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CN102942227B – Method for producing cobalt blue pigment by using waste lithium batteries – Google Patents
Publication number CN102942227B CN102942227B CN201210483357.0A CN201210483357A CN102942227B CN 102942227 B CN102942227 B CN 102942227B CN 201210483357 A CN201210483357 A CN 201210483357A CN 102942227 B CN102942227 B CN 102942227B Authority CN China Prior art keywords cobalt solution oxide lithium cell weight Prior art date 2012-11-23 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired – Fee Related Application number CN201210483357.0A Other languages Chinese ( zh ) Other versions CN102942227A ( en Inventor 陈忠等 Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Individual Original Assignee Individual Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) 2012-11-23 Filing date 2012-11-23 Publication date 2014-10-29 2012-11-23 Application filed by Individual filed Critical Individual 2012-11-23 Priority to CN201210483357.0A priority Critical patent/CN102942227B/en 2013-02-27 Publication of CN102942227A publication Critical patent/CN102942227A/en 2014-10-29 Application granted granted Critical 2014-10-29 Publication of CN102942227B publication Critical patent/CN102942227B/en Status Expired – Fee Related legal-status Critical Current 2032-11-23 Anticipated expiration legal-status Critical
The invention provides a method for producing a cobalt blue pigment by using waste lithium batteries and solves the problems of scarcity of cobalt resources, high cost of the cobalt blue pigment and the like. The method includes the following steps: a, preparing a cobalt sulfate solution; b, preparing cobalt carbonate; c, preparing cobalt oxide; and d, preparing the cobalt blue pigment.
Description
A kind of method of utilizing waste lithium cell to produce cobalt blue dye
Technical field
The present invention relates to a kind of production method of cobalt blue dye, particularly a kind of method of utilizing waste lithium cell to produce cobalt blue dye.
Background technology
Cobalt is a kind of important little metal oxide, be mainly used in and manufacture Wimet, beramic color, catalyzer, magneticsubstance and insulating material etc., cobalt has great importance as alloying element and chemical resource, due to the shortage of higher-grade cobalt ore, and the dramatic growth of world’s cobalt consumption in recent years, the price of cobalt is more and more higher.The nearly modern next develop rapidly along with lithium cell, cobalt also obviously increases at the consumption of battery industry, in the production process of lithium cell, can produce a large amount of anodal scrap stock and waste material, and remove positive electrode material from waste lithium cell, the cobalt contents of these waste materials is greatly between 45%-50%.If can carry out sufficient recycling to the cobalt of waste lithium cell, not only can reduce costs, and can effectively reduce the pollution of cobalt to environment, realize the recycle of resource.
Cobalt blue be mainly Leyden blue Co (AlO 2) 2, be the nontoxic mineral dye of a kind of high-performance environmentally-friendly.There is fabulous opacifying power, stronger tinting strength and dispersiveness; Excellent outdoor photostabilization, weather resisteant, high thermal resistance; Good acidproof, alkaline-resisting, resistance to all kinds of SOLVENTS and chemical corrosivity; And have without oozing property, non-migratory property, is a kind of important beramic color.Recycling, in the production of beramic color cobalt aluminate, is reduced to the production cost of cobalt aluminate, can not make again useless lithium battery material cause secondary pollution to environment.
Summary of the invention
The present invention proposes a kind of method of utilizing waste lithium cell to produce cobalt blue dye, has solved cobalt resource and has lacked rare, cobalt blue dye high in cost of production problem.
Technical scheme of the present invention is achieved in that
1, utilize waste lithium cell to produce a method for cobalt blue dye, comprise the following steps:
The preparation of a, cobalt sulfate solution: first then waste lithium cell electric discharge is peeled off to shell and obtains the electrode of lithium cell, will electrode fragmentation, obtain electrode materials after screening; Then the electrode materials after fragmentation screening is put into reaction tank, add water, H 20 2, sulphuric acid soln is heated to 80 DEG C and stirring reaction 2 hours, removes after filtration impurity and throw out in solution; In solution after filtration, add 10% NaOH solution, adjust pH value to 5-5.5, after reaction, make iron, aluminum ion in solution be precipitated out respectively, obtain cobalt sulfate solution through the throw out in filtering solution;
The preparation of b, cobaltous carbonate: add NaHCO in the cobalt sulfate solution obtaining in above-mentioned steps 3, reaction generates cobaltous carbonate precipitation;
The preparation of c, cobalt oxide: the cobaltous carbonate solid calcining and decomposing being precipitated out in above-mentioned steps is obtained to cobalt oxide, calcining temperature 600-800 DEG C;
D, prepare cobalt blue dye: get the cobalt oxide 10-12 (weight) obtaining in above-mentioned steps, add aluminum oxide 60-65 (weight), zinc oxide 2-4 (weight), barium carbonate 3-5 (weight), magnesium oxide 15-20 (weight), after being uniformly mixed, above-mentioned materials sends into kiln, through 1300 DEG C of calcinings 4 hours, obtain cobalt blue dye.
The preparation of described step c cobalt oxide, wherein calcining temperature is 700 DEG C.
Known by above description, compared with prior art, tool of the present invention has the following advantages in the present invention:
Not only solve waste lithium cell with the cobalt oxide production cobalt aluminate that recovery waste lithium cell is prepared gained and abandon the problem to environment and the wasting of resources, realize resource circulation utilization, and effectively reduce the production cost of cobalt blue, improve enterprise competitive advantage.
Embodiment
Below the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention’s part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
1, utilize waste lithium cell to produce a method for cobalt blue dye, comprise the following steps:
The preparation of a, cobalt sulfate solution: first then waste lithium cell electric discharge is peeled off to shell and obtains the electrode of lithium cell, will electrode fragmentation, obtain electrode materials after screening; Then the electrode materials after fragmentation screening is put into reaction tank, add water, H 20 2, sulphuric acid soln is heated to 80 DEG C and stirring reaction 2 hours, removes after filtration impurity and throw out in solution; In solution after filtration, add 10% NaOH solution, adjust pH value to 5-5.5, after reaction, make iron, aluminium plasma in solution be precipitated out respectively, obtain cobalt sulfate solution through the throw out in filtering solution;
Lithium cell is made up of shell and inner battery core, and shell is stainless steel, nickel-plated metal box hat or plastic casing; The inside battery core of battery is rolled structure, is mainly made up of positive pole, negative pole, barrier film, electrolytic solution.The positive electrode material of general battery, by approximately 90% cobalt acid lithium active substance, 7%～8% acetylene black conductor and 3%～4% organic bonding agent, is applied in aluminum foil current collector after evenly mixing; The negative pole of battery is spread upon on Copper Foil collector by approximately 90% negative electrode active material carbon materials etc., therefore utilizes waste lithium cell to produce before cobalt blue dye and should first carry out fragmentation and screening to electrode, removes the material that most of impurity is useless with separating other.
Can know employing H through experiment 2sO 4+ H 2o 2reduction acidleach, leaches cobalt acid lithium, 80 DEG C of extraction temperatures, and extraction time 2 hours, the leaching yield of this condition C o reaches more than 99%.
The preparation of b, cobaltous carbonate: add NaHCO in the cobalt sulfate solution obtaining in above-mentioned steps 3, reaction generates cobaltous carbonate precipitation;
The preparation of c, cobalt oxide: the cobaltous carbonate solid calcining and decomposing being precipitated out in above-mentioned steps is obtained to cobalt oxide, calcining temperature 600-800 DEG C; Wherein calcining temperature is 700 DEG C, best results, and energy-conservation.Calcining obtains cobalt oxide can reach the specification of quality of making ceramic raw material cobalt blue dye, and cobalt contents is more than 72%;
D, prepare cobalt blue dye: get the cobalt oxide 10-12 (weight) obtaining in above-mentioned steps, add aluminum oxide 60-65 (weight), zinc oxide 2-4 (weight), barium carbonate 3-5 (weight), magnesium oxide 15-20 (weight), after being uniformly mixed, above-mentioned materials sends into kiln, through 1300 DEG C of calcinings 4 hours, obtain cobalt blue dye.Pulverizing mill fragmentation in small, broken bits, fineness is controlled at 325 mesh screen residues below 0.5%, and product performance standard all can reach the application requiring of ceramics factory.
Compared to the prior art, tool of the present invention has the following advantages:
One, not only solve waste lithium cell with the cobalt oxide production cobalt aluminate that recovery waste lithium cell is prepared gained and abandon the problem to environment and the wasting of resources, realize resource circulation utilization, and effectively reduce the production cost of cobalt blue, improve enterprise competitive advantage.
Two, use H 2sO 4+ H 2o 2reductinic acid leaches cobalt acid lithium, 80 DEG C of extraction temperatures, and extraction time 2 hours, the leaching yield of this condition C o reaches more than 99%.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims ( 2 )
1. utilize waste lithium cell to produce a method for cobalt blue dye, it is characterized in that, comprise the following steps:
The preparation of a, cobalt sulfate solution: first then waste lithium cell electric discharge is peeled off to shell and obtains the electrode of lithium cell, will electrode fragmentation, obtain electrode materials after screening; Then the electrode materials after fragmentation screening is put into reaction tank, add water, H 20 2, sulphuric acid soln is heated to 80 DEG C and stirring reaction 2 hours, removes after filtration impurity and throw out in solution; In solution after filtration, add 10% NaOH solution, adjust pH value to 5-5.5, after reaction, make iron, aluminum ion in solution be precipitated out respectively, obtain cobalt sulfate solution through the throw out in filtering solution;
The preparation of b, cobaltous carbonate: add NaHCO in the cobalt sulfate solution obtaining in above-mentioned steps 3, reaction generates cobaltous carbonate precipitation;
The preparation of c, cobalt oxide: the cobaltous carbonate solid calcining and decomposing being precipitated out in above-mentioned steps is obtained to cobalt oxide, calcining temperature 600-800 DEG C;
D, prepare cobalt blue dye: get the cobalt oxide 10-12 (weight) obtaining in above-mentioned steps, add aluminum oxide 60-65 (weight), zinc oxide 2-4 (weight), barium carbonate 3-5 (weight), magnesium oxide 15-20 (weight), after being uniformly mixed, above-mentioned materials sends into kiln, through 1300 DEG C of calcinings 4 hours, obtain cobalt blue dye.
2. a kind of method of utilizing waste lithium cell to produce cobalt blue dye as claimed in claim 1, is characterized in that: the preparation of described step c cobalt oxide, wherein calcining temperature is 700 DEG C.
CN201210483357.0A 2012-11-23 2012-11-23 Method for producing cobalt blue pigment by using waste lithium batteries Expired – Fee Related CN102942227B ( en )
Cornflower Blooms
Cornflower, Centaurea cyanus, is an annual plant native to Europe with intense blue flowers. It is also known as Bachelor’s Button or Blue Bottle. As a native wildflower species, it is now endangered due to agricultural growth. However, it has been cultivated to become a rather common garden flower.
To create a dye bath, the petals are boiled with alum added to the water. The dye is then strained and is ready to color cotton or wool fabric or yarn.
Dogwood Bark and Fruit
There is nothing blue on the dogwood tree, Cornus, but you can produce blue dye using the bark of the dogwood tree and a greenish-blue dye from the red fruit that is plentiful in the autumn and winter, often turning a brilliant scarlet.
The dye is extracted by boiling large quantities of the bark or fruit with water. It must be strained before dyeing fabric.
Hyacinth Flowers
Hyacinth, as it is commonly known, or Hyacinthus, Asparagaceae, is a group of plants grown from bulbs in a range of colors including white, yellow, pink, purple, and blue. Native to the Middle East, the bulbs became a garden standard in most of the world when the bulbs were cultivated commercially in the Netherlands.
To create a blue dye, use the blue and purple blooms in large quantities boiled with water.
