CN114522552A - Preparation method of high-concentration nickel-cobalt binary solution - Google Patents
Preparation method of high-concentration nickel-cobalt binary solution Download PDFInfo
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- CN114522552A CN114522552A CN202210118205.4A CN202210118205A CN114522552A CN 114522552 A CN114522552 A CN 114522552A CN 202210118205 A CN202210118205 A CN 202210118205A CN 114522552 A CN114522552 A CN 114522552A
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Abstract
The invention relates to the technical field of preparation of nickel-cobalt binary liquid, and provides a preparation method of high-concentration nickel-cobalt binary liquid, which comprises the following steps: step 1: constructing a nickel-cobalt binary liquid preparation system which comprises a nickel solution storage tank, a cobalt solution storage tank, a pure water tank, a nickel solution preparation tank for storing 140-150 g/L of nickel solution and a nickel-cobalt binary liquid preparation tank; step 2: when a nickel solution production workshop is normal, combining a nickel solution storage tank, a cobalt solution storage tank and a pure water tank to prepare a nickel-cobalt binary solution; and step 3: when a nickel solution production workshop is abnormal, a nickel solution storage tank, a cobalt solution storage tank and a nickel solution preparation tank are combined to prepare a nickel-cobalt binary solution; and 4, step 4: and (5) when the abnormality of the nickel solution production workshop is removed, recovering the concentration of the nickel solution, and turning to the step 2. The method can ensure that the nickel-cobalt binary solution meeting the production requirements is prepared within a certain time after the abnormality of the nickel solution production workshop, ensure that the production of A nickel-cobalt hydroxide is not influenced, reserve sufficient time to solve the abnormality and improve the production efficiency.
Description
Technical Field
The invention relates to the technical field of preparation of nickel-cobalt binary liquid, in particular to a preparation method of high-concentration nickel-cobalt binary liquid.
Background
The production of the binary precursor A nickel cobalt hydroxide needs to prepare high-concentration nickel cobalt binary solution, wherein the total concentration of nickel cobalt is 126-130 g/L. The raw materials for preparing the high-concentration nickel-cobalt binary liquid are a nickel solution and a cobalt solution, and when the concentration of the cobalt solution is 100-120 g/L, the concentration of the nickel solution needs to be more than 130g/L to prepare the binary liquid with the concentration of 126-130 g/L. Under normal conditions, the concentration of the nickel solution supplied by the nickel solution workshop is 130-150 g/L, and the production requirements are met. However, when the production in a nickel solution workshop is abnormal, the concentration of the nickel solution is 120-130 g/L, and at the moment, binary solution with the concentration of 126-130 g/L cannot be prepared, so that the production reduction of the A nickel cobalt hydroxide or the production of unqualified A nickel cobalt hydroxide is caused, and the production efficiency is reduced.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the preparation method of the high-concentration nickel-cobalt binary liquid, which can ensure that the nickel-cobalt binary liquid meeting the production requirements is prepared within a certain time after the abnormality of a nickel solution production workshop, ensure that the production of the A nickel-cobalt hydroxide is not influenced by the abnormality of the nickel solution production workshop, reserve sufficient time for the nickel solution production workshop to solve the abnormality problem and improve the production efficiency.
The technical scheme of the invention is as follows:
the preparation method of the high-concentration nickel-cobalt binary liquid is characterized by comprising the following steps of;
step 1: constructing a nickel-cobalt binary liquid preparation system which comprises a nickel solution storage tank, a cobalt solution storage tank, a pure water tank, a nickel solution preparation tank and a nickel-cobalt binary liquid preparation tank; the system comprises a nickel solution storage tank, a cobalt solution storage tank, a pure water tank, a nickel solution preparation tank and a valve, wherein the nickel solution storage tank stores a first nickel solution from a nickel solution production workshop, the cobalt solution storage tank stores a cobalt solution with the concentration of 100-120 g/L, the pure water tank stores pure water, the nickel solution preparation tank stores a second nickel solution with the concentration of 140-150 g/L from the nickel solution production workshop, liquid outlets of the nickel solution storage tank, the cobalt solution storage tank, the pure water tank and the nickel solution preparation tank are communicated with a liquid inlet of a nickel-cobalt binary solution preparation tank through liquid outlet pipelines, and each liquid outlet pipeline is provided with a valve;
step 2: when a nickel solution production workshop is normal, the concentration of a first nickel solution is 130-150 g/L, the volumes of the first nickel solution, a cobalt solution and pure water which need to be added are calculated according to the concentration of the first nickel solution, the concentration of the cobalt solution, the concentration and the volume of a nickel-cobalt binary liquid which needs to be prepared, valves on liquid outlet pipelines of a nickel solution storage tank, a cobalt solution storage tank and a pure water tank are controlled to be opened, the first nickel solution, the cobalt solution and the pure water with corresponding volumes are respectively output to a nickel-cobalt binary liquid preparation tank, and the nickel-cobalt binary liquid with the concentration of 126-130 g/L is prepared in the nickel-cobalt binary liquid preparation tank;
and step 3: when a nickel solution production workshop is abnormal, the concentration of a first nickel solution is 120-130 g/L, the volumes of the first nickel solution, the cobalt solution and the second nickel solution which need to be added are calculated according to the concentration of the first nickel solution, the concentration of the cobalt solution, the concentration of the second nickel solution, the concentration and the volume of a nickel-cobalt binary solution which needs to be prepared, valves on liquid outlet pipelines of a nickel solution storage tank, a cobalt solution storage tank and a nickel solution preparation tank are controlled to be opened, valves on liquid outlet pipelines of a pure water tank are controlled to be closed, the first nickel solution, the cobalt solution and the second nickel solution with corresponding volumes are respectively output to the nickel-cobalt binary solution preparation tank, and the nickel-cobalt binary solution with the concentration of 126-130 g/L is prepared in the nickel-cobalt binary solution preparation tank;
and 4, step 4: when the abnormality of the nickel solution production workshop is removed, the concentration of the first nickel solution is recovered to 130-150 g/L, the valve on the liquid outlet pipeline of the nickel solution blending tank is controlled to be closed, and the step 2 is carried out.
Further, in the step 4, when the concentration of the first nickel solution reaches 140-150 g/L, the nickel solution is supplemented from the nickel solution production workshop to the nickel solution preparation tank.
Further, the steps 2 to 4 adopt an automatic control mode.
The invention has the beneficial effects that:
when a nickel solution production workshop is normal, namely the concentration of a first nickel solution is 130-150 g/L, a nickel-cobalt binary solution with the concentration of 126-130 g/L is prepared by combining a nickel solution storage tank, a cobalt solution storage tank and a pure water tank; when the nickel solution production workshop is abnormal, namely the concentration of the first nickel solution is 120-130 g/L, the nickel-cobalt binary solution with the concentration of 126-130 g/L is prepared by combining a nickel solution storage tank, a nickel solution preparation tank and a cobalt solution storage tank. The method can ensure that the nickel-cobalt binary solution with the concentration of 126-130 g/L meeting the production requirement is prepared within a certain time (more than 8 hours) after the nickel solution production workshop is abnormal, ensure that the production of the A nickel-cobalt hydroxide is not influenced by the abnormality of the nickel solution production workshop, reserve sufficient time for the nickel solution production workshop to solve the abnormal problem and improve the production efficiency.
Drawings
Fig. 1 is a schematic structural diagram of a nickel-cobalt binary liquid preparation system in the preparation method of the high-concentration nickel-cobalt binary liquid of the present invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings and specific embodiments.
The preparation method of the high-concentration nickel-cobalt binary solution comprises the following steps;
step 1: the nickel-cobalt binary liquid preparation system shown in the figure 1 is constructed and comprises a nickel solution storage tank, a cobalt solution storage tank, a pure water tank, a nickel solution preparation tank and a nickel-cobalt binary liquid preparation tank; the system comprises a nickel solution storage tank, a cobalt solution storage tank, a pure water tank, a nickel solution preparation tank and a valve, wherein the nickel solution storage tank stores a first nickel solution from a nickel solution production workshop, the cobalt solution storage tank stores a cobalt solution with the concentration of 100-120 g/L, the pure water tank stores pure water, the nickel solution preparation tank stores a second nickel solution with the concentration of 140-150 g/L from the nickel solution production workshop, liquid outlets of the nickel solution storage tank, the cobalt solution storage tank, the pure water tank and the nickel solution preparation tank are communicated with a liquid inlet of a nickel-cobalt binary solution preparation tank through liquid outlet pipelines, and each liquid outlet pipeline is provided with a valve;
step 2: when a nickel solution production workshop is normal, the concentration of a first nickel solution is 130-150 g/L, the volumes of the first nickel solution, a cobalt solution and pure water which need to be added are calculated according to the concentration of the first nickel solution, the concentration of the cobalt solution, the concentration and the volume of a nickel-cobalt binary liquid which needs to be prepared, valves on liquid outlet pipelines of a nickel solution storage tank, a cobalt solution storage tank and a pure water tank are controlled to be opened, the first nickel solution, the cobalt solution and the pure water with corresponding volumes are respectively output to a nickel-cobalt binary liquid preparation tank, and the nickel-cobalt binary liquid with the concentration of 126-130 g/L is prepared in the nickel-cobalt binary liquid preparation tank;
and step 3: when a nickel solution production workshop is abnormal, the concentration of a first nickel solution is 120-130 g/L, the volumes of the first nickel solution, the cobalt solution and the second nickel solution which need to be added are calculated according to the concentration of the first nickel solution, the concentration of the cobalt solution, the concentration of the second nickel solution, the concentration and the volume of a nickel-cobalt binary solution which needs to be prepared, valves on liquid outlet pipelines of a nickel solution storage tank, a cobalt solution storage tank and a nickel solution preparation tank are controlled to be opened, valves on liquid outlet pipelines of a pure water tank are controlled to be closed, the first nickel solution, the cobalt solution and the second nickel solution with corresponding volumes are respectively output to the nickel-cobalt binary solution preparation tank, and the nickel-cobalt binary solution with the concentration of 126-130 g/L is prepared in the nickel-cobalt binary solution preparation tank;
and 4, step 4: when the abnormality of the nickel solution production workshop is removed, the concentration of the first nickel solution is recovered to 130-150 g/L, the valve on the liquid outlet pipeline of the nickel solution blending tank is controlled to be closed, and the step 2 is carried out. And when the concentration of the first nickel solution reaches 140-150 g/L, replenishing the nickel solution from a nickel solution production workshop to a nickel solution preparation tank.
Example one
The nickel solution production workshop is normal, and the first nickel solution in the nickel solution storage tankThe concentration of the cobalt solution is 135g/L, the concentration of the cobalt solution in a cobalt solution storage tank is 110g/L, and 20m needs to be prepared3The A nickel cobalt binary solution with the concentration of 128g/L is obtained by calculation, and 17.535m of the first nickel solution needs to be added3Cobalt solution 1.752m30.713m pure water3The nickel-cobalt binary liquid with the concentration of 126-130 g/L is prepared by combining a nickel solution storage tank, a cobalt solution storage tank and a pure water tank.
Example two
The nickel solution production workshop is abnormal, the concentration of the first nickel solution in the nickel solution storage tank is 125g/L, the concentration of the cobalt solution in the cobalt solution storage tank is 110g/L, the concentration of the second nickel solution in the nickel solution preparation tank is 145g/L, and 20m of nickel solution needs to be prepared3The A nickel cobalt binary solution with the concentration of 128g/L is obtained by calculation, and 13.934m of the first nickel solution needs to be added3Cobalt solution 1.752m34.314m of second nickel solution3The nickel-cobalt binary solution with the concentration of 126-130 g/L is prepared by combining a nickel solution storage tank, a cobalt solution storage tank and a nickel solution preparation tank. The preparation result shows that the dosage of the 125g/L nickel solution is 3.23 times of that of the 145g/L nickel solution, and when the concentration of the second nickel solution in the nickel solution preparation tank is 145g/L, at least 3 nickel solutions in nickel solution storage tanks with the concentration of 125g/L and the same size can be prepared to prepare 126-130 g/L nickel-cobalt binary solution.
In the above embodiment of the present invention, the steps 2 to 4 all adopt an automatic control manner.
When a nickel solution production workshop is normal, namely the concentration of a first nickel solution is 130-150 g/L, a nickel-cobalt binary solution with the concentration of 126-130 g/L is prepared by combining a nickel solution storage tank, a cobalt solution storage tank and a pure water tank; when the nickel solution production workshop is abnormal, namely the concentration of the first nickel solution is 120-130 g/L, the nickel-cobalt binary solution with the concentration of 126-130 g/L is prepared by combining a nickel solution storage tank, a nickel solution adjusting tank and a cobalt solution storage tank. The method can ensure that the nickel-cobalt binary solution with the concentration of 126-130 g/L meeting the production requirement is prepared within a certain time (more than 8 hours) after the nickel solution production workshop is abnormal, ensure that the production of the A nickel-cobalt hydroxide is not influenced by the abnormality of the nickel solution production workshop, reserve sufficient time for the nickel solution production workshop to solve the abnormal problem and improve the production efficiency.
It is to be understood that the above-described embodiments are only a few embodiments of the present invention, and not all embodiments. The above examples are only for explaining the present invention and do not constitute a limitation to the scope of protection of the present invention. All other embodiments, which can be derived by those skilled in the art from the above-described embodiments without any creative effort, namely all modifications, equivalents, improvements and the like made within the spirit and principle of the present application, fall within the protection scope of the present invention claimed.
Claims (3)
1. The preparation method of the high-concentration nickel-cobalt binary liquid is characterized by comprising the following steps of;
step 1: constructing a nickel-cobalt binary liquid preparation system which comprises a nickel solution storage tank, a cobalt solution storage tank, a pure water tank, a nickel solution preparation tank and a nickel-cobalt binary liquid preparation tank; the system comprises a nickel solution storage tank, a cobalt solution storage tank, a pure water tank, a nickel solution preparation tank and a valve, wherein the nickel solution storage tank stores a first nickel solution from a nickel solution production workshop, the cobalt solution storage tank stores a cobalt solution with the concentration of 100-120 g/L, the pure water tank stores pure water, the nickel solution preparation tank stores a second nickel solution with the concentration of 140-150 g/L from the nickel solution production workshop, liquid outlets of the nickel solution storage tank, the cobalt solution storage tank, the pure water tank and the nickel solution preparation tank are communicated with a liquid inlet of a nickel-cobalt binary solution preparation tank through liquid outlet pipelines, and each liquid outlet pipeline is provided with a valve;
step 2: when a nickel solution production workshop is normal, the concentration of a first nickel solution is 130-150 g/L, the volumes of the first nickel solution, a cobalt solution and pure water which need to be added are calculated according to the concentration of the first nickel solution, the concentration of the cobalt solution, the concentration and the volume of a nickel-cobalt binary liquid which needs to be prepared, valves on liquid outlet pipelines of a nickel solution storage tank, a cobalt solution storage tank and a pure water tank are controlled to be opened, the first nickel solution, the cobalt solution and the pure water with corresponding volumes are respectively output to a nickel-cobalt binary liquid preparation tank, and the nickel-cobalt binary liquid with the concentration of 126-130 g/L is prepared in the nickel-cobalt binary liquid preparation tank;
and step 3: when a nickel solution production workshop is abnormal, the concentration of a first nickel solution is 120-130 g/L, the volumes of the first nickel solution, the cobalt solution and the second nickel solution which need to be added are calculated according to the concentration of the first nickel solution, the concentration of the cobalt solution, the concentration of the second nickel solution, the concentration and the volume of a nickel-cobalt binary solution which needs to be prepared, valves on liquid outlet pipelines of a nickel solution storage tank, a cobalt solution storage tank and a nickel solution preparation tank are controlled to be opened, valves on liquid outlet pipelines of a pure water tank are controlled to be closed, the first nickel solution, the cobalt solution and the second nickel solution with corresponding volumes are respectively output to the nickel-cobalt binary solution preparation tank, and the nickel-cobalt binary solution with the concentration of 126-130 g/L is prepared in the nickel-cobalt binary solution preparation tank;
and 4, step 4: when the abnormality of the nickel solution production workshop is removed, the concentration of the first nickel solution is recovered to 130-150 g/L, the valve on the liquid outlet pipeline of the nickel solution blending tank is controlled to be closed, and the step 2 is carried out.
2. The method for preparing high concentration nickel cobalt binary solution according to claim 1, wherein in the step 4, when the concentration of the first nickel solution reaches 140-150 g/L, the nickel solution is supplemented from a nickel solution production workshop to a nickel solution preparation tank.
3. The method for preparing high concentration nickel cobalt binary solution according to claim 1, wherein the steps 2 to 4 are automatically controlled.
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