System and method for determining estimated remaining mineral in a stockpile

Patent metadata

Field	Value
Publication number	US-12106247-B2
Application number	US-202217850864-A
Country	US
Kind code	B2
Filing date	Jun 27, 2022
Priority date	Jun 27, 2022
Publication date	Oct 1, 2024
Grant date	Oct 1, 2024

Abstract

The method may comprise receiving historical data (e.g., mineralogy data, irrigation data, raffinate data, heat data, lift height data, geographic data on ore placement and/or blower data); training a predictive model using the historical data to create a trained predictive model; adding future assumption data to the trained predictive model; running the forecast engine for a plurality of parameters to obtain forecast data for a mining production target; comparing the forecast data for the mining production target to the actual data for the mining production target; determining deviations between the forecast data and the actual data, based on the comparing; and changing each of the plurality of parameters from the forecast data to the actual data to determine a contribution to the deviations for each of the plurality of parameters.

First claim

We claim:

1. A method comprising:
obtaining, by one or more processors, days under leach, chemistry data and mineralogy data from a column test of a column of ore from a section of a stockpile;
adjusting, by the one or more processors, process parameters applied to the column of ore to create controlled conditions for simulating leaching in the column of ore;
increasing, by the one or more processors, accuracy of the chemistry data and the mineralogy data based on the controlled conditions;
providing, by the one or more processors, the chemistry data and the mineralogy data to a machine learning model to build a column test predictive model;
determining, by the one or more processors using the machine learning model, estimated remaining mineral in the section of the stockpile based on the column test predictive model;
refining, by the one or more processors, the machine learning model based on the estimated remaining mineral in the section of the stockpile; and
adjusting, by the one or more processors, leaching operations to continue and to optimize mining production based on the estimated remaining mineral in the section of the stockpile.

2. The method of claim 1 , wherein the chemistry data is stored in a laboratory information management system (LIMS).

3. The method of claim 1 , wherein the column test simulates leaching in a section of ore in controlled conditions.

4. The method of claim 1 , wherein the machine learning model is a multi-layer perceptron (MLP).

5. The method of claim 1 , further comprising determining, by the one or more processors using the machine learning model, the location of the estimated remaining mineral in the section of the stockpile.

6. The method of claim 1 , wherein the chemistry data and the mineralogy data include at least one of raffinate Fe, Fe2 feature, raffinate acid, raffinate additive, raffinate temperature, raffinate Cu, XCu, QLT, application rate or cure acid.

7. The method of claim 1 , wherein the machine learning model further uses at least one of agglomeration acid concentration or agglomeration additive concentration applied in the column test associated with mine for leach (MFL) processes.

8. The method of claim 1 , further comprising adjusting, by the one or more processors, agglomeration acid concentration applied in the column test associated with mine for leach (MFL) processes.

9. The method of claim 1 , further comprising adjusting, by the one or more processors, a mine plan based on the estimated remaining mineral.

10. The method of claim 1 , further comprising transmitting, by the one or more processors, the estimated remaining mineral in the section of the stockpile to an ore map.

11. The method of claim 1 , further comprising training, by the one or more processors, the column test predictive model on laboratory records of column test performance.

12. The method of claim 1 , further comprising generating, by the one or more processors, a mineral recovery prediction from the machine learning model.

13. The method of claim 12 , further comprising generating, by the one or more processors using the mineral recovery prediction, a mineral recovery curve to estimate mineral recovery from leaching over a period of time.

14. The method of claim 1 , further comprising transmitting, by the one or more processors, the estimated remaining mineral in the section of the stockpile to a mine material tracking tool.

15. The method of claim 1 , wherein the mine material tracking tool provides data to a stockpile and section mapping tool.

16. The method of claim 15 , wherein the stockpile and section mapping tool provides data to an ore map.

17. The method of claim 16 , wherein the ore map provides data to a forecast model input table.

18. The method of claim 15 , wherein the stockpile and section mapping tool provides data to a predictive model.

19. An article of manufacture including a non-transitory, tangible computer readable storage medium having instructions stored thereon that, in response to execution by one or more processors, cause the one or more processors to perform operations comprising:
obtaining, by the one or more processors, days under leach, chemistry data and mineralogy data from a column test of a column of ore from a section of a stockpile;
adjusting, by the one or more processors, process parameters applied to the column of ore to create controlled conditions for simulating leaching in the column of ore;
increasing, by the one or more processors, accuracy of the chemistry data and the mineralogy data based on the controlled conditions;
providing, by the one or more processors, the chemistry data and the mineralogy data to a machine learning model to build a column test predictive model;
determining, by the one or more processors using the machine learning model, estimated remaining mineral in the section of the stockpile based on the column test predictive model;
refining, by the one or more processors, the machine learning model based on the estimated remaining mineral in the section of the stockpile; and
adjusting, by the one or more processors, leaching operations to continue and to optimize mining production based on the estimated remaining mineral in the section of the stockpile.

20. A system comprising:
one or more processors; and
one or more tangible, non-transitory memories configured to communicate with the one or more processors,
the one or more tangible, non-transitory memories having instructions stored thereon that, in response to execution by the one or more processors, cause the one or more processors to perform operations comprising:
obtaining, by the one or more processors, days under leach, chemistry data and mineralogy data from a column test of a column of ore from a section of a stockpile;
adjusting, by the one or more processors, process parameters applied to the column of ore to create controlled conditions for simulating leaching in the column of ore;
increasing, by the one or more processors, accuracy of the chemistry data and the mineralogy data based on the controlled conditions;
providing, by the one or more processors, the chemistry data and the mineralogy data to a machine learning model to build a column test predictive model;
determining, by the one or more processors using the machine learning model, estimated remaining mineral in the section of the stockpile based on the column test predictive model;
refining, by the one or more processors, the machine learning model based on the estimated remaining mineral in the section of the stockpile; and
adjusting, by the one or more processors, leaching operations to continue and to optimize mining production based on the estimated remaining mineral in the section of the stockpile.

Assignees

• Freeport Minerals Corp

Inventors

• Klesov Oleksandr
• Gerdes Luke
• Geislinger Dana
• Tinsley Margaret Alden
• Freeman Robyn
• Sanyal Akaash
• Alam Muneeb
• Crossman Raquel
• Gaddie Travis
• Richardson Steven Chad
• Ni Tianfang
• Demieville Cory A
• Issoe Luciano Kiniti

Classifications

• C22B15/0065

  Leaching or slurrying (with organic compounds C22B3/16) · CPC title

• G06Q50/02

  Agriculture; Fishing; Forestry; Mining · CPC title

• G01N33/24

  Earth materials (G01N33/42 takes precedence) · CPC title

• G06Q10/06375 Primary

  Prediction of business process outcome or impact based on a proposed change · CPC title