combinations and
displays the most important
calculation results, such as cost/t,
gCO
2
/t or operation cost/hour. By
sorting the table by any column, the
user can analyse the resulting data
and focus on the most important
criteria.
In addition to the resulting data
table, a variety of diagrams are
available for graphical analysis of the
resulting data. Different dual bar
charts, based on two calculation
parameters, can be created (Figure 4).
Furthermore, an individual analysis
of the cost structure for a selected
project variant can be performed by
pie charts, showing either only the
percentage ratio between the capital
and operating costs or a detailed
partition with subcategories for the
two types of costs. Finally, a direct
comparison of the cost structure of
two project variants is possible by
choosing a second equipment
combination that shows the
percentage difference in specific
costs (Figure 5).
All resulting data tables and
diagrams can be exported either to
spreadsheets, or into a screenshot
for presentations or documentation.
Project comparison
The primary goal of the
Mining-Calculator is the comparison
of different loading and haulage
alternatives for a given project. This
implies that, ideally, all the basic
project parameters, i.e. material
properties and production rate, are
identical for the chosen project
alternatives. The software offers a
copy function for the entire basic
project, which can be modified into
a new project alternative, for
example, by changing the haulage
system.
The calculation results of all
project alternatives can be compared
with each other to detect the overall
optimum variant. The project
comparison always includes two
project alternatives. Similar to the
evaluation of variants within a single
project, the comparison of
equipment combinations in different
project alternatives are provided in a
table and can be displayed in dual
bar charts for all selectable
calculation parameters and cost
structure pie charts.
Conclusion
The Mining-Calculator aims to
optimise mass transport in mining
and earthmoving projects.
The software includes equipment
selection and dimensioning, as well
as cost calculation and determination
of CO
2
emissions for discontinuous
and continuous haulage. Thus, in a
single step, different scenarios can be
compared and evaluated by
illustrating the results in various
diagrams and tables.
Calculation results offer a reliable
base for in-house decisions on
technical aspects, such as equipment
modifications, monetary aspects,
including specific cost/t or total
investments, and finally greenhouse
gas emissions.
RELY ON
PREISER
FOR ALL YOUR
COAL TESTING ITEMS
1.304.727.2902
Holmes 401XL Crusher
Rotary Sample Divider
Plastometer & Dilatometer
From
Sample
Preparation
And
Sample
Separation
To
Laboratory
Analysis
Preiser Scientific
An ISO 9001 Certified Company
