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A kind of resource treatment method of manganese slag solid waste and its application

A treatment method and resource recovery technology, applied in the field of resource recovery of manganese slag solid waste, can solve the problems of large floor area, debris flow disaster, waste of manganese resources, etc., achieve easy control of process flow, simple processing technology, and avoid secondary pollution effect

Active Publication Date: 2022-01-11
KUNMING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The total manganese content in the residue is generally as high as 15%. A large amount of manganese slag has not been properly treated. Under the long-term weathering and leaching, free heavy metal ions will be formed. May cause chronic poisoning, producing central nervous system symptoms
If a large amount of manganese slag is finally disposed of in a landfill, it will occupy a large area and cost high, and there is a risk of excessive leachate and large inventory, which may cause debris flow disasters in case of heavy rain, and will also cause a lot of waste of manganese resources. Therefore, seeking A way to recover and comprehensively utilize manganese slag resources, which is very important for water resources treatment

Method used

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  • A kind of resource treatment method of manganese slag solid waste and its application
  • A kind of resource treatment method of manganese slag solid waste and its application
  • A kind of resource treatment method of manganese slag solid waste and its application

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Effect test

Embodiment 1

[0038] Embodiment 1 Manganese slag solid waste resource treatment

[0039] The first step: add deionized water, and prepare the manganese slag into a 10wt% concentration slurry;

[0040] Step 2: Use a 70°C water bath to stir, the stirring speed is about 800r / min, control the slurry to form a vortex, and the stirring time is 30min;

[0041] The third step: After filtering, the filter residue is immersed in water for 12 hours with a horizontal shaker;

[0042] Step 4: Use a vacuum circulating pump to filter the impurity-removed slurry, use a pH meter and an atomic absorption instrument to detect the pH value and the content of heavy metal ions such as arsenic, chromium, and lead in the water body, and strictly control the pH ≥ 6.8, and the arsenic , chromium, lead and other heavy metal ions content ≤ 0.1mg / L; if it still exceeds the standard, perform water bath purification again, if the test is qualified, enter the next step;

[0043] Step 5: Use a constant temperature dryer ...

Embodiment 2

[0046] Embodiment 2 Manganese slag solid waste resource treatment

[0047] The first step: add deionized water, and prepare manganese slag into 20wt% concentration slurry;

[0048] Step 2: Use 80°C water bath to stir, the stirring speed is about 800r / min, control the slurry to form a vortex, and the stirring time is 30min;

[0049] The third step: After filtering, the filter residue is immersed in water for 10 hours with a horizontal shaker;

[0050] Step 4: Use a vacuum circulating pump to filter the impurity-removed slurry, use a pH meter and an atomic absorption instrument to detect the pH value and the content of heavy metal ions such as arsenic, chromium, and lead in the water body, and strictly control the pH ≥ 6.8, and the arsenic , chromium, lead and other heavy metal ions content ≤ 0.1mg / L; if it still exceeds the standard, perform water bath purification again, if the test is qualified, enter the next step;

[0051] Step 5: Use a constant temperature dryer to dry f...

Embodiment 3

[0054] Embodiment 3 Manganese slag solid waste resource treatment

[0055] The first step: add deionized water, and prepare the manganese slag into a 10wt% concentration slurry;

[0056] Step 2: Use 80°C water bath to stir, the stirring speed is about 800r / min, control the slurry to form a vortex, and the stirring time is 30min;

[0057] The third step: After filtering, the filter residue is immersed in water for 10 hours with a horizontal shaker;

[0058] Step 4: Use a vacuum circulating pump to filter the impurity-removed slurry, use a pH meter and an atomic absorption instrument to detect the pH value and the content of heavy metal ions such as arsenic, chromium, and lead in the water body, and strictly control the pH ≥ 6.8, and the arsenic , chromium, lead and other heavy metal ions content ≤ 0.1mg / L; if it still exceeds the standard, perform water bath purification again, if the test is qualified, enter the next step;

[0059] Step 5: Use a constant temperature dryer to...

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Abstract

The invention discloses a manganese slag solid waste resource treatment method and its application, belonging to the technical field of sewage treatment, comprising the following steps: adding deionized water to the manganese slag, and preparing the manganese slag into an ore slurry with a concentration of 10wt% to 30wt%; Stir in a water bath to control the slurry to form a vortex; after filtration, the filter residue is soaked in water for 8 to 12 hours; carry out suction filtration to detect the pH value and heavy metal ion content in the water body, if it still exceeds the standard, perform water bath purification again, and if the test is qualified, enter the next step. One step; drying to make the material fully free from bound water and do a constant weight test; dry crushing to ensure that the monomer dissociation degree of the material is ≥ 99%, and the particle size of the material is controlled at D 100 ≤100 mesh; the material is made into a sphere with a diameter of R=5mm~50mm. In the invention, the manganese slag is purified and pretreated, thereby enriching delta-type manganese-based alkaline substances, fully contacting and reacting with pollution factors, and catalyzing and oxidizing endocrine disruptors (EDCs) in water bodies.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a manganese slag solid waste resource treatment method and its application. Background technique [0002] Environmental endocrine disruptors (EDCs), also known as environmental hormones, refer to exogenous substances that persist in the environment and will intervene in the body to interfere with the synthesis, secretion, transportation, metabolism, and combination of the body's own normal hormones. substance. Many substances in the environment have endocrine disrupting effects, and there are many kinds of these substances with great differences. Including not only refractory persistent organic pollutants (POPs) (such as polychlorinated biphenyls, dioxins, organochlorine pesticides, etc.), but also easily degradable hormones excreted by animals and humans, birth control drugs (steroids), Plastic additives and detergent degradation products (phenols), natural plant horm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B5/00C02F1/72C02F1/58C02F101/30
CPCC04B5/00C02F1/72C02F1/58C02F2101/305
Inventor 何力为操璟璟周曼郑才庆
Owner KUNMING UNIV
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