Fully automatic aluminum sulphate production line

Our company provides aluminum sulfate production line equipment that can produce aluminum sulfate products that strictly adhere to national and industry quality standards, rigorously controlling the content of impurities such as iron and heavy metals. These products are available in multiple specifications, including industrial grade, low-iron grade, and iron-free grade, meeting the stringent requirements of various scenarios such as drinking water purification, high-grade papermaking, and fine chemicals. They possess core advantages such as high purity, good solubility, high efficiency, and strong stability.

Core Advantages of the Production Line
•High degree automation: The whole process is equipped with PLC control system to realize automatic weighing, reaction, temperature control and packaging, reduce manual intervention, and improve production efficiency and product uniformity;

•Strict quality control: Sampling inspection is carried out for each batch of reaction to ensure compliance with all levels of quality standards;

•Green, environmental protection and energy saving: Equipped with reaction tail gas absorption and purification, production wastewater recycling, no waste residue, realizing clean production;

•Flexible production capacity adjustment: The production line can flexibly adjust production capacity and product specifications according to market demand, which can not only mass produce industrial grade aluminum sulfate, but also customize high-end products of low-iron and iron-free grade to meet diversified market demand.

1. Raw Material Pretreatment and Metering

High-quality aluminum hydroxide and industrial-grade sulfuric acid are selected as the core raw materials. An advanced automatic weighing and dosing system is employed to ensure precise measurement and proportioning. Strict control of raw material purity and feeding ratios guarantees a stable and accurate foundation for the subsequent chemical reaction process.

2. Acidolysis Reaction (Core Process)

The accurately metered sulfuric acid and aluminum hydroxide are fed into a closed reaction kettle, where a neutralization reaction takes place under controlled temperature conditions. The reaction temperature (80–150°C), pressure, and residence time are precisely regulated to ensure complete conversion of raw materials into aluminum sulfate solution.

The entire reaction process is conducted in a sealed environment to minimize exhaust gas emissions. An integrated exhaust gas absorption system is installed to enhance environmental protection and ensure compliance with industrial emission standards.

3. Crystallization and Drying

The concentrated solution is transferred to a steel belt crystallizer, where continuous cooling crystallization is achieved through a combination of water cooling and air cooling. By adjusting the feed rate and conveyor speed, a stable and efficient crystallization process is maintained, resulting in the formation of aluminum sulfate crystals.

After solidification, the crystal material is discharged from the steel belt and passes through a flaker for initial crushing before entering the next processing stage.

4. Crushing and Packaging

The flake-form aluminum sulfate crystals are further processed according to market requirements. Through crushing and milling, the material can be converted into various product forms, including granules and powder.

A fully automated packaging line is used for precise weighing, filling, sealing, and palletizing. The entire packaging process is conducted in a closed, dust-free environment to prevent moisture absorption and contamination, ensuring consistent product quality and storage stability.

FAQ：

1. What raw materials are used in an aluminum sulfate production line?

The primary raw materials include aluminum hydroxide, bauxite, or aluminum scrap, along with industrial-grade sulfuric acid. Among these, aluminum hydroxide is the most commonly used due to its high purity and stable reaction performance, which ensures consistent product quality.

2. What is the typical production capacity of an aluminum sulfate plant?

They are highly customizable, with capacities typically ranging from 5 tons/day to over 200 tons/day. The final capacity depends on factors such as raw material type, process design, and the level of automation required.

3. Is the production process environmentally friendly?

Yes. Modern aluminum sulfate plants are designed with closed reaction systems and exhaust gas absorption units, which effectively reduce emissions. Waste gases are treated before release, ensuring compliance with environmental regulations and minimizing environmental impact.