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[Chemical Knowledge]：Production and manufacturing method and process of ferric chloride

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The manufacturing method
of ferric chloride
1. Introduction

Ferric chloride (FeCl3) is an important inorganic chemicals, widely used in water treatment, printed circuit board production, dyes, catalysts and other fields. Therefore, it is of great practical significance to study the manufacturing method of ferric chloride. This paper introduces the manufacturing method of ferric chloride in detail, including raw material preparation, reaction process, post-treatment and product quality control.

2. raw material preparation

1. iron filings: high purity iron filings, in order to ensure product quality.
2. Hydrochloric acid: industrial grade hydrochloric acid, the concentration is generally 30% ~ 37%.

3. reaction process

1. add iron filings to the reaction kettle, add a certain amount of water, stir evenly.
2. Hydrochloric acid was added slowly to control the rate of acid addition to allow the reaction to proceed at a lower temperature.
3. A large amount of heat will be generated during the reaction, and the reaction temperature should be controlled by cooling water to keep the temperature at 60~80 ℃.
4. After the reaction is completed, stand for a period of time to precipitate the solid, and the supernatant is ferric chloride solution.

4. post-treatment

1. the supernatant will be pumped into the crystallization kettle, concentrated by evaporation, so that ferric chloride crystallization precipitation.
2. The crystals were centrifuged and the resulting crystals were washed with a small amount of water to remove surface impurities.
3. The washed crystals are dried to obtain a finished product of ferric chloride.

5. product quality control

1. By controlling the purity of raw materials and adding acid speed, to ensure stable product quality.
2. The finished product is tested for purity, moisture, heavy metals and other indicators to ensure that the product meets the relevant standards.
Precautions for
6.

1. During operation, the acid addition rate should be strictly controlled to prevent the reaction from being too intense and causing safety accidents.
2. The equipment should be regularly maintained and maintained to ensure the normal operation of the equipment and improve production efficiency.
3. Operators should be professionally trained and familiar with operating procedures and safety knowledge to ensure the safe and smooth production process.

7. waste treatment

1. The waste residue generated in the reaction process should be properly treated and can be sent to a professional treatment plant for resource utilization or safe landfill.
2. Waste water should be discharged after treatment to meet environmental protection standards to avoid pollution to the environment.

8. conclusion The manufacturing method of

ferric chloride involves raw material preparation, reaction process, post-treatment and product quality control. By strictly controlling the process parameters and operation points of each link, high-quality ferric chloride products can be produced. At the same time, strengthen waste disposal and operator training to ensure the safety and environmental protection of the production process, and improve the economic and social benefits of the enterprise.

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