Development of a digital model for the concentrate homogenization stockpile

Improving the efficiency of iron ore material homogenization during stockpile stacking at the sintering plant's concentrate homogenization area, based on the development and implementation of an integrated information-control system for end-to-end modeling and optimization of stack stacking and retrieval

PROJECT STRUCTURE

Implementation of positioning systems
Development and implementation of positioning systems for transfer cars, cranes, and self-propelled bins.
Modeling and forecasting
Development of an iron ore homogenization model for stockpiles, a "retrieval system" for the warehouse, and an automated data analysis and visualization system.
Online analysis of iron ore chemical composition
Real-time determination of chemical composition for iron ore materials being stacked at the homogenization stockpile.

ABOUT THE PROJECT

Input iron content control

CON-X analyzer on each loading conveyor.

Precision weighing at all stages

Weighing sensors on conveyors and under every bin — 12 points in total.

Access rights segregation

Three roles: operator, manager, administrator — with varying editing levels.

Automatic stack passport generation

The system automatically inputs data; the operator only specifies the raw material source.

Passport protection against accidental changes

Only managers can edit documents.

Average quality and weight recording per homogenization cycle

Average Fe % and total weight are recorded during operation.

Processing of incomplete feed cycles

If the feed is interrupted prematurely, the system still records the data.

Automatic flow segmentation

The system automatically creates a new entry in the passport when there is a brief absence of weight signal.

Homogenization stockpile without the system
1. No indicators can be tracked other than the averaged stack passport.

2. The passport is generated only after the stack is finished (on average once every 24 hours).
Transfer car without the system
1. No data on where and how iron ore raw material is being homogenized.
Crane without the system
1. It is unknown how cranes operate, whether they fulfill retrieval requirements according to the scheme, or if the retrieval scheme is optimal for the current stacking.
Bin without the system
1. Uneven load on the conveyor belt.

2. Uneven homogenization cycle in bins.

ONLINE CONVEYOR XRF ANALYZER CON-X

The CON-X conveyor online analyzer is used to identify and measure the concentration of elements and minerals in ore on a conveyor belt. The analyzer can analyze elements from Al (Z=13) to U (Z=92).

CON-X utilizes the X-ray fluorescence method to determine element content. A feature of the device is its ability to detect light elements (Mg, Al, Si) while minimizing interference related to the detector's protective film and air gap. The minimum content for reliable detection is from 10% for Al and higher.

CON-X Analyzer

DEVELOPMENT OF MATHEMATICAL MODELS FOR STACKED STOCKPILES AND RETRIEVAL SYSTEMS

A positioning system was implemented in the project, and the CON-X 02 analyzer was restored to functionality. Data from the positioning system and CON-X 02 allow for creating a mathematical model.

1. Stack passport generation.

2. Advisory system for optimal retrieval.

3. Visualization of the stack formation process with current state display.

4. Analysis of information regarding concentrates arriving from different sources via various raw material routes, regarding iron and lime content, lime mass (based on bin emptying level), and iron ore material sampling at the homogenization warehouse and conveyors.

Mathematical modeling interface

OPERATOR SIGNALS

Stopping and changing direction
The system detects the moment when the discharge car stops during loading or fails to reach the warehouse boundary and begins moving back. This allows monitoring the correctness of the loading cycle.
End of side loading
The moment when one side of the warehouse is fully loaded is automatically determined — the system records the completion of the operation and readiness for transition to the other side.
Side crane monitoring
The movement of cranes operating on the side of the warehouse where loading is taking place is tracked. This allows for synchronizing crane operations with material feed and avoiding conflicts.

SYSTEM INTERFACE

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Client
Location
GOP (Mining and Processing Plant)
Year
2021

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