Mesto's OCS© software system is integrated with the online image analysis system, which includes two functional modules, grinding and flotation. Wherein the grinding portion serves to increase production of comminuted production process, cost reduction effect, such as gold ore Newmont Ahafo Ghana were installed two VisioRockTM, a coarsely pulverized product ore particle size measurement to optimize the quality of ore to the mill, a The meter measures the feed size of the semi- autogenous mill . VisioRockTM divides the feed of the semi-autogenous mill from -6mm to +225mm into 6 grades. The ratio of raw ore, hard stone and fine ore detected is used as the input parameter of the soft sensor, and the feed control of the semi-autogenous mill is carried out. , 3 heavy plate feeders as the control actuators. The system has a continuous operation time of 96% between December 2011 and May 2012, and the ratio of semi-autogenous mill and ball mill working at rated load is 95%, of which the ratio of hard stone to semi-autogenous mill is 4%, the ball mill's cycle load was 53%, gold production increased by 3.3%, production increased by 1.1%, and recovery rate increased by 2.8%. The flotation part is based on the online analysis system of image analysis technology (VisioFrothTM, LaserFrothTM), which uses an expert system to optimize the slurry level, aeration volume, and collector setting of the flotation machine, and then control the discharge valve through the DCS system. , the inflation valve opening and the speed of the collector drug pump. The measurement and control division of Mintek, South Africa, is a leader in advanced process control and optimization solutions for the mining industry. The StarCS developed by the company consists of MillStar, FloatStar and LeachStar and has been successfully applied to more than 100 mines in several countries. Better social and economic benefits. MillStar control module detects the pump pool level, cyclone inlet flow, concentration, pressure and outlet concentration, particle size, mill power consumption, using the amount of ball loading, mill discharge concentration, cyclone overflow particle size Estimate the model, optimize the process by adjusting the ore, pump pool level, cyclone switch, cycle load, power, etc. It can improve crushing capacity by 4%, grinding treatment capacity by 6%-16%, stable cyclone overflow concentration and particle size. The FloatStar optimization module consists of three optimization modules: Level Stabiliser, Flow Optimiser and Grad-Recovery Optimiser. Level Stabiliser is a multivariable optimization controller that treats multiple flotation operations as a single unit, eliminating interference between jobs. The module can track liquid level settings faster and reduce the impact of interference on the job. The role of Flow Optimisers is to quickly adjust the flotation process to a new optimal operating state as the ore properties or mineralization changes. Grad-Recovery Optimiser is based on Flow Optimiser, which directly adjusts the three operating conditions of liquid level, aeration volume and dosing to achieve the control effect of maximizing recovery under the premise of stabilizing the concentrate grade. The LeachStar Optimization Module is an optimized control software designed by Mintek for the gold cyanide leaching process, including Thicker Control, Cyanidation Control, and Adsorption Control. Control unit such as Cyanide Destruction Control, the main functions include: fault diagnosis of advanced cyanide process state; safety control of cyanide loop; and optimal control of each sub-process. Outotec's PROSCON is a process optimization control software system for the mineral processing industry that has been in existence for nearly 40 years. Over the past 40 years, Outotec has not stopped developing and perfecting this product, gradually evolving from a simple computer control system to an online optimization control system based on process research. The PROSCON system has two products, PROSCON NEXUS and PROSCON ACT, with three levels of control functions: suppression of interference to ensure stable production; control of product quality; and optimal economic benefits. The core control technology of PROSCON ACT is an expert system formed by Rule-Based Control and Fuzzy Control. Through a large number of learning experience in production processes and production reasoning knowledge, a control strategy is formed to implement control. PROSCON ACT includes the historical data storage and simulation module (TEST BENCH). The control strategy can be simulated offline and semi-online and online before use to test and verify the effectiveness of the algorithm. PROSCON NEXUS provides neural network technology for on-site data analysis and online use. One of its core technologies is self-organizing topologies. The self-organizing topology map is a tool for classifying and visualizing data in expert systems, and is a powerful classification algorithm for fault diagnosis, expert systems and pattern recognition. The products of the PROSCON software family are modular and object-oriented development technology, making software products very limited by equipment and PLC systems, thus becoming a more versatile product. 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Special optimization software for mineral processing automation
In the new century, especially in the past ten years, the world's major ore dressing automation companies are committed to the development of special optimization software for mineral processing automation and put it on the market. Although there have been no widely used cases so far, some progress has been made under certain conditions, and representative products are as follows.