阅读说明：本技术 一种电解槽快速升温充槽的操作方法 (Operation method for quickly heating and charging electrolytic cell ) 是由 于涛 蒋刊利 李岩 赵瑞东 杨泽宇 蒋光德 王刚 王长青 李洪标 冯春宇 车振斌 于 2020-06-17 设计创作，主要内容包括：一种电解槽快速升温充槽的操作方法,属于湿法冶金技术领域,仅使用阴极液充满隔膜袋,使用阳极液对电解槽进行灌液,在满足电解镍生产工艺的前提下,不仅大大减少了充槽时间,还节约了能源消耗,降低处理电解液的成本消耗。本发明缩短了充槽时间和提升了电解效率,降低了电解镍的加工成本,革新了业内新的充槽技术,较现有技术具有更广范的应用前景,填补了现有技术的空白。(An operation method for quickly heating up and filling an electrolytic cell belongs to the technical field of hydrometallurgy, only a diaphragm bag is filled with catholyte, and the electrolytic cell is filled with anolyte, so that on the premise of meeting the electrolytic nickel production process, the time for filling the electrolytic cell is greatly reduced, the energy consumption is also saved, and the cost consumption for treating electrolyte is reduced. The invention shortens the time of cell filling, improves the electrolytic efficiency, reduces the processing cost of electrolytic nickel, improves the new cell filling technology in the industry, has wider application prospect compared with the prior art, and fills the blank of the prior art.)

1. An operation method for quickly heating and filling an electrolytic cell is characterized by comprising the following steps: comprises the following steps which are sequentially carried out,

step one, evacuating all liquid in the electrolytic cell, filling the diaphragm bag with 65-70 ℃ cathode liquid, and forming a liquid level difference of 30-50 mm with the liquid in the anode chamber of the electrolytic cell;

pumping the anolyte at the temperature of 60-65 ℃ to fill the electrolytic cell, and raising the temperature of the electrolytic cell through the temperature of the anolyte;

and step three, the temperature of the liquid in the electrolytic cell and the temperature of the cell body heated in the step two reach 50-60 ℃, and the cell filling is completed.

2. The method for operating the rapid temperature rise cell filling of the electrolytic cell as set forth in claim 1, wherein: in the second step, the flow of the anolyte can be improved to fill the electrolytic cell, and the temperature rise time of the cell body of the electrolytic cell is reduced.

3. The method for operating the rapid temperature rise cell filling of the electrolytic cell as set forth in claim 1, wherein: and after the third step of groove filling is finished, a high nickel matte anode and a nickel starting sheet are arranged in the groove, and the groove is electrified to carry out the production of the electrolytic nickel.

Technical Field

The invention belongs to the technical field of hydrometallurgy, and particularly relates to an operation method for quickly heating and charging an electrolytic cell.

Background

The process for producing electrolytic nickel by directly casting the high nickel matte into the anode plate is a process adopted by domestic main electrolytic nickel manufacturers.

The original electrolytic nickel cell filling process is that catholyte is injected into the diaphragm bag through the branch pipe, and the catholyte in the diaphragm bag continuously permeates and fills the electrolytic cell, and then is continuously filled with the electrolytic catholyte to be heated, so that the subsequent electrolytic operation can be carried out after the requirement of the production process is met. However, the whole process of filling the groove is very slow and can be completed in 4-5 days. After long-time slot filling work, the consumed electrolytic catholyte is large in quantity, the electrolytic slot needs to be cut once in a half month, and otherwise the electrolytic nickel product quality is seriously influenced. The catholyte used in the cell filling process is manufactured by consuming a large amount of auxiliary materials after the procedures of copper extraction and removal, air oxidation and neutralization iron removal, cobalt extraction and chlorine gas desulfurization and the like are closed layer by layer, and a large amount of catholyte is consumed in the cell filling process, so that the production cost of electrolytic nickel is increased.

When anode mud in an electrolytic cell is accumulated to a certain degree in the process of directly producing the electrolytic nickel by the high nickel matte electrolysis, the electrolytic cell needs to be periodically slotted for avoiding the reduction of current efficiency and ensuring the quality of electrolytic nickel products, and the slotted electrolytic cell needs to be refilled before use. The purpose of filling the electrolytic cell is to ensure that the temperature of the electrolytic cell reaches the required value of the production process.

At present, various processes for producing the nickel from the high nickel matte exist at home and abroad, and each manufacturer selects a refining process according to local conditions according to different conditions such as raw material characteristics, special technical basis, market demands of products and the like. The selection is based on investment saving, low cost, reliable technology and best economic benefit.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the operation method for quickly heating up the electrolytic cell for filling the electrolytic cell is provided, the catholyte is used for keeping the liquid level difference between the diaphragm bag and the liquid level of the anode chamber, the anolyte is used for filling the electrolytic cell, on the premise of meeting the electrolytic nickel production process, the time for filling the electrolytic cell is greatly reduced, the waste heat of the electrolytic waste liquid is fully utilized, the energy consumption is saved, the processing cost for processing the electrolyte is reduced, and considerable economic benefits are achieved.

An operation method for quickly heating and filling an electrolytic cell is characterized by comprising the following steps: comprises the following steps which are sequentially carried out,

step one, evacuating all liquid in the electrolytic cell, filling the diaphragm bag with 65-70 ℃ cathode liquid, and forming a liquid level difference of 30-50 mm with the liquid in the anode chamber of the electrolytic cell;

pumping the anolyte at the temperature of 60-65 ℃ to fill the electrolytic cell, and raising the temperature of the electrolytic cell through the temperature of the anolyte;

and step three, the temperature of the liquid in the electrolytic cell and the temperature of the cell body heated in the step two reach 50-60 ℃, and the cell filling is completed.

In the second step, the flow of the anolyte can be improved to fill the electrolytic cell, and the temperature rise time of the cell body of the electrolytic cell is reduced.

And after the third step of groove filling is finished, a high nickel matte anode and a nickel starting sheet are arranged in the groove, and the groove is electrified to carry out the production of the electrolytic nickel.

Through the design scheme, the invention can bring the following beneficial effects: the operation method for quickly heating and filling the electrolytic cell only uses catholyte to fill a diaphragm bag, and uses anolyte to fill the electrolytic cell, so that on the premise of meeting the electrolytic nickel production process, the cell filling time is greatly reduced, the waste heat in the anolyte is fully utilized, the energy consumption is saved, and the cost consumption for treating the electrolyte is reduced. Shortens the time of cell filling, improves the electrolytic efficiency, reduces the processing cost of electrolytic nickel, and innovating a new cell filling technology in the industry. Compared with the prior art, the technical scheme of the invention has wider application prospect and fills the blank of the prior art.

Detailed Description

An operation method for quickly heating and charging an electrolytic cell comprises the following steps,

step one, evacuating all liquid in the electrolytic cell, filling the diaphragm bag with 65-70 ℃ cathode liquid, and forming a liquid level difference of 30-50 mm with the liquid in the anode chamber of the electrolytic cell;

pumping the anolyte at the temperature of 60-65 ℃ to fill the electrolytic cell, and raising the temperature of the electrolytic cell through the temperature of the anolyte;

and step three, the temperature of the liquid in the electrolytic cell and the temperature of the cell body heated in the step two reach 50-60 ℃, and the cell filling is completed.

The raw material anode and the liquid adopted in the invention are high nickel matte anode production, the specification is 880 mm multiplied by 380mm, the thickness is 50 mm-55 mm, and iron ions, copper ions, cobalt ions and the like in the anode liquid are dissolved by adopting a conventional technical means and then are filled into a tank.

The traditional method for separately using the catholyte is used for filling the slot for 4-5 days, the slot filling target can be achieved by only 1 day, the slot cutting period is 1-1.5 months, the processing cost of the catholyte is 600 yuan/m 3, and the capital can be saved by 150 ten thousand yuan per year.