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Quick treatment recycling method of spodumene flotation tailings water

A technology for flotation tailings and spodumene, which is applied in mining wastewater treatment, multi-stage water treatment, water/sewage treatment, etc. It can solve the problems of long flocculation and adsorption time, affecting mineral separation, and large amount of adsorbent, etc. problems, to achieve the effect of fast tail water treatment, low cost and fast settlement speed

Active Publication Date: 2017-07-25
INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the method in this patent has a long time for flocculation and adsorption. The flocculation process needs to be placed for at least 1 hour, and after adding the adsorbent, it also needs to be placed for at least 1 hour, and the amount of adsorbent is large, and the adsorbent needs to be regenerated before it can be used.
On the other hand, the adsorbent used in this method is a calcium salt adsorbent, which is easy to introduce harmful calcium ions into the backwater, and if the removal is not clean, it will also affect the flotation operation; and activated carbon is used as the adsorbent. It is difficult to remove it in the backwater, and it will adsorb the reagents of the original flotation system after returning, which will affect the separation of minerals, so it is limited in the backwater treatment of spodumene ore

Method used

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  • Quick treatment recycling method of spodumene flotation tailings water
  • Quick treatment recycling method of spodumene flotation tailings water
  • Quick treatment recycling method of spodumene flotation tailings water

Examples

Experimental program
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Effect test

Embodiment 1

[0028] A method for rapid treatment and reuse of spodumene flotation tailings water is carried out according to the following steps:

[0029] (1) The tailings slurry produced by flotation is separated by a cone cyclone group to obtain sand and overflow tailings water; the cone cyclone group consists of a large-angle cone cyclone and a small-angle cone The cyclones are connected in series;

[0030] (2) Transfer the overflow tailings water obtained in step (1) to a pH adjustment tank, add sulfuric acid to it, adjust the pH value of the slurry to 8.5, and stir for 2 minutes to obtain weakly alkaline tailings water;

[0031] (3) Transfer the weakly alkaline tailings water obtained in step (2) to the rapid sedimentation tank I, and add the coagulant I ferrous sulfate heptahydrate (the dosage is 105g / m 3 Tail water), stand for 12 min after stirring, and then separate solid and liquid to obtain supernatant and sediment;

[0032] (4) Transfer the supernatant obtained in step (3) to rapid sedi...

Embodiment 2

[0034] A method for rapid treatment and reuse of spodumene flotation tailings water is carried out according to the following steps:

[0035] (1) The tailings slurry produced by flotation is separated by a cone cyclone group to obtain sand settling and overflow tailings water; the cone cyclone group consists of a large-angle cone cyclone and a small-angle cone The cyclones are connected in series;

[0036] (2) Transfer the overflow tailings water obtained in step (1) to a pH adjustment tank, add hydrochloric acid to it, adjust the pH value of the slurry to 8.0, and stir for 3 minutes to obtain weakly alkaline tailings water;

[0037] (3) Transfer the weakly alkaline tailings water obtained in step (2) to rapid sedimentation tank I, and add coagulant I ferrous sulfate heptahydrate (dosage 140g / m 3 Tail water), stand for 10 min after stirring, and then separate solid and liquid to obtain supernatant and sediment;

[0038] (4) Transfer the supernatant obtained in step (3) to the rapid se...

Embodiment 3

[0040] A method for rapid treatment and reuse of spodumene flotation tailings water is carried out according to the following steps:

[0041] (1) The tailings slurry produced by flotation is separated by a cone cyclone group to obtain sand settling and overflow tailings water; the cone cyclone group consists of a large-angle cone cyclone and a small-angle cone The cyclones are connected in series;

[0042] (2) Transfer the overflow tailings water obtained in step (1) to a pH adjustment tank, add sulfuric acid to it, adjust the pH value of the slurry to 9.0, and stir for 2 minutes to obtain weakly alkaline tailings water;

[0043] (3) Transfer the weakly alkaline tailings water obtained in step (2) to the rapid sedimentation tank I, and add the coagulant I ferrous sulfate heptahydrate (the dosage is 70g / m 3 Tail water), stand for 15 min after stirring, and then separate solid and liquid to obtain supernatant and sediment;

[0044] (4) Transfer the supernatant obtained in step (3) to th...

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Abstract

The invention discloses a quick treatment recycling method of spodumene flotation tailings water. The method comprises the following steps: (1) separating tailings pulp by use of a cone hydrocyclone group to obtain settled sand and overflowed tailings water; (2) shifting the overflowed tailings water to a pH regulating pond, adding acid to regulate the pH value to 8.0-9.0 to obtain the alkalescent tailings water; (3) shifting the alkalescent tailings water to a quick settling pond I, adding coagulant aid I, stirring and then standing for 10-15min to obtain supernatant and sediments; and (4) shifting the supernatant to a quick settling pond II, adding coagulant aid II, stirring and then standing for 10-15min to obtain the backwater and the sediments, wherein the obtained backwater is directly used for the spodumene flotation ore dressing. The tailings water recycling method disclosed by the invention can quickly and efficiently realize the recycling of the spodumene flotation tailings water, the medicament cost is low and the settling speed is fast in the recycling treatment process, an adsorbent is unnecessary to use, and the influence on the flotation by the adsorbent is well eliminated.

Description

Technical field [0001] The invention belongs to the technical field of mineral processing wastewater reuse, and specifically relates to a method for rapid treatment and reuse of spodumene flotation tailings water, and is especially suitable for mine production in areas with fragile environments and scarce water resources. Background technique [0002] The beneficiation wastewater mainly includes beneficiation process drainage, tailing pond overflow water and mine drainage. The drainage from the beneficiation process is generally transported to the tailing pond together with the tailing slurry, collectively referred to as tailing water, so the treatment of beneficiation wastewater is also called tailing water treatment. Pollutants in mineral processing wastewater mainly include suspended solids, acid-base, heavy metal ions, arsenic, fluorine, mineral processing reagents, chemical oxygen-consuming substances, and other pollutants such as oils, phenols, ammonium, and phosphines. Am...

Claims

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Application Information

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IPC IPC(8): C02F9/04C02F103/10
CPCC02F1/38C02F1/5236C02F1/66C02F1/76C02F9/00C02F2103/10C02F2301/08
Inventor 程仁举李成秀廖祥文王昌良刘星张海峰
Owner INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI