CN104645543B - Processing method containing zinc, the oxidizing slag of cadmium - Google Patents
Processing method containing zinc, the oxidizing slag of cadmium Download PDFInfo
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- CN104645543B CN104645543B CN201410183797.3A CN201410183797A CN104645543B CN 104645543 B CN104645543 B CN 104645543B CN 201410183797 A CN201410183797 A CN 201410183797A CN 104645543 B CN104645543 B CN 104645543B
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- cadmium
- zinc
- oxidizing slag
- base value
- acid
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D3/00—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances
- A62D3/30—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by reacting with chemical agents
- A62D3/33—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by reacting with chemical agents by chemical fixing the harmful substance, e.g. by chelation or complexation
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D2101/00—Harmful chemical substances made harmless, or less harmful, by effecting chemical change
- A62D2101/40—Inorganic substances
- A62D2101/43—Inorganic substances containing heavy metals, in the bonded or free state
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of processing method containing zinc, the oxidizing slag of cadmium, belong to waste processing arts.It is of the invention to use the sediment for first under basic conditions, making zinc, cadmium and sulphion fully react generation larger particles, to absorb next caused finely ground particle substance；Then again under the conditions of weak base, it is sufficiently stirred, breaks the balance of the zinc adsorbed in oxidizing slag, cadmium, its zinc, cadmium for containing fully is discharged with sulphion and continue the generation little particle sediment that reacts, and adsorbed by caused bulky grain sediment before；Finally adjust again to certain acid-base value, it is ensured that the method that remaining zinc, cadmium can fully react with sulphion, the leaching content of zinc and cadmium in oxidizing slag is reduced, so as to reduce risk and potential safety hazard to caused by environment.
Description
Technical field
The invention belongs to waste processing arts, and in particular to a kind of processing method containing zinc, the oxidizing slag of cadmium.
Background technology
In the industrial production, add sulfuric acid dissolution after raw material oxidation zinc impregnation slurry and obtain solution of zinc sulfate；And solution of zinc sulfate
While cleaner solution of zinc sulfate is obtained after oxidized deferrization and demanganization, along with the generation of oxidizing slag.Contain in the oxidizing slag
There are the harmful substances such as zinc, cadmium, the leaching too high levels of the harmful substances such as zinc, the lead of the waste residue are found by detection, belong to dangerous
Waste, if without processing directly discharge if, environmental quality will necessarily be impacted, in addition to people living space with
And health brings the harm for being difficult to reverse, there is very big environmental risk and potential safety hazard.It is, therefore, necessary to the oxidizing slag
Advanced treating is carried out, reduces the leaching content of the harmful substances such as zinc and lead in the waste residue, and ring is reduced or even eliminate from reaching
The purpose of border risk and potential safety hazard.
The content of the invention
The invention provides a kind of processing method containing zinc, the oxidizing slag of cadmium, this method can be reduced containing zinc, cadmium
The leaching content of the harmful substance such as zinc and cadmium in oxidizing slag, so as to reduce risk and potential safety hazard to caused by environment.
In order to solve the above-mentioned technical problem, the technical solution adopted in the present invention is：
A kind of processing method containing zinc, the oxidizing slag of cadmium, this method comprise the following steps：
A, pending oxidizing slag and solution A are added into reactor under agitation, and passes through both reactants
Addition, control the acid-base value of material in reactor be not less than pH=14, the time was no less than 10 minutes；Wherein, the substance A
For the aqueous solution of alkaline earth sulfide；
B, after step A reaction, continuation adds pending oxidizing slag and solution into reactor under agitation
A, and by the addition of both reactants, the acid-base value of material in reactor is controlled in the range of 7≤pH ＜ 9, the time
No less than 10 minutes；
C, after step B reaction, continuation adds pending oxidizing slag and solution into reactor under agitation
A, and by the addition of both reactants, control the acid-base value of liquid in reactor to reach 9≤pH≤10；
D, the slag charge after step C reaction in reactor is filtered out.
Further, the solution A refers to the mixed of one or both of both barium sulfide solution and sodium sulfide solution
Compound.
Due to being had the advantages that using above-mentioned technical proposal, the present invention：
The present invention under basic conditions, makes zinc, cadmium and sulphion fully react the sediment of generation larger particles using first,
To absorb next caused finely ground particle substance；Then again under the conditions of weak base, it is sufficiently stirred, breaks the oxygen containing zinc, cadmium
The zinc that is adsorbed in slugging, the balance of cadmium, make its zinc, cadmium for containing fully discharge continue to react with sulphion produce it is small
Particle sediment, and adsorbed by caused bulky grain sediment before；Finally adjust again to certain acid-base value, it is ensured that surplus
The method that remaining zinc, cadmium can fully react with sulphion, reduce containing zinc, cadmium oxidizing slag in the leaching content of zinc and cadmium, from
And reduce risk and potential safety hazard to caused by environment.
Embodiment
Embodiment 1
A kind of processing method containing zinc, the oxidizing slag of cadmium, this method comprise the following steps：
A, pending oxidizing slag and barium sulfide solution are added into reactor under agitation, is detected with pH test paper anti-
Answer the acid-base value of material in device, in this way pH test paper detection show the material acid-base value do not reach pH=14, then by adjust this two
The addition of kind reactant, its acid-base value is set to be not less than pH=14, the time is 10 minutes；
B, after step A reaction, continuation adds pending oxidizing slag and vulcanization into reactor under agitation
Barium solution, the acid-base value of material in reactor is detected with pH test paper, in this way the detection of pH test paper show the acid-base value of the material 7≤
In the range of pH ＜ 9, then by adjusting the addition of both reactants, make its acid-base value in the range of 7≤pH ＜ 9, when
Between be 10 minutes；
C, after step B reaction, continuation adds pending oxidizing slag and vulcanization into reactor under agitation
Barium solution, the acid-base value of material in reactor is detected with pH test paper, pH test paper detection in this way shows that the acid-base value of the material is not
PH=10, then by adjusting the addition of both reactants, it is pH=10 to make its acid-base value；
D, the slag charge after step C reaction in reactor is filtered out.
According to《Hazardous waste judging standard, leaching characteristic identification》（GB5080.3—2007）With《Hazardous waste differentiates mark
Standard, corrosivity differentiate》（GB5085.1—2007）Discrimination method, to the oxidizing slag before processing containing zinc, cadmium in the present embodiment
Toxicity discriminating is carried out respectively afterwards and corrosivity differentiates that it the results are shown in Table 1.
The solid waste leaching test result of table 1
（Unit：Wherein, copper, lead, zinc, the unit of cadmium are mg/L；PH value is dimensionless；The unit of arsenic is μ g/L）
As can be seen from the above table, by the processing of the present embodiment, can not only reduce containing zinc, cadmium oxidizing slag in zinc
With the leaching content of cadmium, the leaching content of copper, lead, arsenic can be also reduced, reduces risk and safety to caused by environment as far as possible
Hidden danger.
Embodiment 2
A kind of processing method containing zinc, the oxidizing slag of cadmium, this method comprise the following steps：
A, pending oxidizing slag and sodium sulfide solution are added into reactor under agitation, is detected with pH test paper anti-
Answer the acid-base value of material in device, in this way pH test paper detection show the material acid-base value do not reach pH=14, then by adjust this two
The addition of kind reactant, its acid-base value is set to be not less than pH=14, the time is 12 minutes；
B, after step A reaction, continuation adds pending oxidizing slag and vulcanization into reactor under agitation
Sodium solution, the acid-base value of material in reactor is detected with pH test paper, in this way the detection of pH test paper show the acid-base value of the material 7≤
In the range of pH ＜ 9, then by adjusting the addition of both reactants, make its acid-base value in the range of 7≤pH ＜ 9, when
Between be 16 minutes；
C, after step B reaction, continuation adds pending oxidizing slag and vulcanization into reactor under agitation
Sodium solution, the acid-base value of material in reactor is detected with pH test paper, pH test paper detection in this way shows that the acid-base value of the material is not
PH=9, then by adjusting the addition of both reactants, it is pH=9 to make its acid-base value；
D, the slag charge after step C reaction in reactor is filtered out.
According to《Hazardous waste judging standard, leaching characteristic identification》（GB5080.3—2007）With《Hazardous waste differentiates mark
Standard, corrosivity differentiate》（GB5085.1—2007）Discrimination method, to the oxidizing slag before processing containing zinc, cadmium in the present embodiment
Toxicity discriminating is carried out respectively afterwards and corrosivity differentiates that it the results are shown in Table 2.
The solid waste leaching test result of table 2
（Unit：Wherein, copper, lead, zinc, the unit of cadmium are mg/L；PH value is dimensionless；The unit of arsenic is μ g/L）
As can be seen from the above table, by the processing of the present embodiment, can not only reduce containing zinc, cadmium oxidizing slag in zinc
With the leaching content of cadmium, the leaching content of copper, lead, arsenic can be also reduced, reduces risk and safety to caused by environment as far as possible
Hidden danger.
Embodiment 3
A kind of processing method containing zinc, the oxidizing slag of cadmium, this method comprise the following steps：
A, pending oxidizing slag, barium sulfide solution and sodium sulfide solution are added into reactor under agitation, is used
The acid-base value of material in pH test paper detection reactor, in this way pH test paper detection show that the acid-base value of the material does not reach pH=14, then
By adjusting the addition of these three reactants, its acid-base value is set to be not less than pH=14, the time is 10 minutes；
B, after step A reaction, continuation adds pending oxidizing slag, barium sulphide into reactor under agitation
Solution and sodium sulfide solution, the acid-base value of material in reactor is detected with pH test paper, pH test paper detection in this way shows the material
Acid-base value, then by adjusting the addition of these three reactants, makes its acid-base value in 7≤pH ＜ 9 in the range of 7≤pH ＜ 9
In the range of, the time is 12 minutes；
C, after step B reaction, continuation adds pending oxidizing slag, barium sulphide into reactor under agitation
Solution and sodium sulfide solution, the acid-base value of material in reactor is detected with pH test paper, pH test paper detection in this way shows the material
Acid-base value is not pH=10, then by adjusting the addition of these three reactants, it is pH=10 to make its acid-base value；
D, the slag charge after step C reaction in reactor is filtered out.
According to《Hazardous waste judging standard, leaching characteristic identification》（GB5080.3—2007）With《Hazardous waste differentiates mark
Standard, corrosivity differentiate》（GB5085.1—2007）Discrimination method, to the oxidizing slag before processing containing zinc, cadmium in the present embodiment
Toxicity discriminating is carried out respectively afterwards and corrosivity differentiates that it the results are shown in Table 3.
The solid waste leaching test result of table 3
（Unit：Wherein, copper, lead, zinc, the unit of cadmium are mg/L；PH value is dimensionless；The unit of arsenic is μ g/L）
From upper table 3 as can be seen that by the processing of the present embodiment, can not only reduce containing zinc, cadmium oxidizing slag in
The leaching content of zinc and cadmium, the leaching content of copper, lead, arsenic can be also reduced, reduce risk and peace to caused by environment as far as possible
Full hidden danger.
Claims (1)
1. a kind of processing method containing zinc, the oxidizing slag of cadmium, it is characterised in that comprise the following steps：
A, pending oxidizing slag and solution A, and adding by both reactants are added into reactor under agitation
Dosage, the acid-base value of material in reactor is controlled to be not less than pH=14, the time is no less than 10 minutes；Wherein, the solution A refers to
The mixture of one or both of both barium sulfide solution and sodium sulfide solution；
B, after step A reaction, continuation adds pending oxidizing slag and solution A into reactor under agitation, and
By the addition of both reactants, controlling the acid-base value of material in reactor, the time is many in the range of 7≤pH ＜ 9
In 10 minutes；
C, after step B reaction, continuation adds pending oxidizing slag and solution A into reactor under agitation, and
By the addition of both reactants, the acid-base value of liquid in reactor is controlled to reach 9≤pH≤10；
D, the slag charge after step C reaction in reactor is filtered out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410183797.3A CN104645543B (en) | 2014-05-04 | 2014-05-04 | Processing method containing zinc, the oxidizing slag of cadmium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410183797.3A CN104645543B (en) | 2014-05-04 | 2014-05-04 | Processing method containing zinc, the oxidizing slag of cadmium |
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| CN104645543A CN104645543A (en) | 2015-05-27 |
| CN104645543B true CN104645543B (en) | 2017-11-17 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1270146A (en) * | 1999-04-08 | 2000-10-18 | 柳州市环境保护科学研究所 | Process for treating sewage containing Zn and Cd |
| CN1549794A (en) * | 2001-09-03 | 2004-11-24 | 株式会社阿库泰克 | Method of treating heavy-metal-containing wastewater with sulfidizing agent and treatment apparatus |
| US6955638B1 (en) * | 2001-04-09 | 2005-10-18 | Atkins Don C | Process for disposing of solvent-containing liquids |
| CN101451198A (en) * | 2007-11-29 | 2009-06-10 | 黄石理工学院 | Method for recovering zinc and lead from waste electrolysis anode sludge |
| CN102994764A (en) * | 2012-11-30 | 2013-03-27 | 河南豫光金铅股份有限公司 | Process for recovering lead, zinc and cadmium in soot on recovery section in process of treating waste acid generated in lead smelting |
| CN103467154A (en) * | 2013-08-14 | 2013-12-25 | 中国人民解放军济南军区72465部队 | Safety disposal and resource utilization method of lead-containing energetic material |
-
2014
- 2014-05-04 CN CN201410183797.3A patent/CN104645543B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1270146A (en) * | 1999-04-08 | 2000-10-18 | 柳州市环境保护科学研究所 | Process for treating sewage containing Zn and Cd |
| US6955638B1 (en) * | 2001-04-09 | 2005-10-18 | Atkins Don C | Process for disposing of solvent-containing liquids |
| CN1549794A (en) * | 2001-09-03 | 2004-11-24 | 株式会社阿库泰克 | Method of treating heavy-metal-containing wastewater with sulfidizing agent and treatment apparatus |
| CN101451198A (en) * | 2007-11-29 | 2009-06-10 | 黄石理工学院 | Method for recovering zinc and lead from waste electrolysis anode sludge |
| CN102994764A (en) * | 2012-11-30 | 2013-03-27 | 河南豫光金铅股份有限公司 | Process for recovering lead, zinc and cadmium in soot on recovery section in process of treating waste acid generated in lead smelting |
| CN103467154A (en) * | 2013-08-14 | 2013-12-25 | 中国人民解放军济南军区72465部队 | Safety disposal and resource utilization method of lead-containing energetic material |
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| CN104645543A (en) | 2015-05-27 |
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Granted publication date: 20171117 Termination date: 20180504 |