A high-pressure reaction kettle with a sampling and discharging device and a sampling and discharging method thereof

Abstract

The invention relates to a high-pressure reaction kettle with a sampling and discharging device and a sampling and discharging method thereof. The high-pressure reaction kettle with a sampling and discharging device includes a kettle body and a sampling and discharging device installed at the bottom of the kettle body ; The sampling and draining device includes a filter plug, a filter plug ferrule A, a filter plug ferrule B, a groove, a sampling valve, a sampling port, a liquid discharge piston, a liquid discharge piston sealing ring, a sampling sealing ring, a liquid discharge Valves, drains, seats and fixtures. The present invention adopts an integrated device of pressure stirring, filtration under pressure, sampling and liquid discharge, which can ensure that during the pressurized reaction process, under the condition of constant pressure, physical and chemical conditions, the clarified leachate can be obtained directly through the device, and the liquid can be reduced. The loss of samples, ore samples and intermediate gas products; maintain the stability and continuity of the leaching process, improve the accuracy of leaching data; avoid sampling operations such as depressurization and opening of kettles, making the sampling process save time and effort, simple and efficient.

Description

technical field [0001] The invention belongs to the field of uranium leaching by in-situ leaching, and in particular relates to a high-pressure reaction kettle with a sampling and draining device and a sampling and draining method thereof. Background technique [0002] In the indoor pressure stirring leaching experiment of in-situ leaching uranium mining, gas and liquid are generally used as leaching agents to chemically react with ore particles in a closed and pressurized reactor. Several samplings are required during the experiment period, and the sampling method is as follows: first, the autoclave is decompressed to release the gas; then the autoclave is opened, and part of the leachate is taken for filtration, and the filtrate is analyzed. There are two problems in this sampling method. On the one hand, for ore leaching in weakly acidic, neutral or alkaline environments, the leachate is not easy to clarify, and a large volume of sample needs to be taken before filtering ...

AI Technical Summary

Problems solved by technology

There are two problems in this sampling method. On the one hand, for the leaching of ores in weakly acidic, neutral or alkaline environments, the leaching solution is not easy to clarify, and a large volume of samples must be taken before filtering during sampling.

For experiments with long leaching periods and many sampling times, the volume of the reaction solution will be consumed too much, and the ore particles in the sample will also be consumed along with the sampling, which seriously affects the results of the experiment; Gas, the gas dissolved in the liquid phase will also escape, and at the same time, the gas generated by the reaction in the kettle, such as carbon dioxide, will be lost and cannot be regenerated, resulting in changes in the physical and chemical environment of the leaching process and interruption of the leaching process, which will affect the experimental data. larger

Furthermore, this sampling method is time-consuming and laborious, and the process is cumbersome

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