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Lithium mineralized composite sintered active carbon filtering core based on natural rock, and preparation method thereof

A technology for sintering activated carbon and natural rocks, which is applied in chemical instruments and methods, separation methods, filtration and separation, etc., can solve the problem of lithium mineralization being blank, and achieve the effect of avoiding adverse effects, simple process, and increasing lithium content.

Active Publication Date: 2019-08-16
武汉中地水石环保科技有限公司
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  • Claims
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Problems solved by technology

[0005] At present, the research on the remineralization of pure water in the market mainly focuses on the mineralization of water pH, TDS (Total dissolved solids, total dissolved solids), calcium, magnesium, zinc, strontium and other major and trace elements. in blank

Method used

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  • Lithium mineralized composite sintered active carbon filtering core based on natural rock, and preparation method thereof

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preparation example Construction

[0025] The preparation process of the modified serpentine is as follows: crush the natural serpentine, wash it repeatedly with tap water until there are no impurities, then perform ball milling and crush it, and pass through 200 mesh and 400 mesh sieves; boil deionized water for 20 minutes, and stir while adding starch , and then boiled to obtain a 200mg / L starch solution. NaOH was added to adjust the pH of the starch solution to 11-12 to obtain a starch floc; Mix and stir, then ultrasonically treat for 60s to disperse, after settling for 30min, suck out the supernatant, keep the solid precipitate, filter the solid precipitate with filter paper, and then dry to obtain the modified serpentine; it can be removed by flocculation Most of the heavy metal compounds such as iron and chromium mixed in serpentine.

[0026] The preparation process of modified lepidolite is as follows: crush and screen natural lepidolite, rinse repeatedly with deionized water until the water is clear and...

Embodiment 1

[0036] Weigh 65g of modified spodumene, 8g of modified serpentine, 15g of modified lepidolite, 45g of modified green zeolite, 90g of 80-325 mesh coconut shell activated carbon, and 75g of food-grade high molecular polyethylene. Put the raw material into a hydraulic mold and sinter for 40 minutes at a temperature of 200°C and a pressure of 15 MPa; cool and remove the film to obtain a large T filter element of lithium mineralized composite sintered activated carbon.

[0037] Install this big T filter element in the pure water outlet of the 800G reverse osmosis water purifier, control the flow rate of the water outlet at 1.0L / min, first flush with water for 10 minutes, and then pass the water for 1 hour after flushing, then close the inlet and outlet of the filter element and soak for 30 minutes Then open the water inlet and outlet of the filter element in turn, take 500mL water sample for routine index and lithium content test, the measured lithium content in the water sample is ...

Embodiment 2

[0040] Weigh 70g of modified spodumene, 6g of modified serpentine, 12g of modified lepidolite, 42g of modified green zeolite, 85g of coconut shell activated carbon of 80-325 mesh, and 72g of food-grade high molecular polyethylene. The raw materials were put into a hydraulic mold and sintered for 40 minutes at a temperature of 150°C and a pressure of 10 MPa; cooled and stripped to obtain a small T filter element of lithium mineralized composite sintered activated carbon.

[0041] Install this small T filter element in the pure water outlet of the 800G reverse osmosis water purifier, control the flow rate of the water outlet at 1.0L / min, first flush with water for 10 minutes, and then pass the water for 1 hour after flushing, then close the inlet and outlet of the filter element and soak for 30 minutes Then open the water inlet and outlet of the filter element in turn, take 500mL water sample for routine index and lithium content test, the lithium content in the water sample is 4...

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Abstract

The invention provides a preparation method of a lithium mineralized composite sintered active carbon filtering core based on natural rock. The preparation method comprises: respectively modifying natural spodumene, natural serpentine, natural lepidolite and natural green zeolite to obtain modified spodumene, modified serpentine, modified lepidolite and modified green zeolite; weighing the modified spodumene, the modified serpentine, the modified lepidolite, the modified green zeolite, active carbon and a binder, and uniformly mixing to obtain a solid mixture; and sintering the solid mixture to obtain an active carbon filtering core. According to the present invention, the activae carbon filtering core can stably increase the lithium element content in drinking water, supplement the dailyneeds of human body, and avoid the adverse effect of the too low lithium content in water to human body.

Description

technical field [0001] The invention relates to the field of drinking water remineralization, in particular to a natural rock-based lithium mineralization composite sintered activated carbon filter element and a preparation method thereof. Background technique [0002] Lithium is a light metal with a very small molecular weight. Lithium and its compounds have important applications in medicine. 70 years ago, some scholars discovered that lithium salt (lithium carbonate) has an antimanic effect on psychosis. Long-term administration of lithium in animals improves learning and memory, and continuous use of lithium in humans reduces the risk of dementia in patients with bipolar disorder. A number of epidemiological investigations have shown that the lithium content of drinking water is significantly negatively correlated with the incidence of mental illness, violence, and crime. According to the latest statistical analysis based on the epidemiological survey of Kessing LV in 2...

Claims

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Application Information

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IPC IPC(8): B01D39/20C02F1/68
CPCB01D39/20C02F1/001C02F1/68
Inventor 罗红雪范奇
Owner 武汉中地水石环保科技有限公司
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