Recoverable Product
This function calculates the volume of recoverable product for each ORE block as well as the volume of material to volume of recoverable product ratios for each ORE layer. These ratios give an indication of whether an ORE layer contains sufficient product to `carry' overlying material.
To run this function: Choose Block model > Column processing > Recoverable product, or...
Fields on the BLOCK MODEL RECOVERABLE PRODUCT RATIOS form.
Grade attribute
Select the attribute that contains the product grade for each block and the multiplication factor necessary to convert the grade to ratio. For example, if the grade is given is g/t (ppm), then the multiplication factor will be 0.000001.
Recovery attribute
Select the attribute that contains the recovery factor for the product and the multiplication factor necessary to convert the recovery to a ratio. For example, if the recovery is expressed as a percentage, the multiplication factor would be 0.01.
Ore attribute
Select the name of the attribute containing the ORE and WASTE flags.
Ore value
Enter the value that signifies ORE blocks. This value must conform in type to the ore attribute.
Waste Value
Enter the value that signifies WASTE blocks. This value must conform in type to the ore attribute.
Ore Density
Enter the density of ORE material.
Product Density
Enter the density of the product.
Recoverable product
Select or enter the attribute that will store the volume of recoverable product in each block.
Cumulative ratio
Select or enter the attribute that will store the cumulative ratio for ORE blocks, that is, the ratio of the total volume of all ORE and WASTE layers above and including the ORE layer in which the block is situated to the total volume of recoverable product in all ORE layers above and including the ORE layer in which the block is situated.
Individual ratio
Select or enter the attribute that will store the individual ratio for ORE blocks, that is, the ratio of the volume of the ORE layer in which the block is situated plus the volume of the overlying WASTE layer to the volume of recoverable product in the ORE layer in which the block is situated.
Direction of columns
Select the direction which will define the orientation of columns in the model. This may be X, Y, Z -X, -Y or -Z. The directions which may be used include:
- -X, The columns are horizontal and aligned with the X axis of the block model and are processed in order of maximum X to minimum X value.
- X, The columns are horizontal and aligned with the X axis of the block model and are processed in order of minimum X to maximum X value.
- -Y, The columns are horizontal and aligned with the block model Y axis and are processed in order of maximum Y to minimum Y value.
- Y, The columns are horizontal and aligned with the block model Y axis and are processed in order of minimum Y to maximum Y value.
- -Z, The columns are vertical and are processed in order of maximum Z to minimum Z value.
- Z, The columns are vertical and are processed in order of minimum Z to maximum Z value.
Constrain discrimination?
Select `Yes' if you wish to constrain the blocks for which to calculate the ratios.
Notefile name
Enter a name of a text file ('.not' suffix) that will be created to hold information pertaining to this run.
Choose Apply to perform the calculation of recoverable product ratios.
The selected ORE blocks have their recoverable product volumes and ratios calculated and stored in the model.