CN109399690A - A kind of method of acidic etching waste liquid production basic copper carbonate - Google Patents
A kind of method of acidic etching waste liquid production basic copper carbonate Download PDFInfo
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- CN109399690A CN109399690A CN201811651133.XA CN201811651133A CN109399690A CN 109399690 A CN109399690 A CN 109399690A CN 201811651133 A CN201811651133 A CN 201811651133A CN 109399690 A CN109399690 A CN 109399690A
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- CN
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- Prior art keywords
- copper carbonate
- basic copper
- etching waste
- waste liquid
- acidic etching
- Prior art date
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- GEZOTWYUIKXWOA-UHFFFAOYSA-L copper;carbonate Chemical compound [Cu+2].[O-]C([O-])=O GEZOTWYUIKXWOA-UHFFFAOYSA-L 0.000 title claims abstract description 65
- 229940116318 copper carbonate Drugs 0.000 title claims abstract description 63
- 238000005530 etching Methods 0.000 title claims abstract description 57
- 239000002699 waste material Substances 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 41
- 239000007788 liquid Substances 0.000 title claims abstract description 33
- 230000002378 acidificating effect Effects 0.000 title claims abstract description 32
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 21
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000001914 filtration Methods 0.000 claims abstract description 20
- 229910001431 copper ion Inorganic materials 0.000 claims abstract description 12
- 239000012535 impurity Substances 0.000 claims abstract description 8
- 239000010949 copper Substances 0.000 claims abstract description 5
- 230000003647 oxidation Effects 0.000 claims abstract 2
- 238000007254 oxidation reaction Methods 0.000 claims abstract 2
- 238000006243 chemical reaction Methods 0.000 claims description 17
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 16
- 238000001035 drying Methods 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 235000011194 food seasoning agent Nutrition 0.000 claims description 6
- XTEGARKTQYYJKE-UHFFFAOYSA-M Chlorate Chemical group [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 claims description 4
- 239000007800 oxidant agent Substances 0.000 claims description 4
- 230000001590 oxidative effect Effects 0.000 claims description 4
- 239000003513 alkali Substances 0.000 claims description 3
- VLTRZXGMWDSKGL-UHFFFAOYSA-M perchlorate Inorganic materials [O-]Cl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-M 0.000 claims description 2
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 claims description 2
- 150000002978 peroxides Chemical class 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 2
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims 1
- 238000010009 beating Methods 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 229910052802 copper Inorganic materials 0.000 claims 1
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 238000001556 precipitation Methods 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract description 2
- 230000009466 transformation Effects 0.000 abstract description 2
- 238000002425 crystallisation Methods 0.000 abstract 1
- 230000008025 crystallization Effects 0.000 abstract 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 6
- 239000013078 crystal Substances 0.000 description 4
- PFUVRDFDKPNGAV-UHFFFAOYSA-N sodium peroxide Chemical compound [Na+].[Na+].[O-][O-] PFUVRDFDKPNGAV-UHFFFAOYSA-N 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 229910021592 Copper(II) chloride Inorganic materials 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- ORTQZVOHEJQUHG-UHFFFAOYSA-L copper(II) chloride Chemical compound Cl[Cu]Cl ORTQZVOHEJQUHG-UHFFFAOYSA-L 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G3/00—Compounds of copper
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Removal Of Specific Substances (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The invention discloses a kind of methods of acidic etching waste liquid production basic copper carbonate, the production method includes four steps: oxidation processes-filtering and impurity removing-synthetic reaction-basic copper carbonate crystallization is precipitated and dries, it can convert the univalent copper ion in the acidic etching waste liquid of electronics industry generation to after bivalent cupric ion through the above steps and be converted into basic copper carbonate precipitation under alkaline environment, through the above way, the present invention can be by etching waste liquor recycling and reusing, by Cu therein+More thorough transformation tissue culture, reduces environmental pollution and the waste of resource.
Description
Technical field
The present invention relates to resource reclaims to recycle field, produces basic copper carbonate more particularly to a kind of acidic etching waste liquid
Method.
Background technique
Etch process is essential important step during currently manufactured printed circuit board, is produced in printed circuit board
In the process, circuit board usually is produced with acid or alkaline etching process, therefore, generates a large amount of this acid or alkalinity every year
Etching solution.Wherein, acidic etching liquid has a techniques such as hydrochloric acid, hydrochloric acid+propylhomoserin sodium, hydrochloric acid+hydrogen peroxide, acidic etching liquid it is main at
It is divided into CuCl2, HC1, NH4C1 or NaCl etc., in etching process, Cu2+ and Cu effect generation Cu+, with etching reaction
It carries out, Cu+ quantity is more and more, and Cu2+ is reduced, and etching solution etch capabilities decline quickly, to keep stablizing etch capabilities, need to add
Entering oxidant or drum air makes Cu+ be converted into Cu 2+ as early as possible;Simultaneously when etch cylinder in Cu 2+ concentration reach certain numerical value when or
When the solution that person etches cylinder is more than certain volume, need timely exclusive segment etching solution to guarantee the normal operation of etching work procedure,
The discharge etching solution is referred to as etching waste liquor, if such waste liquid will cause great environmental pollution and resource without dealing carefully with
Waste.
Summary of the invention
It, can will be in etching waste liquor the invention mainly solves the technical problem of providing a kind of processing technique of etching waste liquor
Copper ion is converted into basic copper carbonate precipitation.
In order to solve the above technical problems, one technical scheme adopted by the invention is that: it is raw to provide a kind of acidic etching waste liquid
The method for producing basic copper carbonate, which is characterized in that the method for the acidic etching waste liquid production basic copper carbonate includes following step
It is rapid:
Step 1 pre-processes etching waste liquor, and oxidant is added in acidic etching waste liquid to Cu+ and is completely converted into Cu2+；
Regulator is added in pretreated etching waste liquor by step 2, and the solution of bivalent cupric ion is made after filtering and impurity removing；
Copper ion solution obtained in prepared saleratus solution and step 2 is added dropwise in stoste by step 3 simultaneously to react；
Basic copper carbonate tide product are obtained by filtration after step 4 fully reacting, the tide product basic copper carbonate is dried to obtain alkali formula
Copper carbonate.
In a preferred embodiment of the present invention, the oxidant is chlorate, perchlorate or peroxide.
In a preferred embodiment of the present invention, the preparation method of the saleratus solution is the mass ratio of sodium bicarbonate and water
Example 1:6 ~ 10.
In a preferred embodiment of the present invention, it needing to heat when the saleratus solution is prepared, solution temperature is 50 ~
70℃。
In a preferred embodiment of the present invention, the reaction environment of the step 3 is weakly alkaline environment, the environment
PH value is 8 ~ 9.
In a preferred embodiment of the present invention, the filter method is centrifugal filtration water removal.
In a preferred embodiment of the present invention, the drying means of the damp product basic copper carbonate is hot-air seasoning, institute
Stating drying temperature is 50 ~ 70 DEG C.
The beneficial effects of the present invention are: the technical scheme is that by by the Cu of acidic etching waste liquid+Through peroxidating
It is changed into Cu2+Then impurity is removed after alkali tune and reacts generation basic copper carbonate with sodium bicarbonate, this scheme can be by etching waste liquor
Recycling and reusing, by Cu therein+More thorough transformation tissue culture, reduces environmental pollution and the waste of resource.
Detailed description of the invention
Fig. 1 is the reacting flow chart of a preferred embodiment of the present invention.
Specific embodiment
Below with reference to the preferred embodiments of the present invention will be described in detail, so that advantages and features of the invention can be easier to
In being readily appreciated by one skilled in the art, so as to make a clearer definition of the protection scope of the present invention.
The present invention has following embodiment:
Embodiment 1:
A kind of method of acidic etching waste liquid production basic copper carbonate, the method for the acidic etching waste liquid production basic copper carbonate
The following steps are included:
Step 1 pre-processes etching waste liquor, and sodium peroxide is added in acidic etching waste liquid and is dispersed with stirring to solution
In Cu+It is completely converted into Cu2+；
Regulator is added in pretreated etching waste liquor by step 2, and divalent is made after the insoluble impurity in filtering removal solution
The solution of copper ion；
Step 3 by copper ion solution obtained in the saleratus solution that prepared mass ratio is 1:6 and step 2 simultaneously
It is added dropwise in stoste and reacts.
Basic copper carbonate tide product are obtained by filtration after step 4 fully reacting, the tide product basic copper carbonate is through being dried to obtain
Basic copper carbonate.
The saleratus solution needs to heat when preparing, and solution temperature is 70 DEG C, and the temperature of the solution is higher advantageous
In raising reaction efficiency.
The reaction environment of the step 3 is weakly alkaline environment, and the pH value of the reaction environment is 8, the basic copper carbonate
It could be precipitated under weakly alkaline environment.
Filter method is centrifugal filtration water removal in the step four, and the speed removed water using centrifuge is fast, high-efficient, can
Damp product basic copper carbonate is obtained with the most of moisture moisture removed in basic copper carbonate faster.
The drying means of the damp product basic copper carbonate is hot-air seasoning, and the drying temperature is 70 DEG C, the hot wind
Quickly the moisture of copper carbonate plane of crystal can be taken away.
Embodiment 2:
A kind of method of acidic etching waste liquid production basic copper carbonate, the method for the acidic etching waste liquid production basic copper carbonate
The following steps are included:
Step 1 pre-processes etching waste liquor, and sodium peroxide is added in acidic etching waste liquid and is dispersed with stirring to solution
In Cu+It is completely converted into Cu2+；
Regulator is added in pretreated etching waste liquor by step 2, and divalent is made after the insoluble impurity in filtering removal solution
The solution of copper ion；
Step 3 by copper ion solution obtained in the saleratus solution that prepared mass ratio is 1:10 and step 2 simultaneously
It is added dropwise in stoste and reacts.
Basic copper carbonate tide product are obtained by filtration after step 4 fully reacting, the tide product basic copper carbonate is through being dried to obtain
Basic copper carbonate.
The saleratus solution needs to heat when preparing, and solution temperature is 60 DEG C, and the temperature of the solution is higher advantageous
In raising reaction efficiency.
The reaction environment of the step 3 is weakly alkaline environment, and the pH value of the reaction environment is 9, the basic copper carbonate
It could be precipitated under weakly alkaline environment.
Filter method is centrifugal filtration water removal in the step four, and the speed removed water using centrifuge is fast, high-efficient, can
Damp product basic copper carbonate is obtained with the most of moisture moisture removed in basic copper carbonate faster.
The drying means of the damp product basic copper carbonate is hot-air seasoning, and the drying temperature is 60 DEG C, the hot wind
Quickly the moisture of copper carbonate plane of crystal can be taken away.
Embodiment 3:
A kind of method of acidic etching waste liquid production basic copper carbonate, the method for the acidic etching waste liquid production basic copper carbonate
The following steps are included:
Step 1 pre-processes etching waste liquor, and sodium peroxide is added in acidic etching waste liquid and is dispersed with stirring to solution
In Cu+It is completely converted into Cu2+；
Regulator is added in pretreated etching waste liquor by step 2, and divalent is made after the insoluble impurity in filtering removal solution
The solution of copper ion；
Step 3 by copper ion solution obtained in the saleratus solution that prepared mass ratio is 1:8 and step 2 simultaneously
It is added dropwise in stoste and reacts.
Basic copper carbonate tide product are obtained by filtration after step 4 fully reacting, the tide product basic copper carbonate is through being dried to obtain
Basic copper carbonate.
The saleratus solution needs to heat when preparing, and solution temperature is 80 DEG C, and the temperature of the solution is higher advantageous
In raising reaction efficiency.
The reaction environment of the step 3 is weakly alkaline environment, and the pH value of the reaction environment is 10, the basic carbonate
Copper will could be precipitated under weakly alkaline environment.
Filter method is centrifugal filtration water removal in the step four, and the speed removed water using centrifuge is fast, high-efficient, can
Damp product basic copper carbonate is obtained with the most of moisture moisture removed in basic copper carbonate faster.
The drying means of the damp product basic copper carbonate is hot-air seasoning, and the drying temperature is 70 DEG C, the hot wind
Quickly the moisture of copper carbonate plane of crystal can be taken away.
Embodiment 4:
A kind of method of acidic etching waste liquid production basic copper carbonate, the method for the acidic etching waste liquid production basic copper carbonate
The following steps are included:
Step 1 pre-processes etching waste liquor, and sodium peroxide is added in acidic etching waste liquid and is dispersed with stirring to solution
In Cu+It is completely converted into Cu2+；
Regulator is added in pretreated etching waste liquor by step 2, and divalent is made after the insoluble impurity in filtering removal solution
The solution of copper ion；
Step 3 by copper ion solution obtained in the saleratus solution that prepared mass ratio is 1:7 and step 2 simultaneously
It is added dropwise in stoste and reacts.
Basic copper carbonate tide product are obtained by filtration after step 4 fully reacting, the tide product basic copper carbonate is through being dried to obtain
Basic copper carbonate.
The saleratus solution needs to heat when preparing, and solution temperature is 50 DEG C, and the temperature of the solution is higher advantageous
In raising reaction efficiency.
The reaction environment of the step 3 is weakly alkaline environment, and the pH value of the reaction environment is 10, the basic carbonate
Copper will could be precipitated under weakly alkaline environment.
Filter method is centrifugal filtration water removal in the step four, and the speed removed water using centrifuge is fast, high-efficient, can
Damp product basic copper carbonate is obtained with the most of moisture moisture removed in basic copper carbonate faster.
The drying means of the damp product basic copper carbonate is hot-air seasoning, and the drying temperature is 80 DEG C, the hot wind
Quickly the moisture of copper carbonate plane of crystal can be taken away.
CU in above-described embodiment2+Conversion ratio test results in the following table:
| Embodiment | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 |
| Conversion ratio | 93% | 89% | 87% | 82% |
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to be said using the present invention
Equivalent structure or equivalent flow shift made by bright book content is applied directly or indirectly in other relevant technical fields,
Similarly it is included within the scope of the present invention.
Claims (7)
1. a kind of method of acidic etching waste liquid production basic copper carbonate, which is characterized in that the acidity acidic etching waste liquid is raw
Produce basic copper carbonate method the following steps are included:
Step 1 pre-processes etching waste liquor, and oxidant is added in acidic etching waste liquid to Cu+ and is completely converted into Cu2+；
Regulator is added in pretreated etching waste liquor by step 2, and the solution of bivalent cupric ion is made after filtering and impurity removing；
Copper ion solution obtained in prepared saleratus solution and step 2 is added dropwise in stoste by step 3 simultaneously to react;
Basic copper carbonate tide product are obtained by filtration after step 4 fully reacting, the tide product basic copper carbonate is dried to obtain alkali formula carbon
Sour copper.
2. the method for acidic etching waste liquid production basic copper carbonate according to claim 1, which is characterized in that the oxidation
Agent is chlorate, perchlorate or peroxide.
3. the method for acidic etching waste liquid production basic copper carbonate according to claim 1, which is characterized in that the little Su
The preparation method for beating solution is mass ratio 1:6 ~ 10 of sodium bicarbonate and water.
4. the method for acidic etching waste liquid production basic copper carbonate according to claim 1, which is characterized in that described is small
Soda solution needs to heat when preparing, and solution temperature is 50 ~ 70 DEG C.
5. the method for acidic etching waste liquid production basic copper carbonate according to claim 1, which is characterized in that the step
Three reaction environment is weakly alkaline environment, and the pH value of the environment is 8 ~ 9.
6. the method for acidic etching waste liquid production basic copper carbonate according to claim 1, which is characterized in that the mistake
Filtering method is centrifugal filtration water removal.
7. the method for acidic etching waste liquid production basic copper carbonate according to claim 1, which is characterized in that the tide
The drying means of product basic copper carbonate is hot-air seasoning, and the drying temperature is 50 ~ 70 DEG C.
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|---|---|---|---|
| CN201811651133.XA CN109399690A (en) | 2018-12-31 | 2018-12-31 | A kind of method of acidic etching waste liquid production basic copper carbonate |
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| CN201811651133.XA CN109399690A (en) | 2018-12-31 | 2018-12-31 | A kind of method of acidic etching waste liquid production basic copper carbonate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111777092A (en) * | 2020-07-06 | 2020-10-16 | 东莞秀博瑞殷电子材料有限公司 | Reaction device for recovering basic copper carbonate from acidic etching waste liquid and use method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206751418U (en) * | 2017-03-01 | 2017-12-15 | 东莞市新意工业废物处理有限公司 | A kind of basic copper carbonate production system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206751418U (en) * | 2017-03-01 | 2017-12-15 | 东莞市新意工业废物处理有限公司 | A kind of basic copper carbonate production system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111777092A (en) * | 2020-07-06 | 2020-10-16 | 东莞秀博瑞殷电子材料有限公司 | Reaction device for recovering basic copper carbonate from acidic etching waste liquid and use method thereof |
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Application publication date: 20190301 |
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