Classification treatment and graded recycling method of tungsten and zinc polymetal ore processing wastewater

A technology for polymetallic ore and beneficiation wastewater, which is applied in mining wastewater treatment, water/sewage treatment, neutralization water/sewage treatment, etc. It can solve the problems of complex flotation process, high water content in flotation system, and complex wastewater composition.

Inactive Publication Date: 2020-02-07
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The flotation process of tungsten-zinc polymetallic ore is complex. During the flotation process, a large number of agents such as collectors, auxiliary agents, and dispersants must be added to form a flotation system in which liquid, solid, and gas coexist. The multi-media interface between water phase / bubble individuals and each other, these interfaces involve a series of physical and chemical reactions such as association, dissociation, activation, inhibition, and interphase partitioning, which makes the interface behavior more complex and the types of interferers more diverse , The interaction is more significant, which not only affects the flotation efficiency, but also makes the removal of interfering substances in the wastewater more difficult, seriously restricting the recycling of water
[0003] The traditional open-circuit and long-process mineral processing wastewater reuse mode has technical problems such as many mineral processing sections, wastewater from different sections are collected together, high water content in the flotation system, complex wastewater components, and high cost

Method used

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  • Classification treatment and graded recycling method of tungsten and zinc polymetal ore processing wastewater
  • Classification treatment and graded recycling method of tungsten and zinc polymetal ore processing wastewater
  • Classification treatment and graded recycling method of tungsten and zinc polymetal ore processing wastewater

Examples

Experimental program
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Effect test

Embodiment 1

[0043] 1) Raw ore roughing section: transport the waste water from the raw ore roughing section to the adjustment pool, stir and mix well and neutralize the waste water to pH=7 with sulfuric acid, and add GP type defoamer at the same time, after defoaming, enter the flocculation pool and add flocculation agent, wherein the amount of polyferric sulfate is 40g / t, and the amount of polyacrylamide is 4g / t. After stirring in the flocculation tank for 15 minutes, it is left to settle for 15 minutes; the wastewater after flocculation and precipitation is further filtered through a cyclone separator. The filtered wastewater is tested after being adsorbed by activated carbon. The test results are shown in Table 1. It fully complies with the reuse standard GB T29773-2013 and reaches the mineral processing wastewater discharge standard (GB8978-1996). It is sent back to the raw ore sorting section for reuse. It is used in the flotation production of sulfide ore, and the obtained sediment i...

Embodiment 2

[0056] 1) Raw ore roughing section: transport the waste water from the raw ore roughing section to the adjustment tank, stir and mix well and neutralize the waste water to pH=6.5 with sulfuric acid, and add GPE type defoamer at the same time, after defoaming, it enters the cyclone separator Carry out the first step of filtration, and the filtered wastewater enters the flocculation tank and adds flocculant, in which the dosage of polyferric sulfate is 120g / t, and the dosage of polyacrylamide is 12g / t. After stirring in the flocculation tank for 15 minutes, let it settle for 40 minutes ; The waste water after flocculation and precipitation is detected after activated carbon adsorption, and the test results are shown in Table 4, which fully meets the reuse standard GB T29773-2013, and reaches the mineral processing wastewater discharge standard (GB 8978-1996), and is sent back to the raw ore separation The workshop section is reused for the beneficiation of sulfide ore, and the ob...

Embodiment 3

[0067]1) Raw ore roughing section: transport the waste water from the raw ore roughing section to the adjustment tank, stir and mix well and neutralize the waste water with sulfuric acid to pH=7.5, and add GPES type defoamer at the same time, after defoaming, enter the flocculation pool and add flocculation agent, wherein the amount of polyferric sulfate is 100g / t, and the amount of polyacrylamide is 5g / t. After stirring in the flocculation tank for 15 minutes, it is left to settle for 15 minutes; the wastewater after flocculation and precipitation is further filtered through a cyclone separator. The filtered wastewater is tested after being adsorbed by activated carbon. The test results are shown in Table 7, which fully complies with the reuse standard GB T29773-2013, and reaches the mineral processing wastewater discharge standard (GB 8978-1996), and is sent back to the raw ore sorting section for reuse , used in the beneficiation of sulfide ore, and the obtained sediment is ...

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Abstract

The invention provides a classification treatment and graded recycling method of tungsten and zinc polymetal ore processing wastewater and belongs to the technical field of metal ore processing wastewater treatment. The method provided by the invention comprises the following steps: adjusting the pH value of roughing wastewater of a raw tungsten and zinc polymetal ore, mixing the roughing water with a defoaming agent and a first flocculant, performing filtering and adsorption in sequence, and recycling the processed ore; mixing wastewater of a tungsten and zinc polymetal sulfide ore, a defoaming agent and a calcium removal agent for a first time, adjusting the pH value, mixing the mixture with a second flocculant for a second time, performing filtering and adsorption in sequence, and recycling the processed ore; and adjusting the pH value of wastewater of a tungsten and zinc polymetal oxidized ore, mixing the wastewater with a defoaming agent and a third flocculant, performing filtering and adsorption in sequence, and recycling the processed ore. The method provided by the invention adopts a short-process closed-route classification treatment and graded circulation recycling process, a short-process classified graded embedding circulation technical system with linked procedures is established, the recycling rate of ore processing wastewater is increased, and the water consumption per unit can be reduced.

Description

technical field [0001] The invention relates to the technical field of metal ore beneficiation wastewater treatment, in particular to a tungsten-zinc polymetallic ore beneficiation wastewater separation treatment-classified reuse method. Background technique [0002] The flotation process of tungsten-zinc polymetallic ore is complex. During the flotation process, a large number of agents such as collectors, auxiliary agents, and dispersants must be added to form a flotation system in which liquid, solid, and gas coexist. The multi-media interface between water phase / bubble individuals and each other, these interfaces involve a series of physical and chemical reactions such as association, dissociation, activation, inhibition, and interphase partitioning, which makes the interface behavior more complex and the types of interferers more diverse , The interaction is more significant, which not only affects the flotation efficiency, but also makes the removal of interfering subs...

Claims

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Application Information

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IPC IPC(8): C02F9/04C02F103/10
CPCC02F1/001C02F1/281C02F1/52C02F1/5236C02F1/56C02F1/66C02F9/00C02F2103/10
Inventor罗旭彪丁严严熊贞晟杨利明邵鹏辉任重刘廷玺
OwnerNANCHANG HANGKONG UNIVERSITY