CN-122010165-A - Dechlorination reagent Ng131 and preparation method and application thereof

Abstract

The invention discloses a dechlorination reagent Ng131, a preparation method and application thereof, wherein the dechlorination reagent Ng131 is prepared from raw materials of tertiary amine with Xin Guiwan groups, bismuth molybdate and pine oil. The method comprises the steps of reacting raw materials of the tri Xin Guiwan-group tertiary amine, bismuth molybdate and pine oil in a formula ratio for 1-4 hours under the oxygen pressure of 0.5-1.0 KPa and the temperature of 200-300 ℃. The application is the application of the dechlorination reagent Ng131 in the defluorination process of the copper sulfate solution. The dechlorination reagent Ng131 has stable chlorine removal performance under the conditions of high acid and high temperature, and has high-efficiency dechlorination performance.

Inventors

• HE XIAOCAI
• LIU JINYUE
• XU YUAN
• REN JIUYANG
• Pei Jiangyong
• LI YINA
• HE QIUGU
• SHI HUIXIAN
• LIN SHENGNAN
• FANG DE
• YUAN YE
• REN TING

Assignees

• 昆明冶金研究院有限公司

Dates

Publication Date

20260512

Application Date

20260224

Claims (10)

1. 1. The dechlorination reagent Ng131 is characterized in that the dechlorination reagent Ng131 is prepared from raw materials of tri Xin Guiwan-tertiary amine, bismuth molybdate and pine oil.
2. 2. The dechlorination reagent Ng131 of claim 1, wherein the molar ratio of the tri Xin Guiwan tertiary amine, bismuth molybdate and pine oil is (1-5): 1-10): 20-100.
3. 3. A method for preparing the dechlorination reagent Ng131 as claimed in claim 1 or 2, which is characterized in that raw materials of the tri Xin Guiwan-group tertiary amine, bismuth molybdate and pine oil in a formula proportion are reacted for 1-4 hours under the oxygen pressure of 0.5-1.0 kpa and the temperature of 200-300 ℃.
4. 4. The use of a dechlorination reagent Ng131 as claimed in claim 1 or 2, characterized in that the dechlorination reagent Ng131 is used in a zinc sulphate solution dechlorination process.
5. 5. The use according to claim 4, wherein the zinc sulphate dechlorination comprises a pretreatment and main reaction steps, in particular comprising: A. pre-treating, namely regulating the pH value of a zinc sulfate solution to be treated to be 1-3 to obtain a material a; B. And (3) the main reaction is that a dechlorination reagent Ng131 is added into the material a for stirring reaction to obtain a dechlorinated zinc sulfate solution.
6. 6. The use according to claim 5, wherein the chloride ion content in the zinc sulfate solution to be treated in step a is 0.5-0.7 g/L.
7. 7. The use according to claim 5, wherein the dechlorination reagent is added in the amount of 4.5-6.5 g/L.
8. 8. The use according to claim 5, wherein the stirring speed of the stirring reaction in the step B is 100 to 200r/min.
9. 9. The use according to claim 5, wherein the temperature of the stirring reaction in step B is 50-80 ℃.
10. 10. The method according to claim 5, wherein the stirring reaction time in the step B is 1 to 3 hours.

Description

Dechlorination reagent Ng131 and preparation method and application thereof Technical Field The invention belongs to the technical field of metallurgy, and particularly relates to a dechlorination reagent Ng131, and a preparation method and application thereof. Background Zinc sulfate is an important raw material for electrolytic zinc and is widely applied to the fields of metallurgy, chemical industry, electronics and the like. However, in the zinc sulfate production process, chlorine impurities are often accompanied, and the impurities affect the purity and quality of the zinc sulfate, so that the application range and market value of the zinc sulfate are limited. In order to improve the quality of zinc sulfate, chlorine element must be effectively removed. Therefore, it is necessary to develop a method capable of solving the above technical problems. Disclosure of Invention The invention provides a dechlorination reagent Ng131, a second aim of providing a preparation method of the dechlorination reagent Ng131 and a third aim of providing application of the dechlorination reagent Ng 131. The first object of the invention is achieved in that the dechlorination reagent Ng131 is prepared by taking tertiary amino Xin Guiwan groups, bismuth molybdate and pine oil as raw materials. The technical principle is as follows: 1. Pine oil dehydration condensation reaction The hydroxyl groups in the pine oil are dehydrated and condensed with the hydroxyl groups on the surface of bismuth molybdate to form chemical bond connection: Bi-OH + HO-R′→Bi-O-R′+ H2O 2. Oxygen pressure crosslinking reaction Under the condition of oxygen pressure, the alkyl chain is oxidatively coupled: 2R-H + [O] → R-R + H2O the second aim of the invention is realized by reacting raw materials of the tri Xin Guiwan-group tertiary amine, bismuth molybdate and pine oil in a formula ratio for 1-4 h under the oxygen pressure of 0.5-1.0 KPa and the temperature of 200-300 ℃. The third object of the invention is achieved by the application of the dechlorination reagent Ng131 in a zinc sulfate solution dechlorination process. The dechlorination reagent Ng131 is prepared by reacting tri Xin Guiwan-tertiary amine, bismuth molybdate and pine oil for 1-4 hours under the oxygen pressure of 0.5-1.0kPa and the temperature of 200-300 ℃ until the reaction is stopped, wherein the molar ratio of the tertiary amine to the bismuth molybdate to the pine oil is 1-5:1-10:20-100. The precipitant has stable chlorine removal performance under the conditions of high acid and high temperature, and has high-efficiency chlorine removal performance. By adding the dechlorination reagent Ng131, the reaction conditions such as pH value, temperature, time and the like are regulated so as to improve the efficiency and stability of chlorine removal, and finally, an environment-friendly and economically feasible treatment scheme is realized. Detailed Description The invention is further illustrated, but is not limited in any way, by the following examples, and any alterations or substitutions based on the teachings of the invention are within the scope of the invention. The dechlorination reagent Ng131 is prepared from raw materials of tri Xin Guiwan-tertiary amine, bismuth molybdate and pine oil. The mol ratio of the tri Xin Guiwan tertiary amine, bismuth molybdate and pine oil is (1-5): 1-10): 20-100. The preparation method of the dechlorination reagent Ng131 comprises the steps of reacting raw materials of three Xin Guiwan-group tertiary amine, bismuth molybdate and pine oil in a formula ratio for 1-4 h under the oxygen pressure of 0.5-1.0 KPa and the temperature of 200-300 ℃. The application of the dechlorination reagent Ng131 disclosed by the invention is the application of the dechlorination reagent Ng131 in a zinc sulfate solution dechlorination process. The zinc sulfate dechlorination comprises pretreatment and main reaction steps, and specifically comprises the following steps: A. pre-treating, namely regulating the pH value of a zinc sulfate solution to be treated to be 1-3 to obtain a material a; B. And (3) the main reaction is that a dechlorination reagent Ng131 is added into the material a for stirring reaction to obtain a dechlorinated zinc sulfate solution. And (C) the chloride ion content in the zinc sulfate solution to be treated in the step A is 0.5-0.7 g/L. And B, adding the dechlorination reagent in the step 4.5-6.5 g/L. And B, stirring the reaction in the step of stirring at a stirring speed of 100-200 r/min. And B, stirring and reacting at the temperature of 50-80 ℃. And B, stirring and reacting for 1-3 hours. The invention is further illustrated by the following examples: Example 1 And (3) reacting the raw materials of the tri Xin Guiwan-group tertiary amine, the bismuth molybdate and the pine oil with the molar ratio of 1:20 at the oxygen pressure of 0.5-0.8 KPa and the temperature of 200-220 ℃ for 5h to obtain the target object dechlorination reagent Ng131. Ex