Adaptive co-ordinated control method for copper concentrate slurry feeding roasting based on heat balance and acid dew point constraint

CN122235455APending Publication Date: 2026-06-19GREEN SHA MINING SIMPLIFIED CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GREEN SHA MINING SIMPLIFIED CO LTD
Filing Date
2026-03-17
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

In existing slurry-feed roasting processes, unstable slurry moisture content leads to insufficient self-heating capacity or excessive viscosity in the roasting system. Furthermore, the increased partial pressure of water vapor in the roasting flue gas causes severe corrosion of the electrostatic precipitator, affecting equipment lifespan and operational stability.

Method used

By introducing the thermal balance and flue gas acid dew point constraints of the roasting system, the feed water flux of the slurry is calculated and determined, and stable roasting operation is achieved through multi-parameter coordinated adjustment, including the coordinated control of thermal balance and acid dew point temperature.

Benefits of technology

It significantly reduced the number of tests, improved process adaptability and operational certainty, lowered the acid dew point temperature of flue gas, slowed down the corrosion of downstream dust removal equipment, and improved the transportation stability and energy utilization of high-concentration slurry.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention discloses an adaptive and coordinated control method for copper concentrate slurry-feed roasting based on heat balance and acid dew point constraints, belonging to the field of non-ferrous metallurgy and process control technology. In existing slurry-feed roasting processes, this method determines the upper limit of the heat balance for the slurry feed water volume by calculating the self-heating roasting heat release and the minimum roasting heat demand; further, it limits the slurry feed water volume and slurry concentration by incorporating the acid dew point temperature constraint of the roasting flue gas. When the theoretical calculation results exceed the stable operating range of the existing slurry conveying system, the slurry temperature, slurry conveying capacity, and furnace air volume of the roasting system are coordinated and adjusted to ensure that the acid dew point of the roasting flue gas meets the predetermined upper limit requirement, while simultaneously ensuring stable system operation. This invention does not require changes to the roasting process flow and has good practicality and adaptability to different operating conditions.
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