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Heap leaching technology has a long history, but in the past, insufficient attention has been paid to quality monitoring during heap leaching, which is considered to be an extensive operation. As heap leaching becomes an important method for gold , uranium and copper production, people gradually realize the importance of quality control during heap leaching; thus, as a guarantee for smooth production, improve the recovery rate of mineral resources, and improve the economic benefits of enterprises Important measures; strive to make the whole process of heap leaching, or the quality of its key processes, always under control. Quality control requires production operators to understand and master relevant data that can reflect the quality information in heap leaching production, so as to coordinate labor organizations in time, adjust operating parameters, prevent and eliminate major quality accidents, and make production according to predetermined requirements.
The quality control during the heap leaching process mainly includes the detection and control of the grade and moisture of the ore, the measurement of the ore, the control of the ore block, the concentration of the leaching agent, the pH value and composition of the leaching solution, especially the concentration of the main metal. Determination of the volume of the leachate and the leachate; detection of the components of the tailings and waste water that are harmful to the environment after the leaching.
Quality monitoring during heap leaching involves measurement techniques, sampling techniques, and analytical testing methods. These three are both interconnected and relatively independent. Instruments used for quality monitoring are generally versatile, such as flow meters, ground scales or electronic belt scales, pH meters, etc.; some instruments have special characteristics, such as radiation used for the determination of ore grade in uranium heap leaching. Instrumentation, heap immersion of gold and copper is not required.
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