Experimental device and method for simulating in-situ fluidized mining of deep metal mines

Abstract

The invention provides an experimental device and method for simulating in-situ fluidized mining of deep-earth metal mines, belonging to the technical field of deep-earth resource fluidized mining. The device includes a liquid return port, a liquid storage tank, a liquid outlet, a pumping motor, a liquid flow meter, an electronically controlled airtight valve, a sealing ring, a safety valve, a pressure gauge, a pressure relief valve, a reaction tank top cover, an electric heating control Temperature layer, fixing bolts, sealing gaskets, reaction tank, liquid injection pipeline, liquid injection hole, porous partition, liquid sink surface, liquid sink, pH sensor, redox potential sensor, ion concentration sensor, liquid collection tank, Visual terminal for data collection control, temperature sensor, oxygen concentration sensor, air pressure sensor, electronically controlled temperature changer, gas flow meter, O 2 Storage tank, CO 2 tank. The invention realizes visually adjustable temperature and air pressure of the experimental device, and measurable and controllable parameters such as pH value, oxidation-reduction potential, ion concentration, etc., and provides research device and method reference for in-situ fluidized mining of deep metal mines.

Description

technical field [0001] The invention relates to the technical field of fluidized mining of deep earth resources, in particular to an experimental device and method for simulating in-situ fluidized mining of deep earth metal mines. Background technique [0002] The current shallow mineral resources are gradually depleted. In order to alleviate the contradiction between supply and demand of resources, the development of metal mineral resources has gradually entered the deep. However, the deep mining process is faced with severe conditions of high ground temperature, high ground pressure, and high osmotic pressure. Traditional underground mining methods have problems of low mining efficiency, poor personnel safety, and high operating costs. It is urgent to explore a method suitable for the development of deep mineral resources. Research device and method. In-situ fluidized mining refers to a green mining method in which the leaching solution is injected into the deep broken or...

AI Technical Summary

Problems solved by technology

[0004] However, the existing experimental devices and research methods have the following bottlenecks: 1) There are many innovative methods, but there are few suitable experimental devices for simulating the deep leaching environment, and the existing complicated in-situ fluidization mining methods are mostly conceptual , suitable for shallow surface normal temperature and pressure environment, lack of hydraulic fracturing and leaching experiment environment simulation for deep environment; 2) coal fluidized mining is mostly but metal ore is rare, this is mainly due to the high strength of metal ore rocks, traditional Mining mostly relies on blasting operations for mining. With the continuous innovation and improvement of technologies such as hydraulic mechanized rock breaking, fluidized mining of metal ores becomes possible; 3) Existing experimental devices for fluidized mining of metal ores are usually suitable for metal ore tailings or powder Ore slurry, so the ore particle size is small, it is difficult to carry out large-scale ore leaching experimental research; 4) The existing device has a low degree of visualization, and the monitoring parameters are relatively simple, so it is difficult to analyze the temperature field, pressure field, and seepage field in the process of in-situ leaching. , solid, gas, liquid and other multi-phase media for effective monitoring and coordinated regulation

Therefore, the existing research and methods are difficult to effectively meet the needs of in-situ fluidized mining research in deep metal mines, and there are still defects in experimental devices and methods, and it is urgent to propose relevant innovative devices or methods

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