阅读说明：本技术 锌冶炼粉状净化剂净化方法 (Purifying method for zinc smelting powdery purifying agent ) 是由 颜茂昌 熊云 张新智 杨学贵 于 2021-08-23 设计创作，主要内容包括：本发明公开了锌冶炼粉状净化剂净化方法,涉及金属冶炼技术领域。本发明净化方法包括以下步骤：使用粉状净化剂对锌冶炼进行净化,首先确定粉状净化剂的用量,同时确定锌冶炼中杂质的总量；当确定锌冶炼中杂质的总量后,取用相当于锌冶炼杂质总量的5.39倍粉状净化剂,并其将倒入现有的自动给料机中,自动给料机会均匀持续的将粉状净化剂输送到锌冶炼的设备中；设备中的冶炼溶液和粉状净化剂进行充分搅拌,对其进行加热工作,保证最低温度不低于65℃,粉状净化剂所净化的作业时间不低于90分钟,因此粉状净化剂将冶炼溶液中的钴元素去除掉。本发明通过将粉状净化剂替代现有的有机净化剂,提高净化钴元素的效率,降低净化除钴成本,实现降本增效的目的。(The invention discloses a purification method of a zinc smelting powdery purifying agent, and relates to the technical field of metal smelting. The purification method comprises the following steps: purifying zinc smelting by using a powdery purifying agent, firstly determining the using amount of the powdery purifying agent, and simultaneously determining the total amount of impurities in the zinc smelting; after the total amount of impurities in zinc smelting is determined, a powdery purifying agent which is 5.39 times of the total amount of the impurities in the zinc smelting is taken and poured into the existing automatic feeder, and the automatic feeder can uniformly and continuously convey the powdery purifying agent to zinc smelting equipment; the smelting solution and the powdery purifying agent in the equipment are fully stirred and heated, the lowest temperature is not lower than 65 ℃, the operation time for purifying by the powdery purifying agent is not lower than 90 minutes, and therefore the powdery purifying agent removes the cobalt element in the smelting solution. The invention improves the efficiency of purifying cobalt element, reduces the cost of purifying and removing cobalt, and realizes the purpose of cost reduction and efficiency improvement by replacing the existing organic purifying agent with the powdery purifying agent.)

1. The purifying method of the zinc smelting powdery purifying agent comprises the powdery purifying agent and is characterized in that: the purification method comprises the following steps:

s1: when the powdery purifying agent is used for purifying zinc smelting, firstly, the using amount of the powdery purifying agent is determined, and simultaneously, the total amount of impurities in the zinc smelting is determined;

s2: after the total amount of impurities in zinc smelting is determined, a powdery purifying agent which is 5.39 times of the total amount of the impurities in the zinc smelting is taken and poured into the existing automatic feeder, so that the automatic feeder can uniformly and continuously convey the powdery purifying agent to zinc smelting equipment;

s3: according to S2, the smelting solution and the powdery purifying agent in the equipment are fully stirred and heated, and the minimum temperature is ensured to be not lower than 65 ℃, and the operation time for purifying by the powdery purifying agent is not lower than 90 minutes, so that the powdery purifying agent removes the cobalt element in the smelting solution.

2. The purification method of the zinc smelting powdery purifying agent according to claim 1, characterized in that: when the actual operation temperature in the smelting solution is 65-69 ℃ and the operation time is 180 minutes, the powdery purifying agent and the addition times are determined to be 9 times.

3. The purifying method of zinc smelting powdery purifying agent as claimed in claim 1, wherein the powdery purifying agent is zinc sulfate powder.

4. The purification method of a zinc smelting powdery purifying agent according to claim 1, wherein the smelting solution is sampled every 30 minutes in the whole operation time, and the cobalt content in the interior is analyzed.

Technical Field

The invention belongs to the technical field of metal smelting, and particularly relates to a purification method of a zinc smelting powdery purifying agent.

Background

Smelting is a refining technology, which refers to extracting metals in ores by roasting, smelting, electrolysis, using chemical agents and other methods; reducing impurities contained in the metal or increasing certain components in the metal to smelt the metal into the required metal, so that metal smelting is a process of changing the metal from a combined state into a free state; the method comprises zinc smelting, wherein the zinc smelting is a process for converting zinc concentrate into pure zinc. Historically, the melting of zinc has been more difficult than the melting of other metals because of the low boiling point of zinc in comparison. At the temperatures normally used for smelting metals, zinc is a gas that escapes from the furnace with the flue gases and is lost unless special measures are taken to prevent it.

In the working process of the process adopted by the purification operation of the existing smelting plant, a purification workshop has certain pungent smell and certain potential safety hazard, and a purifying agent and an activating agent are used for a period of time to influence the electric efficiency of the electrolysis workshop to a certain extent. The new purification process adopts an organic matter selective impurity removal process, the total amount of organic matters entering the main flow is large, and the problem of plate burning due to enrichment of electrolytic organic matters is easily caused.

There is therefore a need for improvements in the prior art to address the above-mentioned problems.

Disclosure of Invention

The invention aims to provide a purification method of a zinc smelting powdery purifying agent, which improves the efficiency of purifying cobalt elements, reduces the cost of purifying and removing cobalt, realizes the purposes of reducing cost and improving efficiency, eliminates the condition of generating peculiar smell in a purification workshop and improves the operation environment of the purification workshop by replacing the existing organic purifying agent with the powdery purifying agent.

In order to solve the technical problems, the invention is realized by the following technical scheme:

the invention relates to a purification method of a zinc smelting powdery purifying agent, which comprises the following steps: when the powdery purifying agent is used for purifying zinc smelting, firstly, the using amount of the powdery purifying agent is determined, and simultaneously, the total amount of impurities in the zinc smelting is determined; after the total amount of impurities in zinc smelting is determined, a powdery purifying agent which is 5.39 times of the total amount of the impurities in the zinc smelting is taken and poured into the existing automatic feeder, so that the automatic feeder can uniformly and continuously convey the powdery purifying agent to zinc smelting equipment; fully stirring the smelting solution and the powdery purifying agent in the equipment, heating the smelting solution and the powdery purifying agent, ensuring that the minimum temperature is not lower than 65 ℃, and simultaneously ensuring that the operation time for purifying the powdery purifying agent is not lower than 90 minutes, so that the powdery purifying agent removes the cobalt element in the smelting solution.

Further, when the actual working temperature in the smelting solution is 65-69 ℃ and the working time is 180 minutes, the powdery purifying agent and the addition multiple are determined to be 9 times.

Furthermore, the powdery purifying agent adopts zinc sulfate powder.

Further, during the whole operation time, the smelting solution was sampled every 30 minutes, and the cobalt content inside thereof was analyzed.

The invention has the following beneficial effects:

by using the powdery purifying agent, the cobalt removing cost of the supernatant in the purification process can be effectively saved, and the process control is simpler; remove the cobalt operation and have great relation with the temperature, the experimentation all compares according to production temperature operation, when the solution temperature is higher, can also effectively reduce and remove the cobalt cost and remove the cobalt activity duration, simultaneously because likepowder decontaminating agent is the solid powder medicament, can utilize current automatic feeder in the production, realizes the even continuous feed of likepowder decontaminating agent, avoids the manual feeding to cause the inhomogeneity. The powder purifying agent is adopted in the experimental process, so that the purposes of reducing the purifying and cobalt removing cost and realizing cost reduction and efficiency improvement can be effectively achieved, and meanwhile, after the powder purifying agent is adopted for operation, the condition of peculiar smell generated in a purifying workshop is greatly eliminated, the operation environment of the purifying workshop is improved, and the powder purifying agent is a breakthrough in the aspect of environmental protection.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below.

The invention relates to a purification method of a zinc smelting powdery purifying agent, which comprises the following steps: in the purification of zinc smelting by using the powdery purifying agent, firstly, the using amount of the powdery purifying agent is determined, and simultaneously, the total amount of impurities in the zinc smelting is determined, so that the feasibility of the powdery purifying agent can be determined, the powdery purifying agent is experimentally searched, and simultaneously, the experimental searching needs to be divided into two experimental stages, namely: the process is smoothly opened, the existing production process of a second smelting plant is not influenced, and the first stage is seven days; and a second stage: on the basis of stage one, the input amount of the powdery purifying agent is reasonably reduced, and the purposes of reducing cost and improving efficiency are finally achieved:

1. experimental materials

The solution obtained in the test is a first-stage cadmium-removing pressure filtrate in a purification workshop of a production flow of a second smelting plant, and comprises the following components:

2. experimental methods and results

1. Feasibility exploration experiment of powdery purifying agent

Taking 3L of the two-stage pre-purification solution, controlling the temperature to be 65 ℃, adding a purifying agent according to the content of the impurity elements in the table 1 by 20 times, sampling and analyzing Co in the solution every 30min in the operation process, determining the operation time according to whether the content of Co in the sampled solution meets the requirement of a new solution, and obtaining the experimental result shown in the table 2.

The exploration experiment result shows that the powdery purifying agent can remove Co in the liquid before the second-stage purification;

after the total amount of impurities in zinc smelting is determined, a powdery purifying agent which is 5.39 times of the total amount of the impurities in the zinc smelting is taken and poured into the existing automatic feeder, so that the automatic feeder can uniformly and continuously convey the powdery purifying agent to zinc smelting equipment; fully stirring the smelting solution and the powdery purifying agent in the equipment, heating the smelting solution and the powdery purifying agent, ensuring that the minimum temperature is not lower than 65 ℃, and simultaneously ensuring that the operation time for purifying the powdery purifying agent is not lower than 90 minutes, so that the powdery purifying agent removes the cobalt element in the smelting solution;

2. process condition exploration of powder purifying agent

Temperature groping experiment

Taking 3L of the two-stage pre-purification solution, adding a purifying agent according to the content of the impurity elements in Table 1 by 10 times, sampling and analyzing Co in the solution every 30min in the operation process, operating for 180min, controlling the temperature to be 60, 65, 70, 75 and 80 ℃, and obtaining the experimental results shown in Table 3.

The temperature experiment result shows that the high temperature is beneficial to removing impurities by the inorganic purifying agent, and the lowest operation temperature is not lower than 65 ℃.

When the actual operation temperature in the smelting solution is 65-69 ℃ and the operation time is 180 minutes, determining that the powdery purifying agent and the addition multiple are 9 times, wherein the powdery purifying agent adopts zinc sulfate powder, sampling the smelting solution every 30 minutes in the whole operation time, and analyzing the cobalt content in the smelting solution;

investigation experiment for using amount of powder purifying agent

Taking 3L of the two-stage pre-purification solution, controlling the temperature at 65 ℃, sampling and analyzing Co in the solution every 30min in the operation process, wherein the operation time is 180min, the purifying agent is added according to the content of the impurity elements of 7, 8, 9 and 10 times in the table 1, and the experimental results are shown in the table 4.

The experimental result of the dosage of the powdery purifying agent shows that the high addition multiple is beneficial to the impurity removal of the powdery purifying agent, and the powdery purifying and addition multiple is determined to be 9 times by combining the actual operation temperature of 65-69 ℃ in the second-stage purification in production.

3. Comparison experiment of powdery purifying agent and organic purifying agent

According to actual production conditions, 3L of two-stage pre-purification solution is taken, the temperature is controlled to be 68 ℃, Co in the solution is sampled and analyzed every 30min in the operation process, the operation time is 90min, 8 times of powdery purifying agent is added in the initial stage, 20 times of organic purifying agent is added, corresponding times of analysis data of experimental results are increased and decreased, and the experimental results are shown in table 5.

The experimental result of the comparison of the powdery purifying agent and the organic purifying agent shows that the high addition multiple is beneficial to purifying the purifying agent, and under the same condition, the addition multiple of the powdery purifying agent is lower than that of the organic purifying agent, and the cost comparison multiple of the organic purifying agent is determined to be 27 times by combining with the actual production operation time.

4. Electrolytic experiment

The powdery purifying agent is used for removing cobalt, and the electrolytic procedure laboratory experiment is carried out by respectively adopting activated carbon adsorption and non-adsorption and preparing enough new liquid, and the experimental result is as follows:

as can be seen from Table 6, the activated carbon does not adsorb and can also meet the electrolysis requirement, thereby fully indicating that the medicament is actually a powdery medicament; since the electrolysis experiment period is short, whether the long-period production affects the flow can not be proved, but the influence can not be generated in a short time.

And (3) knotting: as can be seen from Table 7, the use of activated carbon for adsorption and non-adsorption has no major effect on the yield of zinc in the electrolysis experiment. Since the electrolysis experiment period is short, whether the long-period production affects the flow can not be proved, but the influence can not be generated in a short time.

5. Cost comparison analysis

The basis of calculation is as follows: 11000 yuan/ton of organic purifying agent, 14700 yuan/ton of powdery purifying agent, 2.33kg/t.Zn per unit consumption of active carbon in production, 8570 yuan/ton of active carbon, 1t zinc ingot with contrast yield and 16.7m³The new liquid produces 1t zinc ingot.

Cobalt removal cost comparison:

organic purifying agent:

(0.06 +0.59+3.65+9.9+ 1.05) × 27 ÷ 1000 × 16.7 × 11=75.64 yuan/t.zn

Powder purifying agent:

(0.06 +0.59+3.65+9.9+ 1.05) × 8 ÷ 1000 × 16.7 × 14.7=29.95 yuan/t.zn

The aggregate cost can be saved (compared with experimental data) = organic decontaminant cost-powdered decontaminant cost =75.64-29.95=45.69 yuan/t.zn.

The experimental data can be obtained, and the cost of the powdery purifying agent is lower than that of the organic purifying agent.

The above are only preferred embodiments of the present invention, and the present invention is not limited thereto, and any modification, equivalent replacement, and improvement made to the technical solutions described in the above embodiments, and to some of the technical features thereof, are included in the scope of the present invention.