CN216894365U - Automatic concentrated dissolved oxygen injection system for in-situ leaching uranium mining - Google Patents
Automatic concentrated dissolved oxygen injection system for in-situ leaching uranium mining Download PDFInfo
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- CN216894365U CN216894365U CN202220546791.8U CN202220546791U CN216894365U CN 216894365 U CN216894365 U CN 216894365U CN 202220546791 U CN202220546791 U CN 202220546791U CN 216894365 U CN216894365 U CN 216894365U
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Abstract
The invention relates to an automatic centralized dissolved oxygen injection system for in-situ leaching uranium mining, which comprises a liquid oxygen tank, a gasifier, an online high-pressure dissolved oxygen analyzer, a filter element filter, a high-pressure dissolved air pump and a PLC (programmable logic controller) control monitoring device, wherein the high-pressure dissolved air pump is connected with an air pipe, an injection water supply pipe and an oxygen-enriched injection main pipe. The liquid water of drawing after handling filters through the filter core, through annotating the liquid feed pump to annotating the liquid feed pipe, liquid oxygen evaporates through the vaporizer from liquid oxygen jar simultaneously, through automatic oxygen flow control valve to trachea, and the liquid water of drawing after the processing and oxygen misce bene in high-pressure dissolved air pump, the oxygen-enriched liquid after the misce bene is annotated female pipe and is led to the multichannel and annotate liquid branch pipe and reach each notes liquid well through the oxygen enrichment. The method can ensure that gas and liquid are mixed more uniformly, increase the dissolved oxygen content of liquid, reduce the investment of raw materials by a concentrated dissolved oxygen injection method, automatically regulate and control the dissolved oxygen content of the liquid, reduce the consumption of oxygen, effectively reduce the gas blockage frequency, save the operation and maintenance cost and improve the oxidation leaching rate of uranium.
Description
Technical Field
The invention relates to the field of in-situ leaching uranium injection, in particular to an automatic centralized dissolved oxygen injection system for in-situ leaching uranium extraction.
Background
Internationally, the in-situ leaching uranium mining technology has become an important method for uranium mining and metallurgy, wherein the CO2+ O2 leaching process has been formally and industrially applied in a plurality of production areas after years of experimental research in China, and has the advantages of low production cost and small damage to the ecological environment of the earth surface, but the problems of large oxygen consumption, uneven gas-liquid mixing, low oxygen utilization rate, easy air blockage of a liquid injection well, high operation and maintenance cost, low uranium oxidation leaching rate and the like exist in the CO2+ O2 dissolved oxygen liquid injection process, and the stable operation of the production process cannot be realized.
In the dissolved oxygen liquid injection process of leaching uranium at present CO2+ O2, how to improve the gas-liquid mixing uniformity on site, practice thrift the oxygen use amount, reduce notes liquid well gas shutoff frequency, practice thrift the fortune dimension cost, improve the oxidation leaching rate of uranium for the production technology of uranium moves steadily, has very important realistic meaning.
Therefore, an important direction of technical innovation in the field of in-situ leaching uranium mining is to develop an automatic concentrated dissolved oxygen injection system capable of improving gas-liquid mixing uniformity, increasing oxygen utilization rate, reducing gas plugging frequency of an injection well, saving operation and maintenance cost and improving oxidation leaching rate of uranium.
Disclosure of Invention
The invention aims to provide an automatic concentrated dissolved oxygen injection system for in-situ leaching uranium extraction, which can improve the gas-liquid mixing uniformity, increase the oxygen utilization rate, reduce the gas plugging frequency of an injection well, save the operation and maintenance cost and improve the oxidation leaching rate of uranium.
The filter core filter is connected with the high-pressure dissolved air pump through an injection water supply pipe, the liquid oxygen tank is connected with the high-pressure dissolved air pump through an air pipe, the high-pressure dissolved air pump is further connected with an oxygen-enriched injection main pipe, and the oxygen-enriched injection main pipe is connected with a plurality of injection branch pipes.
The liquid water of drawing after handling filters through the filter core, gets into high-pressure dissolved air pump through annotating the liquid feed pipe, and oxygen gets into high-pressure dissolved air pump through the trachea from the liquid oxygen jar simultaneously, and the liquid water of drawing after the processing and oxygen misce bene in high-pressure dissolved air pump, and the oxygen-enriched liquid after the misce bene is annotated female pipe and is access to the multichannel and annotate liquid branch pipe and reach each liquid well through the oxygen enrichment.
Further, still be equipped with control monitoring devices, automatic oxygen flow control valve, online high pressure dissolved oxygen analyzer, automatic oxygen flow control valve sets up between liquid oxygen jar and high pressure dissolved air pump, online high pressure dissolved oxygen analyzer sets up on the oxygen boosting between high pressure dissolved air pump and notes liquid branch pipe annotates the liquid main pipe, control monitoring devices links to each other with automatic oxygen flow control valve, online high pressure dissolved oxygen analyzer.
In order to monitor and control the dissolved oxygen amount, an automatic oxygen flow regulating valve is arranged behind the liquid oxygen tank, an online high-pressure dissolved oxygen analyzer is arranged behind the high-pressure dissolved air pump, the automatic oxygen flow regulating valve and the online high-pressure dissolved oxygen analyzer are connected with a control monitoring device, and the control monitoring device instructs the automatic oxygen flow regulating valve to regulate the oxygen flow according to information provided by the online high-pressure dissolved oxygen analyzer. The control and monitoring device can be a PLC control and monitoring device.
Furthermore, a liquid injection water supply pump and a liquid injection water supply electromagnetic flow meter are arranged between the filter element filter and the high-pressure dissolved air pump.
Further, a liquid oxygen tank valve and a gasifier are further arranged between the liquid oxygen tank and the automatic oxygen flow regulating valve, and an oxygen vortex flowmeter is further arranged between the automatic oxygen flow regulating valve and the high-pressure dissolved air pump.
Furthermore, the liquid injection branch pipe is provided with a liquid injection branch pipe electromagnetic flowmeter.
Furthermore, still be equipped with on the notes liquid branch pipe and annotate liquid branch pipe flow control valve.
Further, the determination range of the online high-pressure dissolved oxygen analyzer is 6-600 mg/L.
Compared with the prior art, the invention has the following advantages and effects:
1. the invention adopts centralized dissolved oxygen injection, can improve the utilization rate of oxygen, reduce the input of raw materials and reduce the production cost.
2. The method adopts high-pressure dissolved oxygen, so that the dissolved oxygen of the liquid can be increased under the high-pressure condition, and the oxidation leaching rate of uranium is increased; and can make the gas-liquid mixture more even through the high-efficient crushing cutting to gas, effectively reduce the stifled frequency of gas.
3. The determination range of the on-line high-pressure dissolved oxygen analyzer used in the invention is 6-600 mg/L, manual sampling measurement is replaced, and the operation and maintenance cost is reduced.
4. The PLC adopted in the invention controls the monitoring device, can realize remote quantitative regulation of the dissolved oxygen of the liquid, reduce the labor workload and reduce the operation and maintenance cost.
Drawings
FIG. 1 is a schematic diagram of the present invention.
Description of reference numerals:
1-oxygen-enriched liquid injection main pipe 2-liquid injection branch pipe electromagnetic flowmeter 3-online high-pressure dissolved oxygen analyzer 4-high-pressure dissolved air pump 5-liquid injection water feed pump 6-liquid injection water feed electromagnetic flowmeter 7-oxygen vortex flowmeter 8-gasifier 9-liquid oxygen tank valve 10-automatic oxygen flow regulating valve 11-liquid oxygen tank 12-filter element filter 13-liquid injection branch pipe 14-liquid injection water feed pipe 15-air pipe
Detailed Description
The present invention will be described in further detail below by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not to be construed as limiting the present invention.
As shown in figure 1, the invention comprises a filter element filter 12, a high-pressure dissolved air pump 4 and a liquid oxygen tank 11, wherein the filter element filter 12 is connected with the high-pressure dissolved air pump 4 through a liquid injection water supply 14, the liquid oxygen tank 11 is connected with the high-pressure dissolved air pump 4 through an air pipe 15, the outlet of the high-pressure dissolved air pump is connected with an oxygen-enriched liquid injection main pipe 1, the oxygen-enriched liquid injection main pipe is connected with a plurality of liquid injection branch pipes 13, and the liquid injection branch pipes 13 lead to each liquid injection well.
The liquid pumping water after the processing is filtered through the filter element filter 12, and is fed to the high-pressure dissolved air pump 4 through the liquid injection water feeding pipe 14, and simultaneously, the liquid oxygen is fed to the high-pressure dissolved air pump 4 through the gas pipe 15 from the liquid oxygen tank 11, the liquid pumping water and the oxygen after the processing are uniformly mixed in the high-pressure dissolved air pump 4, and the oxygen-enriched liquid after the uniform mixing is led to the multi-path liquid injection branch pipes 13 through the liquid injection main pipe 1 to reach each liquid injection well.
An injection water feed pump 5 and an injection water feed electromagnetic flowmeter 6 can be arranged between the filter element filter 12 and the high-pressure air dissolving pump 4.
A liquid oxygen tank valve 9, a gasifier 8, an automatic oxygen flow regulating valve 10 and an oxygen vortex shedding flowmeter 7 can be arranged between the liquid oxygen tank 11 and the high-pressure dissolved air pump 4.
The outlet of the high-pressure dissolved air pump 4 can be provided with an online high-pressure dissolved oxygen analyzer 3, and the online high-pressure dissolved oxygen analyzer 3 analyzes the dissolved oxygen amount of the injection water in the injection main pipe.
The on-line high-pressure dissolved oxygen analyzer 3 and the automatic oxygen flow regulating valve 10 are connected with a control monitoring device, and the control monitoring device receives the dissolved oxygen data of the on-line high-pressure dissolved oxygen analyzer 3 and then sends an instruction to the automatic oxygen flow regulating valve 10 to control the flow of oxygen according to the requirement. The control and monitoring device can be a PLC control and monitoring device.
The injection branch pipe can be provided with an electromagnetic flowmeter and a flow regulating valve.
The invention adopts high-pressure dissolved oxygen, and the measurement range of an online dissolved oxygen instrument is 6-600 mg/L.
After the uranium ore uses an automatic concentrated dissolved oxygen injection system for in-situ leaching uranium extraction, the dissolved oxygen in the in-situ leaching solution is improved by 15 percent, the gas and the liquid are uniformly mixed, and the gas plugging frequency is reduced; meanwhile, the oxidation of the liquid is increased by increasing the dissolved oxygen in the ground immersion liquid, the oxidation leaching rate of uranium is increased by 5%, the system can stably operate, and the maintenance frequency is obviously reduced.
In addition, it should be noted that the specific embodiments described in the present specification may differ in the shape of the components, the names of the components, and the like. All equivalent or simple changes of the structure, the characteristics and the principle of the invention which are described in the patent conception of the invention are included in the protection scope of the patent of the invention. Various modifications, additions and substitutions for the specific embodiments described may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (7)
1. The utility model provides an automatic concentrated dissolved oxygen annotates liquid system for ground soaks uranium mining, a serial communication port, including filter core filter, high pressure dissolved air pump, liquid oxygen jar, filter core filter is through annotating liquid water supply pipe connection high pressure dissolved air pump, liquid oxygen jar passes through the trachea and connects high pressure dissolved air pump, high pressure dissolved air pump still connects the oxygen boosting and annotates female pipe, the oxygen boosting is annotated female union coupling of liquid and is annotated a plurality of notes liquid branch pipes.
2. The automatic centralized dissolved oxygen injection system for in-situ leaching uranium mining according to claim 1, further comprising a control monitoring device, an automatic oxygen flow regulating valve, and an online high-pressure dissolved oxygen analyzer, wherein the automatic oxygen flow regulating valve is arranged between the liquid oxygen tank and the high-pressure dissolved air pump, the online high-pressure dissolved oxygen analyzer is arranged on the oxygen-enriched injection main pipe between the high-pressure dissolved air pump and the injection branch pipe, and the control monitoring device is connected with the automatic oxygen flow regulating valve and the online high-pressure dissolved oxygen analyzer.
3. The automatic centralized dissolved oxygen injection system for in-situ leaching uranium mining according to claim 2, wherein a liquid injection water feeding pump and a liquid injection water feeding electromagnetic flow meter are further arranged between the filter element filter and the high-pressure dissolved air pump.
4. The automatic centralized dissolved oxygen injection system for in-situ leaching uranium mining according to claim 3, wherein a liquid oxygen tank valve and a gasifier are further arranged between the liquid oxygen tank and the automatic oxygen flow regulating valve, and an oxygen vortex shedding flowmeter is further arranged between the automatic oxygen flow regulating valve and the high-pressure dissolved air pump.
5. The automatic centralized dissolved oxygen injection system for in-situ leaching uranium mining according to claim 4, wherein the injection branch pipe is provided with an injection branch pipe electromagnetic flowmeter.
6. The automatic centralized dissolved oxygen injection system for in-situ leaching uranium mining according to claim 5, wherein the injection branch pipe is further provided with an injection branch pipe flow regulating valve.
7. The automatic concentrated dissolved oxygen injection system for in-situ leaching uranium mining according to claim 6, wherein the measurement range of the online high-pressure dissolved oxygen analyzer is 6-600 mg/L.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220546791.8U CN216894365U (en) | 2022-03-14 | 2022-03-14 | Automatic concentrated dissolved oxygen injection system for in-situ leaching uranium mining |
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| CN202220546791.8U CN216894365U (en) | 2022-03-14 | 2022-03-14 | Automatic concentrated dissolved oxygen injection system for in-situ leaching uranium mining |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114562248A (en) * | 2022-03-14 | 2022-05-31 | 杭州英普环境技术股份有限公司 | Automatic centralized dissolved oxygen injection system for in-situ leaching uranium mining |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114562248A (en) * | 2022-03-14 | 2022-05-31 | 杭州英普环境技术股份有限公司 | Automatic centralized dissolved oxygen injection system for in-situ leaching uranium mining |
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