Energy-saving grinder swirler closed-loop system and control method

Abstract

The invention provides an energy-saving type closed circuit system and a control method for a mill swirler. The energy-saving type closed circuit system comprises a feeder, a conveyor, an ore miller and the swirler. The invention is characterized in that: a weighing type pulp multi-parameter online detection integration device is arranged on the overflow and desilting pipeline of the swirler. The energy-saving type closed circuit system and the control method for the mill swirler provide a better solution for the problem of the online detection of key parameters such as flow rate, density, grain size, grade, etc. with high detection accuracy and good reliability. The energy-saving type closed circuit system and the control method for the mill swirler can further make use of the detected accurate parameters to determine data such as the feeding amount of the miller, the circulating load of the miller, the grinding concentration of the miller, the pulp density in a pump bath, the sand return ratio, etc., thereby completely reaching the aims of maximally improving the processing capacity of a miller table, saving energy and reducing consumption with the precondition of ensuring the qualified overflow grain size (pulp product) of the swirler through the data matched with the control device and the operation module in the prior art.

Description

technical field [0001] The invention relates to a mineral processing system and method, in particular to an energy-saving mill cyclone closed-circuit system and a control method, belonging to the technical field of mineral processing technology and equipment. Background technique [0002] The crushing and grinding of various ores is a process of high energy consumption. According to related reports, 3% of the country's total power generation is consumed in the crushing and grinding of various metal and non-metallic minerals. Enterprises related to ore crushing and grinding should be the first to become the key targets of my country's energy saving and consumption reduction standards. Grinding and classification operations are the most expensive operations in the entire crushing and grinding process, and their costs account for 50-70% of the entire crushing and grinding process. At the same time, in the grinding and grading operations, due to many random interference factors,...

AI Technical Summary

Problems solved by technology

However, my country's grinding automation is still at a very low level, especially in the closed circuit system of the mill cyclone, the mill feed rate, mill load, pulp flow, pulp concentration, pulp particle size, metal grade, etc. On-line detection fails to adopt effective methods, with low detection accuracy and poor reliability, and cannot meet the requirements of optimal control. So far, the limited mineral resources that have been mined through untold efforts have been in vain due to the low level of grinding and processing control. Wasted, tens of thousands of mills with a power consumption of hundreds of kilowatts are wasting huge energy in the constant roar, which is absolutely unacceptable in today's energy shortage. Therefore, To change the status quo of high energy and low output in my country's mineral processing industry, the fundamental way out lies in the realization of optimized automatic control

[0003] The main factors restricting the automation process of my country's mineral processing industry are: 1. Several key process parameters in mineral processing, such as mill load, pulp flow, concentration, particle size and online detection of metal grade, have not been fundamentally resolved. So far, there is no one Practical and reliable online detection technology; 2. There is no advanced optimal control method and optimal control device for some key processes and equipment, especially for the closed-circuit control of the mill cyclone, and there is no optimal control means

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